Analysis

  • max time kernel
    120s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    26-03-2024 19:15

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 2 IoCs
  • 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
  • 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
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:1928

Network

MITRE ATT&CK Matrix ATT&CK v13

Credential Access

Unsecured Credentials

2
T1552

Credentials In Files

2
T1552.001

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Collection

Data from Local System

2
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\44\Process.txt
    Filesize

    397B

    MD5

    eb9515d361f945a11ef5b7b10a02bc89

    SHA1

    1e872caf5026f9062fb7b5c5b6ba3b9e31d16141

    SHA256

    e0f12f4e19a1b8d00d503f56b3284a87f9751417be7fd1279f25ec0e51265b47

    SHA512

    c75d05af3aaad0711b8fe9217f3b12f9042dd62225c74e5922dc04462ef5d4448e24dd68930338169fdcd648231d3c8353bd4324af86832a9e989bc5888aded2

  • memory/1928-0-0x00000000002F0000-0x000000000069E000-memory.dmp
    Filesize

    3.7MB

  • memory/1928-2-0x0000000074680000-0x0000000074D6E000-memory.dmp
    Filesize

    6.9MB

  • memory/1928-1-0x00000000002F0000-0x000000000069E000-memory.dmp
    Filesize

    3.7MB

  • memory/1928-3-0x0000000005C80000-0x0000000005CC0000-memory.dmp
    Filesize

    256KB

  • memory/1928-54-0x00000000002F0000-0x000000000069E000-memory.dmp
    Filesize

    3.7MB

  • memory/1928-55-0x0000000074680000-0x0000000074D6E000-memory.dmp
    Filesize

    6.9MB