Managed XDR

msorun.dll (Tinba, Dridex) — malware analysis report

File info

Filename
msorun.dll
File type
PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
File size
695 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
fb16fbe16e3decea2e5e8b8093b01dd39aa70779
SHA256
4b686af05102d439216edfcc16601667baecf2bf51612c991068d63e44bf1195
MD5
81f05738a52daa7e34c7928f0a4d0c28

Malwares

  • Tinba
  • Dridex

Signatures

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
T1055 injection_failed: The attempt to inject into a process has failed

Defense Evasion

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
T1055 injection_failed: The attempt to inject into a process has failed
T1070.004 self_removal_command: Executes command to delete itself

Discovery

T1497.001 antivm_disk_size: Checks the amount of free disk space
T1518 locates_browser: Attempts to identify where browsers are installed

Impact

T1486 modifies_files2: Cryptolocker indicators detected (100 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
no_graphical_activity: No graphic activity
has_pdb: This executable file has a PDB path
access_recyclebin: Manipulation with recyclebin detected
writes_data: Writes big amount of data to disk

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