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Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    07/03/2024, 13:52

General

  • Target

    Respecialist.exe

  • Size

    826KB

  • MD5

    bcc1f12af6334f819cac261f50fc6f3f

  • SHA1

    68ef28761831b5ce423b174549f78843a8ffcbaa

  • SHA256

    cadc8838c26a906f9dd9cfed178546e322f67f714d4951169482d781a07ffc98

  • SHA512

    77512f726964cb995f830bfab6aa7fbec3b3a5b270b08d57d4a0395a570aa5c3b6b3185bce9bb6baf4ccafcd6260a2a514282ec45f65d6ab93dac7ac5cda4f4f

  • SSDEEP

    12288:zgOiqjFiNnytiTYG8ERU8Nsb9uF/5MkQ5HOKBAUhtHuuU69E:zgYFyy4c1EdsDOSAUbPR9E

Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 1 IoCs
  • Drops file in System32 directory 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Respecialist.exe
    "C:\Users\Admin\AppData\Local\Temp\Respecialist.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:1808
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1808 -s 28
      2⤵
      • Program crash
      PID:1680

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\nsy1660.tmp\Spahees99.lnk

    Filesize

    1KB

    MD5

    1741931ca1d5fdd5b1aacd8b29239790

    SHA1

    c89863beab16409dcfc8767975ded24aca9be269

    SHA256

    9fb991d6f1312aa15f8ff822accfc4c4cb7354b87ff46c62d830779230cc695a

    SHA512

    fb845c0102ed8566146150b501219222f50654a5a901ba045d3f1ebb33eb87ec00521307a3ba8e10bb330b31135a7d7636524a168b79dcdd9b625fb5b0d137b5

  • \Users\Admin\AppData\Local\Temp\nsy1660.tmp\System.dll

    Filesize

    12KB

    MD5

    0d7ad4f45dc6f5aa87f606d0331c6901

    SHA1

    48df0911f0484cbe2a8cdd5362140b63c41ee457

    SHA256

    3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

    SHA512

    c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

  • memory/1808-288-0x0000000077260000-0x0000000077409000-memory.dmp

    Filesize

    1.7MB

  • memory/1808-289-0x0000000077450000-0x0000000077526000-memory.dmp

    Filesize

    856KB