Analysis

  • max time kernel
    299s
  • max time network
    178s
  • 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 22:22

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 gpsvc
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:68
  • 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:4080
    • C:\Users\Admin\AppData\Local\Temp\ad716b9b395d65dca7a31117215c2adedf392162eab7beee500f8061db4785c0.exe
      "C:\Users\Admin\AppData\Local\Temp\ad716b9b395d65dca7a31117215c2adedf392162eab7beee500f8061db4785c0.exe" -h
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:4144
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s WpnService
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2476
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2456
  • 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:2400
    • 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:4552
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2224
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2216
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1844
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s SENS
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1404
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s UserManager
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1352
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Themes
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1172
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1116
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Schedule
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:832
  • C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open
    1⤵
    • Loads dropped DLL
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3108
  • 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:2104

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

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/68-136-0x0000027129000000-0x0000027129072000-memory.dmp

    Filesize

    456KB

  • memory/68-206-0x0000027129000000-0x0000027129072000-memory.dmp

    Filesize

    456KB

  • memory/832-210-0x000002D871CB0000-0x000002D871D22000-memory.dmp

    Filesize

    456KB

  • memory/832-162-0x000002D871CB0000-0x000002D871D22000-memory.dmp

    Filesize

    456KB

  • memory/1116-209-0x0000020D17770000-0x0000020D177E2000-memory.dmp

    Filesize

    456KB

  • memory/1116-156-0x0000020D17770000-0x0000020D177E2000-memory.dmp

    Filesize

    456KB

  • memory/1172-181-0x00000275ADAB0000-0x00000275ADB22000-memory.dmp

    Filesize

    456KB

  • memory/1172-213-0x00000275ADAB0000-0x00000275ADB22000-memory.dmp

    Filesize

    456KB

  • memory/1352-214-0x0000028701D70000-0x0000028701DE2000-memory.dmp

    Filesize

    456KB

  • memory/1352-187-0x0000028701D70000-0x0000028701DE2000-memory.dmp

    Filesize

    456KB

  • memory/1404-169-0x00000261BAA30000-0x00000261BAAA2000-memory.dmp

    Filesize

    456KB

  • memory/1404-211-0x00000261BAA30000-0x00000261BAAA2000-memory.dmp

    Filesize

    456KB

  • memory/1844-175-0x000001E73C140000-0x000001E73C1B2000-memory.dmp

    Filesize

    456KB

  • memory/1844-212-0x000001E73C140000-0x000001E73C1B2000-memory.dmp

    Filesize

    456KB

  • memory/2216-144-0x000002028D4A0000-0x000002028D512000-memory.dmp

    Filesize

    456KB

  • memory/2216-207-0x000002028D4A0000-0x000002028D512000-memory.dmp

    Filesize

    456KB

  • memory/2224-208-0x000001A16E660000-0x000001A16E6D2000-memory.dmp

    Filesize

    456KB

  • memory/2224-150-0x000001A16E660000-0x000001A16E6D2000-memory.dmp

    Filesize

    456KB

  • memory/2400-204-0x0000021269A00000-0x0000021269A72000-memory.dmp

    Filesize

    456KB

  • memory/2400-124-0x0000021268F60000-0x0000021268FAD000-memory.dmp

    Filesize

    308KB

  • memory/2400-127-0x0000021269A00000-0x0000021269A72000-memory.dmp

    Filesize

    456KB

  • memory/2400-129-0x0000021268F60000-0x0000021268FAD000-memory.dmp

    Filesize

    308KB

  • memory/2456-215-0x000001F2A7740000-0x000001F2A77B2000-memory.dmp

    Filesize

    456KB

  • memory/2456-193-0x000001F2A7740000-0x000001F2A77B2000-memory.dmp

    Filesize

    456KB

  • memory/2476-216-0x0000024ADB960000-0x0000024ADB9D2000-memory.dmp

    Filesize

    456KB

  • memory/2476-199-0x0000024ADB960000-0x0000024ADB9D2000-memory.dmp

    Filesize

    456KB

  • memory/3108-202-0x0000000004B8D000-0x0000000004C8E000-memory.dmp

    Filesize

    1.0MB

  • memory/3108-203-0x0000000004AB0000-0x0000000004B0E000-memory.dmp

    Filesize

    376KB

  • memory/4552-261-0x000001DC98400000-0x000001DC9850B000-memory.dmp

    Filesize

    1.0MB

  • memory/4552-165-0x000001DC95C90000-0x000001DC95D02000-memory.dmp

    Filesize

    456KB

  • memory/4552-135-0x000001DC95C90000-0x000001DC95D02000-memory.dmp

    Filesize

    456KB

  • memory/4552-229-0x000001DC95C90000-0x000001DC95D02000-memory.dmp

    Filesize

    456KB

  • memory/4552-240-0x000001DC95D70000-0x000001DC95D8B000-memory.dmp

    Filesize

    108KB

  • memory/4552-243-0x000001DC976A0000-0x000001DC976BB000-memory.dmp

    Filesize

    108KB

  • memory/4552-242-0x000001DC95D90000-0x000001DC95DB0000-memory.dmp

    Filesize

    128KB

  • memory/4552-241-0x000001DC98400000-0x000001DC9850B000-memory.dmp

    Filesize

    1.0MB

  • memory/4552-205-0x000001DC95C90000-0x000001DC95D02000-memory.dmp

    Filesize

    456KB