Analysis

  • max time kernel
    15s
  • max time network
    18s
  • platform
    windows7_x64
  • resource
    win7-20231023-en
  • resource tags

    arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
  • submitted
    25-10-2023 03:27

General

  • Target

    2_stealer.exe

  • Size

    226KB

  • MD5

    a09c37144ca538b0bc4499bf59c691f1

  • SHA1

    eb997ac06e1cf56add73e5e4eed3c10a297d4bd5

  • SHA256

    45d58041f3aacdf2d3536c39e1db81e23e30c6372ca2bd3be8b2675d472b5d44

  • SHA512

    b449997aa327b281ceade8f11a14bdf1e197fb86e7dffbcfcb3d59c09532108c317f437320b267818e2919c06da21d31db4b6dca745470f7a1ed4f37455afebf

  • SSDEEP

    3072:NMU8dW6hNmf/ft5OPQFFlNqgAJcxoNF+rSoJdjayW+RCD9KrbLQ5inPCCb7bv/h1:NMPcnTMkFzqylSofjamrbLB/WEO5

Malware Config

Extracted

Family

jester

Botnet

monika_galager

C2

http://jesterdcuxzbey4xvlwwheoecpltru5be2mzuk4w7a7nrhckdjjhrbyd.onion/report/monika_galager

https://api.anonfiles.com/upload?token=d26d620842507144

Mutex

c6b4a73b-035e-4027-8c9d-f30fcd7f128e

Attributes
  • license_key

    2389157FE6BD3ADCBC3E0EAEF2136325

Signatures

  • Detects Eternity stealer 1 IoCs
  • Eternity

    Eternity Project is a malware kit offering an info stealer, clipper, worm, coin miner, ransomware, and DDoS bot.

  • Jester

    Jester is an information stealer malware written in C#.

  • Deletes itself 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • 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).

  • 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 2 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2_stealer.exe
    "C:\Users\Admin\AppData\Local\Temp\2_stealer.exe"
    1⤵
    • Accesses Microsoft Outlook profiles
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:816
    • C:\Windows\system32\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2964
      • C:\Windows\system32\chcp.com
        chcp 65001
        3⤵
          PID:3032
        • C:\Windows\system32\netsh.exe
          netsh wlan show profile
          3⤵
            PID:2120
          • C:\Windows\system32\findstr.exe
            findstr All
            3⤵
              PID:2080
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\2_stealer.exe"
            2⤵
            • Deletes itself
            • Suspicious use of WriteProcessMemory
            PID:2712
            • C:\Windows\system32\chcp.com
              chcp 65001
              3⤵
                PID:2820
              • C:\Windows\system32\PING.EXE
                ping 127.0.0.1
                3⤵
                • Runs ping.exe
                PID:2716

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • memory/816-0-0x0000000000F00000-0x0000000000F3E000-memory.dmp

            Filesize

            248KB

          • memory/816-1-0x000007FEF55A0000-0x000007FEF5F8C000-memory.dmp

            Filesize

            9.9MB

          • memory/816-2-0x000000001AEB0000-0x000000001AF30000-memory.dmp

            Filesize

            512KB

          • memory/816-5-0x000007FEF55A0000-0x000007FEF5F8C000-memory.dmp

            Filesize

            9.9MB