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Analysis

  • max time kernel
    200s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    05/12/2022, 10:57

General

  • Target

    9e4ead97bc01dea4219d43098916e5212120264fd60af0d2bdc3a3a268313155.exe

  • Size

    138KB

  • MD5

    743f3e4ad35f4e17a9951db808954955

  • SHA1

    6f3c61f9fc025d31689fbe179d97c7916735057c

  • SHA256

    9e4ead97bc01dea4219d43098916e5212120264fd60af0d2bdc3a3a268313155

  • SHA512

    3b36780759c0eb7bf011618fc46ef4beb322bf9eeddca8a42631a06443e773e6f68b4f536cf9466900c70ea33e60d817f760a88a8a0b3c3cea366c740f122384

  • SSDEEP

    3072:VBYqATWne3lWRkNpZHPImtS5Es2K9Tbw9yDx9ZP61JN:z3Af3lsk7BPXS5Es2ATbwivZP61

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Deletes itself 1 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in System32 directory 2 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies registry class 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9e4ead97bc01dea4219d43098916e5212120264fd60af0d2bdc3a3a268313155.exe
    "C:\Users\Admin\AppData\Local\Temp\9e4ead97bc01dea4219d43098916e5212120264fd60af0d2bdc3a3a268313155.exe"
    1⤵
    • Writes to the Master Boot Record (MBR)
    • Drops file in System32 directory
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1936
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\9E4EAD~1.EXE > nul
      2⤵
      • Deletes itself
      PID:948
  • C:\Windows\SysWOW64\Wi4352t.exe
    C:\Windows\SysWOW64\Wi4352t.exe
    1⤵
    • Executes dropped EXE
    • Writes to the Master Boot Record (MBR)
    • Checks processor information in registry
    • Modifies registry class
    PID:1148

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\SysWOW64\Wi4352t.exe

    Filesize

    138KB

    MD5

    743f3e4ad35f4e17a9951db808954955

    SHA1

    6f3c61f9fc025d31689fbe179d97c7916735057c

    SHA256

    9e4ead97bc01dea4219d43098916e5212120264fd60af0d2bdc3a3a268313155

    SHA512

    3b36780759c0eb7bf011618fc46ef4beb322bf9eeddca8a42631a06443e773e6f68b4f536cf9466900c70ea33e60d817f760a88a8a0b3c3cea366c740f122384

  • memory/1148-62-0x0000000000400000-0x0000000000428000-memory.dmp

    Filesize

    160KB

  • memory/1148-63-0x0000000000250000-0x0000000000280000-memory.dmp

    Filesize

    192KB

  • memory/1936-54-0x0000000000400000-0x0000000000428000-memory.dmp

    Filesize

    160KB

  • memory/1936-55-0x00000000002F0000-0x0000000000320000-memory.dmp

    Filesize

    192KB

  • memory/1936-56-0x00000000003E0000-0x00000000003E3000-memory.dmp

    Filesize

    12KB

  • memory/1936-57-0x0000000000400000-0x0000000000428000-memory.dmp

    Filesize

    160KB

  • memory/1936-60-0x0000000000400000-0x0000000000428000-memory.dmp

    Filesize

    160KB

  • memory/1936-61-0x00000000002F0000-0x0000000000320000-memory.dmp

    Filesize

    192KB