Analysis

  • max time kernel
    120s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    25-09-2023 02:23

General

  • Target

    c2ade6498bf4fe3991c76104a2d5a8ad880ab4baaf0756f707eb3b22d9734a8f.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.exe
    "C:\Users\Admin\AppData\Local\Temp\c2ade6498bf4fe3991c76104a2d5a8ad880ab4baaf0756f707eb3b22d9734a8f.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2332

Network

MITRE ATT&CK Matrix ATT&CK v13

Credential Access

Unsecured Credentials

2
T1552

Credentials In Files

2
T1552.001

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Collection

Data from Local System

2
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\44\Process.txt
    Filesize

    444B

    MD5

    1fc114257454a331ced8b4479b942951

    SHA1

    3068e7f465287e0f853858a4bc991a5f8aaaef17

    SHA256

    2936e6299f349596a25855dd1e8acf7c7eb30d630bee843ecac495ce3d8d8bb0

    SHA512

    d200599306e12439309c0b77cff0c6cca3ed2523fb862935d2b209e50ee8cfd9f7134cacaf2f253a8b6bf007f6ee669cc418a2feda177272fdcc7b6473d12645

  • memory/2332-0-0x0000000000820000-0x000000000086A000-memory.dmp
    Filesize

    296KB

  • memory/2332-1-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp
    Filesize

    9.9MB

  • memory/2332-2-0x000000001AD00000-0x000000001AD80000-memory.dmp
    Filesize

    512KB

  • memory/2332-52-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp
    Filesize

    9.9MB