Analysis

  • max time kernel
    149s
  • max time network
    140s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    15-03-2023 11:44

General

  • Target

    file.exe

  • Size

    1.5MB

  • MD5

    94b07cea9a210e7bab966658b2dd1c86

  • SHA1

    efa95afeaf9c75645b67b0814a555e086fe2bece

  • SHA256

    18ab77b46f43847e5544dca47ad24c7a241d3ddf20f9a4ed5f663c477a1420e7

  • SHA512

    60aa974435e264d682e9d5fc42812025337d485ab451aea004310b5e83cfa8c8bbe8f464f37646561c1344cae9b64b580a02c57a7647eae838f7046737d1af95

  • SSDEEP

    12288:6FursW8SLl2NuGQwd8JiUn/5EwrTbgL5TtgC6fplh5ttiCja5pu/ouXYxEUc1FS9:ocB4uGMdhCE7liCUUzS1j

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
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 7 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 3 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.

  • Program crash 1 IoCs
  • 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 64 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 4 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 24 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:828
      • 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:968
    • C:\Users\Admin\AppData\Local\Temp\file.exe
      "C:\Users\Admin\AppData\Local\Temp\file.exe"
      1⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1568
      • C:\Users\Admin\AppData\Local\Temp\zhangy.exe
        "C:\Users\Admin\AppData\Local\Temp\zhangy.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1588
        • C:\Users\Admin\AppData\Local\Temp\zhangy.exe
          "C:\Users\Admin\AppData\Local\Temp\zhangy.exe" -h
          3⤵
          • Executes dropped EXE
          • Modifies registry class
          • Suspicious use of SetWindowsHookEx
          PID:964
      • C:\Users\Admin\AppData\Local\Temp\ss31.exe
        "C:\Users\Admin\AppData\Local\Temp\ss31.exe"
        2⤵
        • Executes dropped EXE
        PID:1192
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1568 -s 968
        2⤵
        • Program crash
        PID:1728
    • 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:1012
      • 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:432

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      557KB

      MD5

      ee5d452cc4ee71e1f544582bf6fca143

      SHA1

      a193952075b2b4a83759098754e814a931b8ba90

      SHA256

      f5cb9476e4b5576bb94eae1d278093b6470b0238226d4c05ec8c76747d57cbfe

      SHA512

      7a935ae3df65b949c5e7f1ed93bd2173165ef4e347ceb5879725fbb995aedeef853b5b1dc4c4155d423f34d004f8a0df59258cefdad5f49e617d0a74764c896b

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

      Filesize

      52KB

      MD5

      1b20e998d058e813dfc515867d31124f

      SHA1

      c9dc9c42a748af18ae1a8c882b90a2b9e3313e6f

      SHA256

      24a53033a2e89acf65f6a5e60d35cb223585817032635e81bf31264eb7dabd00

      SHA512

      79849fbdb9a9e7f7684b570d14662448b093b8aa2b23dfd95856db3a78faf75a95d95c51b8aa8506c4fbecffebcc57cd153dda38c830c05b8cd38629fae673c6

    • C:\Users\Admin\AppData\Local\Temp\ss31.exe

      Filesize

      950KB

      MD5

      a04beb4dbbd9eb3f47555d99a8dade4e

      SHA1

      4eb47611da40f99a521cda4cf45627e98c764114

      SHA256

      042318b99c7ebcef10513e8e24ddd4aa0ec5ab0e8f2d6be1c549cc70fd1bf0a4

      SHA512

      e94b1cfd096355967fb26686834773241f04529ad6ba152030ba40fdbe0d5008fefd45159337cd88c3f461dc45c6ba93194627b070ca7a31c089b13c30aea0ae

    • C:\Users\Admin\AppData\Local\Temp\zhangy.exe

      Filesize

      328KB

      MD5

      bbaa394e6b0ecb7808722986b90d290c

      SHA1

      682e835d7ea19c9aa3d464436d673e5c89ab2bb6

      SHA256

      baa3acf778b3bcf4b7be932384799e8c95a5dc56c0faea8cbf7a33195ab47e73

      SHA512

      2f3ef8921f36beaedf364d72f01af70aaa16acd3804343a1c5ff4f72b91333b4489d15c33c08b05695b216cbd024fc8783676dd98a907be3af8cb8a56c075f4f

    • C:\Users\Admin\AppData\Local\Temp\zhangy.exe

      Filesize

      328KB

      MD5

      bbaa394e6b0ecb7808722986b90d290c

      SHA1

      682e835d7ea19c9aa3d464436d673e5c89ab2bb6

      SHA256

      baa3acf778b3bcf4b7be932384799e8c95a5dc56c0faea8cbf7a33195ab47e73

      SHA512

      2f3ef8921f36beaedf364d72f01af70aaa16acd3804343a1c5ff4f72b91333b4489d15c33c08b05695b216cbd024fc8783676dd98a907be3af8cb8a56c075f4f

    • C:\Users\Admin\AppData\Local\Temp\zhangy.exe

      Filesize

      328KB

      MD5

      bbaa394e6b0ecb7808722986b90d290c

      SHA1

      682e835d7ea19c9aa3d464436d673e5c89ab2bb6

      SHA256

      baa3acf778b3bcf4b7be932384799e8c95a5dc56c0faea8cbf7a33195ab47e73

      SHA512

      2f3ef8921f36beaedf364d72f01af70aaa16acd3804343a1c5ff4f72b91333b4489d15c33c08b05695b216cbd024fc8783676dd98a907be3af8cb8a56c075f4f

    • C:\Users\Admin\AppData\Local\Temp\zhangy.exe

      Filesize

      328KB

      MD5

      bbaa394e6b0ecb7808722986b90d290c

      SHA1

      682e835d7ea19c9aa3d464436d673e5c89ab2bb6

      SHA256

      baa3acf778b3bcf4b7be932384799e8c95a5dc56c0faea8cbf7a33195ab47e73

      SHA512

      2f3ef8921f36beaedf364d72f01af70aaa16acd3804343a1c5ff4f72b91333b4489d15c33c08b05695b216cbd024fc8783676dd98a907be3af8cb8a56c075f4f

    • \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\zhangy.exe

      Filesize

      328KB

      MD5

      bbaa394e6b0ecb7808722986b90d290c

      SHA1

      682e835d7ea19c9aa3d464436d673e5c89ab2bb6

      SHA256

      baa3acf778b3bcf4b7be932384799e8c95a5dc56c0faea8cbf7a33195ab47e73

      SHA512

      2f3ef8921f36beaedf364d72f01af70aaa16acd3804343a1c5ff4f72b91333b4489d15c33c08b05695b216cbd024fc8783676dd98a907be3af8cb8a56c075f4f

    • \Users\Admin\AppData\Local\Temp\zhangy.exe

      Filesize

      328KB

      MD5

      bbaa394e6b0ecb7808722986b90d290c

      SHA1

      682e835d7ea19c9aa3d464436d673e5c89ab2bb6

      SHA256

      baa3acf778b3bcf4b7be932384799e8c95a5dc56c0faea8cbf7a33195ab47e73

      SHA512

      2f3ef8921f36beaedf364d72f01af70aaa16acd3804343a1c5ff4f72b91333b4489d15c33c08b05695b216cbd024fc8783676dd98a907be3af8cb8a56c075f4f

    • \Users\Admin\AppData\Local\Temp\zhangy.exe

      Filesize

      328KB

      MD5

      bbaa394e6b0ecb7808722986b90d290c

      SHA1

      682e835d7ea19c9aa3d464436d673e5c89ab2bb6

      SHA256

      baa3acf778b3bcf4b7be932384799e8c95a5dc56c0faea8cbf7a33195ab47e73

      SHA512

      2f3ef8921f36beaedf364d72f01af70aaa16acd3804343a1c5ff4f72b91333b4489d15c33c08b05695b216cbd024fc8783676dd98a907be3af8cb8a56c075f4f

    • memory/432-82-0x0000000000460000-0x0000000000561000-memory.dmp

      Filesize

      1.0MB

    • memory/432-84-0x00000000009A0000-0x00000000009FE000-memory.dmp

      Filesize

      376KB

    • memory/432-90-0x00000000009A0000-0x00000000009FE000-memory.dmp

      Filesize

      376KB

    • memory/828-83-0x0000000000800000-0x000000000084D000-memory.dmp

      Filesize

      308KB

    • memory/828-80-0x0000000000920000-0x0000000000992000-memory.dmp

      Filesize

      456KB

    • memory/828-79-0x0000000000800000-0x000000000084D000-memory.dmp

      Filesize

      308KB

    • memory/828-85-0x0000000000920000-0x0000000000992000-memory.dmp

      Filesize

      456KB

    • memory/968-86-0x0000000000110000-0x000000000015D000-memory.dmp

      Filesize

      308KB

    • memory/968-87-0x00000000004B0000-0x0000000000522000-memory.dmp

      Filesize

      456KB

    • memory/968-91-0x00000000004B0000-0x0000000000522000-memory.dmp

      Filesize

      456KB

    • memory/968-93-0x00000000004B0000-0x0000000000522000-memory.dmp

      Filesize

      456KB

    • memory/968-94-0x00000000004B0000-0x0000000000522000-memory.dmp

      Filesize

      456KB

    • memory/968-95-0x00000000004B0000-0x0000000000522000-memory.dmp

      Filesize

      456KB

    • memory/968-100-0x00000000004B0000-0x0000000000522000-memory.dmp

      Filesize

      456KB

    • memory/968-101-0x00000000001F0000-0x000000000020B000-memory.dmp

      Filesize

      108KB

    • memory/968-102-0x0000000002D40000-0x0000000002E4B000-memory.dmp

      Filesize

      1.0MB

    • memory/968-104-0x0000000001C50000-0x0000000001C6B000-memory.dmp

      Filesize

      108KB

    • memory/968-103-0x0000000000210000-0x0000000000230000-memory.dmp

      Filesize

      128KB

    • memory/1568-54-0x00000000012F0000-0x0000000001476000-memory.dmp

      Filesize

      1.5MB