Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    12-01-2022 00:23

General

  • Target

    6E52D162BAF265E070EC1A3147AD651D8BD8481D96B33.exe

  • Size

    3MB

  • MD5

    defafd07d253ff3e67f6bb04d59b125c

  • SHA1

    9ac9b2bea4507031b79db57c5fe3856bf1900d69

  • SHA256

    6e52d162baf265e070ec1a3147ad651d8bd8481d96b33cee1b89d84e9c92c5f3

  • SHA512

    f654fe4ae503ca459ca9c261a6f76b08ca14a5e807785ebc5f13f3a7d8290e45cc3d1c987c7edc091acff9624d0e2caf8d4dac9f8d26d7ab0699aacba47db4b8

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://directorycart.com/upload/

http://tierzahnarzt.at/upload/

http://streetofcards.com/upload/

http://ycdfzd.com/upload/

http://successcoachceo.com/upload/

http://uhvu.cn/upload/

http://japanarticle.com/upload/

rc4.i32
rc4.i32

Extracted

Family

redline

Botnet

fucker2

C2

135.181.129.119:4805

Extracted

Family

redline

Botnet

media18

C2

91.121.67.60:2151

Signatures

  • Modifies Windows Defender Real-time Protection settings 3 TTPs
  • Process spawned unexpected child process 1 IoCs

    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 13 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • ASPack v2.12-2.42 6 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Downloads MZ/PE file
  • Executes dropped EXE 20 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 64 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 13 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 3 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Kills process with taskkill 1 IoCs
  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies registry class 19 IoCs