Overview

overview

10

Static

static

1

winprofile

windows7-x64

10

winprofile

windows10-1703-x64

10

Analysis

  • max time kernel
    300s
  • max time network
    181s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    26-02-2023 04:56

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General

  • Target

    4ca6df75008045a45e441869a4389b4ef620df9f89cd5f05fd329d0f9987c822.exe

  • Size

    312KB

  • MD5

    eb7d2add3fe15ee8524a07c2c75bedb9

  • SHA1

    d13c52cd6709f416aefe338922c77bae33a85f31

  • SHA256

    4ca6df75008045a45e441869a4389b4ef620df9f89cd5f05fd329d0f9987c822

  • SHA512

    484f1172d1c0c240a8b3cb7412f41cafc25a6473256d96da4a2ed7657a7606e1a2ae202b4db43e5db180dc3325c3211b524f2d52389bd52452c5f09e2d194701

  • SSDEEP

    6144:E4PWLN3m+XeeqeO0UQeQ8KbLVHqAQg5jIQshEPn:6aeqeO0UQB8KFHqAYhEPn

Score
10/10
pseudomanuscryptloader

Malware Config

Signatures

  • Detects PseudoManuscrypt payload 29 IoCs
    loader
  • 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.

    loaderpseudomanuscrypt
  • 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 IKEEXT
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2336
  • 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:2764
    • 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:3536
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2396
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s WpnService
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2384
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2372
  • 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 SENS
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1392
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s UserManager
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1376
  • 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:1124
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Schedule
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1032
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:336
  • 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:3236
    • C:\Users\Admin\AppData\Local\Temp\4ca6df75008045a45e441869a4389b4ef620df9f89cd5f05fd329d0f9987c822.exe
      "C:\Users\Admin\AppData\Local\Temp\4ca6df75008045a45e441869a4389b4ef620df9f89cd5f05fd329d0f9987c822.exe" -h
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:4068
  • 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:4476
    • 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:4324

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

2
T1082

Query Registry

1
T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\db.dll
    Filesize

    52KB

    MD5

    1b20e998d058e813dfc515867d31124f

    SHA1

    c9dc9c42a748af18ae1a8c882b90a2b9e3313e6f

    SHA256

    24a53033a2e89acf65f6a5e60d35cb223585817032635e81bf31264eb7dabd00

    SHA512

    79849fbdb9a9e7f7684b570d14662448b093b8aa2b23dfd95856db3a78faf75a95d95c51b8aa8506c4fbecffebcc57cd153dda38c830c05b8cd38629fae673c6

    Download Submit
  • \Users\Admin\AppData\Local\Temp\db.dll
    Filesize

    52KB

    MD5

    1b20e998d058e813dfc515867d31124f

    SHA1

    c9dc9c42a748af18ae1a8c882b90a2b9e3313e6f

    SHA256

    24a53033a2e89acf65f6a5e60d35cb223585817032635e81bf31264eb7dabd00

    SHA512

    79849fbdb9a9e7f7684b570d14662448b093b8aa2b23dfd95856db3a78faf75a95d95c51b8aa8506c4fbecffebcc57cd153dda38c830c05b8cd38629fae673c6

    Download Submit
  • memory/336-133-0x000001EFE8030000-0x000001EFE80A2000-memory.dmp
    Filesize

    456KB

    Download
  • memory/336-170-0x000001EFE8030000-0x000001EFE80A2000-memory.dmp
    Filesize

    456KB

    Download
  • memory/1032-179-0x000001D6F3900000-0x000001D6F3972000-memory.dmp
    Filesize

    456KB

    Download
  • memory/1032-160-0x000001D6F3900000-0x000001D6F3972000-memory.dmp
    Filesize

    456KB

    Download
  • memory/1124-177-0x000001ED56470000-0x000001ED564E2000-memory.dmp
    Filesize

    456KB

    Download
  • memory/1124-154-0x000001ED56470000-0x000001ED564E2000-memory.dmp
    Filesize

    456KB

    Download
  • memory/1172-217-0x00000275346B0000-0x0000027534722000-memory.dmp
    Filesize

    456KB

    Download
  • memory/1172-190-0x00000275346B0000-0x0000027534722000-memory.dmp
    Filesize

    456KB

    Download
  • memory/1376-218-0x00000140C7000000-0x00000140C7072000-memory.dmp
    Filesize

    456KB

    Download
  • memory/1376-198-0x00000140C7000000-0x00000140C7072000-memory.dmp
    Filesize

    456KB

    Download
  • memory/1392-169-0x0000020E9DC40000-0x0000020E9DCB2000-memory.dmp
    Filesize

    456KB

    Download
  • memory/1392-214-0x0000020E9DC40000-0x0000020E9DCB2000-memory.dmp
    Filesize

    456KB

    Download
  • memory/1852-181-0x000002180EC40000-0x000002180ECB2000-memory.dmp
    Filesize

    456KB

    Download
  • memory/1852-216-0x000002180EC40000-0x000002180ECB2000-memory.dmp
    Filesize

    456KB

    Download
  • memory/2336-142-0x000002D613640000-0x000002D6136B2000-memory.dmp
    Filesize

    456KB

    Download
  • memory/2336-174-0x000002D613640000-0x000002D6136B2000-memory.dmp
    Filesize

    456KB

    Download
  • memory/2372-219-0x0000025E67E40000-0x0000025E67EB2000-memory.dmp
    Filesize

    456KB

    Download
  • memory/2372-205-0x0000025E67E40000-0x0000025E67EB2000-memory.dmp
    Filesize

    456KB

    Download
  • memory/2384-211-0x0000020F53470000-0x0000020F534E2000-memory.dmp
    Filesize

    456KB

    Download
  • memory/2384-221-0x0000020F53470000-0x0000020F534E2000-memory.dmp
    Filesize

    456KB

    Download
  • memory/2396-148-0x000001D0F8940000-0x000001D0F89B2000-memory.dmp
    Filesize

    456KB

    Download
  • memory/2396-176-0x000001D0F8940000-0x000001D0F89B2000-memory.dmp
    Filesize

    456KB

    Download
  • memory/2764-122-0x0000023C4B4C0000-0x0000023C4B50D000-memory.dmp
    Filesize

    308KB

    Download
  • memory/2764-168-0x0000023C4BD00000-0x0000023C4BD72000-memory.dmp
    Filesize

    456KB

    Download
  • memory/2764-127-0x0000023C4B4C0000-0x0000023C4B50D000-memory.dmp
    Filesize

    308KB

    Download
  • memory/2764-125-0x0000023C4BD00000-0x0000023C4BD72000-memory.dmp
    Filesize

    456KB

    Download
  • memory/3536-227-0x00000271BC580000-0x00000271BC5F2000-memory.dmp
    Filesize

    456KB

    Download
  • memory/3536-134-0x00000271BC580000-0x00000271BC5F2000-memory.dmp
    Filesize

    456KB

    Download
  • memory/3536-226-0x00000271BC580000-0x00000271BC5F2000-memory.dmp
    Filesize

    456KB

    Download
  • memory/3536-171-0x00000271BC580000-0x00000271BC5F2000-memory.dmp
    Filesize

    456KB

    Download
  • memory/3536-238-0x00000271BC670000-0x00000271BC68B000-memory.dmp
    Filesize

    108KB

    Download
  • memory/3536-239-0x00000271BEE00000-0x00000271BEF0A000-memory.dmp
    Filesize

    1.0MB

    Download
  • memory/3536-240-0x00000271BC690000-0x00000271BC6B0000-memory.dmp
    Filesize

    128KB

    Download
  • memory/3536-241-0x00000271BDFA0000-0x00000271BDFBB000-memory.dmp
    Filesize

    108KB

    Download
  • memory/3536-262-0x00000271BEE00000-0x00000271BEF0A000-memory.dmp
    Filesize

    1.0MB

    Download
  • memory/4324-163-0x0000000000F90000-0x0000000001099000-memory.dmp
    Filesize

    1.0MB

    Download
  • memory/4324-165-0x00000000010A0000-0x00000000010FE000-memory.dmp
    Filesize

    376KB

    Download
  • memory/4324-215-0x00000000010A0000-0x00000000010FE000-memory.dmp
    Filesize

    376KB

    Download