Analysis

  • max time kernel
    150s
  • 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 05:38

General

  • Target

    eaf978fd469c4acc54a1b4cdaa4298c04b385b0cce10215f96a737b26a27fd30.exe

  • Size

    308KB

  • MD5

    24527c1cb60027d91ddc051990ba55ca

  • SHA1

    6f55efac879c92f116ab73ccd431c898c6f794f9

  • SHA256

    eaf978fd469c4acc54a1b4cdaa4298c04b385b0cce10215f96a737b26a27fd30

  • SHA512

    cbf0dab2eb7e3b44359db887a7441459a49575faaab0cfec6ddb67b43957391510fb7a0beb63098c3d826c96c91fff284e726c16284f70128b7cd577d30ee11e

  • SSDEEP

    6144:bOsY+HgEiTA14Xn0Ti8v1bbFgXIQdjrfzNt1mEP3: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 5 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:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Schedule
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:916
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1088
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s UserManager
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1268
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Themes
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1324
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s SENS
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1488
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1888
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2180
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2212
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2384
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s WpnService
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2416
  • 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:2464
    • 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:8
  • C:\Users\Admin\AppData\Local\Temp\eaf978fd469c4acc54a1b4cdaa4298c04b385b0cce10215f96a737b26a27fd30.exe
    "C:\Users\Admin\AppData\Local\Temp\eaf978fd469c4acc54a1b4cdaa4298c04b385b0cce10215f96a737b26a27fd30.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4344
    • C:\Users\Admin\AppData\Local\Temp\eaf978fd469c4acc54a1b4cdaa4298c04b385b0cce10215f96a737b26a27fd30.exe
      "C:\Users\Admin\AppData\Local\Temp\eaf978fd469c4acc54a1b4cdaa4298c04b385b0cce10215f96a737b26a27fd30.exe" -h
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:3580
  • 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:4136
    • 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:2120

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    557KB

    MD5

    59da5860d9d5fdc3a347cc7d14ad7dd2

    SHA1

    40f46baac673a592db91637f2bbd989ece8719c3

    SHA256

    f670b8940d6c65d4cd09107b3663ea79d7811446153e39f1fc02223680bdfaaf

    SHA512

    c878fd46c6be06557789612d5775240b9d9056057fee991c5ac8614c71d48da475a8e465aa4eb315df414e892dbd978b50d0b5fa727332053b013e07f032d063

  • 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/8-229-0x0000022ED5800000-0x0000022ED5872000-memory.dmp

    Filesize

    456KB

  • memory/8-239-0x0000022ED7060000-0x0000022ED707B000-memory.dmp

    Filesize

    108KB

  • memory/8-260-0x0000022ED7D00000-0x0000022ED7E0A000-memory.dmp

    Filesize

    1.0MB

  • memory/8-262-0x0000022ED70C0000-0x0000022ED70DB000-memory.dmp

    Filesize

    108KB

  • memory/8-135-0x0000022ED5800000-0x0000022ED5872000-memory.dmp

    Filesize

    456KB

  • memory/8-259-0x0000022ED7060000-0x0000022ED707B000-memory.dmp

    Filesize

    108KB

  • memory/8-241-0x0000022ED7080000-0x0000022ED70A0000-memory.dmp

    Filesize

    128KB

  • memory/8-167-0x0000022ED5800000-0x0000022ED5872000-memory.dmp

    Filesize

    456KB

  • memory/8-154-0x0000022ED5800000-0x0000022ED5872000-memory.dmp

    Filesize

    456KB

  • memory/8-242-0x0000022ED70C0000-0x0000022ED70DB000-memory.dmp

    Filesize

    108KB

  • memory/8-240-0x0000022ED7D00000-0x0000022ED7E0A000-memory.dmp

    Filesize

    1.0MB

  • memory/8-261-0x0000022ED7080000-0x0000022ED70A0000-memory.dmp

    Filesize

    128KB

  • memory/68-169-0x0000022D2F440000-0x0000022D2F4B2000-memory.dmp

    Filesize

    456KB

  • memory/68-136-0x0000022D2F440000-0x0000022D2F4B2000-memory.dmp

    Filesize

    456KB

  • memory/916-165-0x0000026DE0AB0000-0x0000026DE0B22000-memory.dmp

    Filesize

    456KB

  • memory/916-215-0x0000026DE0AB0000-0x0000026DE0B22000-memory.dmp

    Filesize

    456KB

  • memory/1088-157-0x000001B6A0D80000-0x000001B6A0DF2000-memory.dmp

    Filesize

    456KB

  • memory/1088-175-0x000001B6A0D80000-0x000001B6A0DF2000-memory.dmp

    Filesize

    456KB

  • memory/1268-220-0x000001E485400000-0x000001E485472000-memory.dmp

    Filesize

    456KB

  • memory/1268-199-0x000001E485400000-0x000001E485472000-memory.dmp

    Filesize

    456KB

  • memory/1324-192-0x00000225F8E60000-0x00000225F8ED2000-memory.dmp

    Filesize

    456KB

  • memory/1324-219-0x00000225F8E60000-0x00000225F8ED2000-memory.dmp

    Filesize

    456KB

  • memory/1488-179-0x000002763B310000-0x000002763B382000-memory.dmp

    Filesize

    456KB

  • memory/1488-217-0x000002763B310000-0x000002763B382000-memory.dmp

    Filesize

    456KB

  • memory/1888-185-0x0000027D23360000-0x0000027D233D2000-memory.dmp

    Filesize

    456KB

  • memory/1888-218-0x0000027D23360000-0x0000027D233D2000-memory.dmp

    Filesize

    456KB

  • memory/2120-163-0x0000000004DF0000-0x0000000004E4E000-memory.dmp

    Filesize

    376KB

  • memory/2120-216-0x0000000004DF0000-0x0000000004E4E000-memory.dmp

    Filesize

    376KB

  • memory/2120-162-0x0000000004C60000-0x0000000004D64000-memory.dmp

    Filesize

    1.0MB

  • memory/2180-150-0x000001BCD1990000-0x000001BCD1A02000-memory.dmp

    Filesize

    456KB

  • memory/2180-172-0x000001BCD1990000-0x000001BCD1A02000-memory.dmp

    Filesize

    456KB

  • memory/2212-144-0x000001D703A70000-0x000001D703AE2000-memory.dmp

    Filesize

    456KB

  • memory/2212-171-0x000001D703A70000-0x000001D703AE2000-memory.dmp

    Filesize

    456KB

  • memory/2384-221-0x000001DABD040000-0x000001DABD0B2000-memory.dmp

    Filesize

    456KB

  • memory/2384-206-0x000001DABD040000-0x000001DABD0B2000-memory.dmp

    Filesize

    456KB

  • memory/2416-222-0x00000194BC400000-0x00000194BC472000-memory.dmp

    Filesize

    456KB

  • memory/2416-212-0x00000194BC400000-0x00000194BC472000-memory.dmp

    Filesize

    456KB

  • memory/2464-166-0x0000016A66520000-0x0000016A66592000-memory.dmp

    Filesize

    456KB

  • memory/2464-129-0x0000016A66200000-0x0000016A6624D000-memory.dmp

    Filesize

    308KB

  • memory/2464-127-0x0000016A66520000-0x0000016A66592000-memory.dmp

    Filesize

    456KB

  • memory/2464-124-0x0000016A66200000-0x0000016A6624D000-memory.dmp

    Filesize

    308KB