General

  • Target

    bc31b9a0a04cdbb2db963b14dd35bab87b46bfa1b70626ee1fabc1654ee4093b

  • Size

    524KB

  • Sample

    221123-vs7nqach2v

  • MD5

    2cbec03e40a5b039cf09284bf0ec34a8

  • SHA1

    e0b356a51d9bb65421c9a8350baabf081d4c83c8

  • SHA256

    bc31b9a0a04cdbb2db963b14dd35bab87b46bfa1b70626ee1fabc1654ee4093b

  • SHA512

    f04295847d0ea634a47efed3edbcfa9197d461843577c374f0d30af909f6179939f937076f2bac33e50267d2851a50bb675f7ab9a7e87f8394141ea501d05db7

  • SSDEEP

    12288:dSFMFpuhRp8tmnkX4C4IosE/rSkU19Zt/kMM22:UF+u+gkX3o1jSkErM2

Score
10/10

Malware Config

Targets

    • Target

      bc31b9a0a04cdbb2db963b14dd35bab87b46bfa1b70626ee1fabc1654ee4093b

    • Size

      524KB

    • MD5

      2cbec03e40a5b039cf09284bf0ec34a8

    • SHA1

      e0b356a51d9bb65421c9a8350baabf081d4c83c8

    • SHA256

      bc31b9a0a04cdbb2db963b14dd35bab87b46bfa1b70626ee1fabc1654ee4093b

    • SHA512

      f04295847d0ea634a47efed3edbcfa9197d461843577c374f0d30af909f6179939f937076f2bac33e50267d2851a50bb675f7ab9a7e87f8394141ea501d05db7

    • SSDEEP

      12288:dSFMFpuhRp8tmnkX4C4IosE/rSkU19Zt/kMM22:UF+u+gkX3o1jSkErM2

    Score
    10/10
    • 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

    • 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

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Process Discovery

1
T1057

Tasks