Analysis

  • max time kernel
    150s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    06-11-2022 20:51

General

  • Target

    a1335376041cdfcab9c8620eed3639502efe31194d96424ef96c403fc895c6c0.exe

  • Size

    1.4MB

  • MD5

    1a2f54c41cd250b09ef510d050edf1d0

  • SHA1

    c902dfcce97b2a5aa9314c2e48372c7efd11b203

  • SHA256

    a1335376041cdfcab9c8620eed3639502efe31194d96424ef96c403fc895c6c0

  • SHA512

    95170bae682b14e9d72eda149218f5a2a8281aa5ca3060d23e45a1b505dd4e2c2af7ddb475b8820a66dbe4d9ea0283373076cead0cb2e35248ac0eb451074c02

  • SSDEEP

    24576:1WLe3ALgHOiGxSdVRudb0RX3owL1PvXlTZOTSpS/e7+6Px+LTGJOp:1WHLjCRG0RX1OTSpS/e7Bp+LTGJO

Malware Config

Signatures

  • Ramnit

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

  • Executes dropped EXE 2 IoCs
  • UPX packed file 3 IoCs

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

  • Loads dropped DLL 4 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 29 IoCs
  • Modifies registry class 21 IoCs
  • Suspicious behavior: EnumeratesProcesses 19 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a1335376041cdfcab9c8620eed3639502efe31194d96424ef96c403fc895c6c0.exe
    "C:\Users\Admin\AppData\Local\Temp\a1335376041cdfcab9c8620eed3639502efe31194d96424ef96c403fc895c6c0.exe"
    1⤵
    • Loads dropped DLL
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:832
    • C:\Users\Admin\AppData\Local\Temp\a1335376041cdfcab9c8620eed3639502efe31194d96424ef96c403fc895c6c0Srv.exe
      C:\Users\Admin\AppData\Local\Temp\a1335376041cdfcab9c8620eed3639502efe31194d96424ef96c403fc895c6c0Srv.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:1204
      • C:\Program Files (x86)\Microsoft\DesktopLayer.exe
        "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of UnmapMainImage
        • Suspicious use of WriteProcessMemory
        PID:2028
        • 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:1176
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1176 CREDAT:275457 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:1860

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    52KB

    MD5

    17efb7e40d4cadaf3a4369435a8772ec

    SHA1

    eb9302063ac2ab599ae93aaa1e45b88bbeacbca2

    SHA256

    f515564b67efd06fa42f57532feafc49d40b0fc36c5d4935300dd55416f0a386

    SHA512

    522fba06304950860fa9aa8933b12b9323dea47dbda363db3f57535396c156c4cf6934a9db38fff8c77503fcb889d030fadb639094a1f34bbad54c79c8734450

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

    Filesize

    52KB

    MD5

    17efb7e40d4cadaf3a4369435a8772ec

    SHA1

    eb9302063ac2ab599ae93aaa1e45b88bbeacbca2

    SHA256

    f515564b67efd06fa42f57532feafc49d40b0fc36c5d4935300dd55416f0a386

    SHA512

    522fba06304950860fa9aa8933b12b9323dea47dbda363db3f57535396c156c4cf6934a9db38fff8c77503fcb889d030fadb639094a1f34bbad54c79c8734450

  • C:\Users\Admin\AppData\Local\Temp\a1335376041cdfcab9c8620eed3639502efe31194d96424ef96c403fc895c6c0Srv.exe

    Filesize

    52KB

    MD5

    17efb7e40d4cadaf3a4369435a8772ec

    SHA1

    eb9302063ac2ab599ae93aaa1e45b88bbeacbca2

    SHA256

    f515564b67efd06fa42f57532feafc49d40b0fc36c5d4935300dd55416f0a386

    SHA512

    522fba06304950860fa9aa8933b12b9323dea47dbda363db3f57535396c156c4cf6934a9db38fff8c77503fcb889d030fadb639094a1f34bbad54c79c8734450

  • C:\Users\Admin\AppData\Local\Temp\a1335376041cdfcab9c8620eed3639502efe31194d96424ef96c403fc895c6c0Srv.exe

    Filesize

    52KB

    MD5

    17efb7e40d4cadaf3a4369435a8772ec

    SHA1

    eb9302063ac2ab599ae93aaa1e45b88bbeacbca2

    SHA256

    f515564b67efd06fa42f57532feafc49d40b0fc36c5d4935300dd55416f0a386

    SHA512

    522fba06304950860fa9aa8933b12b9323dea47dbda363db3f57535396c156c4cf6934a9db38fff8c77503fcb889d030fadb639094a1f34bbad54c79c8734450

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\OJRS9GLT.txt

    Filesize

    608B

    MD5

    efc0fd47db12adcde82422746f1c51d5

    SHA1

    416c0d4b966d084cbfb1aa6c5d084b81cf5e9f81

    SHA256

    d4c500a13bdcb5a4b0f01e52b232c76ebbd1180ab91873ab0e8ff1dd3342c7b8

    SHA512

    e08eba2cc4950a04ed0bd2b03792764cdf523e9e0b5aec34958bbfca6e0aa8917ae017d82700aedd916fbbb8b8d7692282cda33f7814176bc58b044834a930de

  • \Program Files (x86)\Microsoft\DesktopLayer.exe

    Filesize

    52KB

    MD5

    17efb7e40d4cadaf3a4369435a8772ec

    SHA1

    eb9302063ac2ab599ae93aaa1e45b88bbeacbca2

    SHA256

    f515564b67efd06fa42f57532feafc49d40b0fc36c5d4935300dd55416f0a386

    SHA512

    522fba06304950860fa9aa8933b12b9323dea47dbda363db3f57535396c156c4cf6934a9db38fff8c77503fcb889d030fadb639094a1f34bbad54c79c8734450

  • \Program Files (x86)\Microsoft\DesktopLayer.exe

    Filesize

    52KB

    MD5

    17efb7e40d4cadaf3a4369435a8772ec

    SHA1

    eb9302063ac2ab599ae93aaa1e45b88bbeacbca2

    SHA256

    f515564b67efd06fa42f57532feafc49d40b0fc36c5d4935300dd55416f0a386

    SHA512

    522fba06304950860fa9aa8933b12b9323dea47dbda363db3f57535396c156c4cf6934a9db38fff8c77503fcb889d030fadb639094a1f34bbad54c79c8734450

  • \Users\Admin\AppData\Local\Temp\a1335376041cdfcab9c8620eed3639502efe31194d96424ef96c403fc895c6c0Srv.exe

    Filesize

    52KB

    MD5

    17efb7e40d4cadaf3a4369435a8772ec

    SHA1

    eb9302063ac2ab599ae93aaa1e45b88bbeacbca2

    SHA256

    f515564b67efd06fa42f57532feafc49d40b0fc36c5d4935300dd55416f0a386

    SHA512

    522fba06304950860fa9aa8933b12b9323dea47dbda363db3f57535396c156c4cf6934a9db38fff8c77503fcb889d030fadb639094a1f34bbad54c79c8734450

  • \Users\Admin\AppData\Local\Temp\a1335376041cdfcab9c8620eed3639502efe31194d96424ef96c403fc895c6c0Srv.exe

    Filesize

    52KB

    MD5

    17efb7e40d4cadaf3a4369435a8772ec

    SHA1

    eb9302063ac2ab599ae93aaa1e45b88bbeacbca2

    SHA256

    f515564b67efd06fa42f57532feafc49d40b0fc36c5d4935300dd55416f0a386

    SHA512

    522fba06304950860fa9aa8933b12b9323dea47dbda363db3f57535396c156c4cf6934a9db38fff8c77503fcb889d030fadb639094a1f34bbad54c79c8734450

  • memory/832-59-0x0000000076BA1000-0x0000000076BA3000-memory.dmp

    Filesize

    8KB

  • memory/832-69-0x00000000001F0000-0x0000000000360000-memory.dmp

    Filesize

    1.4MB

  • memory/832-70-0x0000000000080000-0x0000000000093000-memory.dmp

    Filesize

    76KB

  • memory/832-71-0x0000000000080000-0x0000000000093000-memory.dmp

    Filesize

    76KB

  • memory/832-72-0x00000000001F0000-0x0000000000360000-memory.dmp

    Filesize

    1.4MB

  • memory/832-73-0x0000000000080000-0x0000000000093000-memory.dmp

    Filesize

    76KB

  • memory/832-74-0x0000000000080000-0x0000000000093000-memory.dmp

    Filesize

    76KB

  • memory/1204-65-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/1204-56-0x0000000000000000-mapping.dmp

  • memory/1204-58-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/2028-63-0x0000000000000000-mapping.dmp

  • memory/2028-68-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB