General

  • Target

    Set_Yuki_x64.exe

  • Size

    6.1MB

  • Sample

    221111-ez875abafm

  • MD5

    8a179d54a162d143f19fd7064e361c05

  • SHA1

    4f0cd167e6c22efd4e31357de7e4c66625bf7032

  • SHA256

    434f45359039b25ca4aaca82742c6a5f5317ad2a01c4146a53bc3fc5c2d7703b

  • SHA512

    4112f0f510735b0aa72c2119310aa182354f8aa12d8b9ec4e0c6861de1dcffe4ef491b6e7399de66204e4f4d083f3e879d822a7f3dc7775b86b5c307245b9f16

  • SSDEEP

    24576:uv66t3q/zhIYCpnviF18f5xn/T8BlnpvgSHhD:JsqlRuxn/T8j6s

Malware Config

Extracted

Family

vidar

Version

55.6

Botnet

1325

C2

https://t.me/seclab_new

https://koyu.space/@ofade

Attributes
  • profile_id

    1325

Targets

    • Target

      Set_Yuki_x64.exe

    • Size

      6.1MB

    • MD5

      8a179d54a162d143f19fd7064e361c05

    • SHA1

      4f0cd167e6c22efd4e31357de7e4c66625bf7032

    • SHA256

      434f45359039b25ca4aaca82742c6a5f5317ad2a01c4146a53bc3fc5c2d7703b

    • SHA512

      4112f0f510735b0aa72c2119310aa182354f8aa12d8b9ec4e0c6861de1dcffe4ef491b6e7399de66204e4f4d083f3e879d822a7f3dc7775b86b5c307245b9f16

    • SSDEEP

      24576:uv66t3q/zhIYCpnviF18f5xn/T8BlnpvgSHhD:JsqlRuxn/T8j6s

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • 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

    • 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.

    • Legitimate hosting services abused for malware hosting/C2

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

3
T1005

Command and Control

Web Service

1
T1102

Tasks