Analysis

  • max time kernel
    120s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    09-03-2024 17:58

General

  • Target

    Softcoreinstall.exe

  • Size

    274KB

  • MD5

    6d36919d059547c600e70d251864b691

  • SHA1

    5571a82c4fb5274e5d858448e51fca045c89c01c

  • SHA256

    cea25234ff6e1e950f760167de3dc0df47c921914cd81cb340d0d9af1ecf9b4c

  • SHA512

    c329d8929216e2f8c500c26d310c4b137385dd8e24d214feffcac79ac9e8e008f8c0909f83d80e27a76f8b4c0710b566e3dc4489172aa125cbf876ae659eaab9

  • SSDEEP

    6144:mf+BLtABPDFcYumU1SZedpXyEq11afTy4lI1D0hVw:kcNS0dpXyEqJF1Dow

Malware Config

Extracted

Family

44caliber

C2

https://discordapp.com/api/webhooks/1215016857619275786/muCuwo2orfQ-J7FphyDUzXj-bBoSq2lVyekxXRaivuh5cbtqNobITDwhhjVdafZFaU9y

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\Softcoreinstall.exe
    "C:\Users\Admin\AppData\Local\Temp\Softcoreinstall.exe"
    1⤵
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2392

Network

MITRE ATT&CK Matrix ATT&CK v13

Defense Evasion

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Modify Registry

1
T1112

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

    380B

    MD5

    3df77c47bb0a653d042a7ebb11445477

    SHA1

    a05ebd7ae8520e5ec2053bba5b42b8bf2abe3c0f

    SHA256

    d7110bb9a4e0e6ee4760c2d39b6801e0e7f744ba6c61de93408cde1afa7fb53d

    SHA512

    ca26969eacb9e56301f3e564784a215ca00688ed29400346537465e0ba0f3850230255e054466f69390af0ee3d2cb9dad91f0bc7329293cbd0810f6905e34571

  • memory/2392-0-0x0000000000940000-0x000000000098A000-memory.dmp
    Filesize

    296KB

  • memory/2392-2-0x000000001B4A0000-0x000000001B520000-memory.dmp
    Filesize

    512KB

  • memory/2392-1-0x000007FEF5C60000-0x000007FEF664C000-memory.dmp
    Filesize

    9.9MB

  • memory/2392-62-0x000007FEF5C60000-0x000007FEF664C000-memory.dmp
    Filesize

    9.9MB