Analysis

  • max time kernel
    151s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 05:36

General

  • Target

    c5fb0780d04345cf24bcb21baf3e833c9b1591d17989918d520b130e871bc0bc.exe

  • Size

    255KB

  • MD5

    91cce18dd72b826d31a9bba6519aec8c

  • SHA1

    7c5915088642e7637c74a54453b32619201b8304

  • SHA256

    c5fb0780d04345cf24bcb21baf3e833c9b1591d17989918d520b130e871bc0bc

  • SHA512

    956f01171358d45a48f2e55d05e0ace3b9a885010a67c566045f017c5c1b2ca82904e9b5293c738b98532a11b79e98dd29ad32dd79fc18636896a67e2a027c86

  • SSDEEP

    3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJH:1xlZam+akqx6YQJXcNlEHUIQeE3mmBIc

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 5 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Executes dropped EXE 6 IoCs
  • UPX packed file 34 IoCs

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

  • Loads dropped DLL 6 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Windows security modification 2 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Enumerates connected drives 3 TTPs 64 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Modifies WinLogon 2 TTPs 2 IoCs
  • AutoIT Executable 15 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Program Files directory 14 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of FindShellTrayWindow 21 IoCs
  • Suspicious use of SendNotifyMessage 21 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c5fb0780d04345cf24bcb21baf3e833c9b1591d17989918d520b130e871bc0bc.exe
    "C:\Users\Admin\AppData\Local\Temp\c5fb0780d04345cf24bcb21baf3e833c9b1591d17989918d520b130e871bc0bc.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1488
    • C:\Windows\SysWOW64\tiitdjkrxp.exe
      tiitdjkrxp.exe
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Modifies visiblity of hidden/system files in Explorer
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Loads dropped DLL
      • Windows security modification
      • Enumerates connected drives
      • Modifies WinLogon
      • Drops file in System32 directory
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:928
      • C:\Windows\SysWOW64\kprxvbvv.exe
        C:\Windows\system32\kprxvbvv.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:428
    • C:\Windows\SysWOW64\xoctphfzyanxbbo.exe
      xoctphfzyanxbbo.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:1552
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c fbbvgfhznanjl.exe
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1604
        • C:\Windows\SysWOW64\fbbvgfhznanjl.exe
          fbbvgfhznanjl.exe
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          PID:912
    • C:\Windows\SysWOW64\kprxvbvv.exe
      kprxvbvv.exe
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1556
    • C:\Windows\SysWOW64\fbbvgfhznanjl.exe
      fbbvgfhznanjl.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1412
    • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
      "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Windows\mydoc.rtf"
      2⤵
      • Drops file in Windows directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1840
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:1796

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Hidden Files and Directories

    2
    T1158

    Registry Run Keys / Startup Folder

    1
    T1060

    Winlogon Helper DLL

    1
    T1004

    Defense Evasion

    Hidden Files and Directories

    2
    T1158

    Modify Registry

    7
    T1112

    Disabling Security Tools

    2
    T1089

    Credential Access

    Credentials in Files

    1
    T1081

    Discovery

    Query Registry

    1
    T1012

    Peripheral Device Discovery

    1
    T1120

    System Information Discovery

    2
    T1082

    Collection

    Data from Local System

    1
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Program Files (x86)\Microsoft Office\Office14\1033\PROTTPLN.DOC.exe
      Filesize

      255KB

      MD5

      942fba706d674887434f3c55538157a6

      SHA1

      4487c548dc123a2e35fa9f8939b32f6ef7c79c0d

      SHA256

      40ea24e4044f85324594b4a06e69210b137c746baa0106c670416601cea9a75e

      SHA512

      55d278ab6e930c0834312368cd95ea990e438b2886dedcd81b58f0401a2bc0110d5f75c34f4e2791a82265736e06484797d8773ed762e6a57eb5882cb4b969af

    • C:\Program Files (x86)\Microsoft Office\Office14\1033\PROTTPLV.DOC.exe
      Filesize

      255KB

      MD5

      6e1d4b0033002473403cba77d46d859a

      SHA1

      79bf2610b19fb582ab26763e374adec501d4437a

      SHA256

      8bfdae10eeca014026e59ae0342b14b0d5f69e6d325ccba01fb1aa3d29d2980c

      SHA512

      6614e0a4e95b2a583f6d552ef68e7c7e3884ceea2cb1f15817367689381fa982e4505a50547aa6b8e0f5495f690fe6ed3002b6f1d81358dc3462b218d7b7dc38

    • C:\Users\Admin\Music\CompareCheckpoint.doc.exe
      Filesize

      255KB

      MD5

      5aab303350fccfe8202ccaedb696a636

      SHA1

      44191c8b2ad689bb07fd95404140a94f11e8e9d4

      SHA256

      57791c639ac679985856f52cf8371546f7f052343010db5c81d578ff9ba487b7

      SHA512

      5936822e55bf5fc1723d360b39cb1c192857c8e4e6f6bcc415f5a9f7a534e5b4fc73c4157eb6a58586be3ef6ad904f9251e236aad2fcf8676c718d13f9390d8d

    • C:\Windows\SysWOW64\fbbvgfhznanjl.exe
      Filesize

      255KB

      MD5

      7daa0c77312bde13152a311342f2a7c9

      SHA1

      412217c7f7a1bc72ef563924203d712f6e87408f

      SHA256

      27ac74df7c4637632c8d49b3219099c0a2dc5397b0a0298908f5ab7dccbe4076

      SHA512

      a5dd3c5e7c91101c9d9605ab343d9c361e9d577103695f398d00f0f38d24188d602332355cb009c7774892ba9c1ca74576308d46bffc1eb18113e6fb1c2f94cb

    • C:\Windows\SysWOW64\fbbvgfhznanjl.exe
      Filesize

      255KB

      MD5

      7daa0c77312bde13152a311342f2a7c9

      SHA1

      412217c7f7a1bc72ef563924203d712f6e87408f

      SHA256

      27ac74df7c4637632c8d49b3219099c0a2dc5397b0a0298908f5ab7dccbe4076

      SHA512

      a5dd3c5e7c91101c9d9605ab343d9c361e9d577103695f398d00f0f38d24188d602332355cb009c7774892ba9c1ca74576308d46bffc1eb18113e6fb1c2f94cb

    • C:\Windows\SysWOW64\fbbvgfhznanjl.exe
      Filesize

      255KB

      MD5

      7daa0c77312bde13152a311342f2a7c9

      SHA1

      412217c7f7a1bc72ef563924203d712f6e87408f

      SHA256

      27ac74df7c4637632c8d49b3219099c0a2dc5397b0a0298908f5ab7dccbe4076

      SHA512

      a5dd3c5e7c91101c9d9605ab343d9c361e9d577103695f398d00f0f38d24188d602332355cb009c7774892ba9c1ca74576308d46bffc1eb18113e6fb1c2f94cb

    • C:\Windows\SysWOW64\kprxvbvv.exe
      Filesize

      255KB

      MD5

      3cbe1c68a6d26f01e74895787f38ade5

      SHA1

      c3676cf2f8e77c5bd996f4800b8388d0d0abecd3

      SHA256

      c37d6982d51e8ebb62a5d1c14ecf9427b99085ca7aaf0e2febe5c338a9b89e64

      SHA512

      2ef0bed2563383ecf09f8753acdb4b03f2e95a49422b00a29d4307d72de1dda4ca5ecc06f64682eb64c7ee7ef91fcf5306be70862454b1133f4009a202f7eaca

    • C:\Windows\SysWOW64\kprxvbvv.exe
      Filesize

      255KB

      MD5

      3cbe1c68a6d26f01e74895787f38ade5

      SHA1

      c3676cf2f8e77c5bd996f4800b8388d0d0abecd3

      SHA256

      c37d6982d51e8ebb62a5d1c14ecf9427b99085ca7aaf0e2febe5c338a9b89e64

      SHA512

      2ef0bed2563383ecf09f8753acdb4b03f2e95a49422b00a29d4307d72de1dda4ca5ecc06f64682eb64c7ee7ef91fcf5306be70862454b1133f4009a202f7eaca

    • C:\Windows\SysWOW64\kprxvbvv.exe
      Filesize

      255KB

      MD5

      3cbe1c68a6d26f01e74895787f38ade5

      SHA1

      c3676cf2f8e77c5bd996f4800b8388d0d0abecd3

      SHA256

      c37d6982d51e8ebb62a5d1c14ecf9427b99085ca7aaf0e2febe5c338a9b89e64

      SHA512

      2ef0bed2563383ecf09f8753acdb4b03f2e95a49422b00a29d4307d72de1dda4ca5ecc06f64682eb64c7ee7ef91fcf5306be70862454b1133f4009a202f7eaca

    • C:\Windows\SysWOW64\tiitdjkrxp.exe
      Filesize

      255KB

      MD5

      8b698e3c959e4a5b4d90995dd674a17e

      SHA1

      f9850e00da47c33badabc64949291d0b7dcba0b9

      SHA256

      2162463a889de3636b0e4054be21ad62d1609139ba338cc319c37890b28ea082

      SHA512

      66d654252c454c91542d57cb486c88d3b176b7dc91f8356ecf351c91781a457f31e129d3772f9f203892ef4cc2511c7b50a95c2eab11e0f41a244dc38944c2c8

    • C:\Windows\SysWOW64\tiitdjkrxp.exe
      Filesize

      255KB

      MD5

      8b698e3c959e4a5b4d90995dd674a17e

      SHA1

      f9850e00da47c33badabc64949291d0b7dcba0b9

      SHA256

      2162463a889de3636b0e4054be21ad62d1609139ba338cc319c37890b28ea082

      SHA512

      66d654252c454c91542d57cb486c88d3b176b7dc91f8356ecf351c91781a457f31e129d3772f9f203892ef4cc2511c7b50a95c2eab11e0f41a244dc38944c2c8

    • C:\Windows\SysWOW64\xoctphfzyanxbbo.exe
      Filesize

      255KB

      MD5

      c87ab1577361b359124175076938bb2b

      SHA1

      513d55f8d7974f3c7e25064dc2ae5544175bce05

      SHA256

      4950389bfd381fd312d436562f22d72068930f18c96ede3d05b6799282d9a67a

      SHA512

      8f8b57875af6cb4412e2f0c4a82a2ea694bd9b3634c5e6f7e855b284e08f3518a6538811c92ee928c0e7d85c268fe50ac3b4ef7c5b67d207ac8753a63face2ed

    • C:\Windows\SysWOW64\xoctphfzyanxbbo.exe
      Filesize

      255KB

      MD5

      c87ab1577361b359124175076938bb2b

      SHA1

      513d55f8d7974f3c7e25064dc2ae5544175bce05

      SHA256

      4950389bfd381fd312d436562f22d72068930f18c96ede3d05b6799282d9a67a

      SHA512

      8f8b57875af6cb4412e2f0c4a82a2ea694bd9b3634c5e6f7e855b284e08f3518a6538811c92ee928c0e7d85c268fe50ac3b4ef7c5b67d207ac8753a63face2ed

    • C:\Windows\mydoc.rtf
      Filesize

      223B

      MD5

      06604e5941c126e2e7be02c5cd9f62ec

      SHA1

      4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

      SHA256

      85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

      SHA512

      803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

    • \Windows\SysWOW64\fbbvgfhznanjl.exe
      Filesize

      255KB

      MD5

      7daa0c77312bde13152a311342f2a7c9

      SHA1

      412217c7f7a1bc72ef563924203d712f6e87408f

      SHA256

      27ac74df7c4637632c8d49b3219099c0a2dc5397b0a0298908f5ab7dccbe4076

      SHA512

      a5dd3c5e7c91101c9d9605ab343d9c361e9d577103695f398d00f0f38d24188d602332355cb009c7774892ba9c1ca74576308d46bffc1eb18113e6fb1c2f94cb

    • \Windows\SysWOW64\fbbvgfhznanjl.exe
      Filesize

      255KB

      MD5

      7daa0c77312bde13152a311342f2a7c9

      SHA1

      412217c7f7a1bc72ef563924203d712f6e87408f

      SHA256

      27ac74df7c4637632c8d49b3219099c0a2dc5397b0a0298908f5ab7dccbe4076

      SHA512

      a5dd3c5e7c91101c9d9605ab343d9c361e9d577103695f398d00f0f38d24188d602332355cb009c7774892ba9c1ca74576308d46bffc1eb18113e6fb1c2f94cb

    • \Windows\SysWOW64\kprxvbvv.exe
      Filesize

      255KB

      MD5

      3cbe1c68a6d26f01e74895787f38ade5

      SHA1

      c3676cf2f8e77c5bd996f4800b8388d0d0abecd3

      SHA256

      c37d6982d51e8ebb62a5d1c14ecf9427b99085ca7aaf0e2febe5c338a9b89e64

      SHA512

      2ef0bed2563383ecf09f8753acdb4b03f2e95a49422b00a29d4307d72de1dda4ca5ecc06f64682eb64c7ee7ef91fcf5306be70862454b1133f4009a202f7eaca

    • \Windows\SysWOW64\kprxvbvv.exe
      Filesize

      255KB

      MD5

      3cbe1c68a6d26f01e74895787f38ade5

      SHA1

      c3676cf2f8e77c5bd996f4800b8388d0d0abecd3

      SHA256

      c37d6982d51e8ebb62a5d1c14ecf9427b99085ca7aaf0e2febe5c338a9b89e64

      SHA512

      2ef0bed2563383ecf09f8753acdb4b03f2e95a49422b00a29d4307d72de1dda4ca5ecc06f64682eb64c7ee7ef91fcf5306be70862454b1133f4009a202f7eaca

    • \Windows\SysWOW64\tiitdjkrxp.exe
      Filesize

      255KB

      MD5

      8b698e3c959e4a5b4d90995dd674a17e

      SHA1

      f9850e00da47c33badabc64949291d0b7dcba0b9

      SHA256

      2162463a889de3636b0e4054be21ad62d1609139ba338cc319c37890b28ea082

      SHA512

      66d654252c454c91542d57cb486c88d3b176b7dc91f8356ecf351c91781a457f31e129d3772f9f203892ef4cc2511c7b50a95c2eab11e0f41a244dc38944c2c8

    • \Windows\SysWOW64\xoctphfzyanxbbo.exe
      Filesize

      255KB

      MD5

      c87ab1577361b359124175076938bb2b

      SHA1

      513d55f8d7974f3c7e25064dc2ae5544175bce05

      SHA256

      4950389bfd381fd312d436562f22d72068930f18c96ede3d05b6799282d9a67a

      SHA512

      8f8b57875af6cb4412e2f0c4a82a2ea694bd9b3634c5e6f7e855b284e08f3518a6538811c92ee928c0e7d85c268fe50ac3b4ef7c5b67d207ac8753a63face2ed

    • memory/428-106-0x0000000000400000-0x00000000004A0000-memory.dmp
      Filesize

      640KB

    • memory/428-95-0x0000000000400000-0x00000000004A0000-memory.dmp
      Filesize

      640KB

    • memory/428-87-0x0000000000000000-mapping.dmp
    • memory/912-78-0x0000000000000000-mapping.dmp
    • memory/912-104-0x0000000000400000-0x00000000004A0000-memory.dmp
      Filesize

      640KB

    • memory/912-88-0x0000000000400000-0x00000000004A0000-memory.dmp
      Filesize

      640KB

    • memory/928-82-0x0000000000400000-0x00000000004A0000-memory.dmp
      Filesize

      640KB

    • memory/928-101-0x0000000000400000-0x00000000004A0000-memory.dmp
      Filesize

      640KB

    • memory/928-105-0x0000000003860000-0x0000000003900000-memory.dmp
      Filesize

      640KB

    • memory/928-57-0x0000000000000000-mapping.dmp
    • memory/1412-85-0x0000000000400000-0x00000000004A0000-memory.dmp
      Filesize

      640KB

    • memory/1412-71-0x0000000000000000-mapping.dmp
    • memory/1412-100-0x0000000000400000-0x00000000004A0000-memory.dmp
      Filesize

      640KB

    • memory/1488-92-0x0000000000400000-0x00000000004A0000-memory.dmp
      Filesize

      640KB

    • memory/1488-55-0x0000000000400000-0x00000000004A0000-memory.dmp
      Filesize

      640KB

    • memory/1488-81-0x00000000033B0000-0x0000000003450000-memory.dmp
      Filesize

      640KB

    • memory/1488-54-0x0000000075DF1000-0x0000000075DF3000-memory.dmp
      Filesize

      8KB

    • memory/1552-83-0x0000000000400000-0x00000000004A0000-memory.dmp
      Filesize

      640KB

    • memory/1552-102-0x0000000000400000-0x00000000004A0000-memory.dmp
      Filesize

      640KB

    • memory/1552-62-0x0000000000000000-mapping.dmp
    • memory/1556-84-0x0000000000400000-0x00000000004A0000-memory.dmp
      Filesize

      640KB

    • memory/1556-66-0x0000000000000000-mapping.dmp
    • memory/1556-103-0x0000000000400000-0x00000000004A0000-memory.dmp
      Filesize

      640KB

    • memory/1604-76-0x0000000000000000-mapping.dmp
    • memory/1796-107-0x0000000000000000-mapping.dmp
    • memory/1796-108-0x000007FEFB731000-0x000007FEFB733000-memory.dmp
      Filesize

      8KB

    • memory/1840-99-0x0000000070AED000-0x0000000070AF8000-memory.dmp
      Filesize

      44KB

    • memory/1840-91-0x0000000000000000-mapping.dmp
    • memory/1840-96-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1840-94-0x000000006FB01000-0x000000006FB03000-memory.dmp
      Filesize

      8KB

    • memory/1840-93-0x0000000072081000-0x0000000072084000-memory.dmp
      Filesize

      12KB

    • memory/1840-112-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1840-113-0x0000000070AED000-0x0000000070AF8000-memory.dmp
      Filesize

      44KB