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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/01/2025, 16:02

General

  • Target

    PI ITS15235.xll

  • Size

    3KB

  • MD5

    d137ab6fd155d9db65d23b1dd7aec43e

  • SHA1

    4870806f3fa9d3bb3cd65cfaa9c47f7d83dfaa21

  • SHA256

    ffc0753059b38955158a02220aea934a651977953f07e9cc1b4ea43797d3481b

  • SHA512

    064b9fa2b89bdb0bcf8b0fa00ebb78f9b817f23f1b6ab4d8551541fa64cf6c9a754200a5c2dc184a444d6ecd14ffda6df4c78a8356c0887d7f11e6f090988daf

Malware Config

Extracted

Family

vipkeylogger

C2

https://api.telegram.org/bot7354418955:AAH10FAR8IByRBtd_Qs69uwN7lnhl-2X18k/sendMessage?chat_id=6851554211

Signatures

  • VIPKeylogger

    VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.

  • Vipkeylogger family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 3 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 3 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 17 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\PI ITS15235.xll"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4760
    • C:\Users\Admin\AppData\Roaming\regasms.exe
      C:\Users\Admin\AppData\Roaming\regasms.exe
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:216
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\regasms.exe"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:740
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\klGvCRWUCzHnCD.exe"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1728
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\klGvCRWUCzHnCD" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3479.tmp"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1632
      • C:\Users\Admin\AppData\Roaming\regasms.exe
        C:\Users\Admin\AppData\Roaming\regasms.exe
        3⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:4932

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    d85ba6ff808d9e5444a4b369f5bc2730

    SHA1

    31aa9d96590fff6981b315e0b391b575e4c0804a

    SHA256

    84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

    SHA512

    8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    77d622bb1a5b250869a3238b9bc1402b

    SHA1

    d47f4003c2554b9dfc4c16f22460b331886b191b

    SHA256

    f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

    SHA512

    d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

  • C:\Users\Admin\AppData\Local\Temp\PI ITS15235.xll

    Filesize

    3KB

    MD5

    d137ab6fd155d9db65d23b1dd7aec43e

    SHA1

    4870806f3fa9d3bb3cd65cfaa9c47f7d83dfaa21

    SHA256

    ffc0753059b38955158a02220aea934a651977953f07e9cc1b4ea43797d3481b

    SHA512

    064b9fa2b89bdb0bcf8b0fa00ebb78f9b817f23f1b6ab4d8551541fa64cf6c9a754200a5c2dc184a444d6ecd14ffda6df4c78a8356c0887d7f11e6f090988daf

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dbzeiiak.cq2.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp3479.tmp

    Filesize

    1KB

    MD5

    492c80e739e460bcf9363e0386567883

    SHA1

    21640ff7debaecfcb1afea6c370fdee8ad63fac2

    SHA256

    b47680d527eba2f46e6232e7c822091295c11ddb186b87d469b2250f837a4008

    SHA512

    8f7d2d0264e8ec09a78459d30b12b73a7ddfb84e9e1b8cee761a7ee17646cbc5616a0abed27326ffa173c7efda05500f4330f5915fb304e6a0ab21cd99dbca0c

  • C:\Users\Admin\AppData\Roaming\regasms.exe

    Filesize

    1.0MB

    MD5

    7e38676fd883ddb05265c87021166681

    SHA1

    8c02ce697b10a9055fbb367b55a38a060c86ba0f

    SHA256

    68cbe81c23f778d1d4277ca334bb770c6178e9bd0430e78d1ecc3fe814b23a67

    SHA512

    29daea733120587e4fc6bc29df2a59bec2121c3a3e50809b71d6733df6e1d91bde7b510002c2394ee7add4265123333652c4623677292cf9fca8a459745b3d2f

  • memory/216-79-0x00007FFD9DB90000-0x00007FFD9DD85000-memory.dmp

    Filesize

    2.0MB

  • memory/216-51-0x000000001FD70000-0x000000001FDFC000-memory.dmp

    Filesize

    560KB

  • memory/216-50-0x00000000017A0000-0x00000000017B4000-memory.dmp

    Filesize

    80KB

  • memory/216-49-0x00007FFD9DB90000-0x00007FFD9DD85000-memory.dmp

    Filesize

    2.0MB

  • memory/216-48-0x0000000002F90000-0x0000000002FB6000-memory.dmp

    Filesize

    152KB

  • memory/216-45-0x0000000000650000-0x0000000000756000-memory.dmp

    Filesize

    1.0MB

  • memory/216-44-0x00007FFD9DB90000-0x00007FFD9DD85000-memory.dmp

    Filesize

    2.0MB

  • memory/1728-62-0x000001BB9A360000-0x000001BB9A382000-memory.dmp

    Filesize

    136KB

  • memory/4760-8-0x00007FFD5BBB0000-0x00007FFD5BBC0000-memory.dmp

    Filesize

    64KB

  • memory/4760-9-0x00007FFD9DB90000-0x00007FFD9DD85000-memory.dmp

    Filesize

    2.0MB

  • memory/4760-14-0x00007FFD9DB90000-0x00007FFD9DD85000-memory.dmp

    Filesize

    2.0MB

  • memory/4760-13-0x00007FFD5BBB0000-0x00007FFD5BBC0000-memory.dmp

    Filesize

    64KB

  • memory/4760-11-0x00007FFD9DB90000-0x00007FFD9DD85000-memory.dmp

    Filesize

    2.0MB

  • memory/4760-18-0x00007FFD9DB90000-0x00007FFD9DD85000-memory.dmp

    Filesize

    2.0MB

  • memory/4760-16-0x00007FFD9DB90000-0x00007FFD9DD85000-memory.dmp

    Filesize

    2.0MB

  • memory/4760-15-0x00007FFD9DB90000-0x00007FFD9DD85000-memory.dmp

    Filesize

    2.0MB

  • memory/4760-12-0x00007FFD9DB90000-0x00007FFD9DD85000-memory.dmp

    Filesize

    2.0MB

  • memory/4760-47-0x00007FFD9DB90000-0x00007FFD9DD85000-memory.dmp

    Filesize

    2.0MB

  • memory/4760-46-0x000000005A8B0000-0x000000005A8B5000-memory.dmp

    Filesize

    20KB

  • memory/4760-10-0x00007FFD9DB90000-0x00007FFD9DD85000-memory.dmp

    Filesize

    2.0MB

  • memory/4760-1-0x00007FFD9DC2D000-0x00007FFD9DC2E000-memory.dmp

    Filesize

    4KB

  • memory/4760-17-0x00007FFD9DB90000-0x00007FFD9DD85000-memory.dmp

    Filesize

    2.0MB

  • memory/4760-6-0x00007FFD9DB90000-0x00007FFD9DD85000-memory.dmp

    Filesize

    2.0MB

  • memory/4760-7-0x00007FFD5DC10000-0x00007FFD5DC20000-memory.dmp

    Filesize

    64KB

  • memory/4760-4-0x00007FFD5DC10000-0x00007FFD5DC20000-memory.dmp

    Filesize

    64KB

  • memory/4760-5-0x00007FFD9DB90000-0x00007FFD9DD85000-memory.dmp

    Filesize

    2.0MB

  • memory/4760-2-0x00007FFD5DC10000-0x00007FFD5DC20000-memory.dmp

    Filesize

    64KB

  • memory/4760-3-0x00007FFD5DC10000-0x00007FFD5DC20000-memory.dmp

    Filesize

    64KB

  • memory/4760-0-0x00007FFD5DC10000-0x00007FFD5DC20000-memory.dmp

    Filesize

    64KB

  • memory/4932-76-0x0000000140000000-0x0000000140046000-memory.dmp

    Filesize

    280KB

  • memory/4932-85-0x000000001ECA0000-0x000000001EE62000-memory.dmp

    Filesize

    1.8MB

  • memory/4932-86-0x0000000003290000-0x00000000032E0000-memory.dmp

    Filesize

    320KB

  • memory/4932-87-0x000000001F3A0000-0x000000001F8C8000-memory.dmp

    Filesize

    5.2MB