Analysis

  • max time kernel
    127s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-11-2024 08:23

General

  • Target

    99e9a78e9273425218ba2f13341f35d355fc557e5ae08caa199ee060af43e1b1.exe

  • Size

    784KB

  • MD5

    a8751e8b102b8c302567e97f7a7e38b2

  • SHA1

    7cccc70baeb00dc525ca04283bd316bbd6882f5c

  • SHA256

    99e9a78e9273425218ba2f13341f35d355fc557e5ae08caa199ee060af43e1b1

  • SHA512

    c7426d2f825209c181eff884a6567a90cc06ba2e89291defdc4b016b1683bc9a6500e95cee3dc60229a9665f07fc1d9e802671f65b693c0ef251059c6ea99d6a

  • SSDEEP

    24576:5rMpzxW+C+1EZ8ZrXEhXDjedw3ngAtOdZ:+W5IE/IGtOd

Malware Config

Extracted

Family

vipkeylogger

C2

https://api.telegram.org/bot7354310989:AAFiywMtNTHtm7OibIYk_SgHQrpZnGJKZ0Q/sendMessage?chat_id=5308564409

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 1 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 1 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).

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\99e9a78e9273425218ba2f13341f35d355fc557e5ae08caa199ee060af43e1b1.exe
    "C:\Users\Admin\AppData\Local\Temp\99e9a78e9273425218ba2f13341f35d355fc557e5ae08caa199ee060af43e1b1.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3152
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\plEPfCfyDlNhYj.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3440
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\plEPfCfyDlNhYj" /XML "C:\Users\Admin\AppData\Local\Temp\tmp347.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4236
    • C:\Users\Admin\AppData\Local\Temp\99e9a78e9273425218ba2f13341f35d355fc557e5ae08caa199ee060af43e1b1.exe
      "C:\Users\Admin\AppData\Local\Temp\99e9a78e9273425218ba2f13341f35d355fc557e5ae08caa199ee060af43e1b1.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2444

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\99e9a78e9273425218ba2f13341f35d355fc557e5ae08caa199ee060af43e1b1.exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_amumpa2h.xbr.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp347.tmp

    Filesize

    1KB

    MD5

    44bb325b913a7716d2d4e44360b1abb5

    SHA1

    ddc1478759c5413ae3ad168168015ea2b5040d75

    SHA256

    8603e8a09bd914109caab74dbfc0d01f27c72ef5ab1dee32e853a76b7a89790a

    SHA512

    23a691ae6342345a44521152710edef8ee37f0849d9d9c56a35323028ad23812ee12d657b6d178108a71fee9d533687000dec5f13ecf2d522c7b0dfc12a080e9

  • memory/2444-68-0x0000000074500000-0x0000000074CB0000-memory.dmp

    Filesize

    7.7MB

  • memory/2444-37-0x0000000074500000-0x0000000074CB0000-memory.dmp

    Filesize

    7.7MB

  • memory/2444-65-0x00000000069D0000-0x0000000006B92000-memory.dmp

    Filesize

    1.8MB

  • memory/2444-33-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/2444-66-0x0000000006850000-0x00000000068A0000-memory.dmp

    Filesize

    320KB

  • memory/2444-67-0x00000000070D0000-0x00000000075FC000-memory.dmp

    Filesize

    5.2MB

  • memory/3152-5-0x0000000074500000-0x0000000074CB0000-memory.dmp

    Filesize

    7.7MB

  • memory/3152-10-0x0000000006770000-0x00000000067FE000-memory.dmp

    Filesize

    568KB

  • memory/3152-0-0x000000007450E000-0x000000007450F000-memory.dmp

    Filesize

    4KB

  • memory/3152-9-0x0000000074500000-0x0000000074CB0000-memory.dmp

    Filesize

    7.7MB

  • memory/3152-8-0x000000007450E000-0x000000007450F000-memory.dmp

    Filesize

    4KB

  • memory/3152-7-0x0000000005BE0000-0x0000000005BF2000-memory.dmp

    Filesize

    72KB

  • memory/3152-6-0x0000000005BF0000-0x0000000005C8C000-memory.dmp

    Filesize

    624KB

  • memory/3152-4-0x0000000005A20000-0x0000000005A2A000-memory.dmp

    Filesize

    40KB

  • memory/3152-3-0x0000000005960000-0x00000000059F2000-memory.dmp

    Filesize

    584KB

  • memory/3152-36-0x0000000074500000-0x0000000074CB0000-memory.dmp

    Filesize

    7.7MB

  • memory/3152-2-0x0000000006000000-0x00000000065A4000-memory.dmp

    Filesize

    5.6MB

  • memory/3152-1-0x0000000000EB0000-0x0000000000F7A000-memory.dmp

    Filesize

    808KB

  • memory/3440-15-0x0000000002CA0000-0x0000000002CD6000-memory.dmp

    Filesize

    216KB

  • memory/3440-54-0x00000000078D0000-0x00000000078EA000-memory.dmp

    Filesize

    104KB

  • memory/3440-20-0x00000000054C0000-0x00000000054E2000-memory.dmp

    Filesize

    136KB

  • memory/3440-22-0x0000000005650000-0x00000000056B6000-memory.dmp

    Filesize

    408KB

  • memory/3440-38-0x00000000065A0000-0x00000000065BE000-memory.dmp

    Filesize

    120KB

  • memory/3440-39-0x00000000065F0000-0x000000000663C000-memory.dmp

    Filesize

    304KB

  • memory/3440-40-0x0000000006B70000-0x0000000006BA2000-memory.dmp

    Filesize

    200KB

  • memory/3440-41-0x0000000070A40000-0x0000000070A8C000-memory.dmp

    Filesize

    304KB

  • memory/3440-51-0x0000000007760000-0x000000000777E000-memory.dmp

    Filesize

    120KB

  • memory/3440-52-0x0000000007790000-0x0000000007833000-memory.dmp

    Filesize

    652KB

  • memory/3440-53-0x0000000007F10000-0x000000000858A000-memory.dmp

    Filesize

    6.5MB

  • memory/3440-32-0x0000000005FD0000-0x0000000006324000-memory.dmp

    Filesize

    3.3MB

  • memory/3440-55-0x0000000007940000-0x000000000794A000-memory.dmp

    Filesize

    40KB

  • memory/3440-56-0x0000000007B50000-0x0000000007BE6000-memory.dmp

    Filesize

    600KB

  • memory/3440-57-0x0000000007AD0000-0x0000000007AE1000-memory.dmp

    Filesize

    68KB

  • memory/3440-58-0x0000000007B00000-0x0000000007B0E000-memory.dmp

    Filesize

    56KB

  • memory/3440-59-0x0000000007B10000-0x0000000007B24000-memory.dmp

    Filesize

    80KB

  • memory/3440-60-0x0000000007C10000-0x0000000007C2A000-memory.dmp

    Filesize

    104KB

  • memory/3440-61-0x0000000007BF0000-0x0000000007BF8000-memory.dmp

    Filesize

    32KB

  • memory/3440-64-0x0000000074500000-0x0000000074CB0000-memory.dmp

    Filesize

    7.7MB

  • memory/3440-21-0x0000000005570000-0x00000000055D6000-memory.dmp

    Filesize

    408KB

  • memory/3440-18-0x0000000074500000-0x0000000074CB0000-memory.dmp

    Filesize

    7.7MB

  • memory/3440-17-0x00000000058A0000-0x0000000005EC8000-memory.dmp

    Filesize

    6.2MB

  • memory/3440-16-0x0000000074500000-0x0000000074CB0000-memory.dmp

    Filesize

    7.7MB