Analysis

  • max time kernel
    149s
  • max time network
    147s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    22-03-2023 08:40

General

  • Target

    bbd550a356ad847fbec4080976e7f7d72b3d431d923df772b65880b7a5cc7254.exe

  • Size

    880KB

  • MD5

    50793b3b016fe3d7042a286e70c8c2db

  • SHA1

    636db5add1b385fdbe8f01a097a39aa64591fc8e

  • SHA256

    bbd550a356ad847fbec4080976e7f7d72b3d431d923df772b65880b7a5cc7254

  • SHA512

    b2035b2fcd0eb4b3874b2a0cf14ce25b17509129fe88924f1884a70e78b51a78922d6299e728b113754cbb1b21f02565c4367644d99712f93f052134a9ac91b3

  • SSDEEP

    6144:LQuiA1RTz/cYja2ieb5YbF5R+Jn8xH97r7FU1d43wUmDm:nz/9ja2ieFYp5R+I7uY

Malware Config

Signatures

  • Detects PseudoManuscrypt payload 28 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.

  • Loads dropped DLL 1 IoCs
  • Unexpected DNS network traffic destination 3 IoCs

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

  • 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 5 IoCs
  • Modifies registry class 8 IoCs
  • Script User-Agent 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 37 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:380
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1136
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Schedule
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1056
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Themes
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1184
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s SENS
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1316
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s UserManager
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1356
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Browser
    1⤵
    • Suspicious use of SetThreadContext
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2692
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k WspService
      2⤵
      • Checks processor information in registry
      • Modifies data under HKEY_USERS
      • Modifies registry class
      PID:4596
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s WpnService
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2432
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2412
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2336
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2276
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1860
  • C:\Users\Admin\AppData\Local\Temp\bbd550a356ad847fbec4080976e7f7d72b3d431d923df772b65880b7a5cc7254.exe
    "C:\Users\Admin\AppData\Local\Temp\bbd550a356ad847fbec4080976e7f7d72b3d431d923df772b65880b7a5cc7254.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2100
    • C:\Users\Admin\AppData\Local\Temp\bbd550a356ad847fbec4080976e7f7d72b3d431d923df772b65880b7a5cc7254.exe
      "C:\Users\Admin\AppData\Local\Temp\bbd550a356ad847fbec4080976e7f7d72b3d431d923df772b65880b7a5cc7254.exe" -h
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:3876
  • 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:4884
    • 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:3096

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    557KB

    MD5

    12a2ea9884738cc71cd622a9c86bc041

    SHA1

    e0dbb25a0c54b69c2b35e05ba58f40b053463f4b

    SHA256

    1181ed73b4f90cb0fc4c787d4791adf14ac25bbb02460a78ab0959bd2dbf5aaf

    SHA512

    d0abf082376c90bdaff759b7e7502c0791de17ca554e695141506e6f6f0fe29aac9d71e817d4a601e2b2db47c88e03203d54f59cdd29c0f7b1e161c5a063c15b

  • 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

  • memory/380-197-0x0000023087220000-0x0000023087292000-memory.dmp

    Filesize

    456KB

  • memory/380-142-0x0000023087220000-0x0000023087292000-memory.dmp

    Filesize

    456KB

  • memory/1056-207-0x000001CC76940000-0x000001CC769B2000-memory.dmp

    Filesize

    456KB

  • memory/1056-167-0x000001CC76940000-0x000001CC769B2000-memory.dmp

    Filesize

    456KB

  • memory/1136-161-0x000001763B700000-0x000001763B772000-memory.dmp

    Filesize

    456KB

  • memory/1136-203-0x000001763B700000-0x000001763B772000-memory.dmp

    Filesize

    456KB

  • memory/1184-213-0x000002521D340000-0x000002521D3B2000-memory.dmp

    Filesize

    456KB

  • memory/1184-186-0x000002521D340000-0x000002521D3B2000-memory.dmp

    Filesize

    456KB

  • memory/1316-208-0x0000018C61F60000-0x0000018C61FD2000-memory.dmp

    Filesize

    456KB

  • memory/1316-173-0x0000018C61F60000-0x0000018C61FD2000-memory.dmp

    Filesize

    456KB

  • memory/1356-215-0x000002419A020000-0x000002419A092000-memory.dmp

    Filesize

    456KB

  • memory/1356-192-0x000002419A020000-0x000002419A092000-memory.dmp

    Filesize

    456KB

  • memory/1860-211-0x0000025C1B5D0000-0x0000025C1B642000-memory.dmp

    Filesize

    456KB

  • memory/1860-180-0x0000025C1B5D0000-0x0000025C1B642000-memory.dmp

    Filesize

    456KB

  • memory/2276-149-0x000001FEE6760000-0x000001FEE67D2000-memory.dmp

    Filesize

    456KB

  • memory/2276-198-0x000001FEE6760000-0x000001FEE67D2000-memory.dmp

    Filesize

    456KB

  • memory/2336-201-0x0000022147540000-0x00000221475B2000-memory.dmp

    Filesize

    456KB

  • memory/2336-155-0x0000022147540000-0x00000221475B2000-memory.dmp

    Filesize

    456KB

  • memory/2412-227-0x000001D7A0F40000-0x000001D7A0FB2000-memory.dmp

    Filesize

    456KB

  • memory/2412-202-0x000001D7A0F40000-0x000001D7A0FB2000-memory.dmp

    Filesize

    456KB

  • memory/2432-228-0x0000028FD3FA0000-0x0000028FD4012000-memory.dmp

    Filesize

    456KB

  • memory/2432-217-0x0000028FD3FA0000-0x0000028FD4012000-memory.dmp

    Filesize

    456KB

  • memory/2692-137-0x00000209AEC70000-0x00000209AECE2000-memory.dmp

    Filesize

    456KB

  • memory/2692-130-0x00000209AE250000-0x00000209AE29D000-memory.dmp

    Filesize

    308KB

  • memory/2692-128-0x00000209AEC70000-0x00000209AECE2000-memory.dmp

    Filesize

    456KB

  • memory/2692-125-0x00000209AE250000-0x00000209AE29D000-memory.dmp

    Filesize

    308KB

  • memory/3096-134-0x0000000004670000-0x0000000004781000-memory.dmp

    Filesize

    1.1MB

  • memory/3096-223-0x0000000004790000-0x00000000047EE000-memory.dmp

    Filesize

    376KB

  • memory/3096-135-0x0000000004790000-0x00000000047EE000-memory.dmp

    Filesize

    376KB

  • memory/4596-195-0x000001838A9D0000-0x000001838AA42000-memory.dmp

    Filesize

    456KB

  • memory/4596-136-0x000001838A9D0000-0x000001838AA42000-memory.dmp

    Filesize

    456KB

  • memory/4596-146-0x000001838A9D0000-0x000001838AA42000-memory.dmp

    Filesize

    456KB

  • memory/4596-231-0x000001838A9D0000-0x000001838AA42000-memory.dmp

    Filesize

    456KB