Analysis

  • max time kernel
    149s
  • max time network
    143s
  • 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 05:33

General

  • Target

    32e60467041b40146d87fc1c8c734f60f7e3763820e0c2a852a801c8afd1c7ab.exe

  • Size

    308KB

  • MD5

    bf48a5cd9169a5826521a8a33b21adee

  • SHA1

    b769421d41836cb6fb1bfc624207ed4f2eac57b5

  • SHA256

    32e60467041b40146d87fc1c8c734f60f7e3763820e0c2a852a801c8afd1c7ab

  • SHA512

    a40ab338563540aaac258b62f29195e56432d137ce4052aee24cec4f01e4c115f116392f7657b9a9dbe2f0b05ff79818520a417ec3608892cbd68c69e9a25a71

  • SSDEEP

    6144:bOsY+HgEiTA14Xn0Ti8v1bbFgXIQdjrfzNt1KEP3:i814Xn0Ti8tbJyIQdjrfzQEP3

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:1020
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Schedule
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1084
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Themes
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1260
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1216
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s UserManager
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1412
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s SENS
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1492
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1932
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2288
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2328
  • 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:2480
    • 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:1716
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s WpnService
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2596
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2572
  • C:\Users\Admin\AppData\Local\Temp\32e60467041b40146d87fc1c8c734f60f7e3763820e0c2a852a801c8afd1c7ab.exe
    "C:\Users\Admin\AppData\Local\Temp\32e60467041b40146d87fc1c8c734f60f7e3763820e0c2a852a801c8afd1c7ab.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4124
    • C:\Users\Admin\AppData\Local\Temp\32e60467041b40146d87fc1c8c734f60f7e3763820e0c2a852a801c8afd1c7ab.exe
      "C:\Users\Admin\AppData\Local\Temp\32e60467041b40146d87fc1c8c734f60f7e3763820e0c2a852a801c8afd1c7ab.exe" -h
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:3544
  • 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:4916
    • 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:2088

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    557KB

    MD5

    558fb165f9dec4a658095e16878896e2

    SHA1

    b0813050bb1b447dbe4544696c73d7419971acf2

    SHA256

    f0c6a3d1543bfbcb7be733cf2a03a5864fcf7ea9b23897e5c0b4e84ccb78e1e4

    SHA512

    94d5a996af420078028e4fc4afb463db28d622ac2c0785fa73690d5fdf022cd5f2ddd4712bc45071e9c3da1dab0394a192066338c3ba76f51f3d12e94b37fa18

  • 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/1020-169-0x000001B955E70000-0x000001B955EE2000-memory.dmp

    Filesize

    456KB

  • memory/1020-132-0x000001B955E70000-0x000001B955EE2000-memory.dmp

    Filesize

    456KB

  • memory/1084-178-0x00000298E9D40000-0x00000298E9DB2000-memory.dmp

    Filesize

    456KB

  • memory/1084-160-0x00000298E9D40000-0x00000298E9DB2000-memory.dmp

    Filesize

    456KB

  • memory/1216-154-0x000001A918660000-0x000001A9186D2000-memory.dmp

    Filesize

    456KB

  • memory/1216-177-0x000001A918660000-0x000001A9186D2000-memory.dmp

    Filesize

    456KB

  • memory/1260-217-0x000001F32BCB0000-0x000001F32BD22000-memory.dmp

    Filesize

    456KB

  • memory/1260-190-0x000001F32BCB0000-0x000001F32BD22000-memory.dmp

    Filesize

    456KB

  • memory/1412-218-0x000001D88E860000-0x000001D88E8D2000-memory.dmp

    Filesize

    456KB

  • memory/1412-198-0x000001D88E860000-0x000001D88E8D2000-memory.dmp

    Filesize

    456KB

  • memory/1492-171-0x000001F939670000-0x000001F9396E2000-memory.dmp

    Filesize

    456KB

  • memory/1492-214-0x000001F939670000-0x000001F9396E2000-memory.dmp

    Filesize

    456KB

  • memory/1716-226-0x000002D6E9900000-0x000002D6E9972000-memory.dmp

    Filesize

    456KB

  • memory/1716-134-0x000002D6E9900000-0x000002D6E9972000-memory.dmp

    Filesize

    456KB

  • memory/1716-261-0x000002D6EB1E0000-0x000002D6EB1FB000-memory.dmp

    Filesize

    108KB

  • memory/1716-170-0x000002D6E9900000-0x000002D6E9972000-memory.dmp

    Filesize

    456KB

  • memory/1716-260-0x000002D6EB1A0000-0x000002D6EB1C0000-memory.dmp

    Filesize

    128KB

  • memory/1716-259-0x000002D6EBE90000-0x000002D6EBF9A000-memory.dmp

    Filesize

    1.0MB

  • memory/1716-258-0x000002D6EB160000-0x000002D6EB17B000-memory.dmp

    Filesize

    108KB

  • memory/1716-239-0x000002D6EB1E0000-0x000002D6EB1FB000-memory.dmp

    Filesize

    108KB

  • memory/1716-238-0x000002D6EB1A0000-0x000002D6EB1C0000-memory.dmp

    Filesize

    128KB

  • memory/1716-237-0x000002D6EBE90000-0x000002D6EBF9A000-memory.dmp

    Filesize

    1.0MB

  • memory/1716-236-0x000002D6EB160000-0x000002D6EB17B000-memory.dmp

    Filesize

    108KB

  • memory/1716-151-0x000002D6E9900000-0x000002D6E9972000-memory.dmp

    Filesize

    456KB

  • memory/1932-183-0x000001F4C5470000-0x000001F4C54E2000-memory.dmp

    Filesize

    456KB

  • memory/1932-216-0x000001F4C5470000-0x000001F4C54E2000-memory.dmp

    Filesize

    456KB

  • memory/2088-215-0x0000000000B40000-0x0000000000B9E000-memory.dmp

    Filesize

    376KB

  • memory/2088-165-0x0000000000B40000-0x0000000000B9E000-memory.dmp

    Filesize

    376KB

  • memory/2088-164-0x0000000000C50000-0x0000000000D5B000-memory.dmp

    Filesize

    1.0MB

  • memory/2288-141-0x00000195F6480000-0x00000195F64F2000-memory.dmp

    Filesize

    456KB

  • memory/2288-172-0x00000195F6480000-0x00000195F64F2000-memory.dmp

    Filesize

    456KB

  • memory/2328-147-0x000001A5B7130000-0x000001A5B71A2000-memory.dmp

    Filesize

    456KB

  • memory/2328-174-0x000001A5B7130000-0x000001A5B71A2000-memory.dmp

    Filesize

    456KB

  • memory/2480-126-0x0000027B05B10000-0x0000027B05B5D000-memory.dmp

    Filesize

    308KB

  • memory/2480-124-0x0000027B05D00000-0x0000027B05D72000-memory.dmp

    Filesize

    456KB

  • memory/2480-121-0x0000027B05B10000-0x0000027B05B5D000-memory.dmp

    Filesize

    308KB

  • memory/2480-166-0x0000027B05D00000-0x0000027B05D72000-memory.dmp

    Filesize

    456KB

  • memory/2572-220-0x000001F9B9940000-0x000001F9B99B2000-memory.dmp

    Filesize

    456KB

  • memory/2572-205-0x000001F9B9940000-0x000001F9B99B2000-memory.dmp

    Filesize

    456KB

  • memory/2596-221-0x000001C2FDD00000-0x000001C2FDD72000-memory.dmp

    Filesize

    456KB

  • memory/2596-211-0x000001C2FDD00000-0x000001C2FDD72000-memory.dmp

    Filesize

    456KB