Analysis

  • max time kernel
    149s
  • max time network
    115s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    06-03-2023 11:36

General

  • Target

    d5e7b6fe3bb68f1da7ec111231292f02.exe

  • Size

    308KB

  • MD5

    d5e7b6fe3bb68f1da7ec111231292f02

  • SHA1

    1e71cbeb2caba1f955219f916fce7d13c05436b6

  • SHA256

    b261a7995c16bc433bd714b2830e519c40c3b8bd60ad6a6239ce27e672dc6650

  • SHA512

    f9d71917272958ef2cdae91b812d7aca62ee1d0993957ae734aaa7cbdcc88792cb52614515aa8f94c176ac56ac4f89bae902c142c5e187584fe25e7a335ac2c2

  • SSDEEP

    6144:bOsY+HgEiTA14Xn0Ti8v1bbFgXIQdjrfzNt1dEP3:i814Xn0Ti8tbJyIQdjrfzPEP3

Malware Config

Signatures

  • Detects PseudoManuscrypt payload 8 IoCs
  • Process spawned unexpected child process 1 IoCs

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

  • PseudoManuscrypt

    PseudoManuscrypt is a malware Lazarus’s Manuscrypt targeting government organizations and ICS.

  • 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 5 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 SetWindowsHookEx 4 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:832
      • 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:544
    • C:\Users\Admin\AppData\Local\Temp\d5e7b6fe3bb68f1da7ec111231292f02.exe
      "C:\Users\Admin\AppData\Local\Temp\d5e7b6fe3bb68f1da7ec111231292f02.exe"
      1⤵
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2000
      • C:\Users\Admin\AppData\Local\Temp\d5e7b6fe3bb68f1da7ec111231292f02.exe
        "C:\Users\Admin\AppData\Local\Temp\d5e7b6fe3bb68f1da7ec111231292f02.exe" -h
        2⤵
        • Suspicious use of SetWindowsHookEx
        PID:920
    • 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:268
      • 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:588

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      557KB

      MD5

      d8fdf3094adfa6cd96ad85cb3b1c0888

      SHA1

      e1ff8d0d9d04b6da1c78fa2eeb002f89e1c217ef

      SHA256

      234b037565a89b5d3cdabb963390b84bbfb23f68de1d7a940d250c13d6eb2087

      SHA512

      a55f0f2a2bc7182c639de20bcafab8ad71416665b3e9f24276d55a03312f0a0014ff12916a08f42edbfd8f58b2bc59e01010271bed028c2c67cce97535af6a94

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

      Filesize

      52KB

      MD5

      1b20e998d058e813dfc515867d31124f

      SHA1

      c9dc9c42a748af18ae1a8c882b90a2b9e3313e6f

      SHA256

      24a53033a2e89acf65f6a5e60d35cb223585817032635e81bf31264eb7dabd00

      SHA512

      79849fbdb9a9e7f7684b570d14662448b093b8aa2b23dfd95856db3a78faf75a95d95c51b8aa8506c4fbecffebcc57cd153dda38c830c05b8cd38629fae673c6

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

      Filesize

      52KB

      MD5

      1b20e998d058e813dfc515867d31124f

      SHA1

      c9dc9c42a748af18ae1a8c882b90a2b9e3313e6f

      SHA256

      24a53033a2e89acf65f6a5e60d35cb223585817032635e81bf31264eb7dabd00

      SHA512

      79849fbdb9a9e7f7684b570d14662448b093b8aa2b23dfd95856db3a78faf75a95d95c51b8aa8506c4fbecffebcc57cd153dda38c830c05b8cd38629fae673c6

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

      Filesize

      52KB

      MD5

      1b20e998d058e813dfc515867d31124f

      SHA1

      c9dc9c42a748af18ae1a8c882b90a2b9e3313e6f

      SHA256

      24a53033a2e89acf65f6a5e60d35cb223585817032635e81bf31264eb7dabd00

      SHA512

      79849fbdb9a9e7f7684b570d14662448b093b8aa2b23dfd95856db3a78faf75a95d95c51b8aa8506c4fbecffebcc57cd153dda38c830c05b8cd38629fae673c6

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

      Filesize

      52KB

      MD5

      1b20e998d058e813dfc515867d31124f

      SHA1

      c9dc9c42a748af18ae1a8c882b90a2b9e3313e6f

      SHA256

      24a53033a2e89acf65f6a5e60d35cb223585817032635e81bf31264eb7dabd00

      SHA512

      79849fbdb9a9e7f7684b570d14662448b093b8aa2b23dfd95856db3a78faf75a95d95c51b8aa8506c4fbecffebcc57cd153dda38c830c05b8cd38629fae673c6

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

      Filesize

      52KB

      MD5

      1b20e998d058e813dfc515867d31124f

      SHA1

      c9dc9c42a748af18ae1a8c882b90a2b9e3313e6f

      SHA256

      24a53033a2e89acf65f6a5e60d35cb223585817032635e81bf31264eb7dabd00

      SHA512

      79849fbdb9a9e7f7684b570d14662448b093b8aa2b23dfd95856db3a78faf75a95d95c51b8aa8506c4fbecffebcc57cd153dda38c830c05b8cd38629fae673c6

    • memory/544-117-0x0000000002E80000-0x0000000002F8A000-memory.dmp

      Filesize

      1.0MB

    • memory/544-94-0x0000000001CE0000-0x0000000001CFB000-memory.dmp

      Filesize

      108KB

    • memory/544-93-0x0000000001CC0000-0x0000000001CE0000-memory.dmp

      Filesize

      128KB

    • memory/544-66-0x0000000000060000-0x00000000000AD000-memory.dmp

      Filesize

      308KB

    • memory/544-67-0x0000000000220000-0x0000000000292000-memory.dmp

      Filesize

      456KB

    • memory/544-92-0x0000000002E80000-0x0000000002F8A000-memory.dmp

      Filesize

      1.0MB

    • memory/544-84-0x0000000000220000-0x0000000000292000-memory.dmp

      Filesize

      456KB

    • memory/544-72-0x0000000000220000-0x0000000000292000-memory.dmp

      Filesize

      456KB

    • memory/544-91-0x00000000004F0000-0x000000000050B000-memory.dmp

      Filesize

      108KB

    • memory/544-90-0x0000000000220000-0x0000000000292000-memory.dmp

      Filesize

      456KB

    • memory/544-75-0x0000000000220000-0x0000000000292000-memory.dmp

      Filesize

      456KB

    • memory/544-85-0x0000000000220000-0x0000000000292000-memory.dmp

      Filesize

      456KB

    • memory/588-70-0x0000000000640000-0x000000000069E000-memory.dmp

      Filesize

      376KB

    • memory/588-68-0x0000000000530000-0x0000000000631000-memory.dmp

      Filesize

      1.0MB

    • memory/832-83-0x0000000000A60000-0x0000000000AAD000-memory.dmp

      Filesize

      308KB

    • memory/832-74-0x0000000001780000-0x00000000017F2000-memory.dmp

      Filesize

      456KB

    • memory/832-73-0x0000000000A60000-0x0000000000AAD000-memory.dmp

      Filesize

      308KB

    • memory/832-65-0x0000000000A60000-0x0000000000AAD000-memory.dmp

      Filesize

      308KB

    • memory/832-63-0x0000000001780000-0x00000000017F2000-memory.dmp

      Filesize

      456KB

    • memory/832-62-0x0000000000A60000-0x0000000000AAD000-memory.dmp

      Filesize

      308KB