Analysis

  • max time kernel
    120s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    24-09-2023 13:47

General

  • Target

    c2ade6498bf4fe3991c76104a2d5a8ad880ab4baaf0756f707eb3b22d9734a8f_JC.exe

  • Size

    274KB

  • MD5

    e94364b4239eb39286dd3b07a9ea469c

  • SHA1

    95a3fc71b5a4f63e1ce10c163af55b56f168a6f8

  • SHA256

    c2ade6498bf4fe3991c76104a2d5a8ad880ab4baaf0756f707eb3b22d9734a8f

  • SHA512

    bb924f1c1f8b851c70d5639abed43ed047452bac62580d060229e7a054d5f1be269e2888a3dfe511b434ac5a785dcf37216c95cffd8baaa9432cd930670acc13

  • SSDEEP

    6144:8f+BLtABPDWlR1ZroWT0Ilb5wqlYeJ6lA1D0wIk:RluK0Ilb5/lYed1DMk

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/1101119692103491584/GTMNvMSwfNfgMdtSqTcvjCvj1QDXJYPNxW9vEtgHszOELGeSAQDBrIp9Qf7oWif26BJd

Signatures

  • 44Caliber

    An open source infostealer written in C#.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Looks up external IP address via web service 2 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 behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c2ade6498bf4fe3991c76104a2d5a8ad880ab4baaf0756f707eb3b22d9734a8f_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\c2ade6498bf4fe3991c76104a2d5a8ad880ab4baaf0756f707eb3b22d9734a8f_JC.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:328

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\44\Process.txt

    Filesize

    435B

    MD5

    4c53a0bd5cbe89977eccac2fff22e24a

    SHA1

    30e5443446aa78acb887ec83fdf5f1daf1b50a56

    SHA256

    236d5e25b280f5b016a02ca72b97c6cd6d8e9856cf9361682ee4db71133b2ed6

    SHA512

    baf59a9468652a10cade3c65fb4cea1ac569e40884fbaf4e86c7d77762f220ea3340ec28daf2512dd942e146b055c6cfee22d1e82bfae90b095b626472097d5f

  • memory/328-0-0x0000000000C30000-0x0000000000C7A000-memory.dmp

    Filesize

    296KB

  • memory/328-1-0x000007FEF5680000-0x000007FEF606C000-memory.dmp

    Filesize

    9.9MB

  • memory/328-2-0x000000001A8E0000-0x000000001A960000-memory.dmp

    Filesize

    512KB

  • memory/328-50-0x000007FEF5680000-0x000007FEF606C000-memory.dmp

    Filesize

    9.9MB