General

  • Target

    file.exe

  • Size

    93KB

  • Sample

    230506-pl6vysbd4z

  • MD5

    97a78d084446851cb1e74b4bb2045f3a

  • SHA1

    efdf7e05c2d0b7993d6f4ce6642f2f536116ad36

  • SHA256

    e0e267a1da22b796f4f8a7b84a81d0f0a461183cdc03d267a75e34d9fc497ccd

  • SHA512

    d81e584282ba21f5b821e6c237ab5aeb987b009d689eb503f1f7019bb7698f5345a43b470390521928ebb16ca9ac8b6876387fd3987a501ab129e8661d93df2c

  • SSDEEP

    1536:88bw0uWZGvOZnnlJ5t9UxrAwIVtdSDMvNcNIOOnQl+sb9m+dUs:bbhf5nj1wIvdSDMvNcNIObQso+d9

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://62.204.41.23/o.png

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://62.204.41.23/r.png

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://62.204.41.23/file.png

Extracted

Family

systembc

C2

185.161.248.16:4440

Extracted

Family

redline

Botnet

[ PRO ]

C2

185.161.248.16:26885

Attributes
  • auth_value

    b4958da54d1cdd9d9b28330afda1cc3c

Targets

    • Target

      file.exe

    • Size

      93KB

    • MD5

      97a78d084446851cb1e74b4bb2045f3a

    • SHA1

      efdf7e05c2d0b7993d6f4ce6642f2f536116ad36

    • SHA256

      e0e267a1da22b796f4f8a7b84a81d0f0a461183cdc03d267a75e34d9fc497ccd

    • SHA512

      d81e584282ba21f5b821e6c237ab5aeb987b009d689eb503f1f7019bb7698f5345a43b470390521928ebb16ca9ac8b6876387fd3987a501ab129e8661d93df2c

    • SSDEEP

      1536:88bw0uWZGvOZnnlJ5t9UxrAwIVtdSDMvNcNIOOnQl+sb9m+dUs:bbhf5nj1wIvdSDMvNcNIObQso+d9

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • SystemBC

      SystemBC is a proxy and remote administration tool first seen in 2019.

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • XMRig Miner payload

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Loads dropped DLL

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks