Analysis

  • max time kernel
    149s
  • max time network
    96s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    06-03-2023 12:37

General

  • Target

    e7f609df5c0fcdc581a69ed69aa3c4a1.exe

  • Size

    308KB

  • MD5

    e7f609df5c0fcdc581a69ed69aa3c4a1

  • SHA1

    345ac5a24438b8edb695d32bde79502023e09e31

  • SHA256

    54151922b3a7a1f16e1b10356da10b8293b6ca897fed9d48ffeb3d2eae2685cd

  • SHA512

    76772a9020ad88203d54ed5d792929957145057da17eff9f6b07c292fd76c0aa120b3ea8ab23c6f7a5c9a802422adf906294ace90a53d90eeafb86a92bae008c

  • SSDEEP

    6144:bOsY+HgEiTA14Xn0Ti8v1bbFgXIQdjrfzNt1IEP3:i814Xn0Ti8tbJyIQdjrfzuEP3

Malware Config

Signatures

  • Detects PseudoManuscrypt payload 8 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.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Loads dropped DLL 4 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 64 IoCs
  • Modifies registry class 22 IoCs
  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 37 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Windows\system32\services.exe
    C:\Windows\system32\services.exe
    1⤵
      PID:468
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k netsvcs
        2⤵
        • Suspicious use of NtCreateUserProcessOtherParentProcess
        • Suspicious use of SetThreadContext
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:856
      • 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:1120
    • C:\Users\Admin\AppData\Local\Temp\e7f609df5c0fcdc581a69ed69aa3c4a1.exe
      "C:\Users\Admin\AppData\Local\Temp\e7f609df5c0fcdc581a69ed69aa3c4a1.exe"
      1⤵
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1244
      • C:\Users\Admin\AppData\Local\Temp\e7f609df5c0fcdc581a69ed69aa3c4a1.exe
        "C:\Users\Admin\AppData\Local\Temp\e7f609df5c0fcdc581a69ed69aa3c4a1.exe" -h
        2⤵
        • Suspicious use of SetWindowsHookEx
        PID:2032
    • 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:676
      • 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:1408

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      557KB

      MD5

      1bd81dc243577b6a0c7f93f6bd9ae40b

      SHA1

      9d4e908b53e52c5216ea7746d2e1b33abea9bc1c

      SHA256

      3b667512e2dc899bc4e0d92628a981b4487b9423c6ae3804893a30c67a2de21c

      SHA512

      e7e647733b88c78b8bb6c1951780b2627e2b0b66dc2b29d257f2925d837936bd12eaa56b43c7d59ec663e81fa31ec50f4767de8ab1441c645c0890aec79a8d10

    • 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

    • \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

    • \Users\Admin\AppData\Local\Temp\db.dll

      Filesize

      52KB

      MD5

      1b20e998d058e813dfc515867d31124f

      SHA1

      c9dc9c42a748af18ae1a8c882b90a2b9e3313e6f

      SHA256

      24a53033a2e89acf65f6a5e60d35cb223585817032635e81bf31264eb7dabd00

      SHA512

      79849fbdb9a9e7f7684b570d14662448b093b8aa2b23dfd95856db3a78faf75a95d95c51b8aa8506c4fbecffebcc57cd153dda38c830c05b8cd38629fae673c6

    • memory/856-78-0x00000000009B0000-0x00000000009FD000-memory.dmp

      Filesize

      308KB

    • memory/856-63-0x00000000009B0000-0x00000000009FD000-memory.dmp

      Filesize

      308KB

    • memory/856-64-0x0000000001980000-0x00000000019F2000-memory.dmp

      Filesize

      456KB

    • memory/856-66-0x00000000009B0000-0x00000000009FD000-memory.dmp

      Filesize

      308KB

    • memory/856-79-0x0000000001980000-0x00000000019F2000-memory.dmp

      Filesize

      456KB

    • memory/1120-83-0x0000000000490000-0x0000000000502000-memory.dmp

      Filesize

      456KB

    • memory/1120-103-0x0000000002C70000-0x0000000002D7A000-memory.dmp

      Filesize

      1.0MB

    • memory/1120-72-0x0000000000490000-0x0000000000502000-memory.dmp

      Filesize

      456KB

    • memory/1120-115-0x0000000002C70000-0x0000000002D7A000-memory.dmp

      Filesize

      1.0MB

    • memory/1120-67-0x00000000000E0000-0x000000000012D000-memory.dmp

      Filesize

      308KB

    • memory/1120-80-0x0000000000490000-0x0000000000502000-memory.dmp

      Filesize

      456KB

    • memory/1120-82-0x0000000000490000-0x0000000000502000-memory.dmp

      Filesize

      456KB

    • memory/1120-105-0x00000000021E0000-0x00000000021FB000-memory.dmp

      Filesize

      108KB

    • memory/1120-88-0x0000000000490000-0x0000000000502000-memory.dmp

      Filesize

      456KB

    • memory/1120-95-0x0000000002000000-0x000000000201B000-memory.dmp

      Filesize

      108KB

    • memory/1120-68-0x0000000000490000-0x0000000000502000-memory.dmp

      Filesize

      456KB

    • memory/1120-104-0x0000000002020000-0x0000000002040000-memory.dmp

      Filesize

      128KB

    • memory/1408-62-0x0000000001F70000-0x0000000002071000-memory.dmp

      Filesize

      1.0MB

    • memory/1408-69-0x0000000000220000-0x000000000027E000-memory.dmp

      Filesize

      376KB