Analysis

  • max time kernel
    150s
  • max time network
    132s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    24-01-2022 01:07

General

  • Target

    c4a7f8b8046a6623cd7909bacb1cbef13471a4efd8adb4aedbf7fc1377ab502d.exe

  • Size

    158KB

  • MD5

    6dc266627079d874d817794dc2e46d52

  • SHA1

    7a0345d8f4f74754ef7163834c14137234d56862

  • SHA256

    c4a7f8b8046a6623cd7909bacb1cbef13471a4efd8adb4aedbf7fc1377ab502d

  • SHA512

    7896a0b907e1b3c5ac14cf1152ea18d801165573c997bee06549cc42e573bd57da15ca7bcc1834005a6996041d20592a857bf637765d7f08f8a37d15570576eb

Score
10/10

Malware Config

Signatures

  • Sodin,Sodinokibi,REvil

    Ransomware with advanced anti-analysis and privilege escalation functionality.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Enumerates connected drives 3 TTPs 24 IoCs

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

  • Drops file in Windows directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c4a7f8b8046a6623cd7909bacb1cbef13471a4efd8adb4aedbf7fc1377ab502d.exe
    "C:\Users\Admin\AppData\Local\Temp\c4a7f8b8046a6623cd7909bacb1cbef13471a4efd8adb4aedbf7fc1377ab502d.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1100
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe Delete Shadows /All /Quiet & bcdedit /set {default} recoveryenabled No & bcdedit /set {default} bootstatuspolicy ignoreallfailures
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:608
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin.exe Delete Shadows /All /Quiet
        3⤵
        • Interacts with shadow copies
        PID:564
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:276

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1100-55-0x0000000075421000-0x0000000075423000-memory.dmp
    Filesize

    8KB

  • memory/1100-57-0x0000000002080000-0x000000000211F000-memory.dmp
    Filesize

    636KB

  • memory/1100-58-0x0000000002220000-0x000000000234D000-memory.dmp
    Filesize

    1.2MB

  • memory/1100-59-0x0000000000070000-0x000000000007A000-memory.dmp
    Filesize

    40KB

  • memory/1100-61-0x0000000000250000-0x0000000000251000-memory.dmp
    Filesize

    4KB

  • memory/1100-60-0x0000000000080000-0x0000000000081000-memory.dmp
    Filesize

    4KB

  • memory/1100-62-0x0000000000260000-0x0000000000261000-memory.dmp
    Filesize

    4KB

  • memory/1100-63-0x00000000004D0000-0x00000000004EF000-memory.dmp
    Filesize

    124KB

  • memory/1100-64-0x00000000025B0000-0x00000000026B9000-memory.dmp
    Filesize

    1.0MB

  • memory/1100-65-0x0000000000270000-0x0000000000276000-memory.dmp
    Filesize

    24KB