Overview

overview

10

Static

static

781ce17320...6b.exe

windows7_x64

10

781ce17320...6b.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    133s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    12/03/2022, 07:20

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General

  • Target
    781ce17320d0d4831699551b71719d6b.exe
  • Size 273KB
  • Sample220312-h54rdacfhr
  • SHA256 74afacc1e49302d3c5061cd9f1133fb89a4ddfb6da46d955a56b404bd6a3df66
  • MD5 SHA1 SHA512
Score
10/10
arkeidefaultdiscoveryspywarestealersuricata

Malware Config

Extracted

Family

  • arkei

Botnet

  • Default

C2

  • http://coin-file-file-19.com/tratata.php

Signatures

  • Arkei

    Arkei is an infostealer written in C++.

    stealerarkei
  • suricata: ET MALWARE Win32/Arkei Stealer CnC Checkin (GET)

    suricata: ET MALWARE Win32/Arkei Stealer CnC Checkin (GET)

    suricata
  • suricata: ET MALWARE Win32/Arkei Stealer CnC Checkin (POST)

    suricata: ET MALWARE Win32/Arkei Stealer CnC Checkin (POST)

    suricata
  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
    spyware
  • Checks installed software on the system 1 TTPs

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

    discovery
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\781ce17320d0d4831699551b71719d6b.exe
    "C:\Users\Admin\AppData\Local\Temp\781ce17320d0d4831699551b71719d6b.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1016
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\781ce17320d0d4831699551b71719d6b.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5112
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 5
        3⤵
        • Delays execution with timeout.exe
        PID:2072
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1016 -s 1572
      2⤵
      • Program crash
      PID:5020
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1016 -ip 1016
    1⤵
      PID:5048

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/1016-130-0x0000000000609000-0x000000000061C000-memory.dmp
          Download

          memory/1016-131-0x0000000000609000-0x000000000061C000-memory.dmp
          Download

          memory/1016-132-0x00000000005D0000-0x00000000005EF000-memory.dmp
          Download

          memory/1016-133-0x0000000000400000-0x0000000000475000-memory.dmp
          Download