Analysis

  • max time kernel
    157s
  • max time network
    181s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-12-2023 01:11

General

  • Target

    1f8413b28bb7ec298923ca139d633fc6.exe

  • Size

    125KB

  • MD5

    1f8413b28bb7ec298923ca139d633fc6

  • SHA1

    99614e9320312cf0b6039bf3f9c4feda8a1194c1

  • SHA256

    002508a4cec942c5b80483a46cabb6845ec961abb67e3b9eaface89996aa5457

  • SHA512

    3d6b75b4fe45ffcdc634734590b5832dab71e577926570b4c84fc2dff21cfb1c4733c746e3a33379e3f37c9dc9f58a217371a257afde22ab25705d877cc2dc54

  • SSDEEP

    3072:Y6lXWN336MdMfLirVQW0/nyyplK7/QoRawi10afCtBGRJFabWWT:JXgqqULirVT01w/QN1pCUJF85

Malware Config

Signatures

  • Ramnit

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • UPX packed file 10 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 52 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1f8413b28bb7ec298923ca139d633fc6.exe
    "C:\Users\Admin\AppData\Local\Temp\1f8413b28bb7ec298923ca139d633fc6.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4896
    • C:\Users\Admin\AppData\Local\Temp\1f8413b28bb7ec298923ca139d633fc6mgr.exe
      C:\Users\Admin\AppData\Local\Temp\1f8413b28bb7ec298923ca139d633fc6mgr.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:948
      • C:\Program Files (x86)\Microsoft\WaterMark.exe
        "C:\Program Files (x86)\Microsoft\WaterMark.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of UnmapMainImage
        • Suspicious use of WriteProcessMemory
        PID:3172
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3720
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3720 CREDAT:17410 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:320
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3620
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3620 CREDAT:17410 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:4016
    • C:\Program Files (x86)\Windows Media Player\setup_wm.exe
      "C:\Program Files (x86)\Windows Media Player\setup_wm.exe" /RunOnce:"C:\Users\Admin\AppData\Local\Temp\1f8413b28bb7ec298923ca139d633fc6.exe"
      2⤵
        PID:2928
    • C:\Windows\SysWOW64\svchost.exe
      C:\Windows\system32\svchost.exe
      1⤵
        PID:2500
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2500 -s 204
          2⤵
          • Program crash
          PID:1852
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2500 -ip 2500
        1⤵
          PID:1484

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Program Files (x86)\Microsoft\WaterMark.exe

          Filesize

          54KB

          MD5

          0d76f7912f91e6367fec8181f7e996c3

          SHA1

          75e0cf5d2abd087a2f45569e41ab7b872b120abe

          SHA256

          add8c69f4b7ecf532f19180cabd87fe5e60952e64d102e2e7a6d23e7ec796e89

          SHA512

          06d351505374665cebafad92cd85c6427f2ba8a6c42b6548d013e2e850c34e89eb25752044155b7713534c658c6b14c4edcd8f566c8eb17a760e999c8f168282

        • C:\Program Files (x86)\Microsoft\WaterMark.exe

          Filesize

          60KB

          MD5

          94f2f6ffbba8e7644668b51b39983916

          SHA1

          63357bbdf90101969117983dbc0d4ed0e713c4d7

          SHA256

          ede7603855cb37082c241c720a6650988c684eb3bcb263e5dd7b457458940fed

          SHA512

          d04430ceac70c6fa71d07d9ee82ac2bb5e6c0641d5c9e7e5a3ed39d342e8b198f367676516a55f0653e0b88635a027b9ad220e223145b8be8df281bb6faf7156

        • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{48BE3E25-A30C-11EE-B7F4-CAE9171F1CAB}.dat

          Filesize

          3KB

          MD5

          7251cf22c11fd43d42549e8ce904dd2d

          SHA1

          ca5f70af87a710bf783b176dec35e5a4890c2360

          SHA256

          86cebee62225d7bb1aedf6c0790a875c0952005035385347d185e89dd9be282e

          SHA512

          09d72d4fdb536f6d0c921bdede015eaad2d2d468a9dddb5726081f196a6d4ddf33f6f7f8b24a2831cb67798aaa80287b51f21d9567811846e2f197a76dcac780

        • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{48BE6535-A30C-11EE-B7F4-CAE9171F1CAB}.dat

          Filesize

          5KB

          MD5

          aa7ff9fc900070dae7855a6669c71a09

          SHA1

          b1ec337e5a00a5a5d89825f167a3f9a994036f86

          SHA256

          6408353876e85b475326ed8ebab2be2f07df979eb16814bd857e139551c19c40

          SHA512

          69d876052f380a85415ece6caf451e31d1553cf30caca8883933efd0adbcbdd1ff7f591fb36194b0135e16aff0a475b01dc7385dd676ed9fb56a2c233124fea4

        • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\verB011.tmp

          Filesize

          15KB

          MD5

          1a545d0052b581fbb2ab4c52133846bc

          SHA1

          62f3266a9b9925cd6d98658b92adec673cbe3dd3

          SHA256

          557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

          SHA512

          bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\43O0UZKG\suggestions[1].en-US

          Filesize

          17KB

          MD5

          5a34cb996293fde2cb7a4ac89587393a

          SHA1

          3c96c993500690d1a77873cd62bc639b3a10653f

          SHA256

          c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

          SHA512

          e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

        • C:\Users\Admin\AppData\Local\Temp\1f8413b28bb7ec298923ca139d633fc6mgr.exe

          Filesize

          1KB

          MD5

          6ea5c62a6044837804ef8d8bfddc0963

          SHA1

          5fa431b899d8e557576887476e9fbe9f29946e95

          SHA256

          4da4e6e2d93b4b9d9f7a50e7783de03a03d8a032f02becea43125c38b23bbdc5

          SHA512

          9f79b1f5cc4c70e318d2aba5b2b79dc4cb039357e4db9bb6d6ee5b10dde6b65eb62cbf21cf2b8293eec9deea649af089e74207a5a0a02af938734442437810e6

        • C:\Users\Admin\AppData\Local\Temp\1f8413b28bb7ec298923ca139d633fc6mgr.exe

          Filesize

          19KB

          MD5

          333a7abed4993322ea6db5fd89059779

          SHA1

          289832f10c57bc4321cd4688b49f27c202458e8d

          SHA256

          c87c147e65b09522515262bda5a83230f20cb1ad7125bb9d531b45ef114bb8bf

          SHA512

          e6840edacd2c182161a0c5af61fb5be85cc8cd5fd0ff8ab5cb6a94710fb8303d5fe749666f3ed3d8e7add6f382910ac29dc6aa12f9981124f7b41b19ea9d982a

        • memory/948-6-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/948-16-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/948-10-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/948-12-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/948-13-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/948-11-0x0000000002C50000-0x0000000002C51000-memory.dmp

          Filesize

          4KB

        • memory/948-9-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/948-7-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/2500-33-0x0000000000BA0000-0x0000000000BA1000-memory.dmp

          Filesize

          4KB

        • memory/2500-34-0x0000000000B80000-0x0000000000B81000-memory.dmp

          Filesize

          4KB

        • memory/3172-30-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3172-36-0x0000000000070000-0x0000000000071000-memory.dmp

          Filesize

          4KB

        • memory/3172-35-0x0000000077092000-0x0000000077093000-memory.dmp

          Filesize

          4KB

        • memory/3172-37-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3172-40-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/3172-31-0x0000000077092000-0x0000000077093000-memory.dmp

          Filesize

          4KB

        • memory/3172-29-0x0000000000060000-0x0000000000061000-memory.dmp

          Filesize

          4KB

        • memory/4896-26-0x0000000000780000-0x00000000007A3000-memory.dmp

          Filesize

          140KB

        • memory/4896-0-0x0000000000780000-0x00000000007A3000-memory.dmp

          Filesize

          140KB