Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    06-03-2023 05:34

General

  • Target

    54151922b3a7a1f16e1b10356da10b8293b6ca897fed9d48ffeb3d2eae2685cd.exe

  • Size

    308KB

  • MD5

    e7f609df5c0fcdc581a69ed69aa3c4a1

  • SHA1

    345ac5a24438b8edb695d32bde79502023e09e31

  • SHA256

    54151922b3a7a1f16e1b10356da10b8293b6ca897fed9d48ffeb3d2eae2685cd

  • SHA512

    76772a9020ad88203d54ed5d792929957145057da17eff9f6b07c292fd76c0aa120b3ea8ab23c6f7a5c9a802422adf906294ace90a53d90eeafb86a92bae008c

  • SSDEEP

    6144:bOsY+HgEiTA14Xn0Ti8v1bbFgXIQdjrfzNt1IEP3:i814Xn0Ti8tbJyIQdjrfzuEP3

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 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 6 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 16 IoCs
  • Modifies registry class 22 IoCs
  • Script User-Agent 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 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 ProfSvc
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1152
  • 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:2752
    • 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:1956
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s WpnService
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2532
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2404
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2264
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
    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:1860
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s UserManager
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1392
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s SENS
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1368
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Themes
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1168
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Schedule
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1092
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:456
  • C:\Users\Admin\AppData\Local\Temp\54151922b3a7a1f16e1b10356da10b8293b6ca897fed9d48ffeb3d2eae2685cd.exe
    "C:\Users\Admin\AppData\Local\Temp\54151922b3a7a1f16e1b10356da10b8293b6ca897fed9d48ffeb3d2eae2685cd.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3796
    • C:\Users\Admin\AppData\Local\Temp\54151922b3a7a1f16e1b10356da10b8293b6ca897fed9d48ffeb3d2eae2685cd.exe
      "C:\Users\Admin\AppData\Local\Temp\54151922b3a7a1f16e1b10356da10b8293b6ca897fed9d48ffeb3d2eae2685cd.exe" -h
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:3464
  • 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:1832
    • 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:3580

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

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

    557KB

    MD5

    1bd81dc243577b6a0c7f93f6bd9ae40b

    SHA1

    9d4e908b53e52c5216ea7746d2e1b33abea9bc1c

    SHA256

    3b667512e2dc899bc4e0d92628a981b4487b9423c6ae3804893a30c67a2de21c

    SHA512

    e7e647733b88c78b8bb6c1951780b2627e2b0b66dc2b29d257f2925d837936bd12eaa56b43c7d59ec663e81fa31ec50f4767de8ab1441c645c0890aec79a8d10

  • 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/456-185-0x000001DD6C5D0000-0x000001DD6C642000-memory.dmp
    Filesize

    456KB

  • memory/456-139-0x000001DD6C5D0000-0x000001DD6C642000-memory.dmp
    Filesize

    456KB

  • memory/1092-169-0x0000023960070000-0x00000239600E2000-memory.dmp
    Filesize

    456KB

  • memory/1092-195-0x0000023960070000-0x00000239600E2000-memory.dmp
    Filesize

    456KB

  • memory/1152-192-0x000002E845C70000-0x000002E845CE2000-memory.dmp
    Filesize

    456KB

  • memory/1152-163-0x000002E845C70000-0x000002E845CE2000-memory.dmp
    Filesize

    456KB

  • memory/1168-224-0x000002C4D6F60000-0x000002C4D6FD2000-memory.dmp
    Filesize

    456KB

  • memory/1168-194-0x000002C4D6F60000-0x000002C4D6FD2000-memory.dmp
    Filesize

    456KB

  • memory/1368-198-0x000001AEF02D0000-0x000001AEF0342000-memory.dmp
    Filesize

    456KB

  • memory/1368-175-0x000001AEF02D0000-0x000001AEF0342000-memory.dmp
    Filesize

    456KB

  • memory/1392-204-0x0000020297A30000-0x0000020297AA2000-memory.dmp
    Filesize

    456KB

  • memory/1392-225-0x0000020297A30000-0x0000020297AA2000-memory.dmp
    Filesize

    456KB

  • memory/1860-199-0x0000018488720000-0x0000018488792000-memory.dmp
    Filesize

    456KB

  • memory/1860-181-0x0000018488720000-0x0000018488792000-memory.dmp
    Filesize

    456KB

  • memory/1956-248-0x0000024CE3230000-0x0000024CE3250000-memory.dmp
    Filesize

    128KB

  • memory/1956-231-0x0000024CE19D0000-0x0000024CE1A42000-memory.dmp
    Filesize

    456KB

  • memory/1956-263-0x0000024CE4000000-0x0000024CE410A000-memory.dmp
    Filesize

    1.0MB

  • memory/1956-249-0x0000024CE33B0000-0x0000024CE33CB000-memory.dmp
    Filesize

    108KB

  • memory/1956-187-0x0000024CE19D0000-0x0000024CE1A42000-memory.dmp
    Filesize

    456KB

  • memory/1956-151-0x0000024CE19D0000-0x0000024CE1A42000-memory.dmp
    Filesize

    456KB

  • memory/1956-246-0x0000024CE4000000-0x0000024CE410A000-memory.dmp
    Filesize

    1.0MB

  • memory/1956-141-0x0000024CE19D0000-0x0000024CE1A42000-memory.dmp
    Filesize

    456KB

  • memory/1956-244-0x0000024CE3200000-0x0000024CE321B000-memory.dmp
    Filesize

    108KB

  • memory/2240-188-0x000002382A650000-0x000002382A6C2000-memory.dmp
    Filesize

    456KB

  • memory/2240-149-0x000002382A650000-0x000002382A6C2000-memory.dmp
    Filesize

    456KB

  • memory/2264-156-0x000001B17FA40000-0x000001B17FAB2000-memory.dmp
    Filesize

    456KB

  • memory/2264-190-0x000001B17FA40000-0x000001B17FAB2000-memory.dmp
    Filesize

    456KB

  • memory/2404-212-0x000001BA63D50000-0x000001BA63DC2000-memory.dmp
    Filesize

    456KB

  • memory/2404-226-0x000001BA63D50000-0x000001BA63DC2000-memory.dmp
    Filesize

    456KB

  • memory/2532-227-0x00000205C3410000-0x00000205C3482000-memory.dmp
    Filesize

    456KB

  • memory/2532-219-0x00000205C3410000-0x00000205C3482000-memory.dmp
    Filesize

    456KB

  • memory/2752-132-0x00000221AADA0000-0x00000221AADED000-memory.dmp
    Filesize

    308KB

  • memory/2752-140-0x00000221AB770000-0x00000221AB7E2000-memory.dmp
    Filesize

    456KB

  • memory/2752-127-0x00000221AADA0000-0x00000221AADED000-memory.dmp
    Filesize

    308KB

  • memory/2752-130-0x00000221AB770000-0x00000221AB7E2000-memory.dmp
    Filesize

    456KB

  • memory/3580-137-0x0000000004C00000-0x0000000004C5E000-memory.dmp
    Filesize

    376KB

  • memory/3580-223-0x0000000004C00000-0x0000000004C5E000-memory.dmp
    Filesize

    376KB

  • memory/3580-126-0x0000000004AA0000-0x0000000004BA8000-memory.dmp
    Filesize

    1.0MB