General

  • Target

    7b0f78e83f4027c6b6bd15af68b68af2.exe

  • Size

    595KB

  • Sample

    200731-5trtsm9mes

  • MD5

    7b0f78e83f4027c6b6bd15af68b68af2

  • SHA1

    cf8fdfb81265fa4ec264f787dedcc2d52c782a36

  • SHA256

    1912d659af4fedbc9e143eff5e666ce460a710fd84c83f7a4c4d8170356e578a

  • SHA512

    37faf89c2735d629c682048fca73b6200c9b313a26307b426f4d60028c4f1d658417629af85ef1633d560fcba0851ad6a5a16615fc7a65945343949e1610de53

Malware Config

Targets

    • Target

      7b0f78e83f4027c6b6bd15af68b68af2.exe

    • Size

      595KB

    • MD5

      7b0f78e83f4027c6b6bd15af68b68af2

    • SHA1

      cf8fdfb81265fa4ec264f787dedcc2d52c782a36

    • SHA256

      1912d659af4fedbc9e143eff5e666ce460a710fd84c83f7a4c4d8170356e578a

    • SHA512

      37faf89c2735d629c682048fca73b6200c9b313a26307b426f4d60028c4f1d658417629af85ef1633d560fcba0851ad6a5a16615fc7a65945343949e1610de53

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Accesses 2FA software files, possible credential harvesting

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • JavaScript code in executable

    • 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.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

4
T1081

Discovery

Query Registry

3
T1012

System Information Discovery

2
T1082

Remote System Discovery

1
T1018

Collection

Data from Local System

4
T1005

Command and Control

Web Service

1
T1102

Tasks