Overview

overview

10

Static

static

10

XClient.exe

windows7-x64

10

XClient.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    XClient.exe

  • Size

    41KB

  • Sample

    240521-k64h4sga2s

  • MD5

    f67bb681d3527e1285c2138c3e60e414

  • SHA1

    70ba55b2f36c47606f1c7835df04a4964ff36757

  • SHA256

    43de230c095246934152c04d5d48751994b1f20bd08f1e5bb5738a15e3503514

  • SHA512

    b82983acd04d66abf86f8a59c8dd1901809b8314a5c7dc9fa2c758492cb57dfe4ef06134be2d0f08d52ba049119ace9c90bfb83829215da38c5962815f880ca5

  • SSDEEP

    768:lU0MO0OwERFUa+s91Q7fRaYVO8MoJpJIF5PG9nelX6vOwh535iN:lU0M/5ET9zvy0Hfo3aFI9eB6vOwn8N

Score
10/10
xwormexecutionpersistencerattrojan

Malware Config

Extracted

Family

xworm

Version

5.0

Mutex

IfHxsdPplu71cY72

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    Calculator.exe

  • pastebin_url

    https://pastebin.com/raw/WrxExzm8

aes.plain

Targets

    • Target

      XClient.exe

    • Size

      41KB

    • MD5

      f67bb681d3527e1285c2138c3e60e414

    • SHA1

      70ba55b2f36c47606f1c7835df04a4964ff36757

    • SHA256

      43de230c095246934152c04d5d48751994b1f20bd08f1e5bb5738a15e3503514

    • SHA512

      b82983acd04d66abf86f8a59c8dd1901809b8314a5c7dc9fa2c758492cb57dfe4ef06134be2d0f08d52ba049119ace9c90bfb83829215da38c5962815f880ca5

    • SSDEEP

      768:lU0MO0OwERFUa+s91Q7fRaYVO8MoJpJIF5PG9nelX6vOwh535iN:lU0M/5ET9zvy0Hfo3aFI9eB6vOwn8N

    Score
    10/10
    xwormexecutionpersistencerattrojan

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

      trojanratxworm

    • Command and Scripting Interpreter: PowerShell

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

      execution

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Adds Run key to start application

      persistence

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Resource Development

Reconnaissance

Tasks