Analysis

  • max time kernel
    151s
  • max time network
    159s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 11:02

General

  • Target

    983918784e12918497d874451a0113b744bab66ab9351368362861b5d8b5a25d.exe

  • Size

    1.3MB

  • MD5

    b9ffc7e4d2413c76c54c2696926b81de

  • SHA1

    c8402f1d30aab49f08a6b0ba31852768a312638e

  • SHA256

    983918784e12918497d874451a0113b744bab66ab9351368362861b5d8b5a25d

  • SHA512

    8dbc89018d66b63cb9efc709cd9978a58b1098487163a5ecd0f75222898b8d44a207ff8681d04db5125d3ddc54c0a1b9dd112c935692f7159ca80771c4f8a223

  • SSDEEP

    24576:ic7CY4MX37grFZMnC5PNqHzB4zjSb3MztL3Ocr8NkpkmIwXPZMFOXG8:Z7qK3yx5P6zBOjSb3Mzt7z1ktoPEB8

Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 7 IoCs
  • Drops file in Program Files directory 1 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 23 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\983918784e12918497d874451a0113b744bab66ab9351368362861b5d8b5a25d.exe
    "C:\Users\Admin\AppData\Local\Temp\983918784e12918497d874451a0113b744bab66ab9351368362861b5d8b5a25d.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1452
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" http://f.shuianshanba.com/983918784e12918497d874451a0113b744bab66ab9351368362861b5d8b5a25d.exe/40.jpg
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:968
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:968 CREDAT:275457 /prefetch:2
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:1740

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\nsj8421.tmp\Inetc.dll

    Filesize

    20KB

    MD5

    50fdadda3e993688401f6f1108fabdb4

    SHA1

    04a9ae55d0fb726be49809582cea41d75bf22a9a

    SHA256

    6d6ddc0d2b7d59eb91be44939457858ced5eb23cf4aa93ef33bb600eb28de6f6

    SHA512

    e9628870feea8c3aaefe22a2af41cf34b1c1778c4a0e81d069f50553ce1a23f68a0ba74b296420b2be92425d4995a43e51c018c2e8197ec2ec39305e87c56be8

  • \Users\Admin\AppData\Local\Temp\nsj8421.tmp\Inetc.dll

    Filesize

    20KB

    MD5

    50fdadda3e993688401f6f1108fabdb4

    SHA1

    04a9ae55d0fb726be49809582cea41d75bf22a9a

    SHA256

    6d6ddc0d2b7d59eb91be44939457858ced5eb23cf4aa93ef33bb600eb28de6f6

    SHA512

    e9628870feea8c3aaefe22a2af41cf34b1c1778c4a0e81d069f50553ce1a23f68a0ba74b296420b2be92425d4995a43e51c018c2e8197ec2ec39305e87c56be8

  • \Users\Admin\AppData\Local\Temp\nsj8421.tmp\Inetc.dll

    Filesize

    20KB

    MD5

    50fdadda3e993688401f6f1108fabdb4

    SHA1

    04a9ae55d0fb726be49809582cea41d75bf22a9a

    SHA256

    6d6ddc0d2b7d59eb91be44939457858ced5eb23cf4aa93ef33bb600eb28de6f6

    SHA512

    e9628870feea8c3aaefe22a2af41cf34b1c1778c4a0e81d069f50553ce1a23f68a0ba74b296420b2be92425d4995a43e51c018c2e8197ec2ec39305e87c56be8

  • \Users\Admin\AppData\Local\Temp\nsj8421.tmp\Inetc.dll

    Filesize

    20KB

    MD5

    50fdadda3e993688401f6f1108fabdb4

    SHA1

    04a9ae55d0fb726be49809582cea41d75bf22a9a

    SHA256

    6d6ddc0d2b7d59eb91be44939457858ced5eb23cf4aa93ef33bb600eb28de6f6

    SHA512

    e9628870feea8c3aaefe22a2af41cf34b1c1778c4a0e81d069f50553ce1a23f68a0ba74b296420b2be92425d4995a43e51c018c2e8197ec2ec39305e87c56be8

  • \Users\Admin\AppData\Local\Temp\nsj8421.tmp\Inetc.dll

    Filesize

    20KB

    MD5

    50fdadda3e993688401f6f1108fabdb4

    SHA1

    04a9ae55d0fb726be49809582cea41d75bf22a9a

    SHA256

    6d6ddc0d2b7d59eb91be44939457858ced5eb23cf4aa93ef33bb600eb28de6f6

    SHA512

    e9628870feea8c3aaefe22a2af41cf34b1c1778c4a0e81d069f50553ce1a23f68a0ba74b296420b2be92425d4995a43e51c018c2e8197ec2ec39305e87c56be8

  • \Users\Admin\AppData\Local\Temp\nsj8421.tmp\System.dll

    Filesize

    11KB

    MD5

    c17103ae9072a06da581dec998343fc1

    SHA1

    b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

    SHA256

    dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

    SHA512

    d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

  • \Users\Admin\AppData\Local\Temp\nsj8421.tmp\nsProcess.dll

    Filesize

    4KB

    MD5

    05450face243b3a7472407b999b03a72

    SHA1

    ffd88af2e338ae606c444390f7eaaf5f4aef2cd9

    SHA256

    95fe9d92512ff2318cc2520311ef9145b2cee01209ab0e1b6e45c7ce1d4d0e89

    SHA512

    f4cbe30166aff20a226a7150d93a876873ba699d80d7e9f46f32a9b4753fa7966c3113a3124340b39ca67a13205463a413e740e541e742903e3f89af5a53ad3b

  • memory/1452-54-0x0000000075041000-0x0000000075043000-memory.dmp

    Filesize

    8KB