Analysis

  • max time kernel
    150s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    02-08-2024 14:15

General

  • Target

    DEnigmaCrakerV2.exe

  • Size

    59.3MB

  • MD5

    62fadebebf4208af245829dcb4b159b6

  • SHA1

    476d3854d2eaead161e85624f33fbd5a507ac885

  • SHA256

    1ae1b2e13a00415f208ca5972b2b6ff5fead584bb3aca4294505e46f56cc5c6c

  • SHA512

    b25b8b1a179e7b81ad6bfc13349c0ca3056be55156d838cc0f24625920f0dba4e02f513b71308ab49981b59d9f9c385086e4393b9b12fc4f2b134d98a414fb7f

  • SSDEEP

    1572864:2sabzB6M352iHBA8PCwl5qewZJpLfEFZPvLHwHMxwX:2s6zB6yBR4eopyFHRE

Malware Config

Extracted

Family

nightingale

C2

https://api.telegram.org/bot6708185867:AAFutwCJHLGWBWo0L449U4iLunAo9h3rayQ/sendDocument

Signatures

  • Nightingale stealer

    Nightingale stealer is an information stealer written in C#.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • 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.

  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • Adds Run key to start application 2 TTPs 1 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.

  • Detects Pyinstaller 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

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

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

  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DEnigmaCrakerV2.exe
    "C:\Users\Admin\AppData\Local\Temp\DEnigmaCrakerV2.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2760
    • C:\Users\Admin\AppData\Local\Temp\sunshine-stealer.exe
      "C:\Users\Admin\AppData\Local\Temp\sunshine-stealer.exe"
      2⤵
      • Executes dropped EXE
      PID:2708
    • C:\Users\Admin\AppData\Local\Temp\tommyv2.exe
      "C:\Users\Admin\AppData\Local\Temp\tommyv2.exe"
      2⤵
      • Executes dropped EXE
      PID:2936
    • C:\Users\Admin\AppData\Local\Temp\Piruken_LetThereBeNightingale_obf.exe
      "C:\Users\Admin\AppData\Local\Temp\Piruken_LetThereBeNightingale_obf.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2796
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /k start /b powershell -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionPath C:\Users\Admin\AppData\Local\Temp\Piruken_LetThereBeNightingale_obf.exe & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2848
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionPath C:\Users\Admin\AppData\Local\Temp\Piruken_LetThereBeNightingale_obf.exe
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2880
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /k start /b powershell -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionExtension .exe & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2844
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionExtension .exe
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1748
    • C:\Users\Admin\AppData\Local\Temp\DEnigmaCraker.exe
      "C:\Users\Admin\AppData\Local\Temp\DEnigmaCraker.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2724
      • C:\Users\Admin\AppData\Local\Temp\DEnigmaCraker.exe
        "C:\Users\Admin\AppData\Local\Temp\DEnigmaCraker.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:1936
  • C:\Windows\system32\wbem\WmiApSrv.exe
    C:\Windows\system32\wbem\WmiApSrv.exe
    1⤵
      PID:448

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      11.8MB

      MD5

      94bfc145c2876aea5bec18cdceeca296

      SHA1

      e632e736aa6dc0d73282e1297600c5cea1205ec5

      SHA256

      4eb912fee24ac5cf2ecbe6ac2bec99907e3554c662a8521fa902814bf6465800

      SHA512

      0c03ed4b032ec962ae46ffaf91d2de507eea0642e1a0d7cf2a68d15c7b1e3663a63b5c77eb8784755f8da48a883baacd02742d61fc3e429897deb75ad3c4aa28

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

      Filesize

      180KB

      MD5

      105709672755810c6cbbe74a27792459

      SHA1

      3ea73f6390c53f9618ef4b2ed37a2b8e6542a6d0

      SHA256

      d9b9ede277690c91360c23e31dd15d088d2fd5f08eac18b7220b6d393f39eff0

      SHA512

      54114b363732d6a87ba41a38a932c5fb5d8960847cf1e341296c1eb1a4671a62e2e005a04a7334d9f8c277343fb9d97df3219036d4dc0120ffe501da9e80327c

    • C:\Users\Admin\AppData\Local\Temp\_MEI27242\python312.dll

      Filesize

      6.6MB

      MD5

      5c5602cda7ab8418420f223366fff5db

      SHA1

      52f81ee0aef9b6906f7751fd2bbd4953e3f3b798

      SHA256

      e7890e38256f04ee0b55ac5276bbf3ac61392c3a3ce150bb5497b709803e17ce

      SHA512

      51c3b4f29781bb52c137ddb356e1bc5a37f3a25f0ed7d89416b14ed994121f884cb3e40ccdbb211a8989e3bd137b8df8b28e232f98de8f35b03965cfce4b424f

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\M1FLDPZGLYMIUXAQ8MAA.temp

      Filesize

      7KB

      MD5

      ef15bae01eb4b0338e9d2f2092c2848f

      SHA1

      2dcf08eced8da611add5d9c9025a13b3e8663359

      SHA256

      dfa5feb18606fec08c16ce20a5711efce8e83c11654b688679dc7d447dc24fdd

      SHA512

      2d88e9c5639d275d87ccfe2317a801f9983d7cf27410e76b9f7a632c22a7c6ba6c72c59bc5037677e475a77b71e8e35fca16c8b1d2b798176c594134fb5094d5

    • \Users\Admin\AppData\Local\Temp\_MEI27242\api-ms-win-core-file-l1-2-0.dll

      Filesize

      21KB

      MD5

      bcb8b9f6606d4094270b6d9b2ed92139

      SHA1

      bd55e985db649eadcb444857beed397362a2ba7b

      SHA256

      fa18d63a117153e2ace5400ed89b0806e96f0627d9db935906be9294a3038118

      SHA512

      869b2b38fd528b033b3ec17a4144d818e42242b83d7be48e2e6da6992111758b302f48f52e0dd76becb526a90a2b040ce143c6d4f0e009a513017f06b9a8f2b9

    • \Users\Admin\AppData\Local\Temp\_MEI27242\api-ms-win-core-file-l2-1-0.dll

      Filesize

      18KB

      MD5

      bfffa7117fd9b1622c66d949bac3f1d7

      SHA1

      402b7b8f8dcfd321b1d12fc85a1ee5137a5569b2

      SHA256

      1ea267a2e6284f17dd548c6f2285e19f7edb15d6e737a55391140ce5cb95225e

      SHA512

      b319cc7b436b1be165cdf6ffcab8a87fe29de78f7e0b14c8f562be160481fb5483289bd5956fdc1d8660da7a3f86d8eede35c6cc2b7c3d4c852decf4b2dcdb7f

    • \Users\Admin\AppData\Local\Temp\_MEI27242\api-ms-win-core-localization-l1-2-0.dll

      Filesize

      21KB

      MD5

      20ddf543a1abe7aee845de1ec1d3aa8e

      SHA1

      0eaf5de57369e1db7f275a2fffd2d2c9e5af65bf

      SHA256

      d045a72c3e4d21165e9372f76b44ff116446c1e0c221d9cea3ab0a1134a310e8

      SHA512

      96dd48df315a7eea280ca3da0965a937a649ee77a82a1049e3d09b234439f7d927d7fb749073d7af1b23dadb643978b70dcdadc6c503fe850b512b0c9c1c78dd

    • \Users\Admin\AppData\Local\Temp\_MEI27242\api-ms-win-core-processthreads-l1-1-1.dll

      Filesize

      21KB

      MD5

      4380d56a3b83ca19ea269747c9b8302b

      SHA1

      0c4427f6f0f367d180d37fc10ecbe6534ef6469c

      SHA256

      a79c7f86462d8ab8a7b73a3f9e469514f57f9fe456326be3727352b092b6b14a

      SHA512

      1c29c335c55f5f896526c8ee0f7160211fd457c1f1b98915bcc141112f8a730e1a92391ab96688cbb7287e81e6814cc86e3b057e0a6129cbb02892108bfafaf4

    • \Users\Admin\AppData\Local\Temp\_MEI27242\api-ms-win-core-timezone-l1-1-0.dll

      Filesize

      21KB

      MD5

      2554060f26e548a089cab427990aacdf

      SHA1

      8cc7a44a16d6b0a6b7ed444e68990ff296d712fe

      SHA256

      5ab003e899270b04abc7f67be953eaccf980d5bbe80904c47f9aaf5d401bb044

      SHA512

      fd4d5a7fe4da77b0222b040dc38e53f48f7a3379f69e2199639b9f330b2e55939d89ce8361d2135182b607ad75e58ee8e34b90225143927b15dcc116b994c506

    • \Users\Admin\AppData\Local\Temp\_MEI27242\ucrtbase.dll

      Filesize

      992KB

      MD5

      0e0bac3d1dcc1833eae4e3e4cf83c4ef

      SHA1

      4189f4459c54e69c6d3155a82524bda7549a75a6

      SHA256

      8a91052ef261b5fbf3223ae9ce789af73dfe1e9b0ba5bdbc4d564870a24f2bae

      SHA512

      a45946e3971816f66dd7ea3788aacc384a9e95011500b458212dc104741315b85659e0d56a41570731d338bdf182141c093d3ced222c007038583ceb808e26fd

    • \Users\Admin\AppData\Local\Temp\sunshine-stealer.exe

      Filesize

      7.3MB

      MD5

      2e42b264532b45a1ecc0e3dc1f0a3926

      SHA1

      236841919a6061385c72a8a00d4c97abb5df1087

      SHA256

      832d472e854d5602410e09f30557fcaf4c84b9c785a583d7480fad76ace1fba5

      SHA512

      0f93e4b031e017a85e9b24c47c4cca2cda1bf15c4d5ecbc38e3d7841d9ee36cd7df023d507cbfec750bf21890279c1dd704ccd82bd72cffb854fd38b1781c576

    • \Users\Admin\AppData\Local\Temp\tommyv2.exe

      Filesize

      40.0MB

      MD5

      ee4c97a398196ca5b7a0b6cffe5ce836

      SHA1

      4a60cf7c4df1e10a2ba97240e73d88c9f8715cae

      SHA256

      bbb1be06910a5246475281d720d8afa5d26426281b7ab762cd039b701bfeb934

      SHA512

      c79d1933672debe75740ef8526201e660852fbc16a6b0fd5cf7e918fba0fdee749078ff223873eeea7c18eab71c0ef5303f7ce03e4bf8fb5b60c5f4fe6508578

    • memory/1748-120-0x00000000027E0000-0x00000000027E8000-memory.dmp

      Filesize

      32KB

    • memory/2708-121-0x000000013F5D0000-0x000000013FD28000-memory.dmp

      Filesize

      7.3MB

    • memory/2796-75-0x0000000000A30000-0x0000000000A64000-memory.dmp

      Filesize

      208KB

    • memory/2880-119-0x000000001B670000-0x000000001B952000-memory.dmp

      Filesize

      2.9MB

    • memory/2936-122-0x000000013F170000-0x0000000141980000-memory.dmp

      Filesize

      40.1MB