General

  • Target

    sample

  • Size

    14KB

  • Sample

    230403-p53yeaeg88

  • MD5

    bce944765f9123cb6875b1eb83934bf7

  • SHA1

    c946066023ec1ad3875a0f009c92f2cc57991483

  • SHA256

    19586c27c2c9b1a64e52934fb84363fdbd747dc29d2359562de64909e709988c

  • SHA512

    5d42ba9a5f992061dee6223d1ad1f17caf906c2067d304a3b3d3e2b7b78f0e201bc35843883e2d7aae250992da965d11a5ceeab921b54d71e704a8cdfc682693

  • SSDEEP

    384:r7FLVmE+rzeVoOsKgElKeGMtUGHhhbsOvSX28rtGr:rJYECCVoOsKrI1MtBhbTgrg

Malware Config

Targets

    • Target

      sample

    • Size

      14KB

    • MD5

      bce944765f9123cb6875b1eb83934bf7

    • SHA1

      c946066023ec1ad3875a0f009c92f2cc57991483

    • SHA256

      19586c27c2c9b1a64e52934fb84363fdbd747dc29d2359562de64909e709988c

    • SHA512

      5d42ba9a5f992061dee6223d1ad1f17caf906c2067d304a3b3d3e2b7b78f0e201bc35843883e2d7aae250992da965d11a5ceeab921b54d71e704a8cdfc682693

    • SSDEEP

      384:r7FLVmE+rzeVoOsKgElKeGMtUGHhhbsOvSX28rtGr:rJYECCVoOsKrI1MtBhbTgrg

    • UAC bypass

    • Downloads MZ/PE file

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Bootkit

1
T1067

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Modify Registry

3
T1112

Hidden Files and Directories

2
T1158

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Command and Control

Web Service

1
T1102

Tasks