Analysis

  • max time kernel
    117s
  • max time network
    131s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    28-12-2023 12:57

General

  • Target

    dfe63105a53c0909bf443d7159a1c712.exe

  • Size

    1.2MB

  • MD5

    dfe63105a53c0909bf443d7159a1c712

  • SHA1

    f89411076a4dff3324d5953c772fe25f5480d385

  • SHA256

    4adc2600049a33c4372e079fb8bef5fc5b3fa52e16ad99e9d662063879f4e41f

  • SHA512

    3ece7904d8e8cad70ce0e7fc6008ad16c67c5280ea953caab9b59b440e7bea1ab5fda18f3e0cf087835d36a0c4b4bde79896e87e1e371712717d9e0c6e067fdb

  • SSDEEP

    24576:iyjytB8BpOvdXr9fnIT6o84BN9xnIhoVx1Djc2J/i2jHAChB2MY:iQytB8B03QXBN9xIhm1rJqsjhBC

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/870414466553118720/Db7VHmIrLjWXphJSt6kM3vwNecGOIfXkCKnhXNxbr6rTECpYTzujmju5FCrRsefHBNBJ

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 3 IoCs
  • 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
  • Suspicious use of SetWindowsHookEx 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dfe63105a53c0909bf443d7159a1c712.exe
    "C:\Users\Admin\AppData\Local\Temp\dfe63105a53c0909bf443d7159a1c712.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:2220

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\44\Process.txt

    Filesize

    397B

    MD5

    023fd4df163957fec12d1c868b0f669f

    SHA1

    a52935ed8f9ea53a4f37205ddb3a4228bf832b76

    SHA256

    c1352388cfa32c3c6419bb26d99846bf2531cdf06a80f56c507ea4e12511c9cf

    SHA512

    826644e1638c49bde03cf04ffd6a36423d96cef3b4680ee287f03d109316cedcd9603f45acdec144f005b5a75ec807693b89ec335156e7ada769fa31a16edaf2

  • memory/2220-0-0x0000000000220000-0x00000000005CE000-memory.dmp

    Filesize

    3.7MB

  • memory/2220-2-0x0000000074D60000-0x000000007544E000-memory.dmp

    Filesize

    6.9MB

  • memory/2220-1-0x0000000000220000-0x00000000005CE000-memory.dmp

    Filesize

    3.7MB

  • memory/2220-3-0x0000000005470000-0x00000000054B0000-memory.dmp

    Filesize

    256KB

  • memory/2220-68-0x0000000000220000-0x00000000005CE000-memory.dmp

    Filesize

    3.7MB

  • memory/2220-69-0x0000000074D60000-0x000000007544E000-memory.dmp

    Filesize

    6.9MB