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
    10-03-2023 06:51

General

  • Target

    6aea187ca91ea68222b4e650e2b4baa46ba11252f74763a2d2edec2924a98f10.exe

  • Size

    328KB

  • MD5

    0b39012e51e6d52ddc49dd9676ba9920

  • SHA1

    7e329120d82c58a5f2ccae98eb78d749f1095ff4

  • SHA256

    6aea187ca91ea68222b4e650e2b4baa46ba11252f74763a2d2edec2924a98f10

  • SHA512

    8d13528c02f727d6c15257050657f702622fdbc7836f0b01eda8f48edbe2aa2bb4f8dceb3652f9adead9774f3387a6bba20f95b988dd9fee642ddba5bd457a0c

  • SSDEEP

    6144:evSBanJK/5kPas8N0HEAAf1vbViarAWbd33uEPT:evjas8uHEAAtvBpkLEPT

Malware Config

Signatures

  • Detects PseudoManuscrypt payload 27 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 4 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 64 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 SENS
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1388
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1852
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2752
  • 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:2832
    • 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:4440
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s WpnService
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2776
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2456
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2432
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s UserManager
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1396
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Themes
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1200
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1112
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Schedule
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1036
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:412
  • C:\Users\Admin\AppData\Local\Temp\6aea187ca91ea68222b4e650e2b4baa46ba11252f74763a2d2edec2924a98f10.exe
    "C:\Users\Admin\AppData\Local\Temp\6aea187ca91ea68222b4e650e2b4baa46ba11252f74763a2d2edec2924a98f10.exe"
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2396
    • C:\Users\Admin\AppData\Local\Temp\6aea187ca91ea68222b4e650e2b4baa46ba11252f74763a2d2edec2924a98f10.exe
      "C:\Users\Admin\AppData\Local\Temp\6aea187ca91ea68222b4e650e2b4baa46ba11252f74763a2d2edec2924a98f10.exe" -h
      2⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:2784
  • 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:3972
    • 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:4496

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    557KB

    MD5

    b15c9612f747a2c7d6c429275c853b23

    SHA1

    46b5013dcc6677feabafb3c35d8aec6e79e1e6d3

    SHA256

    07b7dbc6e80247cee12695bc386079435ec90d0228f799ff884330b9f4e3c2d5

    SHA512

    2f70c8c18434e7a7e1475acda04ba2d3e13fd20c73ee14ff28eda50394898333e8c7067bea69cca28cff1226cdf050db55df2bcd629fb82b9f0535a505d07305

  • 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/412-185-0x0000025DD67B0000-0x0000025DD6822000-memory.dmp

    Filesize

    456KB

  • memory/412-137-0x0000025DD67B0000-0x0000025DD6822000-memory.dmp

    Filesize

    456KB

  • memory/1036-168-0x000001B5046B0000-0x000001B504722000-memory.dmp

    Filesize

    456KB

  • memory/1036-196-0x000001B5046B0000-0x000001B504722000-memory.dmp

    Filesize

    456KB

  • memory/1112-195-0x00000201A2040000-0x00000201A20B2000-memory.dmp

    Filesize

    456KB

  • memory/1112-162-0x00000201A2040000-0x00000201A20B2000-memory.dmp

    Filesize

    456KB

  • memory/1200-188-0x0000013D64540000-0x0000013D645B2000-memory.dmp

    Filesize

    456KB

  • memory/1200-204-0x0000013D64540000-0x0000013D645B2000-memory.dmp

    Filesize

    456KB

  • memory/1388-199-0x000001FC95700000-0x000001FC95772000-memory.dmp

    Filesize

    456KB

  • memory/1388-175-0x000001FC95700000-0x000001FC95772000-memory.dmp

    Filesize

    456KB

  • memory/1396-198-0x0000018FC0820000-0x0000018FC0892000-memory.dmp

    Filesize

    456KB

  • memory/1396-224-0x0000018FC0820000-0x0000018FC0892000-memory.dmp

    Filesize

    456KB

  • memory/1852-181-0x0000028844510000-0x0000028844582000-memory.dmp

    Filesize

    456KB

  • memory/1852-201-0x0000028844510000-0x0000028844582000-memory.dmp

    Filesize

    456KB

  • memory/2432-192-0x000001C8E4910000-0x000001C8E4982000-memory.dmp

    Filesize

    456KB

  • memory/2432-150-0x000001C8E4910000-0x000001C8E4982000-memory.dmp

    Filesize

    456KB

  • memory/2456-156-0x00000258CB820000-0x00000258CB892000-memory.dmp

    Filesize

    456KB

  • memory/2456-193-0x00000258CB820000-0x00000258CB892000-memory.dmp

    Filesize

    456KB

  • memory/2752-208-0x000001956D930000-0x000001956D9A2000-memory.dmp

    Filesize

    456KB

  • memory/2752-225-0x000001956D930000-0x000001956D9A2000-memory.dmp

    Filesize

    456KB

  • memory/2776-226-0x0000015F45B70000-0x0000015F45BE2000-memory.dmp

    Filesize

    456KB

  • memory/2776-215-0x0000015F45B70000-0x0000015F45BE2000-memory.dmp

    Filesize

    456KB

  • memory/2832-143-0x000002C563130000-0x000002C5631A2000-memory.dmp

    Filesize

    456KB

  • memory/2832-131-0x000002C563060000-0x000002C5630AD000-memory.dmp

    Filesize

    308KB

  • memory/2832-129-0x000002C563130000-0x000002C5631A2000-memory.dmp

    Filesize

    456KB

  • memory/2832-126-0x000002C563060000-0x000002C5630AD000-memory.dmp

    Filesize

    308KB

  • memory/4440-246-0x0000019618500000-0x000001961860B000-memory.dmp

    Filesize

    1.0MB

  • memory/4440-139-0x0000019615ED0000-0x0000019615F42000-memory.dmp

    Filesize

    456KB

  • memory/4440-148-0x0000019615ED0000-0x0000019615F42000-memory.dmp

    Filesize

    456KB

  • memory/4440-229-0x0000019615ED0000-0x0000019615F42000-memory.dmp

    Filesize

    456KB

  • memory/4440-245-0x00000196176F0000-0x000001961770B000-memory.dmp

    Filesize

    108KB

  • memory/4440-247-0x0000019617710000-0x0000019617730000-memory.dmp

    Filesize

    128KB

  • memory/4440-248-0x0000019617750000-0x000001961776B000-memory.dmp

    Filesize

    108KB

  • memory/4440-258-0x0000019618500000-0x000001961860B000-memory.dmp

    Filesize

    1.0MB

  • memory/4496-220-0x0000000004690000-0x00000000046EE000-memory.dmp

    Filesize

    376KB

  • memory/4496-138-0x0000000004830000-0x0000000004933000-memory.dmp

    Filesize

    1.0MB

  • memory/4496-141-0x0000000004690000-0x00000000046EE000-memory.dmp

    Filesize

    376KB