Analysis

  • max time kernel
    120s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    20-12-2023 17:11

General

  • Target

    f3330d7a86d8cb0ce9204b47ee06ddd3.exe

  • Size

    2.4MB

  • MD5

    f3330d7a86d8cb0ce9204b47ee06ddd3

  • SHA1

    1522401245c4146db020037ed4443958e92e78d5

  • SHA256

    8df770dcd72112d8969af5f61f16f77141ea164b2428a848d76f6c3f51ffc497

  • SHA512

    5538f3d942539bff64550b32a4d49567e594748761e2b333b5558322e4281b73d84f29af6ff397d29bfd7552096ae1c10507daa502405424e392f8904251825f

  • SSDEEP

    49152:Ngrc4yFNNhlcdFZVQLib/z2clNClR/m6Rse2vmC7di7WW4LASLKB6AfUnAQ6x0uI:CrIqc2GNaBbGU05GvBoFTvmR

Malware Config

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.

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f3330d7a86d8cb0ce9204b47ee06ddd3.exe
    "C:\Users\Admin\AppData\Local\Temp\f3330d7a86d8cb0ce9204b47ee06ddd3.exe"
    1⤵
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:1108

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    412B

    MD5

    327536cc13fcab0c3b1175e93b0064cb

    SHA1

    5d96c69cb5dc718fef4f94e4b0a867b35ae24670

    SHA256

    110cb235aba3ebcb80f2287aa04bd0450ec4aa3bccd3e64d1ba6190deee4af2b

    SHA512

    50c8af8aa6ca3803d2df06632b753b9893e4d459f451320ff81418d61ebf59f194292f8c16183b33d218f2e11bf16b5b7a967673dc2dbe67b1d1fa13c7a4b8a6

  • memory/1108-0-0x00000000000C0000-0x0000000000336000-memory.dmp

    Filesize

    2.5MB

  • memory/1108-1-0x000007FEF5BA0000-0x000007FEF658C000-memory.dmp

    Filesize

    9.9MB

  • memory/1108-2-0x000000001AEA0000-0x000000001AF20000-memory.dmp

    Filesize

    512KB

  • memory/1108-3-0x00000000003C0000-0x00000000003CA000-memory.dmp

    Filesize

    40KB

  • memory/1108-65-0x000000001AEA0000-0x000000001AF20000-memory.dmp

    Filesize

    512KB

  • memory/1108-66-0x000007FEF5BA0000-0x000007FEF658C000-memory.dmp

    Filesize

    9.9MB