Resubmissions

06-01-2023 04:36

230106-e8dgtaec46 10

06-01-2023 04:17

230106-ewqxdaeb97 10

Analysis

  • max time kernel
    299s
  • max time network
    160s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    06-01-2023 04:17

General

  • Target

    wj.exe

  • Size

    131KB

  • MD5

    c139e5739b99c5a835aaf6642b7a4378

  • SHA1

    4ef2c73cd79984bd634adddbeef4dd091394ff46

  • SHA256

    c82ab145610c19c3f5a1462196b41347c9786f5e600bdaa477bb98814461d279

  • SHA512

    2fdfcc9534a8045976a795373557ad60548c36ea3c54e334e4a337100e3a879f802989b2dcac6565688f466d5fbde8e4e1e5e7d1b54151aacd2408329140f799

  • SSDEEP

    3072:wLDfdYjOWlRjd+J3lIV4g4SAacOWJPMbwbNddf7wHx7hzlP:wvdkOhfPMcDN7I7tlP

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Unexpected DNS network traffic destination 1 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 13 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies registry class 22 IoCs
  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 44 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Windows\system32\services.exe
    C:\Windows\system32\services.exe
    1⤵
      PID:460
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k netsvcs
        2⤵
        • Suspicious use of NtCreateUserProcessOtherParentProcess
        • Suspicious use of SetThreadContext
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:884
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k WspService
        2⤵
        • Drops file in System32 directory
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        • Modifies registry class
        • Suspicious behavior: GetForegroundWindowSpam
        PID:1372
    • C:\Users\Admin\AppData\Local\Temp\wj.exe
      "C:\Users\Admin\AppData\Local\Temp\wj.exe"
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:2012
      • C:\Users\Admin\AppData\Local\Temp\wj.exe
        "C:\Users\Admin\AppData\Local\Temp\wj.exe" -h
        2⤵
          PID:912
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open
        1⤵
        • Process spawned unexpected child process
        • Suspicious use of WriteProcessMemory
        PID:776
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open
          2⤵
          • Loads dropped DLL
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1456

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\db.dat

        Filesize

        557KB

        MD5

        30d5f615722d12fdda4f378048221909

        SHA1

        e94e3e3a6fae8b29f0f80128761ad1b69304a7eb

        SHA256

        b7cb464cd0c61026ec38d89c0a041393bc9369e217303677551eec65a09d2628

        SHA512

        a561a224d7228ec531a966c7dbd6bc88138e2f4a1c8112e5950644f69bf3a43b1e87e03bc1b4fd5e9ca071b5a9353b18697573404602ccd51f2946faf95144c2

      • C:\Users\Admin\AppData\Local\Temp\db.dll

        Filesize

        52KB

        MD5

        0b35335b70b96d31633d0caa207d71f9

        SHA1

        996c7804fe4d85025e2bd7ea8aa5e33c71518f84

        SHA256

        ec01d244074f45d4f698f5713147e99d76053824a648b306e1debf69f3ba9ce6

        SHA512

        ab3d770e99b3f379165863808f3ffc55d64d8e9384a158e6695d7325e97fa1bb570c5088ccdc1d2c3b90df5be11d6722ede15e7b6552bf90e748cb9c28ab94ce

      • \Users\Admin\AppData\Local\Temp\db.dll

        Filesize

        52KB

        MD5

        0b35335b70b96d31633d0caa207d71f9

        SHA1

        996c7804fe4d85025e2bd7ea8aa5e33c71518f84

        SHA256

        ec01d244074f45d4f698f5713147e99d76053824a648b306e1debf69f3ba9ce6

        SHA512

        ab3d770e99b3f379165863808f3ffc55d64d8e9384a158e6695d7325e97fa1bb570c5088ccdc1d2c3b90df5be11d6722ede15e7b6552bf90e748cb9c28ab94ce

      • \Users\Admin\AppData\Local\Temp\db.dll

        Filesize

        52KB

        MD5

        0b35335b70b96d31633d0caa207d71f9

        SHA1

        996c7804fe4d85025e2bd7ea8aa5e33c71518f84

        SHA256

        ec01d244074f45d4f698f5713147e99d76053824a648b306e1debf69f3ba9ce6

        SHA512

        ab3d770e99b3f379165863808f3ffc55d64d8e9384a158e6695d7325e97fa1bb570c5088ccdc1d2c3b90df5be11d6722ede15e7b6552bf90e748cb9c28ab94ce

      • \Users\Admin\AppData\Local\Temp\db.dll

        Filesize

        52KB

        MD5

        0b35335b70b96d31633d0caa207d71f9

        SHA1

        996c7804fe4d85025e2bd7ea8aa5e33c71518f84

        SHA256

        ec01d244074f45d4f698f5713147e99d76053824a648b306e1debf69f3ba9ce6

        SHA512

        ab3d770e99b3f379165863808f3ffc55d64d8e9384a158e6695d7325e97fa1bb570c5088ccdc1d2c3b90df5be11d6722ede15e7b6552bf90e748cb9c28ab94ce

      • \Users\Admin\AppData\Local\Temp\db.dll

        Filesize

        52KB

        MD5

        0b35335b70b96d31633d0caa207d71f9

        SHA1

        996c7804fe4d85025e2bd7ea8aa5e33c71518f84

        SHA256

        ec01d244074f45d4f698f5713147e99d76053824a648b306e1debf69f3ba9ce6

        SHA512

        ab3d770e99b3f379165863808f3ffc55d64d8e9384a158e6695d7325e97fa1bb570c5088ccdc1d2c3b90df5be11d6722ede15e7b6552bf90e748cb9c28ab94ce

      • memory/884-69-0x0000000000840000-0x000000000088D000-memory.dmp

        Filesize

        308KB

      • memory/884-79-0x0000000000840000-0x000000000088D000-memory.dmp

        Filesize

        308KB

      • memory/884-70-0x0000000001910000-0x0000000001982000-memory.dmp

        Filesize

        456KB

      • memory/1372-80-0x00000000004B0000-0x0000000000522000-memory.dmp

        Filesize

        456KB

      • memory/1372-82-0x0000000000470000-0x000000000048B000-memory.dmp

        Filesize

        108KB

      • memory/1372-86-0x0000000002980000-0x0000000002A8A000-memory.dmp

        Filesize

        1.0MB

      • memory/1372-64-0x0000000000060000-0x00000000000AD000-memory.dmp

        Filesize

        308KB

      • memory/1372-71-0x0000000000060000-0x00000000000AD000-memory.dmp

        Filesize

        308KB

      • memory/1372-72-0x00000000004B0000-0x0000000000522000-memory.dmp

        Filesize

        456KB

      • memory/1372-85-0x0000000001C70000-0x0000000001C8B000-memory.dmp

        Filesize

        108KB

      • memory/1372-84-0x0000000001C50000-0x0000000001C70000-memory.dmp

        Filesize

        128KB

      • memory/1372-81-0x000007FEFBF81000-0x000007FEFBF83000-memory.dmp

        Filesize

        8KB

      • memory/1372-83-0x0000000002980000-0x0000000002A8A000-memory.dmp

        Filesize

        1.0MB

      • memory/1456-67-0x0000000001F60000-0x0000000002061000-memory.dmp

        Filesize

        1.0MB

      • memory/1456-68-0x0000000000350000-0x00000000003AE000-memory.dmp

        Filesize

        376KB

      • memory/2012-54-0x0000000075761000-0x0000000075763000-memory.dmp

        Filesize

        8KB