Managed XDR

vcredist_x86.exe (Dridex, Tinba) — malware analysis report

File info

Filename
vcredist_x86.exe
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
1.9 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
7d3714527be84854bbc4df6504070d706b0f1c4e
SHA256
072261475de12f031215c589595f26c1d955e82c0043907982bbd2ab1ee0269e
MD5
f8b86cc58a197a30f7953c47b5665716

Malwares

  • Dridex
  • Tinba

Signatures

Persistence

T1574 dropper_dll: Creates DLL, which is then loaded into the process

Privilege Escalation

T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1574 dropper_dll: Creates DLL, which is then loaded into the process

Defense Evasion

T1497.001 antisandbox_productid: Obtains Windows ProductID, probably to fingerprint a sandbox
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1574 dropper_dll: Creates DLL, which is then loaded into the process

Credential Access

T1503 infostealer_browser: Retrieves personal information from local Internet browsers
T1552 infostealer_browser: Retrieves personal information from local Internet browsers
T1552 infostealer_mail: Collects personal data from local email clients
T1552.001 infostealer_bitcoin: Attempts to obtain access to Bitcoin/ALTCoin wallets
T1555.003 cookie_files: Accesses cookie files
T1555.004 windows_credential_manager: Acquire credentials from the Windows Credential Manager
T1552 cookie_files: Accesses cookie files

Discovery

T1497.001 antisandbox_productid: Obtains Windows ProductID, probably to fingerprint a sandbox
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1083 crawls_directories: Opens a huge number of directories all over disk C: (possibly, searches for sensitive data)
T1518 locates_browser: Attempts to identify where browsers are installed

Collection

T1114 infostealer_mail: Collects personal data from local email clients

Impact

T1486 modifies_files2: Cryptolocker indicators detected (500 or more files are modified)

Other

yara_rules: Static rules
creates_exe: Creates executable files in the file system
executes_dropped_exe: Executes dropped exe files
require_administrator: Requests administrator privileges
has_pdb: This executable file has a PDB path
access_recyclebin: Manipulation with recyclebin detected
get_policy_info: Retrieves information about a Policy object
creates_in_programdata: Creates files in the ProgramData directory
writes_data: Writes big amount of data to disk

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