Overview

overview

10

Static

static

1

66c5029373...7e.exe

windows7-x64

10

66c5029373...7e.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    145s
  • max time network
    67s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    21-03-2023 14:39

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General

  • Target

    66c50293737f9b121c162073ef894bff11906e8fad9b3c4d0f77f0e49f586d7e.exe

  • Size

    328KB

  • MD5

    01373d57fe51a8c713ff58681b73b545

  • SHA1

    fdde9f7b9b943e8c618ea471ca3d59642530b7d8

  • SHA256

    66c50293737f9b121c162073ef894bff11906e8fad9b3c4d0f77f0e49f586d7e

  • SHA512

    29929961a67d31e5ee696a9b80326e6c1b28490d9e575f580467d11b7051ea94c88fe7a1590f54b44d33b41402b2428d43e06df6b2e9a574246e3af481583cd1

  • SSDEEP

    6144:evSBanJK/5kPas8N0HEAAf1vbViarAWbd33IEPT:evjas8uHEAAtvBpk9EPT

Score
10/10
pseudomanuscryptloader

Malware Config

Signatures

  • Detects PseudoManuscrypt payload 8 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
  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Unexpected DNS network traffic destination 2 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • 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 5 IoCs
  • Modifies registry class 52 IoCs
  • Script User-Agent 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 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:460
      • 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:824
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k WspService
        2⤵
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        • Modifies registry class
        PID:1712
    • C:\Users\Admin\AppData\Local\Temp\66c50293737f9b121c162073ef894bff11906e8fad9b3c4d0f77f0e49f586d7e.exe
      "C:\Users\Admin\AppData\Local\Temp\66c50293737f9b121c162073ef894bff11906e8fad9b3c4d0f77f0e49f586d7e.exe"
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1264
      • C:\Users\Admin\AppData\Local\Temp\66c50293737f9b121c162073ef894bff11906e8fad9b3c4d0f77f0e49f586d7e.exe
        "C:\Users\Admin\AppData\Local\Temp\66c50293737f9b121c162073ef894bff11906e8fad9b3c4d0f77f0e49f586d7e.exe" -h
        2⤵
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        PID:1116
    • 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:512
      • 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:1436

    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

      9dd748ec666aca6d3fee60839649fb02

      SHA1

      d09baa2751e2972fca1ded62d40823889ca8d41d

      SHA256

      555ced7986ad075033f84cf3b656143f7ca8194aa5824415d2d668123e59fac6

      SHA512

      1faff5e33104061a8479b4e03979e23c9814d14a19d780b5b6cdd81af5f371fcd6f96c8f08ba3760b7b660dcf9667e7e7e9f13284d119936bed046cc19c5fdb8

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

      52KB

      MD5

      1b20e998d058e813dfc515867d31124f

      SHA1

      c9dc9c42a748af18ae1a8c882b90a2b9e3313e6f

      SHA256

      24a53033a2e89acf65f6a5e60d35cb223585817032635e81bf31264eb7dabd00

      SHA512

      79849fbdb9a9e7f7684b570d14662448b093b8aa2b23dfd95856db3a78faf75a95d95c51b8aa8506c4fbecffebcc57cd153dda38c830c05b8cd38629fae673c6

      Download Submit
    • memory/824-62-0x0000000000950000-0x000000000099D000-memory.dmp
      Filesize

      308KB

      Download
    • memory/824-72-0x0000000001480000-0x00000000014F2000-memory.dmp
      Filesize

      456KB

      Download
    • memory/824-65-0x0000000000950000-0x000000000099D000-memory.dmp
      Filesize

      308KB

      Download
    • memory/824-63-0x0000000001480000-0x00000000014F2000-memory.dmp
      Filesize

      456KB

      Download
    • memory/1436-71-0x0000000000280000-0x00000000002DE000-memory.dmp
      Filesize

      376KB

      Download
    • memory/1436-70-0x0000000001F20000-0x0000000002021000-memory.dmp
      Filesize

      1.0MB

      Download
    • memory/1436-74-0x0000000000280000-0x00000000002DE000-memory.dmp
      Filesize

      376KB

      Download
    • memory/1712-67-0x00000000004D0000-0x0000000000542000-memory.dmp
      Filesize

      456KB

      Download
    • memory/1712-66-0x0000000000120000-0x000000000016D000-memory.dmp
      Filesize

      308KB

      Download
    • memory/1712-73-0x00000000004D0000-0x0000000000542000-memory.dmp
      Filesize

      456KB

      Download
    • memory/1712-77-0x00000000004D0000-0x0000000000542000-memory.dmp
      Filesize

      456KB

      Download
    • memory/1712-78-0x00000000004D0000-0x0000000000542000-memory.dmp
      Filesize

      456KB

      Download
    • memory/1712-80-0x00000000004D0000-0x0000000000542000-memory.dmp
      Filesize

      456KB

      Download
    • memory/1712-81-0x00000000004D0000-0x0000000000542000-memory.dmp
      Filesize

      456KB

      Download