General

  • Target

    Set_Yuki_x64.exe

  • Size

    1.4MB

  • Sample

    221111-mbyeqahc3x

  • MD5

    d9534d31fd38538d6e5d00b03f75ad7d

  • SHA1

    94f3388a8b56b86eb27d9fda2e218d9341e5c8e5

  • SHA256

    0fe6217f7e3e574b93ebcaa46e3271f944e3c8a30f4996f84d77ab67bfa5406e

  • SHA512

    8da827c837aad1fcf47822872de8461ccc37d7caea4980df11d1910d7ee1889802a83acaf4bd632702335abd1a591a2cf7515e1fbe9fe22c1f74ba37e5b42423

  • 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

      1.4MB

    • MD5

      d9534d31fd38538d6e5d00b03f75ad7d

    • SHA1

      94f3388a8b56b86eb27d9fda2e218d9341e5c8e5

    • SHA256

      0fe6217f7e3e574b93ebcaa46e3271f944e3c8a30f4996f84d77ab67bfa5406e

    • SHA512

      8da827c837aad1fcf47822872de8461ccc37d7caea4980df11d1910d7ee1889802a83acaf4bd632702335abd1a591a2cf7515e1fbe9fe22c1f74ba37e5b42423

    • 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