Analysis

  • max time kernel
    143s
  • max time network
    147s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    28-12-2020 07:52

General

  • Target

    9cf85e1e2de960124dd87efe8dd0e72a.exe

  • Size

    595KB

  • MD5

    9cf85e1e2de960124dd87efe8dd0e72a

  • SHA1

    ea2d4379e3042fb6bd4271b35faf71c6c720f4ff

  • SHA256

    0ecd4a0cbb6f891a4f527d9df3a12fc717c946556922e3ab49ad866fcd26a15a

  • SHA512

    bc6a368fef8c1d5d90ba83f51cede7553d703d4b80a6aa82592c8385c2f7392f2c28ab3cd3afc69d96b86e2ff736f2f8a4607fb7128f87013d6501252b7d3a57

Score
10/10

Malware Config

Signatures

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine Payload 2 IoCs
  • Executes dropped EXE 1 IoCs
  • UPX packed file 2 IoCs

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

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

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

  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9cf85e1e2de960124dd87efe8dd0e72a.exe
    "C:\Users\Admin\AppData\Local\Temp\9cf85e1e2de960124dd87efe8dd0e72a.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:4800
    • C:\Users\Admin\AppData\Roaming\leadentop\bestof.exe
      bestof.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4392

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\leadentop\bestof.exe

    MD5

    ce62304c3eff639e1b2352667a569b8a

    SHA1

    5a5cb774b59befe102fe04e93d9853cfbda3334b

    SHA256

    e8356fad49709d2563d2707dbb09f4f1019e30a0ff5836047a11b3d1d84f4d62

    SHA512

    99d77537f2fade1ca2255c16fcd5d64618f0364f15cddb1b6a48814c9a7e59ccdac72db7f0a1cf4b0eac63180264fd58989e43839373d085ecb42ad2b9fe6f41

  • C:\Users\Admin\AppData\Roaming\leadentop\bestof.exe

    MD5

    ce62304c3eff639e1b2352667a569b8a

    SHA1

    5a5cb774b59befe102fe04e93d9853cfbda3334b

    SHA256

    e8356fad49709d2563d2707dbb09f4f1019e30a0ff5836047a11b3d1d84f4d62

    SHA512

    99d77537f2fade1ca2255c16fcd5d64618f0364f15cddb1b6a48814c9a7e59ccdac72db7f0a1cf4b0eac63180264fd58989e43839373d085ecb42ad2b9fe6f41

  • memory/4392-10-0x00000000729F0000-0x00000000730DE000-memory.dmp

    Filesize

    6.9MB

  • memory/4392-11-0x0000000005330000-0x0000000005354000-memory.dmp

    Filesize

    144KB

  • memory/4392-18-0x000000000A0F0000-0x000000000A0F1000-memory.dmp

    Filesize

    4KB

  • memory/4392-7-0x0000000004FD7000-0x0000000004FD8000-memory.dmp

    Filesize

    4KB

  • memory/4392-8-0x0000000005370000-0x0000000005371000-memory.dmp

    Filesize

    4KB

  • memory/4392-9-0x0000000006E80000-0x0000000006E81000-memory.dmp

    Filesize

    4KB

  • memory/4392-17-0x0000000009450000-0x0000000009451000-memory.dmp

    Filesize

    4KB

  • memory/4392-4-0x0000000000000000-mapping.dmp

  • memory/4392-12-0x0000000009540000-0x0000000009541000-memory.dmp

    Filesize

    4KB

  • memory/4392-13-0x0000000006DB0000-0x0000000006DD2000-memory.dmp

    Filesize

    136KB

  • memory/4392-14-0x0000000009A40000-0x0000000009A41000-memory.dmp

    Filesize

    4KB

  • memory/4392-15-0x00000000093C0000-0x00000000093C1000-memory.dmp

    Filesize

    4KB

  • memory/4392-16-0x0000000009400000-0x0000000009401000-memory.dmp

    Filesize

    4KB

  • memory/4800-2-0x0000000004F6B000-0x0000000004F6C000-memory.dmp

    Filesize

    4KB

  • memory/4800-3-0x00000000054E0000-0x00000000054E1000-memory.dmp

    Filesize

    4KB