General

  • Target

    a03b66a1ddbda28b4624edd0b7ec2cda.exe

  • Size

    6.8MB

  • Sample

    211221-ak2saacaf7

  • MD5

    a03b66a1ddbda28b4624edd0b7ec2cda

  • SHA1

    3f1fd35352fbde7a47d94646e6565e7e0e202306

  • SHA256

    045480a084a090029c9f86b103e3f23b4e9e3923180c35d61eca933af3802060

  • SHA512

    7fb596d601010dd91a84ecf056b8f379f776d21270396e655f455119e571e42965b1f82561f827d5141ddde78efcf21b271f7b80648ec41b8a7254bc88f57120

Malware Config

Extracted

Family

socelars

C2

http://www.biohazardgraphics.com/

Extracted

Family

smokeloader

Version

2020

C2

http://rcacademy.at/upload/

http://e-lanpengeonline.com/upload/

http://vjcmvz.cn/upload/

http://galala.ru/upload/

http://witra.ru/upload/

rc4.i32
rc4.i32

Extracted

Family

redline

Botnet

media18n

C2

65.108.69.168:13293

Targets

    • Target

      a03b66a1ddbda28b4624edd0b7ec2cda.exe

    • Size

      6.8MB

    • MD5

      a03b66a1ddbda28b4624edd0b7ec2cda

    • SHA1

      3f1fd35352fbde7a47d94646e6565e7e0e202306

    • SHA256

      045480a084a090029c9f86b103e3f23b4e9e3923180c35d61eca933af3802060

    • SHA512

      7fb596d601010dd91a84ecf056b8f379f776d21270396e655f455119e571e42965b1f82561f827d5141ddde78efcf21b271f7b80648ec41b8a7254bc88f57120

    • 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.

    • Socelars

      Socelars is an infostealer targeting browser cookies and credit card credentials.

    • Socelars Payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Nirsoft

    • ASPack v2.12-2.42

      Detects executables packed with ASPack v2.12-2.42

    • Downloads MZ/PE file

    • Executes dropped EXE

    • 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 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.

    • 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.

    • Looks up geolocation information via web service

      Uses a legitimate geolocation service to find the infected system's geolocation info.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks