Analysis

  • max time kernel
    140s
  • max time network
    143s
  • 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

General

  • Target

    d3e1e0659ff9d7843f91e722d6e94cff0cbf891ab115b7dc23bde7c52a9ead09.exe

  • Size

    1.5MB

  • MD5

    9b8786c9e74cfd314d7fe9fab571d451

  • SHA1

    e5725184c2da0103046f44c211cc943582c1b2b2

  • SHA256

    d3e1e0659ff9d7843f91e722d6e94cff0cbf891ab115b7dc23bde7c52a9ead09

  • SHA512

    9400e778bf8e57a9bcb9593f762f2473084ed06d04bf6d90566ab17019b0dd8c03f4a6190f72eeeb94fe1d0acf5d42223735d625a2a935a21d61182acef827d9

  • SSDEEP

    12288:0uKd2SU1qQFhpGf1U1gYZMt4TwIwwNjCBCTIXFgpWW5Gm41jKmejWYzHWsd+1Ys2:NKdKUYLm7dsTccLa1mmerbED

Malware Config

Signatures

  • Detects PseudoManuscrypt payload 12 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 3 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.

  • 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 6 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 24 IoCs

Processes

  • C:\Windows\system32\services.exe
    C:\Windows\system32\services.exe
    1⤵
      PID:464
      • 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:832
      • 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:1308
    • C:\Users\Admin\AppData\Local\Temp\d3e1e0659ff9d7843f91e722d6e94cff0cbf891ab115b7dc23bde7c52a9ead09.exe
      "C:\Users\Admin\AppData\Local\Temp\d3e1e0659ff9d7843f91e722d6e94cff0cbf891ab115b7dc23bde7c52a9ead09.exe"
      1⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1332
      • C:\Users\Admin\AppData\Local\Temp\zyy.exe
        "C:\Users\Admin\AppData\Local\Temp\zyy.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1280
        • C:\Users\Admin\AppData\Local\Temp\zyy.exe
          "C:\Users\Admin\AppData\Local\Temp\zyy.exe" -h
          3⤵
          • Executes dropped EXE
          • Modifies registry class
          • Suspicious use of SetWindowsHookEx
          PID:1664
      • C:\Users\Admin\AppData\Local\Temp\ss31.exe
        "C:\Users\Admin\AppData\Local\Temp\ss31.exe"
        2⤵
        • Executes dropped EXE
        PID:1276
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1332 -s 928
        2⤵
        • Program crash
        PID:1500
    • 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:600
      • 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:1604

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Discovery

    System Information Discovery

    2
    T1082

    Query Registry

    1
    T1012

    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

      2c29457ffd728428540c91aec6b22cc3

      SHA1

      8de27d76e9b04e92af69202b0f0bdafd9f3aff61

      SHA256

      97af1eceb6079f69333105e7fda2c391bad555f78946901748480e26ec29a871

      SHA512

      964da7908a578df6a342a5bf58be55b805294d08bcf4578e8fb3a6ad9347dedacb335da3ec2ddfa14cf62a48a416b9d15def1c9c2f6d36f61b5cd0ef09bf00d7

    • C:\Users\Admin\AppData\Local\Temp\zyy.exe
      Filesize

      328KB

      MD5

      bbaa394e6b0ecb7808722986b90d290c

      SHA1

      682e835d7ea19c9aa3d464436d673e5c89ab2bb6

      SHA256

      baa3acf778b3bcf4b7be932384799e8c95a5dc56c0faea8cbf7a33195ab47e73

      SHA512

      2f3ef8921f36beaedf364d72f01af70aaa16acd3804343a1c5ff4f72b91333b4489d15c33c08b05695b216cbd024fc8783676dd98a907be3af8cb8a56c075f4f

    • C:\Users\Admin\AppData\Local\Temp\zyy.exe
      Filesize

      328KB

      MD5

      bbaa394e6b0ecb7808722986b90d290c

      SHA1

      682e835d7ea19c9aa3d464436d673e5c89ab2bb6

      SHA256

      baa3acf778b3bcf4b7be932384799e8c95a5dc56c0faea8cbf7a33195ab47e73

      SHA512

      2f3ef8921f36beaedf364d72f01af70aaa16acd3804343a1c5ff4f72b91333b4489d15c33c08b05695b216cbd024fc8783676dd98a907be3af8cb8a56c075f4f

    • C:\Users\Admin\AppData\Local\Temp\zyy.exe
      Filesize

      328KB

      MD5

      bbaa394e6b0ecb7808722986b90d290c

      SHA1

      682e835d7ea19c9aa3d464436d673e5c89ab2bb6

      SHA256

      baa3acf778b3bcf4b7be932384799e8c95a5dc56c0faea8cbf7a33195ab47e73

      SHA512

      2f3ef8921f36beaedf364d72f01af70aaa16acd3804343a1c5ff4f72b91333b4489d15c33c08b05695b216cbd024fc8783676dd98a907be3af8cb8a56c075f4f

    • C:\Users\Admin\AppData\Local\Temp\zyy.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\zyy.exe
      Filesize

      328KB

      MD5

      bbaa394e6b0ecb7808722986b90d290c

      SHA1

      682e835d7ea19c9aa3d464436d673e5c89ab2bb6

      SHA256

      baa3acf778b3bcf4b7be932384799e8c95a5dc56c0faea8cbf7a33195ab47e73

      SHA512

      2f3ef8921f36beaedf364d72f01af70aaa16acd3804343a1c5ff4f72b91333b4489d15c33c08b05695b216cbd024fc8783676dd98a907be3af8cb8a56c075f4f

    • \Users\Admin\AppData\Local\Temp\zyy.exe
      Filesize

      328KB

      MD5

      bbaa394e6b0ecb7808722986b90d290c

      SHA1

      682e835d7ea19c9aa3d464436d673e5c89ab2bb6

      SHA256

      baa3acf778b3bcf4b7be932384799e8c95a5dc56c0faea8cbf7a33195ab47e73

      SHA512

      2f3ef8921f36beaedf364d72f01af70aaa16acd3804343a1c5ff4f72b91333b4489d15c33c08b05695b216cbd024fc8783676dd98a907be3af8cb8a56c075f4f

    • \Users\Admin\AppData\Local\Temp\zyy.exe
      Filesize

      328KB

      MD5

      bbaa394e6b0ecb7808722986b90d290c

      SHA1

      682e835d7ea19c9aa3d464436d673e5c89ab2bb6

      SHA256

      baa3acf778b3bcf4b7be932384799e8c95a5dc56c0faea8cbf7a33195ab47e73

      SHA512

      2f3ef8921f36beaedf364d72f01af70aaa16acd3804343a1c5ff4f72b91333b4489d15c33c08b05695b216cbd024fc8783676dd98a907be3af8cb8a56c075f4f

    • memory/832-80-0x00000000013A0000-0x0000000001412000-memory.dmp
      Filesize

      456KB

    • memory/832-91-0x0000000000C30000-0x0000000000C7D000-memory.dmp
      Filesize

      308KB

    • memory/832-79-0x0000000000C30000-0x0000000000C7D000-memory.dmp
      Filesize

      308KB

    • memory/832-82-0x0000000000C30000-0x0000000000C7D000-memory.dmp
      Filesize

      308KB

    • memory/832-96-0x0000000000C30000-0x0000000000C7D000-memory.dmp
      Filesize

      308KB

    • memory/832-92-0x00000000013A0000-0x0000000001412000-memory.dmp
      Filesize

      456KB

    • memory/1308-95-0x0000000000440000-0x00000000004B2000-memory.dmp
      Filesize

      456KB

    • memory/1308-102-0x0000000000440000-0x00000000004B2000-memory.dmp
      Filesize

      456KB

    • memory/1308-89-0x0000000000440000-0x00000000004B2000-memory.dmp
      Filesize

      456KB

    • memory/1308-84-0x0000000000440000-0x00000000004B2000-memory.dmp
      Filesize

      456KB

    • memory/1308-105-0x0000000000440000-0x00000000004B2000-memory.dmp
      Filesize

      456KB

    • memory/1308-90-0x0000000000440000-0x00000000004B2000-memory.dmp
      Filesize

      456KB

    • memory/1308-83-0x00000000000E0000-0x000000000012D000-memory.dmp
      Filesize

      308KB

    • memory/1308-104-0x0000000000440000-0x00000000004B2000-memory.dmp
      Filesize

      456KB

    • memory/1308-97-0x0000000000440000-0x00000000004B2000-memory.dmp
      Filesize

      456KB

    • memory/1308-99-0x0000000000440000-0x00000000004B2000-memory.dmp
      Filesize

      456KB

    • memory/1308-100-0x0000000000440000-0x00000000004B2000-memory.dmp
      Filesize

      456KB

    • memory/1332-54-0x0000000000F80000-0x0000000001106000-memory.dmp
      Filesize

      1.5MB

    • memory/1604-86-0x00000000008B0000-0x000000000090E000-memory.dmp
      Filesize

      376KB

    • memory/1604-85-0x0000000000B30000-0x0000000000C31000-memory.dmp
      Filesize

      1.0MB