Analysis

  • max time kernel
    91s
  • max time network
    95s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    08/05/2024, 07:51

General

  • Target
    06ec46f6d1f609aeafb8e8f5be8d12f8874902661394ce04094249558237c29d.exe
  • Size 502KB
  • Sample240508-jp4bcacg48
  • SHA256 06ec46f6d1f609aeafb8e8f5be8d12f8874902661394ce04094249558237c29d
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 2 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\06ec46f6d1f609aeafb8e8f5be8d12f8874902661394ce04094249558237c29d.exe
    "C:\Users\Admin\AppData\Local\Temp\06ec46f6d1f609aeafb8e8f5be8d12f8874902661394ce04094249558237c29d.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:548
    • C:\Users\Admin\AppData\Local\Temp\06ec46f6d1f609aeafb8e8f5be8d12f8874902661394ce04094249558237c29d.exe
      "C:\Users\Admin\AppData\Local\Temp\06ec46f6d1f609aeafb8e8f5be8d12f8874902661394ce04094249558237c29d.exe"
      2⤵
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      PID:3036
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3036 -s 1260
        3⤵
        • Program crash
        PID:744
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3036 -ip 3036
    1⤵
      PID:3024

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          System.dll

          • Path C:\Users\Admin\AppData\Local\Temp\nsi350C.tmp\System.dll
          • Size 11KB
          • SHA256 44e5dfd551b38e886214bd6b9c8ee913c4c4d1f085a6575d97c3e892b925da82
          • MD5 SHA1 SHA512 SSDEEP

          nsi350D.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsi350D.tmp
          • Size 4B
          • SHA256 65e2d70166c9a802b7ad2a87129b8945f083e5f268878790a9d1f1c03f47938d
          • MD5 SHA1 SHA512

          nsi350D.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsi350D.tmp
          • Size 6B
          • SHA256 6923dd1bc0460082c5d55a831908c24a282860b7f1cd6c2b79cf1bc8857c639c
          • MD5 SHA1 SHA512

          nsi350D.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsi350D.tmp
          • Size 16B
          • SHA256 0d4b1effa5ab30d5f6d9e6b1bd6de429d4a25075dbdf2f28d67beab72f6bff0e
          • MD5 SHA1 SHA512

          nsi350D.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsi350D.tmp
          • Size 30B
          • SHA256 35dad955ee2ccfe66eb80d670721acf7f83915f1204f07d449aace9c9ca1f2e3
          • MD5 SHA1 SHA512

          nsi350D.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsi350D.tmp
          • Size 32B
          • SHA256 05ec837bf0f57ead1b3fae5bec24f103831be6946eda1fe4cec3700ae019b117
          • MD5 SHA1 SHA512

          nsi350D.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsi350D.tmp
          • Size 49B
          • SHA256 bbd283b5a658ac95e8811c820de41f911e7559e982d9378b5b14c3f7cb5ccb6d
          • MD5 SHA1 SHA512

          nsi350D.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsi350D.tmp
          • Size 52B
          • SHA256 a9493973dd293917f3ebb932ab255f8cac40121707548de100d5969956bb1266
          • MD5 SHA1 SHA512

          nsi355C.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsi355C.tmp
          • Size 5B
          • SHA256 ff91566d755f5d038ae698a2cc0a7d4d14e5273afafc37b6f03afda163768fa0
          • MD5 SHA1 SHA512

          nsi355C.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsi355C.tmp
          • Size 21B
          • SHA256 4b53da02410254217ce2ca226b04cac355f795702acacee4695092b5c58af01a
          • MD5 SHA1 SHA512

          nsi355C.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsi355C.tmp
          • Size 31B
          • SHA256 7f1dcb40c2ba2502f92bfced8f28867e02c7b5e3d67ce4656aa4d9021cadf0d0
          • MD5 SHA1 SHA512

          nsi355C.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsi355C.tmp
          • Size 37B
          • SHA256 e3748ae9aadef1f6c6239b086a08f996d86a90efbde4f11a6163d62adc614f4e
          • MD5 SHA1 SHA512

          nsi355C.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsi355C.tmp
          • Size 42B
          • SHA256 1f2b5dae96dd8d304b9e15b18cfa97b739eae048ecf0e81c7b4d7e0a4cf6359b
          • MD5 SHA1 SHA512

          nsi355C.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsi355C.tmp
          • Size 52B
          • SHA256 f01a1f7e7070628cbcaf52c19129cb39351ac8b989eefbda74c3e9a293938b94
          • MD5 SHA1 SHA512

          nsi355C.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsi355C.tmp
          • Size 60B
          • SHA256 58441afb24ac1fe610a47e89d0848865842be2383ab88c06d31fd70eec7ce470
          • MD5 SHA1 SHA512

          nsi35AB.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsi35AB.tmp
          • Size 8B
          • SHA256 1c329924865741e0222d3ead23072cfbed14f96e2b0432573068eb0640513101
          • MD5 SHA1 SHA512

          nsi35AB.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsi35AB.tmp
          • Size 9B
          • SHA256 ae789a65914ed002efb82dad89e5a4d4b9ec8e7faae30d0ed6e3c0d20f7d3858
          • MD5 SHA1 SHA512

          nsi35AB.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsi35AB.tmp
          • Size 13B
          • SHA256 876382fdc2cd8ab89660417f26cb97feb9b8c51bd0ab916e33c280a90195b4f0
          • MD5 SHA1 SHA512

          nsi35AB.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsi35AB.tmp
          • Size 29B
          • SHA256 603018413ce2875406e3ef08d7ba9a2f086539f1d1ed1023efea06b635c426fc
          • MD5 SHA1 SHA512

          nsi35AB.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsi35AB.tmp
          • Size 37B
          • SHA256 fe6e17013fe0bfb7deb7c65ac1621085b2f3cfd90dcac3a007a17c5002710cee
          • MD5 SHA1 SHA512

          nsi35AB.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsi35AB.tmp
          • Size 51B
          • SHA256 ccf5958d8e15754297135f466bdb0b445d61869c4a243f7b6aa3516034082a4b
          • MD5 SHA1 SHA512

          nsi35AB.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsi35AB.tmp
          • Size 54B
          • SHA256 8725b206a89c5e92017a6e77b3c13dffbb0d7e350f4c2e15c0731de60e212cd9
          • MD5 SHA1 SHA512

          nss34AD.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nss34AD.tmp
          • Size 65B
          • SHA256 2bad3065546719b1e5ff58cb7ca6231b6cb669fb1fd06fb30102e9df00d63e60
          • MD5 SHA1 SHA512

          nss34AD.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nss34AD.tmp
          • Size 28B
          • SHA256 bb92b5197bb4677950b78f816a8170797d0392af55e31d0f0744fe9c99f7e9b8
          • MD5 SHA1 SHA512

          nss34AD.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nss34AD.tmp
          • Size 42B
          • SHA256 d0e907cfed7dd830efd34ab698cfbc7726f29b52b71479f6ee9cc34087925d26
          • MD5 SHA1 SHA512

          nsy360A.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsy360A.tmp
          • Size 4B
          • SHA256 04f8996da763b7a969b1028ee3007569eaf3a635486ddab211d512c85b9df8fb
          • MD5 SHA1 SHA512

          nsy360A.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsy360A.tmp
          • Size 11B
          • SHA256 cb9399842dd29519b6a475e7496610bf77edb3c59b56b4a708f0304632c909a8
          • MD5 SHA1 SHA512

          nsy360A.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsy360A.tmp
          • Size 30B
          • SHA256 c87f2ff45bb530577fb8856df1760edaf1060ae4ee2934b17fdd21b7d116f043
          • MD5 SHA1 SHA512

          memory/548-572-0x00000000048D0000-0x0000000005C4A000-memory.dmp

          memory/548-573-0x00007FF8FF321000-0x00007FF8FF44A000-memory.dmp

          memory/548-574-0x00007FF8FF320000-0x00007FF8FF529000-memory.dmp

          memory/548-577-0x00000000048D0000-0x0000000005C4A000-memory.dmp

          memory/548-579-0x00000000048D0000-0x0000000005C4A000-memory.dmp

          memory/3036-576-0x00007FF8FF320000-0x00007FF8FF529000-memory.dmp

          memory/3036-575-0x0000000000400000-0x0000000001717000-memory.dmp

          memory/3036-578-0x0000000000400000-0x0000000001717000-memory.dmp

          memory/3036-580-0x00007FF8FF320000-0x00007FF8FF529000-memory.dmp

          memory/3036-581-0x0000000000400000-0x0000000001717000-memory.dmp

          memory/3036-582-0x0000000000400000-0x0000000001717000-memory.dmp