Analysis

  • max time kernel
    122s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220310-en
  • submitted
    23-03-2022 02:25

General

  • Target

    63e0efb7ec667e935cd34b2a76da22e48f816b5f98b3c14870b378f681f98c8e.exe

  • Size

    274KB

  • MD5

    5aee3345a3ef18204fa6849a02275218

  • SHA1

    eaa6fde9136d6ad33230d5674d43b9b821f155ab

  • SHA256

    63e0efb7ec667e935cd34b2a76da22e48f816b5f98b3c14870b378f681f98c8e

  • SHA512

    d4406b0ca7e7755040620f3b37d7b84e8b2ded470f523a91022433b128a3fbd0e46cad962902e7f1d2ab25b8ac63f0d14201051824fe08fd76e0065f15401ea9

Malware Config

Extracted

Family

44caliber

C2

https://discordapp.com/api/webhooks/955224498146275348/pLxIEeiW2qrhrboJbcauxZQ0_RZDszpNNPmByT2Oic1imZEWt8KB4YmuUkeKx8HWKQuN

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\63e0efb7ec667e935cd34b2a76da22e48f816b5f98b3c14870b378f681f98c8e.exe
    "C:\Users\Admin\AppData\Local\Temp\63e0efb7ec667e935cd34b2a76da22e48f816b5f98b3c14870b378f681f98c8e.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2044

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/2044-134-0x00000000000A0000-0x00000000000EA000-memory.dmp

    Filesize

    296KB

  • memory/2044-135-0x00007FF8947B0000-0x00007FF895271000-memory.dmp

    Filesize

    10.8MB

  • memory/2044-136-0x0000000000890000-0x0000000000892000-memory.dmp

    Filesize

    8KB