General

  • Target

    98005f482f8fae7cfbceeaf2bf475ef71f89ef2e54f0e2450e2319a95cd042c4

  • Size

    556KB

  • Sample

    221123-vdnmasgg22

  • MD5

    450249ce23dbb6904c1664953834d964

  • SHA1

    338e21c6accc51b22bf63e897fb98f5e5e9b296d

  • SHA256

    98005f482f8fae7cfbceeaf2bf475ef71f89ef2e54f0e2450e2319a95cd042c4

  • SHA512

    7c18e17a9bb3e0514272898371c78a2e77ecc770d801fde3f24bf819287794e44396b48ac466c392b18a21da2772ba4d5a01c32d2aa06c747bd3c3e0878913f8

  • SSDEEP

    12288:+7Lo8Rs90X41cnOOWB2KpyYK4BVqZDx2mpmHPW9GROsI8w:+7L1yMgcnOds44Fp2PWUDI8

Malware Config

Targets

    • Target

      98005f482f8fae7cfbceeaf2bf475ef71f89ef2e54f0e2450e2319a95cd042c4

    • Size

      556KB

    • MD5

      450249ce23dbb6904c1664953834d964

    • SHA1

      338e21c6accc51b22bf63e897fb98f5e5e9b296d

    • SHA256

      98005f482f8fae7cfbceeaf2bf475ef71f89ef2e54f0e2450e2319a95cd042c4

    • SHA512

      7c18e17a9bb3e0514272898371c78a2e77ecc770d801fde3f24bf819287794e44396b48ac466c392b18a21da2772ba4d5a01c32d2aa06c747bd3c3e0878913f8

    • SSDEEP

      12288:+7Lo8Rs90X41cnOOWB2KpyYK4BVqZDx2mpmHPW9GROsI8w:+7L1yMgcnOds44Fp2PWUDI8

    • Modifies WinLogon for persistence

    • Modifies visiblity of hidden/system files in Explorer

    • Executes dropped EXE

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Adds Run key to start application

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Winlogon Helper DLL

1
T1004

Hidden Files and Directories

1
T1158

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

3
T1112

Hidden Files and Directories

1
T1158

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Process Discovery

1
T1057

Collection

Data from Local System

1
T1005

Tasks