Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    28-12-2020 17:05

General

  • Target

    4185c612244c3fb7ef8931bbde82986e.exe

  • Size

    594KB

  • MD5

    4185c612244c3fb7ef8931bbde82986e

  • SHA1

    2ae95e14dc476ab32f42f68a5c42d50d54421814

  • SHA256

    d20a2a8e654e31c03cf64fffb7564c16a7f12599e665af1b9b272f33c113e371

  • SHA512

    66c98c00801e0af7ecfa71903cddbd948d3ad5aee118e4337f534344f7e96f628332432c417bc04e3cd9d35d35fbdb96cefa914fd5a644f2403abf7d29b78c34

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.

  • Loads dropped DLL 1 IoCs
  • 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.

  • 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 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4185c612244c3fb7ef8931bbde82986e.exe
    "C:\Users\Admin\AppData\Local\Temp\4185c612244c3fb7ef8931bbde82986e.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1828
    • C:\Users\Admin\AppData\Roaming\leadentop\bestof.exe
      bestof.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1424

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Command and Control

Web Service

1
T1102

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\leadentop\bestof.exe
    MD5

    ce62304c3eff639e1b2352667a569b8a

    SHA1

    5a5cb774b59befe102fe04e93d9853cfbda3334b

    SHA256

    e8356fad49709d2563d2707dbb09f4f1019e30a0ff5836047a11b3d1d84f4d62

    SHA512

    99d77537f2fade1ca2255c16fcd5d64618f0364f15cddb1b6a48814c9a7e59ccdac72db7f0a1cf4b0eac63180264fd58989e43839373d085ecb42ad2b9fe6f41

  • \Users\Admin\AppData\Roaming\leadentop\bestof.exe
    MD5

    ce62304c3eff639e1b2352667a569b8a

    SHA1

    5a5cb774b59befe102fe04e93d9853cfbda3334b

    SHA256

    e8356fad49709d2563d2707dbb09f4f1019e30a0ff5836047a11b3d1d84f4d62

    SHA512

    99d77537f2fade1ca2255c16fcd5d64618f0364f15cddb1b6a48814c9a7e59ccdac72db7f0a1cf4b0eac63180264fd58989e43839373d085ecb42ad2b9fe6f41

  • memory/1424-6-0x0000000000000000-mapping.dmp
  • memory/1424-8-0x0000000004E2A000-0x0000000004E2B000-memory.dmp
    Filesize

    4KB

  • memory/1424-9-0x0000000004F10000-0x0000000004F21000-memory.dmp
    Filesize

    68KB

  • memory/1424-10-0x0000000006710000-0x0000000006721000-memory.dmp
    Filesize

    68KB

  • memory/1424-11-0x0000000073C80000-0x000000007436E000-memory.dmp
    Filesize

    6.9MB

  • memory/1424-12-0x0000000008FD0000-0x0000000008FF4000-memory.dmp
    Filesize

    144KB

  • memory/1424-13-0x0000000009000000-0x0000000009022000-memory.dmp
    Filesize

    136KB

  • memory/1828-2-0x0000000004ECA000-0x0000000004ECB000-memory.dmp
    Filesize

    4KB

  • memory/1828-3-0x0000000005160000-0x0000000005171000-memory.dmp
    Filesize

    68KB

  • memory/1892-4-0x000007FEF60A0000-0x000007FEF631A000-memory.dmp
    Filesize

    2.5MB