Analysis

  • max time kernel
    299s
  • max time network
    159s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    07-03-2023 04:52

General

  • Target

    ad716b9b395d65dca7a31117215c2adedf392162eab7beee500f8061db4785c0.exe

  • Size

    308KB

  • MD5

    6bbbf2b1e89ed9d3b1bba44fc9acec53

  • SHA1

    bb6b962ba30a55a9cbb87030bdd282223e42a48d

  • SHA256

    ad716b9b395d65dca7a31117215c2adedf392162eab7beee500f8061db4785c0

  • SHA512

    a7651ba72b4b45f3f4a7901412d1d3b41f8847fd59b15b9a61092cb9a2c4bc38aa1a2d274b549e49608e70b4ff1f4ab120a814e1fd5cffe7dd8d1a644aa737a0

  • SSDEEP

    6144:bOsY+HgEiTA14Xn0Ti8v1bbFgXIQdjrfzNt1sEP3:i814Xn0Ti8tbJyIQdjrfzCEP3

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 LanmanServer
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2188
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2512
  • 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:2580
    • 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:4700
  • 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 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:1816
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s SENS
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1440
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s UserManager
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1272
  • 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 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:892
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:64
  • C:\Users\Admin\AppData\Local\Temp\ad716b9b395d65dca7a31117215c2adedf392162eab7beee500f8061db4785c0.exe
    "C:\Users\Admin\AppData\Local\Temp\ad716b9b395d65dca7a31117215c2adedf392162eab7beee500f8061db4785c0.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1792
    • C:\Users\Admin\AppData\Local\Temp\ad716b9b395d65dca7a31117215c2adedf392162eab7beee500f8061db4785c0.exe
      "C:\Users\Admin\AppData\Local\Temp\ad716b9b395d65dca7a31117215c2adedf392162eab7beee500f8061db4785c0.exe" -h
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:2520
  • 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:4992
    • 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:4056

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/64-140-0x0000013F37000000-0x0000013F37072000-memory.dmp

    Filesize

    456KB

  • memory/64-144-0x0000013F37000000-0x0000013F37072000-memory.dmp

    Filesize

    456KB

  • memory/892-170-0x0000020286600000-0x0000020286672000-memory.dmp

    Filesize

    456KB

  • memory/892-200-0x0000020286600000-0x0000020286672000-memory.dmp

    Filesize

    456KB

  • memory/1108-198-0x000001A6A1E60000-0x000001A6A1ED2000-memory.dmp

    Filesize

    456KB

  • memory/1108-164-0x000001A6A1E60000-0x000001A6A1ED2000-memory.dmp

    Filesize

    456KB

  • memory/1204-189-0x0000017639C60000-0x0000017639CD2000-memory.dmp

    Filesize

    456KB

  • memory/1204-207-0x0000017639C60000-0x0000017639CD2000-memory.dmp

    Filesize

    456KB

  • memory/1272-199-0x000001FC684A0000-0x000001FC68512000-memory.dmp

    Filesize

    456KB

  • memory/1272-226-0x000001FC684A0000-0x000001FC68512000-memory.dmp

    Filesize

    456KB

  • memory/1440-176-0x0000024E0EBA0000-0x0000024E0EC12000-memory.dmp

    Filesize

    456KB

  • memory/1440-202-0x0000024E0EBA0000-0x0000024E0EC12000-memory.dmp

    Filesize

    456KB

  • memory/1816-182-0x000001882E730000-0x000001882E7A2000-memory.dmp

    Filesize

    456KB

  • memory/1816-205-0x000001882E730000-0x000001882E7A2000-memory.dmp

    Filesize

    456KB

  • memory/2188-195-0x0000019D746A0000-0x0000019D74712000-memory.dmp

    Filesize

    456KB

  • memory/2188-157-0x0000019D746A0000-0x0000019D74712000-memory.dmp

    Filesize

    456KB

  • memory/2228-194-0x0000020D8B170000-0x0000020D8B1E2000-memory.dmp

    Filesize

    456KB

  • memory/2228-150-0x0000020D8B170000-0x0000020D8B1E2000-memory.dmp

    Filesize

    456KB

  • memory/2512-227-0x0000016C99910000-0x0000016C99982000-memory.dmp

    Filesize

    456KB

  • memory/2512-211-0x0000016C99910000-0x0000016C99982000-memory.dmp

    Filesize

    456KB

  • memory/2524-228-0x000002B966A70000-0x000002B966AE2000-memory.dmp

    Filesize

    456KB

  • memory/2524-219-0x000002B966A70000-0x000002B966AE2000-memory.dmp

    Filesize

    456KB

  • memory/2580-126-0x0000026348990000-0x00000263489DD000-memory.dmp

    Filesize

    308KB

  • memory/2580-142-0x0000026349110000-0x0000026349182000-memory.dmp

    Filesize

    456KB

  • memory/2580-131-0x0000026348990000-0x00000263489DD000-memory.dmp

    Filesize

    308KB

  • memory/2580-129-0x0000026349110000-0x0000026349182000-memory.dmp

    Filesize

    456KB

  • memory/4056-138-0x0000000000B60000-0x0000000000BBE000-memory.dmp

    Filesize

    376KB

  • memory/4056-133-0x0000000000C00000-0x0000000000D0A000-memory.dmp

    Filesize

    1.0MB

  • memory/4056-224-0x0000000000B60000-0x0000000000BBE000-memory.dmp

    Filesize

    376KB

  • memory/4700-139-0x000001A545300000-0x000001A545372000-memory.dmp

    Filesize

    456KB

  • memory/4700-192-0x000001A545300000-0x000001A545372000-memory.dmp

    Filesize

    456KB

  • memory/4700-153-0x000001A545300000-0x000001A545372000-memory.dmp

    Filesize

    456KB

  • memory/4700-231-0x000001A545300000-0x000001A545372000-memory.dmp

    Filesize

    456KB

  • memory/4700-242-0x000001A547900000-0x000001A547A0B000-memory.dmp

    Filesize

    1.0MB

  • memory/4700-241-0x000001A546B20000-0x000001A546B3B000-memory.dmp

    Filesize

    108KB

  • memory/4700-243-0x000001A546B60000-0x000001A546B80000-memory.dmp

    Filesize

    128KB

  • memory/4700-246-0x000001A546B90000-0x000001A546BAB000-memory.dmp

    Filesize

    108KB

  • memory/4700-264-0x000001A546B20000-0x000001A546B3B000-memory.dmp

    Filesize

    108KB

  • memory/4700-265-0x000001A547900000-0x000001A547A0B000-memory.dmp

    Filesize

    1.0MB

  • memory/4700-266-0x000001A546B60000-0x000001A546B80000-memory.dmp

    Filesize

    128KB

  • memory/4700-267-0x000001A546B90000-0x000001A546BAB000-memory.dmp

    Filesize

    108KB