General

  • Target

    A1E846B42F6A9D0BF45932EF5930DE83.exe

  • Size

    3.1MB

  • Sample

    210712-rv2a6gwgse

  • MD5

    a1e846b42f6a9d0bf45932ef5930de83

  • SHA1

    ac429b4624f63a530be20ccfb9e75a796d8f6665

  • SHA256

    20ed0f1b402d630a3e131e9e788c57a74d348bcc358e1c0e6f5fd112ad838ab3

  • SHA512

    873f66fd62a98edf32c26a6e5e25303e273cd384ba4d22e9ea610fa25a6cafb43e8249728979c7ef11af9d9c0bf12a6185d453744abd1d12e19147ca4df4758b

Malware Config

Extracted

Family

vidar

Version

39.4

Botnet

706

C2

https://sergeevih43.tumblr.com/

Attributes
  • profile_id

    706

Extracted

Family

redline

Botnet

DomAni

C2

varinnitof.xyz:80

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/

http://999080321newfolder1002002131-service1002.space/

http://999080321newfolder1002002231-service1002.space/

http://999080321newfolder3100231-service1002.space/

http://999080321newfolder1002002431-service1002.space/

http://999080321newfolder1002002531-service1002.space/

http://999080321newfolder33417-012425999080321.space/

http://999080321test125831-service10020125999080321.space/

http://999080321test136831-service10020125999080321.space/

http://999080321test147831-service10020125999080321.space/

http://999080321test146831-service10020125999080321.space/

http://999080321test134831-service10020125999080321.space/

http://999080321est213531-service1002012425999080321.ru/

http://999080321yes1t3481-service10020125999080321.ru/

http://999080321test13561-service10020125999080321.su/

rc4.i32
rc4.i32
rc4.i32
rc4.i32

Extracted

Family

vidar

Version

39.4

Botnet

903

C2

https://sergeevih43.tumblr.com/

Attributes
  • profile_id

    903

Targets

    • Target

      A1E846B42F6A9D0BF45932EF5930DE83.exe

    • Size

      3.1MB

    • MD5

      a1e846b42f6a9d0bf45932ef5930de83

    • SHA1

      ac429b4624f63a530be20ccfb9e75a796d8f6665

    • SHA256

      20ed0f1b402d630a3e131e9e788c57a74d348bcc358e1c0e6f5fd112ad838ab3

    • SHA512

      873f66fd62a98edf32c26a6e5e25303e273cd384ba4d22e9ea610fa25a6cafb43e8249728979c7ef11af9d9c0bf12a6185d453744abd1d12e19147ca4df4758b

    • Modifies Windows Defender Real-time Protection settings

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine Payload

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Vidar Stealer

    • ASPack v2.12-2.42

      Detects executables packed with ASPack v2.12-2.42

    • Downloads MZ/PE file

    • Executes dropped EXE

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • 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.

    • Accesses 2FA software files, possible credential harvesting

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

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

    • Checks whether UAC is enabled

    • 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 NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks