Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-01-2024 11:06

General

  • Target

    DOCU_957735271647895846_PDF.exe

  • Size

    618KB

  • MD5

    31730b69ca484889e8a5c1735857de26

  • SHA1

    132aa2c7565cb05760ff80752239aac47917097c

  • SHA256

    b8a5f88f60837143f18dd1494a7195ac283b91d068668d1d34b4994a8148641c

  • SHA512

    235af5322f3632cd42d3f38dfc7ddac6bd5e5e489b34f243f1ca7d4f56b672dfcb8a150f2fb48043b9fd11c8df92611bb336877d2d232a89523339708c2b252c

  • SSDEEP

    12288:MkKnLVq69Hrc82yTPZodHtRWztKK7RG1Jz8Ap2x9c8Q04fz/sGoisDsCVVLRpf/T:AQy6ONsqLRpf/O1/zijTrT

Malware Config

Signatures

  • Azorult

    An information stealer that was first discovered in 2016, targeting browsing history and passwords.

  • Checks computer location settings 2 TTPs 1 IoCs

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

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

    Tries to access configuration files associated with programs like FileZilla.

  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • 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 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DOCU_957735271647895846_PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\DOCU_957735271647895846_PDF.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1004
    • C:\Users\Admin\AppData\Local\Temp\DOCU_957735271647895846_PDF.exe
      "C:\Users\Admin\AppData\Local\Temp\DOCU_957735271647895846_PDF.exe"
      2⤵
      • Checks computer location settings
      • Loads dropped DLL
      • Accesses Microsoft Outlook profiles
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:4232
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c C:\Windows\system32\timeout.exe 3 & del "DOCU_957735271647895846_PDF.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2220
        • C:\Windows\SysWOW64\timeout.exe
          C:\Windows\system32\timeout.exe 3
          4⤵
          • Delays execution with timeout.exe
          PID:3156

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\350B12AF\mozglue.dll

    Filesize

    135KB

    MD5

    9e682f1eb98a9d41468fc3e50f907635

    SHA1

    85e0ceca36f657ddf6547aa0744f0855a27527ee

    SHA256

    830533bb569594ec2f7c07896b90225006b90a9af108f49d6fb6bebd02428b2d

    SHA512

    230230722d61ac1089fabf3f2decfa04f9296498f8e2a2a49b1527797dca67b5a11ab8656f04087acadf873fa8976400d57c77c404eba4aff89d92b9986f32ed

  • C:\Users\Admin\AppData\Local\Temp\350B12AF\msvcp140.dll

    Filesize

    429KB

    MD5

    109f0f02fd37c84bfc7508d4227d7ed5

    SHA1

    ef7420141bb15ac334d3964082361a460bfdb975

    SHA256

    334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4

    SHA512

    46eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39

  • C:\Users\Admin\AppData\Local\Temp\350B12AF\nss3.dll

    Filesize

    1.1MB

    MD5

    0ed15ffd010c5c8e4508ecc0cf2dbbec

    SHA1

    02c5b5e7aff0028399b81d5988e279cdac739a35

    SHA256

    582724dd78cf33ff9fead74a85e80788ec9f99dc23367e099b933f5ad4509a17

    SHA512

    ae68aeff2d4c17cbd59e9e9fc5f4313f024c87eab89c1670bcb85480d4ab1afb5d93dc66cb8fd3519468157a73620e95a64fd15ff90ce056b453100cba79a162

  • C:\Users\Admin\AppData\Local\Temp\350B12AF\vcruntime140.dll

    Filesize

    81KB

    MD5

    7587bf9cb4147022cd5681b015183046

    SHA1

    f2106306a8f6f0da5afb7fc765cfa0757ad5a628

    SHA256

    c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d

    SHA512

    0b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f

  • C:\Users\Admin\AppData\Local\Temp\nsc662D.tmp\System.dll

    Filesize

    11KB

    MD5

    17ed1c86bd67e78ade4712be48a7d2bd

    SHA1

    1cc9fe86d6d6030b4dae45ecddce5907991c01a0

    SHA256

    bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

    SHA512

    0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

  • memory/1004-8-0x0000000077231000-0x0000000077351000-memory.dmp

    Filesize

    1.1MB

  • memory/1004-9-0x0000000010000000-0x0000000010006000-memory.dmp

    Filesize

    24KB

  • memory/4232-10-0x00000000772B8000-0x00000000772B9000-memory.dmp

    Filesize

    4KB

  • memory/4232-19-0x0000000000060000-0x0000000000087000-memory.dmp

    Filesize

    156KB

  • memory/4232-18-0x00000000004E0000-0x0000000001734000-memory.dmp

    Filesize

    18.3MB

  • memory/4232-11-0x00000000772D5000-0x00000000772D6000-memory.dmp

    Filesize

    4KB

  • memory/4232-79-0x00000000004E0000-0x0000000001734000-memory.dmp

    Filesize

    18.3MB

  • memory/4232-128-0x00000000004E0000-0x0000000001734000-memory.dmp

    Filesize

    18.3MB

  • memory/4232-129-0x0000000077231000-0x0000000077351000-memory.dmp

    Filesize

    1.1MB