Analysis

  • max time kernel
    144s
  • max time network
    147s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    28-12-2020 07:30

General

  • Target

    a911862b8e009e674d018aaff16a326b.exe

  • Size

    595KB

  • MD5

    a911862b8e009e674d018aaff16a326b

  • SHA1

    03537444d8d5fee6c3a86cd5ee86a33cba1deeca

  • SHA256

    add432dca76d9ae5e7883d7fccba10211cbf0a6b2f694af0edc37a679739f375

  • SHA512

    903e7d5299d2c84f0a2cf2eeec77f48f0aaf0f0bb4947cddddca1667c0721b2ccb38c36573c125ef37f5bb33b9ab6003030fe2606db647d39c8bbab3ee090b02

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\a911862b8e009e674d018aaff16a326b.exe
    "C:\Users\Admin\AppData\Local\Temp\a911862b8e009e674d018aaff16a326b.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:3888
    • C:\Users\Admin\AppData\Roaming\leadentop\bestof.exe
      bestof.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:756

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/756-10-0x0000000072B40000-0x000000007322E000-memory.dmp

    Filesize

    6.9MB

  • memory/756-11-0x0000000005440000-0x0000000005464000-memory.dmp

    Filesize

    144KB

  • memory/756-18-0x000000000A0F0000-0x000000000A0F1000-memory.dmp

    Filesize

    4KB

  • memory/756-7-0x0000000004FF7000-0x0000000004FF8000-memory.dmp

    Filesize

    4KB

  • memory/756-8-0x0000000005490000-0x0000000005491000-memory.dmp

    Filesize

    4KB

  • memory/756-9-0x0000000006E10000-0x0000000006E11000-memory.dmp

    Filesize

    4KB

  • memory/756-17-0x0000000009FA0000-0x0000000009FA1000-memory.dmp

    Filesize

    4KB

  • memory/756-4-0x0000000000000000-mapping.dmp

  • memory/756-12-0x0000000009490000-0x0000000009491000-memory.dmp

    Filesize

    4KB

  • memory/756-13-0x0000000006C80000-0x0000000006CA2000-memory.dmp

    Filesize

    136KB

  • memory/756-14-0x0000000009990000-0x0000000009991000-memory.dmp

    Filesize

    4KB

  • memory/756-15-0x0000000006D70000-0x0000000006D71000-memory.dmp

    Filesize

    4KB

  • memory/756-16-0x0000000006DB0000-0x0000000006DB1000-memory.dmp

    Filesize

    4KB

  • memory/3888-2-0x000000000510B000-0x000000000510C000-memory.dmp

    Filesize

    4KB

  • memory/3888-3-0x00000000055A0000-0x00000000055A1000-memory.dmp

    Filesize

    4KB