Analysis

  • max time kernel
    300s
  • max time network
    179s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    27-02-2023 04:58

General

  • Target

    4ca6df75008045a45e441869a4389b4ef620df9f89cd5f05fd329d0f9987c822.exe

  • Size

    312KB

  • MD5

    eb7d2add3fe15ee8524a07c2c75bedb9

  • SHA1

    d13c52cd6709f416aefe338922c77bae33a85f31

  • SHA256

    4ca6df75008045a45e441869a4389b4ef620df9f89cd5f05fd329d0f9987c822

  • SHA512

    484f1172d1c0c240a8b3cb7412f41cafc25a6473256d96da4a2ed7657a7606e1a2ae202b4db43e5db180dc3325c3211b524f2d52389bd52452c5f09e2d194701

  • SSDEEP

    6144:E4PWLN3m+XeeqeO0UQeQ8KbLVHqAQg5jIQshEPn:6aeqeO0UQB8KFHqAYhEPn

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 8 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:1128
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s SENS
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1356
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s UserManager
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1308
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Themes
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1204
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Schedule
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:872
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1016
  • 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:2728
    • 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:4820
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s WpnService
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2376
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2364
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2292
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2228
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1772
  • C:\Users\Admin\AppData\Local\Temp\4ca6df75008045a45e441869a4389b4ef620df9f89cd5f05fd329d0f9987c822.exe
    "C:\Users\Admin\AppData\Local\Temp\4ca6df75008045a45e441869a4389b4ef620df9f89cd5f05fd329d0f9987c822.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4140
    • C:\Users\Admin\AppData\Local\Temp\4ca6df75008045a45e441869a4389b4ef620df9f89cd5f05fd329d0f9987c822.exe
      "C:\Users\Admin\AppData\Local\Temp\4ca6df75008045a45e441869a4389b4ef620df9f89cd5f05fd329d0f9987c822.exe" -h
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:4616
  • 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:2704
    • 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:2760

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    557KB

    MD5

    30d5f615722d12fdda4f378048221909

    SHA1

    e94e3e3a6fae8b29f0f80128761ad1b69304a7eb

    SHA256

    b7cb464cd0c61026ec38d89c0a041393bc9369e217303677551eec65a09d2628

    SHA512

    a561a224d7228ec531a966c7dbd6bc88138e2f4a1c8112e5950644f69bf3a43b1e87e03bc1b4fd5e9ca071b5a9353b18697573404602ccd51f2946faf95144c2

  • 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/872-167-0x000001B40CF50000-0x000001B40CFC2000-memory.dmp

    Filesize

    456KB

  • memory/872-212-0x000001B40CF50000-0x000001B40CFC2000-memory.dmp

    Filesize

    456KB

  • memory/1016-132-0x00000232A5E70000-0x00000232A5EE2000-memory.dmp

    Filesize

    456KB

  • memory/1016-154-0x00000232A5E70000-0x00000232A5EE2000-memory.dmp

    Filesize

    456KB

  • memory/1128-160-0x0000023C8D0C0000-0x0000023C8D132000-memory.dmp

    Filesize

    456KB

  • memory/1128-211-0x0000023C8D0C0000-0x0000023C8D132000-memory.dmp

    Filesize

    456KB

  • memory/1204-215-0x000001BD66280000-0x000001BD662F2000-memory.dmp

    Filesize

    456KB

  • memory/1204-186-0x000001BD66280000-0x000001BD662F2000-memory.dmp

    Filesize

    456KB

  • memory/1308-193-0x00000163ED170000-0x00000163ED1E2000-memory.dmp

    Filesize

    456KB

  • memory/1308-217-0x00000163ED170000-0x00000163ED1E2000-memory.dmp

    Filesize

    456KB

  • memory/1356-213-0x000001B8E37A0000-0x000001B8E3812000-memory.dmp

    Filesize

    456KB

  • memory/1356-173-0x000001B8E37A0000-0x000001B8E3812000-memory.dmp

    Filesize

    456KB

  • memory/1772-214-0x0000020280900000-0x0000020280972000-memory.dmp

    Filesize

    456KB

  • memory/1772-180-0x0000020280900000-0x0000020280972000-memory.dmp

    Filesize

    456KB

  • memory/2228-157-0x000002801BB00000-0x000002801BB72000-memory.dmp

    Filesize

    456KB

  • memory/2228-141-0x000002801BB00000-0x000002801BB72000-memory.dmp

    Filesize

    456KB

  • memory/2292-149-0x000001BBE4F20000-0x000001BBE4F92000-memory.dmp

    Filesize

    456KB

  • memory/2292-209-0x000001BBE4F20000-0x000001BBE4F92000-memory.dmp

    Filesize

    456KB

  • memory/2364-199-0x000002AFA8FA0000-0x000002AFA9012000-memory.dmp

    Filesize

    456KB

  • memory/2364-219-0x000002AFA8FA0000-0x000002AFA9012000-memory.dmp

    Filesize

    456KB

  • memory/2376-221-0x000001BCDD8A0000-0x000001BCDD912000-memory.dmp

    Filesize

    456KB

  • memory/2376-205-0x000001BCDD8A0000-0x000001BCDD912000-memory.dmp

    Filesize

    456KB

  • memory/2728-121-0x0000021B67DE0000-0x0000021B67E2D000-memory.dmp

    Filesize

    308KB

  • memory/2728-152-0x0000021B687D0000-0x0000021B68842000-memory.dmp

    Filesize

    456KB

  • memory/2728-126-0x0000021B67DE0000-0x0000021B67E2D000-memory.dmp

    Filesize

    308KB

  • memory/2728-124-0x0000021B687D0000-0x0000021B68842000-memory.dmp

    Filesize

    456KB

  • memory/2760-150-0x0000000004C30000-0x0000000004C8E000-memory.dmp

    Filesize

    376KB

  • memory/2760-148-0x0000000004CD0000-0x0000000004DE1000-memory.dmp

    Filesize

    1.1MB

  • memory/2760-208-0x0000000004C30000-0x0000000004C8E000-memory.dmp

    Filesize

    376KB

  • memory/4820-142-0x0000026F00250000-0x0000026F002C2000-memory.dmp

    Filesize

    456KB

  • memory/4820-263-0x0000026F01F60000-0x0000026F01F80000-memory.dmp

    Filesize

    128KB

  • memory/4820-133-0x0000026F00250000-0x0000026F002C2000-memory.dmp

    Filesize

    456KB

  • memory/4820-226-0x0000026F00250000-0x0000026F002C2000-memory.dmp

    Filesize

    456KB

  • memory/4820-236-0x0000026F01F40000-0x0000026F01F5B000-memory.dmp

    Filesize

    108KB

  • memory/4820-237-0x0000026F02800000-0x0000026F0290A000-memory.dmp

    Filesize

    1.0MB

  • memory/4820-238-0x0000026F01F60000-0x0000026F01F80000-memory.dmp

    Filesize

    128KB

  • memory/4820-240-0x0000026F01FC0000-0x0000026F01FDB000-memory.dmp

    Filesize

    108KB

  • memory/4820-261-0x0000026F01F40000-0x0000026F01F5B000-memory.dmp

    Filesize

    108KB

  • memory/4820-262-0x0000026F02800000-0x0000026F0290A000-memory.dmp

    Filesize

    1.0MB

  • memory/4820-156-0x0000026F00250000-0x0000026F002C2000-memory.dmp

    Filesize

    456KB