Analysis

  • max time kernel
    173s
  • max time network
    191s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-11-2022 14:09

General

  • Target

    2a82d6dca9191d0256db3f5b1dd68860c7901699f5297cb22a3bbbe3c339029c.exe

  • Size

    952KB

  • MD5

    d07010e606a7ce5c26a7e8fca6ede289

  • SHA1

    0301b1d31f291af8c9268dcfddb1a9b708fb5064

  • SHA256

    2a82d6dca9191d0256db3f5b1dd68860c7901699f5297cb22a3bbbe3c339029c

  • SHA512

    a91d72788a3e9468b59e3ae0326036962f0648be6602ab953d9e6b83cdffa9570c36b2fa79b46373805d88e4b2bb4bc2a4f08a42f23d1999cf575bcece945674

  • SSDEEP

    24576:IaaIERvwfrJlJjZ55EF2KdZ8shV4VTci/Vxv4Oa:baFBCljf2Dks/4Oitxvg

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Uses the VBS compiler for execution 1 TTPs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2a82d6dca9191d0256db3f5b1dd68860c7901699f5297cb22a3bbbe3c339029c.exe
    "C:\Users\Admin\AppData\Local\Temp\2a82d6dca9191d0256db3f5b1dd68860c7901699f5297cb22a3bbbe3c339029c.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops file in Drivers directory
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1980
    • C:\Users\Admin\AppData\Local\Temp\2a82d6dca9191d0256db3f5b1dd68860c7901699f5297cb22a3bbbe3c339029c.exe
      "C:\Users\Admin\AppData\Local\Temp\2a82d6dca9191d0256db3f5b1dd68860c7901699f5297cb22a3bbbe3c339029c.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3548
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" -f "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"
        3⤵
          PID:4500
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
          "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" -f "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"
          3⤵
            PID:1216

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Execution

      Scripting

      1
      T1064

      Persistence

      Winlogon Helper DLL

      1
      T1004

      Defense Evasion

      Modify Registry

      1
      T1112

      Scripting

      1
      T1064

      Credential Access

      Credentials in Files

      1
      T1081

      Collection

      Data from Local System

      1
      T1005

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\holdermail.txt
        Filesize

        1KB

        MD5

        01e7975c708365983265ae40d604beb4

        SHA1

        f1c793c9b7a312d355cd944928ba9272bbeec44e

        SHA256

        95d7aeb5f67dc33d0b62d02b26a5d469436f58f2246fd95189a8b86220bc9a40

        SHA512

        9c67c306fbb0e191ea7af01388c6a99714c353590d99887ddd0b0ceee3f6cd3af2e7b2c8d1d22a5a34dac746e4b2156876d935a658afc9a1d38597fd4922e023

      • memory/1216-140-0x0000000000400000-0x000000000048E000-memory.dmp
        Filesize

        568KB

      • memory/1216-147-0x0000000000400000-0x000000000048E000-memory.dmp
        Filesize

        568KB

      • memory/1216-145-0x0000000000400000-0x000000000048E000-memory.dmp
        Filesize

        568KB

      • memory/1216-142-0x0000000000400000-0x000000000048E000-memory.dmp
        Filesize

        568KB

      • memory/1216-138-0x0000000000000000-mapping.dmp
      • memory/1980-133-0x0000000074FF0000-0x00000000755A1000-memory.dmp
        Filesize

        5.7MB

      • memory/1980-132-0x0000000074FF0000-0x00000000755A1000-memory.dmp
        Filesize

        5.7MB

      • memory/3548-136-0x0000000074FF0000-0x00000000755A1000-memory.dmp
        Filesize

        5.7MB

      • memory/3548-137-0x0000000074FF0000-0x00000000755A1000-memory.dmp
        Filesize

        5.7MB

      • memory/3548-135-0x0000000000400000-0x0000000000522000-memory.dmp
        Filesize

        1.1MB

      • memory/3548-134-0x0000000000000000-mapping.dmp
      • memory/4500-141-0x0000000000400000-0x000000000048B000-memory.dmp
        Filesize

        556KB

      • memory/4500-139-0x0000000000000000-mapping.dmp
      • memory/4500-143-0x0000000000400000-0x000000000048B000-memory.dmp
        Filesize

        556KB

      • memory/4500-144-0x0000000000400000-0x000000000048B000-memory.dmp
        Filesize

        556KB

      • memory/4500-146-0x0000000000400000-0x000000000048B000-memory.dmp
        Filesize

        556KB

      • memory/4500-149-0x0000000000400000-0x000000000048B000-memory.dmp
        Filesize

        556KB