General

  • Target

    a0398eaee184bdd5da2ded03fd02e598.exe

  • Size

    3MB

  • Sample

    210626-eh89erhnme

  • MD5

    a0398eaee184bdd5da2ded03fd02e598

  • SHA1

    46141e70b28544d6c3cccca56e35a52f3cb4671d

  • SHA256

    afdbdff7a2510b208b5ebc47ac621ff14a15aa5673ed6cdf7f7f0f8ad4c1e1fb

  • SHA512

    6ce539db52dba2fc08c40db1278f9138cb1fef758b1efc2057ed19338523a5c8013ed2f99b109c10e8bbb6b3b4d782a93086afd3cdf401bb58548aa2e12ec314

Malware Config

Extracted

Family

vidar

Version

39.4

Botnet

890

C2

https://sergeevih43.tumblr.com

Attributes
  • profile_id

    890

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

      a0398eaee184bdd5da2ded03fd02e598.exe

    • Size

      3MB

    • MD5

      a0398eaee184bdd5da2ded03fd02e598

    • SHA1

      46141e70b28544d6c3cccca56e35a52f3cb4671d

    • SHA256

      afdbdff7a2510b208b5ebc47ac621ff14a15aa5673ed6cdf7f7f0f8ad4c1e1fb

    • SHA512

      6ce539db52dba2fc08c40db1278f9138cb1fef758b1efc2057ed19338523a5c8013ed2f99b109c10e8bbb6b3b4d782a93086afd3cdf401bb58548aa2e12ec314

    • PlugX

      PlugX is a RAT (Remote Access Trojan) that has been around since 2008.

    • Raccoon

      Simple but powerful infostealer which was very active in 2019.

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Vidar Stealer

    • Downloads MZ/PE file

    • Executes dropped EXE

    • UPX packed file

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

    • VMProtect packed file

      Detects executables packed with VMProtect commercial packer.

    • 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

    • 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.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    • autoit_exe

      AutoIT scripts compiled to PE executables.

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Bootkit

1
T1067

Defense Evasion

Modify Registry

3
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

4
T1081

Discovery

Query Registry

4
T1012

System Information Discovery

5
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

4
T1005

Command and Control

Web Service

1
T1102

Tasks