General

  • Target

    51D8ECF0ED7ECB364FD78F3FC53F871F.exe

  • Size

    3.1MB

  • Sample

    210531-r9nfbstmfe

  • MD5

    51d8ecf0ed7ecb364fd78f3fc53f871f

  • SHA1

    03a0a32d8c9dd0f4a97eacde1f010ee5665d2b8a

  • SHA256

    6a966d8a8bc18b016f35a159c110eb8dd5527b83e39db5fa7300e4634c9cb096

  • SHA512

    6baf4d67d6dc5ad47658b48e83b1a9d9cb4d49e5f615439232b3817d01a9c7d847e2ac2b280eae8a4b757599462e4fb2ea39e217ec46b6c54b23a18f201f4aff

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://20xbtc.com/upload/

http://yzsnw.com/upload/

http://kaledebiyat.com/upload/

http://expertizizmir.com/upload/

http://dedkndy.com/upload/

http://theuncu.com/upload/

rc4.i32
rc4.i32

Extracted

Family

redline

Botnet

8

C2

wimuawzice.xyz:80

Targets

    • Target

      51D8ECF0ED7ECB364FD78F3FC53F871F.exe

    • Size

      3.1MB

    • MD5

      51d8ecf0ed7ecb364fd78f3fc53f871f

    • SHA1

      03a0a32d8c9dd0f4a97eacde1f010ee5665d2b8a

    • SHA256

      6a966d8a8bc18b016f35a159c110eb8dd5527b83e39db5fa7300e4634c9cb096

    • SHA512

      6baf4d67d6dc5ad47658b48e83b1a9d9cb4d49e5f615439232b3817d01a9c7d847e2ac2b280eae8a4b757599462e4fb2ea39e217ec46b6c54b23a18f201f4aff

    • PlugX

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

    • 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.

    • 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 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.

    • 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 Enterprise v6

Tasks