Managed XDR

ea61537e950260b9375b55...80d2bc04abc49ca8_kreuk (BlackMatter, Lockbit) — malware analysis report

File info

Filename
ea61537e950260b9375b55563364068b0f05ffc48ca9864480d2bc04abc49ca8_kreuk
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
10 MB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
dfbe4a8577ad46c221b62593519c38089e188920
SHA256
f35d3bc78e311ea56b45c460d4f619c55175155d0eacd3853257377f2176d94c
MD5
a84a13307cdfd65102b6da2ba690e7da

Malwares

  • BlackMatter
  • Lockbit

Signatures

Execution

T1047 antivm_wmi: Uses WMI to detect virtual environment
T1047 has_wmi: Executes one or several WMI requests

Privilege Escalation

T1134 opens_process_token: Opens the access token associated with a process

Defense Evasion

T1027.002 packer_themida: Themida packer signatures detected
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1027.002 pe_features: Executable file has PE anomalies (may be false positive)
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1134 opens_process_token: Opens the access token associated with a process

Credential Access

T1555.004 windows_credential_manager: Acquire credentials from the Windows Credential Manager

Discovery

T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1057 has_wmi: Executes one or several WMI requests
T1082 has_wmi: Executes one or several WMI requests
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization

Command and Control

T1071.001 winhttp_https: Performs HTTP/HTTPS requests using WinHttp

Other

yara_rules: Static rules
network_bind: Starts servers listening at None
process_crashed: One of the processes has failed
no_graphical_activity: No graphic activity
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
pe_overlay: PE file contains overlay

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