Analysis

  • max time kernel
    144s
  • 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 08:37

General

  • Target

    c328b0f3913a4eaa09445cd341c18e03f4aa4dc83479c46678241c8e5c884b29.exe

  • Size

    880KB

  • MD5

    9e14dec995887863a704ab32453fa5f6

  • SHA1

    b3552d0e99bde52f2a1041040d741919397b2c35

  • SHA256

    c328b0f3913a4eaa09445cd341c18e03f4aa4dc83479c46678241c8e5c884b29

  • SHA512

    9b96074fabd0bae4a87e258f2f1427e73f7b8cecf14d9ea216862c1b80c3d3f90afc2c46ca50b69ac4e18d08af15756787737020cdd24c6e7619e26d35b99fbc

  • SSDEEP

    6144:LQuiA1RTz/cYja2ieb5YbF5R+Jn8xH97r7Fh1d43wUmDm:nz/9ja2ieFYp5R+I7zY

Malware Config

Signatures

  • Detects PseudoManuscrypt payload 29 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 WpnService
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2524
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2508
  • 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:2416
    • 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:3108
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2256
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2240
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1896
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s SENS
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1472
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s UserManager
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1364
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Themes
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1292
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1108
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Schedule
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1044
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:400
  • C:\Users\Admin\AppData\Local\Temp\c328b0f3913a4eaa09445cd341c18e03f4aa4dc83479c46678241c8e5c884b29.exe
    "C:\Users\Admin\AppData\Local\Temp\c328b0f3913a4eaa09445cd341c18e03f4aa4dc83479c46678241c8e5c884b29.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3128
    • C:\Users\Admin\AppData\Local\Temp\c328b0f3913a4eaa09445cd341c18e03f4aa4dc83479c46678241c8e5c884b29.exe
      "C:\Users\Admin\AppData\Local\Temp\c328b0f3913a4eaa09445cd341c18e03f4aa4dc83479c46678241c8e5c884b29.exe" -h
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:1816
  • 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:2160
    • 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:2628

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    557KB

    MD5

    ee5d452cc4ee71e1f544582bf6fca143

    SHA1

    a193952075b2b4a83759098754e814a931b8ba90

    SHA256

    f5cb9476e4b5576bb94eae1d278093b6470b0238226d4c05ec8c76747d57cbfe

    SHA512

    7a935ae3df65b949c5e7f1ed93bd2173165ef4e347ceb5879725fbb995aedeef853b5b1dc4c4155d423f34d004f8a0df59258cefdad5f49e617d0a74764c896b

  • 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/400-153-0x000001E5BDCC0000-0x000001E5BDD32000-memory.dmp

    Filesize

    456KB

  • memory/400-137-0x000001E5BDCC0000-0x000001E5BDD32000-memory.dmp

    Filesize

    456KB

  • memory/1044-172-0x000001E107AB0000-0x000001E107B22000-memory.dmp

    Filesize

    456KB

  • memory/1044-197-0x000001E107AB0000-0x000001E107B22000-memory.dmp

    Filesize

    456KB

  • memory/1108-165-0x0000021259DD0000-0x0000021259E42000-memory.dmp

    Filesize

    456KB

  • memory/1108-195-0x0000021259DD0000-0x0000021259E42000-memory.dmp

    Filesize

    456KB

  • memory/1292-191-0x00000293BA080000-0x00000293BA0F2000-memory.dmp

    Filesize

    456KB

  • memory/1292-202-0x00000293BA080000-0x00000293BA0F2000-memory.dmp

    Filesize

    456KB

  • memory/1364-204-0x000001B23ED70000-0x000001B23EDE2000-memory.dmp

    Filesize

    456KB

  • memory/1364-225-0x000001B23ED70000-0x000001B23EDE2000-memory.dmp

    Filesize

    456KB

  • memory/1472-178-0x0000015254AD0000-0x0000015254B42000-memory.dmp

    Filesize

    456KB

  • memory/1472-198-0x0000015254AD0000-0x0000015254B42000-memory.dmp

    Filesize

    456KB

  • memory/1896-184-0x00000276325C0000-0x0000027632632000-memory.dmp

    Filesize

    456KB

  • memory/1896-200-0x00000276325C0000-0x0000027632632000-memory.dmp

    Filesize

    456KB

  • memory/2240-159-0x00000153A8C40000-0x00000153A8CB2000-memory.dmp

    Filesize

    456KB

  • memory/2240-194-0x00000153A8C40000-0x00000153A8CB2000-memory.dmp

    Filesize

    456KB

  • memory/2256-149-0x0000017B1F200000-0x0000017B1F272000-memory.dmp

    Filesize

    456KB

  • memory/2256-187-0x0000017B1F200000-0x0000017B1F272000-memory.dmp

    Filesize

    456KB

  • memory/2416-151-0x00000181CE960000-0x00000181CE9D2000-memory.dmp

    Filesize

    456KB

  • memory/2416-126-0x00000181CE100000-0x00000181CE14D000-memory.dmp

    Filesize

    308KB

  • memory/2416-129-0x00000181CE960000-0x00000181CE9D2000-memory.dmp

    Filesize

    456KB

  • memory/2416-131-0x00000181CE100000-0x00000181CE14D000-memory.dmp

    Filesize

    308KB

  • memory/2508-214-0x000001D1B1950000-0x000001D1B19C2000-memory.dmp

    Filesize

    456KB

  • memory/2508-226-0x000001D1B1950000-0x000001D1B19C2000-memory.dmp

    Filesize

    456KB

  • memory/2524-220-0x00000169DFF20000-0x00000169DFF92000-memory.dmp

    Filesize

    456KB

  • memory/2524-227-0x00000169DFF20000-0x00000169DFF92000-memory.dmp

    Filesize

    456KB

  • memory/2628-145-0x0000000000D80000-0x0000000000E91000-memory.dmp

    Filesize

    1.1MB

  • memory/2628-148-0x0000000000880000-0x00000000008DE000-memory.dmp

    Filesize

    376KB

  • memory/2628-224-0x0000000000880000-0x00000000008DE000-memory.dmp

    Filesize

    376KB

  • memory/3108-138-0x000001AFFEAD0000-0x000001AFFEB42000-memory.dmp

    Filesize

    456KB

  • memory/3108-154-0x000001AFFEAD0000-0x000001AFFEB42000-memory.dmp

    Filesize

    456KB

  • memory/3108-147-0x000001AFFEAD0000-0x000001AFFEB42000-memory.dmp

    Filesize

    456KB

  • memory/3108-232-0x000001AFFEAD0000-0x000001AFFEB42000-memory.dmp

    Filesize

    456KB