Analysis

  • max time kernel
    60s
  • max time network
    112s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    08-07-2021 12:05

General

  • Target

    DHL_PACKAGE_HD98232.pdf.exe

  • Size

    1.3MB

  • MD5

    0e72b26fbd7f27c2753c02193337c280

  • SHA1

    fc000dd71eeace99e08c54e6a8ec6d578c80ed20

  • SHA256

    6095dd10965d4e081e87c366736e0305b7d42f84dbdb10471bcedacfe145f7a5

  • SHA512

    0f222aef8358f3a712871316eb9aa1c24efc36c90396701c4cbae558a3e52bab6c6acedd2a21555e914204fab47f30b586a6322a81fa925042c05eda4ec34950

Malware Config

Signatures

  • RevcodeRat, WebMonitorRat

    WebMonitor is a remote access tool that you can use from any browser access to control, and monitor your phones, or PCs.

  • WebMonitor Payload 3 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.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DHL_PACKAGE_HD98232.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\DHL_PACKAGE_HD98232.pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3908
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\sKUmEKiiItxu" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE12E.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2332
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3876
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\uqcOIx7ZXrsNOVaI.bat" "
        3⤵
          PID:2416

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmpE12E.tmp
      MD5

      8418b94adf7e2db9572e4f785f334b5b

      SHA1

      5c9ed0c6481a2e30d07db7871d44f9b659ec2669

      SHA256

      4ec401f774064973966e832ff4c497d8e6281c0ea45f27e452b4572d096fa1f5

      SHA512

      010ef727df25ffd96012c755d8d6e8fdce015ee7f756fd1a864d7d41b8c6a9bb0a7ce0cc8da331a0993c2fe24ea2f183269b795aa4675a44ded4e0da3c3e11b2

    • C:\Users\Admin\AppData\Local\Temp\uqcOIx7ZXrsNOVaI.bat
      MD5

      9e86c940add690e2f87dbf6b50e57039

      SHA1

      21aac921fd75883d402b7d66bdb93218f118c4e2

      SHA256

      e16e317ae5b2959ef431a520e6260dfe4e8305b939c9bc53bdeb65eb2c5ca4ff

      SHA512

      c6647b8ab0f030bdbb989314baacfd8c9d4dd3ae4b354d46b1e09002373265fb8ac63c866899ab751171001a2d9563b0ba684bf447aa629ad4406df9d700ec59

    • memory/2332-125-0x0000000000000000-mapping.dmp
    • memory/2416-130-0x0000000000000000-mapping.dmp
    • memory/3876-129-0x0000000000400000-0x00000000004F3000-memory.dmp
      Filesize

      972KB

    • memory/3876-127-0x0000000000400000-0x00000000004F3000-memory.dmp
      Filesize

      972KB

    • memory/3876-128-0x000000000049D8CA-mapping.dmp
    • memory/3908-119-0x0000000004FD0000-0x0000000004FD1000-memory.dmp
      Filesize

      4KB

    • memory/3908-123-0x0000000008900000-0x0000000008A00000-memory.dmp
      Filesize

      1024KB

    • memory/3908-124-0x000000000C000000-0x000000000C104000-memory.dmp
      Filesize

      1.0MB

    • memory/3908-122-0x0000000006BD0000-0x0000000006BDF000-memory.dmp
      Filesize

      60KB

    • memory/3908-121-0x0000000004FB0000-0x00000000054AE000-memory.dmp
      Filesize

      5.0MB

    • memory/3908-120-0x0000000005220000-0x0000000005221000-memory.dmp
      Filesize

      4KB

    • memory/3908-114-0x00000000005C0000-0x00000000005C1000-memory.dmp
      Filesize

      4KB

    • memory/3908-118-0x0000000005050000-0x0000000005051000-memory.dmp
      Filesize

      4KB

    • memory/3908-117-0x00000000054B0000-0x00000000054B1000-memory.dmp
      Filesize

      4KB

    • memory/3908-116-0x0000000004F10000-0x0000000004F11000-memory.dmp
      Filesize

      4KB