Analysis

  • max time kernel
    144s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    01-03-2022 18:13

General

  • Target

    d4515c61a5b8ec675d401277f69a863e6ef01875e749e027ef6bde29674fc291.exe

  • Size

    273KB

  • MD5

    f16b30ce57b3d0678d55d91953597faa

  • SHA1

    7348bfa2fd87b1e5f556c54fa650eb376c60006d

  • SHA256

    d4515c61a5b8ec675d401277f69a863e6ef01875e749e027ef6bde29674fc291

  • SHA512

    fe22efa8d7ac0688be13b3fa2e168c9adfc5afa5d39132213a45f1ea1b9d2cd550f15655885cd819c6b8f94381f69620281b38ec907c5d0070d4442baf99f448

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/939927794656370699/MQUodH1jMxGoELXDI7vt3uVKvZAZN_FBkYRFlTiMVxHGCFnEzvPC7JNVH8-ESePeneQo

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\d4515c61a5b8ec675d401277f69a863e6ef01875e749e027ef6bde29674fc291.exe
    "C:\Users\Admin\AppData\Local\Temp\d4515c61a5b8ec675d401277f69a863e6ef01875e749e027ef6bde29674fc291.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2000

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2000-130-0x0000000000B60000-0x0000000000BAA000-memory.dmp

    Filesize

    296KB

  • memory/2000-131-0x00007FFE67683000-0x00007FFE67685000-memory.dmp

    Filesize

    8KB

  • memory/2000-132-0x00000000011E0000-0x00000000011E2000-memory.dmp

    Filesize

    8KB