Analysis

  • max time kernel
    2s
  • max time network
    121s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-12-2023 20:39

General

  • Target

    117b28e18c3cdee58cee6f5b4c6b708b.exe

  • Size

    1.2MB

  • MD5

    117b28e18c3cdee58cee6f5b4c6b708b

  • SHA1

    bf3f7cf88712b01a8123d3836bf19f25b17a70ec

  • SHA256

    b356d0dfecf39874a2bbbe4cae33f580d91a8991860df23314f35950f574485c

  • SHA512

    3a2331e1f7266a262e308eab726ee43127631c7348e7931186d13f54577abb1a18a92d6a6664dc69a9cbe9098914bd0e6173d1adc634a545b9c87b3bedd600ea

  • SSDEEP

    24576:8Shu0Xd9baM1zjL0KfafjvjZLJNWttqmO96tY:8SL7VUfjJWttlO9IY

Malware Config

Extracted

Family

44caliber

C2

https://discordapp.com/api/webhooks/859014405580783637/J-rOLcLQORAp4rSIpre0H46Lhmzd8QK1hgRFNA4mqYSEz6dtJRq9HsK-id725NgqZTvK

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.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\117b28e18c3cdee58cee6f5b4c6b708b.exe
    "C:\Users\Admin\AppData\Local\Temp\117b28e18c3cdee58cee6f5b4c6b708b.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:1244

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1244-0-0x00000000003A0000-0x000000000074E000-memory.dmp

    Filesize

    3.7MB

  • memory/1244-2-0x0000000073EF0000-0x00000000746A0000-memory.dmp

    Filesize

    7.7MB

  • memory/1244-3-0x0000000005860000-0x0000000005870000-memory.dmp

    Filesize

    64KB

  • memory/1244-4-0x0000000006220000-0x00000000062B2000-memory.dmp

    Filesize

    584KB

  • memory/1244-1-0x00000000003A0000-0x000000000074E000-memory.dmp

    Filesize

    3.7MB

  • memory/1244-39-0x0000000006C70000-0x0000000007214000-memory.dmp

    Filesize

    5.6MB

  • memory/1244-130-0x0000000007CD0000-0x0000000007D36000-memory.dmp

    Filesize

    408KB

  • memory/1244-134-0x00000000003A0000-0x000000000074E000-memory.dmp

    Filesize

    3.7MB

  • memory/1244-135-0x0000000073EF0000-0x00000000746A0000-memory.dmp

    Filesize

    7.7MB