Resubmissions

03/11/2022, 09:46

221103-lrnd1sghc5 3

22/09/2022, 15:06

220922-sgtavafedj 3

14/10/2021, 16:48

211014-vbeavaaad5 8

22/09/2021, 05:58

210922-gpdpksecgk 8

22/09/2021, 05:36

210922-gax5nsecdn 8

Analysis

  • max time kernel
    126s
  • max time network
    238s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    22/09/2021, 05:58

General

  • Target

    manual64.dll

  • Size

    184KB

  • MD5

    d35a5caf8af43432ec2f5a2318b20597

  • SHA1

    8fd8f62a848a1d9c1ff18c7bc16e8a6d2c67c37e

  • SHA256

    c74873d7b8cc622379ed49bd0b0e477167ae176aa329b01338666ec4c1a4426b

  • SHA512

    7de9c021c2e64c564ba8ac5c0f1914718c240a382bc717dd7e93122a0a51c849c263ae0438eae5c324ca1e5c3d346c2a09ab7fc63bbaa598e3973943a5d84263

Score
8/10

Malware Config

Signatures

  • Modifies extensions of user files 5 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Deletes itself 1 IoCs
  • Drops desktop.ini file(s) 32 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Modifies Internet Explorer settings 1 TTPs 41 IoCs
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\manual64.dll,#1
    1⤵
    • Modifies extensions of user files
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1296
    • C:\Windows\system32\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\\00026C68.bat" "C:\Users\Admin\AppData\Local\Temp\manual64.dll""
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:768
      • C:\Windows\system32\attrib.exe
        attrib -s -r -h "C:\Users\Admin\AppData\Local\Temp\manual64.dll"
        3⤵
        • Views/modifies file attributes
        PID:2004
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\Desktop\README_TO_DECRYPT.html
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:500
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:500 CREDAT:275457 /prefetch:2
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of SetWindowsHookEx
      PID:1612

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1296-60-0x0000000001CB0000-0x0000000001DA2000-memory.dmp

    Filesize

    968KB

  • memory/1612-62-0x00000000762C1000-0x00000000762C3000-memory.dmp

    Filesize

    8KB