Analysis

  • max time kernel
    144s
  • max time network
    147s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    28-12-2020 07:51

General

  • Target

    cf9789f166db5c71af1b66f9b6ace520.exe

  • Size

    595KB

  • MD5

    cf9789f166db5c71af1b66f9b6ace520

  • SHA1

    aa8162bb254d0bdd93c980bf74be9acbe5a525dc

  • SHA256

    4eb5508fd5f2e2e2c78f406c2312dd83d7790d3822cb2182fbb86df85afd6777

  • SHA512

    ee4c53bff067ebc76b8c27b8dd163640409864168c924869d7f8fe2543da4d03c0ae55cc08e1b2bd36684df72d4d21453b3ca6fff28c16737b123a27bdc793ac

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\cf9789f166db5c71af1b66f9b6ace520.exe
    "C:\Users\Admin\AppData\Local\Temp\cf9789f166db5c71af1b66f9b6ace520.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1316
    • C:\Users\Admin\AppData\Roaming\leadentop\bestof.exe
      bestof.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1984

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/1316-3-0x0000000005320000-0x0000000005321000-memory.dmp

    Filesize

    4KB

  • memory/1316-2-0x000000000500B000-0x000000000500C000-memory.dmp

    Filesize

    4KB

  • memory/1984-10-0x0000000072D70000-0x000000007345E000-memory.dmp

    Filesize

    6.9MB

  • memory/1984-7-0x0000000004E07000-0x0000000004E08000-memory.dmp

    Filesize

    4KB

  • memory/1984-8-0x0000000005360000-0x0000000005361000-memory.dmp

    Filesize

    4KB

  • memory/1984-9-0x0000000006DD0000-0x0000000006DD1000-memory.dmp

    Filesize

    4KB

  • memory/1984-4-0x0000000000000000-mapping.dmp

  • memory/1984-11-0x0000000006C60000-0x0000000006C84000-memory.dmp

    Filesize

    144KB

  • memory/1984-12-0x00000000095D0000-0x00000000095D1000-memory.dmp

    Filesize

    4KB

  • memory/1984-13-0x0000000009440000-0x0000000009462000-memory.dmp

    Filesize

    136KB

  • memory/1984-14-0x0000000009AD0000-0x0000000009AD1000-memory.dmp

    Filesize

    4KB

  • memory/1984-15-0x0000000009500000-0x0000000009501000-memory.dmp

    Filesize

    4KB

  • memory/1984-16-0x0000000009540000-0x0000000009541000-memory.dmp

    Filesize

    4KB

  • memory/1984-17-0x000000000A0E0000-0x000000000A0E1000-memory.dmp

    Filesize

    4KB

  • memory/1984-18-0x000000000A230000-0x000000000A231000-memory.dmp

    Filesize

    4KB