Analysis

  • max time kernel
    69s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    22-01-2025 06:57

General

  • Target

    Teklif 99373998749-7638378939.xlsx.exe

  • Size

    775KB

  • MD5

    f253e2c0361fb3ec2fba6a618c024313

  • SHA1

    ffc4e9e16344118eb083734ecb82bf72b23512e8

  • SHA256

    78d1ef46a428169130807621644d3aa5e5c7e214697f25a5b7839fb448b8a4b4

  • SHA512

    db220b586808b7e0af1307da72e946521b8f7740a98c65cf46c4fea56fc4714b619d2861c5c8b4ac96706a6a519774cd276959420b313545231111f21db09477

  • SSDEEP

    12288:uSLKWa+klX1LdS6s+imIloZdt7L23VRYTLWmKtiVBQzHfJ0KVdZe2zbOvlRE42qZ:LkllKV+dNLqVRYPWmB7QVfdDb+l+4JJ

Malware Config

Extracted

Family

vipkeylogger

C2

https://api.telegram.org/bot7784580930:AAGMCki8hBwu16UwwjATu3X8TvVLB-VhfaE/sendMessage?chat_id=5302361040

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.

  • 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).

  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Teklif 99373998749-7638378939.xlsx.exe
    "C:\Users\Admin\AppData\Local\Temp\Teklif 99373998749-7638378939.xlsx.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2652
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\xuAZqx.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2716
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xuAZqx" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9618.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2432
    • C:\Users\Admin\AppData\Local\Temp\Teklif 99373998749-7638378939.xlsx.exe
      "C:\Users\Admin\AppData\Local\Temp\Teklif 99373998749-7638378939.xlsx.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:2564

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp9618.tmp

    Filesize

    1KB

    MD5

    656967bb41a6572c5b7c326fd92593aa

    SHA1

    db204fbb99312c294362778f58fb802d882a597e

    SHA256

    b108735d32b1e033e734a2d3b045984aa4a6e9c03c6c11394d7450df032bb8ac

    SHA512

    8168316ecdeda96fad51a7e8ca67040fff581d2e70dc7a37752c6259e393c1e82de44a06baecff48fede4e1021ce83ab9b0428b6ec6cb806f80b2f2db160a8a2

  • memory/2564-24-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/2564-25-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/2564-18-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/2564-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2564-16-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/2564-23-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/2564-15-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/2564-20-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/2652-5-0x00000000746E0000-0x0000000074DCE000-memory.dmp

    Filesize

    6.9MB

  • memory/2652-1-0x0000000000880000-0x0000000000948000-memory.dmp

    Filesize

    800KB

  • memory/2652-2-0x00000000746E0000-0x0000000074DCE000-memory.dmp

    Filesize

    6.9MB

  • memory/2652-0-0x00000000746EE000-0x00000000746EF000-memory.dmp

    Filesize

    4KB

  • memory/2652-6-0x0000000000340000-0x00000000003CE000-memory.dmp

    Filesize

    568KB

  • memory/2652-4-0x00000000746EE000-0x00000000746EF000-memory.dmp

    Filesize

    4KB

  • memory/2652-3-0x00000000006D0000-0x00000000006EE000-memory.dmp

    Filesize

    120KB

  • memory/2652-26-0x00000000746E0000-0x0000000074DCE000-memory.dmp

    Filesize

    6.9MB