General

  • Target

    aea21ab88cca720a34ec1c9c4794f82a

  • Size

    749KB

  • Sample

    220114-vgv6jshcb8

  • MD5

    aea21ab88cca720a34ec1c9c4794f82a

  • SHA1

    5241d6fd4013ec8251df46e231665471a8ca70db

  • SHA256

    498421bc4c78ba9bf7c9d669bd9958cf2c0c1cc89e94288800fe004400821ef3

  • SHA512

    9503ec3b595db2edee075254da608284a0ffbe33b4f86e3e703293f49c73ef7e5069454608ee23a9f3b3062ef3325e9bed0b4d9b6e8a7e3239942033eb400f38

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://host-data-coin-11.com/

http://file-coin-host-12.com/

rc4.i32
rc4.i32

Targets

    • Target

      aea21ab88cca720a34ec1c9c4794f82a

    • Size

      749KB

    • MD5

      aea21ab88cca720a34ec1c9c4794f82a

    • SHA1

      5241d6fd4013ec8251df46e231665471a8ca70db

    • SHA256

      498421bc4c78ba9bf7c9d669bd9958cf2c0c1cc89e94288800fe004400821ef3

    • SHA512

      9503ec3b595db2edee075254da608284a0ffbe33b4f86e3e703293f49c73ef7e5069454608ee23a9f3b3062ef3325e9bed0b4d9b6e8a7e3239942033eb400f38

    • Process spawned unexpected child process

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

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Checks for common network interception software

      Looks in the registry for tools like Wireshark or Fiddler commonly used to analyze network activity.

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Nirsoft

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Loads dropped DLL

    • 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.

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

3
T1112

Install Root Certificate

1
T1130

Discovery

Software Discovery

1
T1518

Query Registry

2
T1012

System Information Discovery

2
T1082

Command and Control

Web Service

1
T1102

Tasks