Analysis

  • max time kernel
    151s
  • max time network
    149s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    28-12-2020 17:04

General

  • Target

    5c441448142f5dc5358221d1197d9fcd.exe

  • Size

    594KB

  • MD5

    5c441448142f5dc5358221d1197d9fcd

  • SHA1

    54e4371d254313709280c8a7e5eb8fa0dce22e6f

  • SHA256

    733b75ae9580dccc5e4cc7941e621f89c53b35d94a8b792241f1603ba2e8e675

  • SHA512

    6bcc40a67feba6e2232f26b368341985e1050cfffbecb5843870b9e0bcb2616dc59407dd844274b4cc5eb09e90188c8bcdade0bff1ac0d40946cacab94686faa

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\5c441448142f5dc5358221d1197d9fcd.exe
    "C:\Users\Admin\AppData\Local\Temp\5c441448142f5dc5358221d1197d9fcd.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:4052
    • C:\Users\Admin\AppData\Roaming\leadentop\bestof.exe
      bestof.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2832

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/2832-10-0x0000000072940000-0x000000007302E000-memory.dmp

    Filesize

    6.9MB

  • memory/2832-11-0x0000000006CF0000-0x0000000006D14000-memory.dmp

    Filesize

    144KB

  • memory/2832-18-0x000000000A0F0000-0x000000000A0F1000-memory.dmp

    Filesize

    4KB

  • memory/2832-7-0x0000000004EB7000-0x0000000004EB8000-memory.dmp

    Filesize

    4KB

  • memory/2832-8-0x0000000005490000-0x0000000005491000-memory.dmp

    Filesize

    4KB

  • memory/2832-9-0x0000000006C30000-0x0000000006C31000-memory.dmp

    Filesize

    4KB

  • memory/2832-17-0x0000000009450000-0x0000000009451000-memory.dmp

    Filesize

    4KB

  • memory/2832-4-0x0000000000000000-mapping.dmp

  • memory/2832-12-0x00000000094F0000-0x00000000094F1000-memory.dmp

    Filesize

    4KB

  • memory/2832-13-0x0000000006EB0000-0x0000000006ED2000-memory.dmp

    Filesize

    136KB

  • memory/2832-14-0x00000000099F0000-0x00000000099F1000-memory.dmp

    Filesize

    4KB

  • memory/2832-15-0x00000000093C0000-0x00000000093C1000-memory.dmp

    Filesize

    4KB

  • memory/2832-16-0x0000000009400000-0x0000000009401000-memory.dmp

    Filesize

    4KB

  • memory/4052-2-0x00000000050BB000-0x00000000050BC000-memory.dmp

    Filesize

    4KB

  • memory/4052-3-0x00000000056A0000-0x00000000056A1000-memory.dmp

    Filesize

    4KB