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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
    17/01/2025, 01:22

General

  • Target

    c27037d26569c3f6f8e9ef13a0a5c1dea881768744739c8f1b4c8c10fb2f30a3.exe

  • Size

    758KB

  • MD5

    c0badb30377bb7b29f79c59c73b663d6

  • SHA1

    ec45f650580b5904eb02163948a5372c96fe5dc7

  • SHA256

    c27037d26569c3f6f8e9ef13a0a5c1dea881768744739c8f1b4c8c10fb2f30a3

  • SHA512

    eed04791a3a726d617bfdfbfa7c67a44cb268258b4810c93d3c5b8497db56efe6ee56cb6db0a1e465f975e235463d078aea905e9ae0cd7877b0fde72e05e464e

  • SSDEEP

    6144:ZWusAIFB++velibxPyp/64wjOjn6cB3rZtT/Yq3v9Auky+4N1v9D21:Zz7IFjvelQypyfy7z6u7+4Dv9D21

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Boy12345#

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • 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.

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • Accesses Microsoft Outlook profiles 1 TTPs 2 IoCs
  • 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.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c27037d26569c3f6f8e9ef13a0a5c1dea881768744739c8f1b4c8c10fb2f30a3.exe
    "C:\Users\Admin\AppData\Local\Temp\c27037d26569c3f6f8e9ef13a0a5c1dea881768744739c8f1b4c8c10fb2f30a3.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3128
    • C:\Users\Admin\AppData\Roaming\app.exe
      "C:\Users\Admin\AppData\Roaming\app.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1944
      • C:\Users\Admin\AppData\Roaming\app.exe
        "C:\Users\Admin\AppData\Roaming\app.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4808
      • C:\Users\Admin\AppData\Roaming\My.RawFile.exe
        "C:\Users\Admin\AppData\Roaming\My.RawFile.exe"
        3⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • outlook_office_path
        • outlook_win_path
        PID:3912
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\aspnet_compiler.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\aspnet_compiler.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3248
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\aspnet_compiler.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\aspnet_compiler.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4516

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\aspnet_compiler.exe.log

    Filesize

    20B

    MD5

    b3ac9d09e3a47d5fd00c37e075a70ecb

    SHA1

    ad14e6d0e07b00bd10d77a06d68841b20675680b

    SHA256

    7a23c6e7ccd8811ecdf038d3a89d5c7d68ed37324bae2d4954125d9128fa9432

    SHA512

    09b609ee1061205aa45b3c954efc6c1a03c8fd6b3011ff88cf2c060e19b1d7fd51ee0cb9d02a39310125f3a66aa0146261bdee3d804f472034df711bc942e316

  • C:\Users\Admin\AppData\Roaming\My.RawFile.exe

    Filesize

    142KB

    MD5

    5a733ef0de5e31e2e4b4abb016c0f251

    SHA1

    28644040a6deac35c20fa931b5d003a97293363e

    SHA256

    a80c77ca694eca3f6629c54572aba811e64b61975c5db2ff38c8d662d12b1ce7

    SHA512

    9d09ac6b6a560643cac08345ab6ef8578011b11be7d4821d7aa1b3d76f2801d30cb4d206a4ff9335f0ece5cfa2ec8258754b2481102eac3da064e5005f7ffba9

  • C:\Users\Admin\AppData\Roaming\app.exe

    Filesize

    767KB

    MD5

    8cd9e11ad14f491f3510019e4580afc0

    SHA1

    4d785f8cea7d9ef4cbae44420df39f102848a351

    SHA256

    191aeb9f4aa1e800f2c5ef54deeb392d5a09a607c00ac8790758003913d42e6a

    SHA512

    dbbb2b0a1cc067a2be46e57daa1d5cf8e493e1b38b719dc8c2e25756bed80e028127509d066fde0d446d83d5d1f5c3ce6c4f6d1fcb1142ff166e9a93d09d303c

  • memory/1944-30-0x0000000075280000-0x0000000075831000-memory.dmp

    Filesize

    5.7MB

  • memory/1944-59-0x0000000075280000-0x0000000075831000-memory.dmp

    Filesize

    5.7MB

  • memory/1944-39-0x0000000075280000-0x0000000075831000-memory.dmp

    Filesize

    5.7MB

  • memory/1944-33-0x0000000075280000-0x0000000075831000-memory.dmp

    Filesize

    5.7MB

  • memory/1944-32-0x0000000075280000-0x0000000075831000-memory.dmp

    Filesize

    5.7MB

  • memory/1944-31-0x0000000075280000-0x0000000075831000-memory.dmp

    Filesize

    5.7MB

  • memory/3128-16-0x0000000075282000-0x0000000075283000-memory.dmp

    Filesize

    4KB

  • memory/3128-3-0x0000000075280000-0x0000000075831000-memory.dmp

    Filesize

    5.7MB

  • memory/3128-18-0x0000000075280000-0x0000000075831000-memory.dmp

    Filesize

    5.7MB

  • memory/3128-17-0x0000000075280000-0x0000000075831000-memory.dmp

    Filesize

    5.7MB

  • memory/3128-0-0x0000000075282000-0x0000000075283000-memory.dmp

    Filesize

    4KB

  • memory/3128-1-0x0000000075280000-0x0000000075831000-memory.dmp

    Filesize

    5.7MB

  • memory/3128-2-0x0000000075280000-0x0000000075831000-memory.dmp

    Filesize

    5.7MB

  • memory/3128-29-0x0000000075280000-0x0000000075831000-memory.dmp

    Filesize

    5.7MB

  • memory/3128-4-0x0000000075280000-0x0000000075831000-memory.dmp

    Filesize

    5.7MB

  • memory/3248-53-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/4808-37-0x0000000075280000-0x0000000075831000-memory.dmp

    Filesize

    5.7MB

  • memory/4808-36-0x0000000075280000-0x0000000075831000-memory.dmp

    Filesize

    5.7MB

  • memory/4808-35-0x0000000075280000-0x0000000075831000-memory.dmp

    Filesize

    5.7MB

  • memory/4808-60-0x0000000075280000-0x0000000075831000-memory.dmp

    Filesize

    5.7MB