General

  • Target

    b6b6b4c660fd06ffde4b0f6a4c6a82d2fb60156363901f16d23128467735443f

  • Size

    4.5MB

  • Sample

    220314-wkgyrsafd4

  • MD5

    5791549d6c88790faabe1c5e817c1b93

  • SHA1

    b251673dd3a068b0f00c958f6120e7e44fdf1bc3

  • SHA256

    b6b6b4c660fd06ffde4b0f6a4c6a82d2fb60156363901f16d23128467735443f

  • SHA512

    f62ac9c64bacfa813fe41033d125370620ca2782ff20985a542b341a1061ebeefdb65b5fb600d65ccee25697803d3d1a41bfa74d50d4ca70b8785fe92eddfc33

Malware Config

Extracted

Family

vidar

Version

39.3

Botnet

706

C2

https://bandakere.tumblr.com/

Attributes
  • profile_id

    706

Extracted

Family

smokeloader

Version

2020

C2

http://ppcspb.com/upload/

http://mebbing.com/upload/

http://twcamel.com/upload/

http://howdycash.com/upload/

http://lahuertasonora.com/upload/

http://kpotiques.com/upload/

rc4.i32
rc4.i32

Targets

    • Target

      b6b6b4c660fd06ffde4b0f6a4c6a82d2fb60156363901f16d23128467735443f

    • Size

      4.5MB

    • MD5

      5791549d6c88790faabe1c5e817c1b93

    • SHA1

      b251673dd3a068b0f00c958f6120e7e44fdf1bc3

    • SHA256

      b6b6b4c660fd06ffde4b0f6a4c6a82d2fb60156363901f16d23128467735443f

    • SHA512

      f62ac9c64bacfa813fe41033d125370620ca2782ff20985a542b341a1061ebeefdb65b5fb600d65ccee25697803d3d1a41bfa74d50d4ca70b8785fe92eddfc33

    • Modifies Windows Defender Real-time Protection settings

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Vidar Stealer

    • ASPack v2.12-2.42

      Detects executables packed with ASPack v2.12-2.42

    • 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.

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • 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.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

3
T1112

Disabling Security Tools

1
T1089

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Tasks