Analysis

  • max time kernel
    35s
  • max time network
    36s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    10-03-2021 08:33

General

  • Target

    45899429584c6e771bfa9f9a9e37ca4a.exe

  • Size

    555KB

  • MD5

    45899429584c6e771bfa9f9a9e37ca4a

  • SHA1

    0b28d9977d2cb0e818c6206752cf9aec56bfac98

  • SHA256

    0b3126faa1c9aefa49138147a91524c66e466f572dcac2e0121c53a187ccb076

  • SHA512

    8159fabef442fa2c3f2c8efd19dd7eb704b90e5fdb6dfee62561bc755b8e4e7ef7db7c70a91297e9786548f7fa52424d26943a57d3f1566ce695f0473e419cc9

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
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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.

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\45899429584c6e771bfa9f9a9e37ca4a.exe
    "C:\Users\Admin\AppData\Local\Temp\45899429584c6e771bfa9f9a9e37ca4a.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1656
    • C:\Users\Admin\AppData\Roaming\purefoe\noabu.exe
      noabu.exe
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1688

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\purefoe\noabu.exe
    MD5

    ae4ac666d4c6073f23e078629ee01bba

    SHA1

    606a6e995b3754ff1494730242cf9fdf65936740

    SHA256

    5d63d1c4eb964d27d53d83b399b38ffad6609b204b8741e5626d4427cc7421af

    SHA512

    19d566f149b780dbd37aaa1ae1d72572bfb078da9f320c6fca04d0ea85b97431263104720910972d332ca94cb2801eef323388ad6a8e76c34d85336ec13426ef

  • \Users\Admin\AppData\Roaming\purefoe\noabu.exe
    MD5

    ae4ac666d4c6073f23e078629ee01bba

    SHA1

    606a6e995b3754ff1494730242cf9fdf65936740

    SHA256

    5d63d1c4eb964d27d53d83b399b38ffad6609b204b8741e5626d4427cc7421af

    SHA512

    19d566f149b780dbd37aaa1ae1d72572bfb078da9f320c6fca04d0ea85b97431263104720910972d332ca94cb2801eef323388ad6a8e76c34d85336ec13426ef

  • memory/1528-6-0x000007FEF7BD0000-0x000007FEF7E4A000-memory.dmp
    Filesize

    2.5MB

  • memory/1656-3-0x00000000765A1000-0x00000000765A3000-memory.dmp
    Filesize

    8KB

  • memory/1656-4-0x0000000000300000-0x00000000003CF000-memory.dmp
    Filesize

    828KB

  • memory/1656-5-0x0000000000400000-0x00000000004D5000-memory.dmp
    Filesize

    852KB

  • memory/1656-2-0x0000000002F90000-0x0000000002FA1000-memory.dmp
    Filesize

    68KB

  • memory/1688-10-0x0000000000D80000-0x0000000000D91000-memory.dmp
    Filesize

    68KB

  • memory/1688-8-0x0000000000000000-mapping.dmp
  • memory/1688-11-0x0000000002260000-0x0000000002271000-memory.dmp
    Filesize

    68KB

  • memory/1688-13-0x0000000000230000-0x0000000000265000-memory.dmp
    Filesize

    212KB

  • memory/1688-14-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1688-12-0x00000000744C0000-0x0000000074BAE000-memory.dmp
    Filesize

    6.9MB

  • memory/1688-15-0x00000000026A0000-0x00000000026C8000-memory.dmp
    Filesize

    160KB

  • memory/1688-17-0x0000000004C72000-0x0000000004C73000-memory.dmp
    Filesize

    4KB

  • memory/1688-16-0x0000000004C71000-0x0000000004C72000-memory.dmp
    Filesize

    4KB

  • memory/1688-18-0x0000000004C73000-0x0000000004C74000-memory.dmp
    Filesize

    4KB

  • memory/1688-19-0x00000000026D0000-0x00000000026F6000-memory.dmp
    Filesize

    152KB

  • memory/1688-21-0x0000000004C74000-0x0000000004C76000-memory.dmp
    Filesize

    8KB