Analysis

  • max time kernel
    140s
  • max time network
    181s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    25-06-2022 05:22

General

  • Target

    6dfce07abc39e5d6aebd74a1850ad65cc6ce10a8540b551c4f6d441ec4cf48ab.exe

  • Size

    468KB

  • MD5

    35d60d2723c649c97b414b3cb701df1c

  • SHA1

    9944ce9354fb8961826339770ffc118000058271

  • SHA256

    6dfce07abc39e5d6aebd74a1850ad65cc6ce10a8540b551c4f6d441ec4cf48ab

  • SHA512

    7b010b8dd4845bcfbfef66848fa0a29b987734a7adb41f07bbc025527ee33459edac7674f954016e96c3704e0ed9130104c5cf4625b78927a19c727812ca389c

Score
8/10

Malware Config

Signatures

  • Blocklisted process makes network request 2 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6dfce07abc39e5d6aebd74a1850ad65cc6ce10a8540b551c4f6d441ec4cf48ab.exe
    "C:\Users\Admin\AppData\Local\Temp\6dfce07abc39e5d6aebd74a1850ad65cc6ce10a8540b551c4f6d441ec4cf48ab.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1728
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\rns.bat" "
      2⤵
      • Deletes itself
      PID:1640
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\System32\regsvr32.exe" /s /n /i NewACt.dat
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1536
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\system32\rundll32.exe "C:\Users\Admin\AppData\Roaming\Microsoft\NewACt.dat",checkdrive
        3⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        PID:908

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\rns.bat

    Filesize

    296B

    MD5

    5fea73ccfab1fec3832408ad4c33f786

    SHA1

    c4aeedbf9ce66565e74d3806ad3c76282ed83fb1

    SHA256

    9820d84bdfde1dd8f12ec2306fdeb9089724abd7b9d4b1a0f9f26d4e41b13422

    SHA512

    9af2b2979beb22bd417861bc56fc4eb86635a63e93cb74437ebb7450e90b4b8c814a8ac9ccfc9cf967cafb83867a9fd7353ba5b02dedddf03ce10a5e48c1fed4

  • C:\Users\Admin\AppData\Roaming\Microsoft\NewACt.dat

    Filesize

    109KB

    MD5

    e54b370d96ca0e2ecc083c2d42f05210

    SHA1

    03c35e4c6a641373db665e7d58cea421188fbc82

    SHA256

    1050935f6acee3afda3876478718632b968c986eb9c59fc2e27599c1515515f5

    SHA512

    dbdd30cd32160d716578e325a32db6822227271082ffd78daf0d9d4dad3c04445fe5a10b726bf4bb71d88382e56041ff326132c748a8139e4932e1103734e2d4

  • \Users\Admin\AppData\Roaming\Microsoft\NewACt.dat

    Filesize

    109KB

    MD5

    e54b370d96ca0e2ecc083c2d42f05210

    SHA1

    03c35e4c6a641373db665e7d58cea421188fbc82

    SHA256

    1050935f6acee3afda3876478718632b968c986eb9c59fc2e27599c1515515f5

    SHA512

    dbdd30cd32160d716578e325a32db6822227271082ffd78daf0d9d4dad3c04445fe5a10b726bf4bb71d88382e56041ff326132c748a8139e4932e1103734e2d4

  • \Users\Admin\AppData\Roaming\Microsoft\NewACt.dat

    Filesize

    109KB

    MD5

    e54b370d96ca0e2ecc083c2d42f05210

    SHA1

    03c35e4c6a641373db665e7d58cea421188fbc82

    SHA256

    1050935f6acee3afda3876478718632b968c986eb9c59fc2e27599c1515515f5

    SHA512

    dbdd30cd32160d716578e325a32db6822227271082ffd78daf0d9d4dad3c04445fe5a10b726bf4bb71d88382e56041ff326132c748a8139e4932e1103734e2d4

  • memory/908-61-0x0000000000000000-mapping.dmp

  • memory/1536-57-0x0000000000000000-mapping.dmp

  • memory/1640-55-0x0000000000000000-mapping.dmp

  • memory/1728-54-0x0000000076171000-0x0000000076173000-memory.dmp

    Filesize

    8KB