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Analysis

  • max time kernel
    150s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    08/01/2024, 12:06

General

  • Target

    4b642633a36a25817bd10003d5d4dea0.exe

  • Size

    100KB

  • MD5

    4b642633a36a25817bd10003d5d4dea0

  • SHA1

    66e64cc788ae62e354596207bf670be4a6882c49

  • SHA256

    db2224fd25fb45150d7033001ff2ea90da3fd56d8a3f1d99f1f3fab14705fe09

  • SHA512

    cc47e3e65fa5aca36a092af0f489574ec157fbae3f6fa06dbb4de4c0e794dc8ce2c4e6286d48d8b32c8b0d457b6ca8e22442e34ef79322a3aa960d30ca8fff94

  • SSDEEP

    3072:gi9cmKEV+l7/qlNPQ6Qpmj2dDqSGVk8jwaaHw7Koj4rDMN0:gicUWrqfPnumjkDqSk

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Ramnit

    Ramnit is a versatile family that holds viruses, worms, and Trojans.

  • UAC bypass 3 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 5 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Windows\SysWOW64\svchost.exe
    C:\Windows\system32\svchost.exe
    1⤵
    • Modifies WinLogon for persistence
    • UAC bypass
    • Checks BIOS information in registry
    • Drops startup file
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2732
  • C:\Windows\SysWOW64\svchost.exe
    C:\Windows\system32\svchost.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2252
  • C:\Users\Admin\AppData\Local\Temp\4b642633a36a25817bd10003d5d4dea0.exe
    "C:\Users\Admin\AppData\Local\Temp\4b642633a36a25817bd10003d5d4dea0.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2244
    • C:\Users\Admin\AppData\Local\Temp\ldetvnwufpyrmcgb.exe
      "C:\Users\Admin\AppData\Local\Temp\ldetvnwufpyrmcgb.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2536

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\lromjllx\txgytluo.exe

    Filesize

    100KB

    MD5

    4b642633a36a25817bd10003d5d4dea0

    SHA1

    66e64cc788ae62e354596207bf670be4a6882c49

    SHA256

    db2224fd25fb45150d7033001ff2ea90da3fd56d8a3f1d99f1f3fab14705fe09

    SHA512

    cc47e3e65fa5aca36a092af0f489574ec157fbae3f6fa06dbb4de4c0e794dc8ce2c4e6286d48d8b32c8b0d457b6ca8e22442e34ef79322a3aa960d30ca8fff94

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

    Filesize

    92KB

    MD5

    8073e92f00b42fc3de60f010e6b4ff0c

    SHA1

    0004d848bb7d725c2a68516f17943be0bfcfb02f

    SHA256

    77a435f9eac296f2e5164f5e76342dfa723ebef4958215259451b0f6811de751

    SHA512

    725d6544655d023bef493f2536443c54486c6ef1dacf47765dc43b76559d1cc599980d93293a4c699ed6f96ad514f8b1b610beae89574f6d5bc6e1fb81306c5e

  • memory/2244-71-0x0000000002720000-0x000000000275B000-memory.dmp

    Filesize

    236KB

  • memory/2244-63-0x0000000002720000-0x000000000275B000-memory.dmp

    Filesize

    236KB

  • memory/2244-73-0x0000000000400000-0x000000000043A608-memory.dmp

    Filesize

    233KB

  • memory/2244-53-0x0000000077090000-0x0000000077091000-memory.dmp

    Filesize

    4KB

  • memory/2244-8-0x0000000077090000-0x0000000077091000-memory.dmp

    Filesize

    4KB

  • memory/2244-0-0x0000000000400000-0x000000000043A608-memory.dmp

    Filesize

    233KB

  • memory/2244-61-0x0000000002720000-0x000000000275B000-memory.dmp

    Filesize

    236KB

  • memory/2244-1-0x0000000000400000-0x000000000043A608-memory.dmp

    Filesize

    233KB

  • memory/2244-2-0x0000000000400000-0x000000000043A608-memory.dmp

    Filesize

    233KB

  • memory/2244-5-0x0000000000270000-0x0000000000271000-memory.dmp

    Filesize

    4KB

  • memory/2244-4-0x0000000000260000-0x0000000000261000-memory.dmp

    Filesize

    4KB

  • memory/2244-6-0x0000000000250000-0x0000000000252000-memory.dmp

    Filesize

    8KB

  • memory/2244-7-0x000000007708F000-0x0000000077090000-memory.dmp

    Filesize

    4KB

  • memory/2252-21-0x0000000020010000-0x000000002001C000-memory.dmp

    Filesize

    48KB

  • memory/2252-12-0x0000000000050000-0x0000000000051000-memory.dmp

    Filesize

    4KB

  • memory/2252-16-0x0000000020010000-0x000000002001C000-memory.dmp

    Filesize

    48KB

  • memory/2252-20-0x0000000020010000-0x000000002001C000-memory.dmp

    Filesize

    48KB

  • memory/2252-28-0x0000000000060000-0x0000000000061000-memory.dmp

    Filesize

    4KB

  • memory/2252-22-0x0000000020010000-0x000000002001C000-memory.dmp

    Filesize

    48KB

  • memory/2252-25-0x0000000000070000-0x0000000000071000-memory.dmp

    Filesize

    4KB

  • memory/2252-26-0x0000000000050000-0x0000000000051000-memory.dmp

    Filesize

    4KB

  • memory/2252-10-0x0000000020010000-0x000000002001C000-memory.dmp

    Filesize

    48KB

  • memory/2536-75-0x0000000000400000-0x000000000043A608-memory.dmp

    Filesize

    233KB

  • memory/2536-77-0x0000000000400000-0x000000000043A608-memory.dmp

    Filesize

    233KB

  • memory/2536-80-0x0000000000400000-0x000000000043A608-memory.dmp

    Filesize

    233KB

  • memory/2536-78-0x0000000000260000-0x0000000000262000-memory.dmp

    Filesize

    8KB

  • memory/2732-45-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-81-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-44-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-35-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-29-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-90-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-89-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-88-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-87-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-86-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-84-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-51-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-82-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-91-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-92-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-93-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-94-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-95-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-96-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-97-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-98-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-99-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB

  • memory/2732-100-0x0000000020010000-0x000000002002C000-memory.dmp

    Filesize

    112KB