General

  • Target

    Bypass3_Pure_Mode.exe

  • Size

    724KB

  • Sample

    240523-p3hjpabb42

  • MD5

    6e1e63e97c09758e3db18ea31bd95284

  • SHA1

    6f4a188d43122d22a14459123764a094ed56b37c

  • SHA256

    2721b3feda88f242a54f83dfcd50d6356ae11a4374a816790cc90c00eb990ba1

  • SHA512

    0708ebbc263c5f16fddb0e1e76abf30b3ff5842207f450e0892e0879f828ecf165a203f156f460ed3cb97dd85691c0f3dc2233160b98e7daf34057872c70ba23

  • SSDEEP

    12288:7DeaBr2968/mPSxX7UydfxMApCPuiRMfOzzH3t2zrNkjovC7Qe1RwUdaZkgsZyL:3Pp8/2Sx/xMA8miRSO3H3t8aDaXs8

Malware Config

Extracted

Family

xworm

Version

5.0

C2

45.141.27.41:7000

Mutex

9ZF9ZsOZGh1T1r1n

Attributes
  • Install_directory

    %Public%

  • install_file

    csrss.exe

aes.plain

Targets

    • Target

      Bypass3_Pure_Mode.exe

    • Size

      724KB

    • MD5

      6e1e63e97c09758e3db18ea31bd95284

    • SHA1

      6f4a188d43122d22a14459123764a094ed56b37c

    • SHA256

      2721b3feda88f242a54f83dfcd50d6356ae11a4374a816790cc90c00eb990ba1

    • SHA512

      0708ebbc263c5f16fddb0e1e76abf30b3ff5842207f450e0892e0879f828ecf165a203f156f460ed3cb97dd85691c0f3dc2233160b98e7daf34057872c70ba23

    • SSDEEP

      12288:7DeaBr2968/mPSxX7UydfxMApCPuiRMfOzzH3t2zrNkjovC7Qe1RwUdaZkgsZyL:3Pp8/2Sx/xMA8miRSO3H3t8aDaXs8

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

MITRE ATT&CK Matrix ATT&CK v13

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Tasks