Analysis

  • max time kernel
    153s
  • max time network
    190s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 14:51

General

  • Target

    1bb23fb612b0e226c7c5ef11bba8967cf997fd11d33cffcd68ffdba2733efa0f.exe

  • Size

    622KB

  • MD5

    49bf94707e8c8f9bd40e617165be5b52

  • SHA1

    f4f5b6cd9c87acd6619ee76e4c0ac388583ff7c5

  • SHA256

    1bb23fb612b0e226c7c5ef11bba8967cf997fd11d33cffcd68ffdba2733efa0f

  • SHA512

    a0090c396c230f7c51b53e4b947556f26e887e1ea186e0c076ab840fc633db4697c947d8950a2aa3ec54717b88b12ade4f43538cd2fed9144d431c7e65a2221b

  • SSDEEP

    12288:A8w7gYZ4+Rutkdy2oqvdT406LGrkGE4Qiujc+zNNZcy:tw7pXktkHT40BFE77FzKy

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.gmail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    glfjdvzcsbfwvmtr

Signatures

  • NirSoft MailPassView 3 IoCs

    Password recovery tool for various email clients

  • Nirsoft 6 IoCs
  • Executes dropped EXE 4 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 4 IoCs
  • Drops file in Windows directory 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 6 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 13 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1bb23fb612b0e226c7c5ef11bba8967cf997fd11d33cffcd68ffdba2733efa0f.exe
    "C:\Users\Admin\AppData\Local\Temp\1bb23fb612b0e226c7c5ef11bba8967cf997fd11d33cffcd68ffdba2733efa0f.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3004
    • C:\Users\Admin\AppData\Local\Temp\1bb23fb612b0e226c7c5ef11bba8967cf997fd11d33cffcd68ffdba2733efa0f.exe
      "C:\Users\Admin\AppData\Local\Temp\1bb23fb612b0e226c7c5ef11bba8967cf997fd11d33cffcd68ffdba2733efa0f.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1372
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" /stext "C:\Users\Admin\AppData\Local\Temp\logff.txt
        3⤵
          PID:8
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
          "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" /stext "C:\Users\Admin\AppData\Local\Temp\logmail.txt
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:4956
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
          dw20.exe -x -s 2060
          3⤵
          • Drops file in Windows directory
          • Checks processor information in registry
          • Enumerates system info in registry
          • Suspicious use of AdjustPrivilegeToken
          PID:4396
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Dnscache.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Dnscache.exe"
        2⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1192
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Adobe.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Adobe.exe"
          3⤵
          • Executes dropped EXE
          • Checks computer location settings
          • Suspicious use of SetThreadContext
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4052
          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Adobe.exe
            "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Adobe.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:3628
            • C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
              dw20.exe -x -s 1992
              5⤵
              • Checks processor information in registry
              • Enumerates system info in registry
              • Suspicious use of AdjustPrivilegeToken
              PID:3096
          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Dnscache.exe
            "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Dnscache.exe"
            4⤵
            • Executes dropped EXE
            • Adds Run key to start application
            • Suspicious use of AdjustPrivilegeToken
            PID:1620

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scripting

    1
    T1064

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Scripting

    1
    T1064

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    1
    T1081

    Discovery

    Query Registry

    3
    T1012

    System Information Discovery

    4
    T1082

    Collection

    Data from Local System

    1
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\Dnscache.exe.log
      Filesize

      128B

      MD5

      a5dcc7c9c08af7dddd82be5b036a4416

      SHA1

      4f998ca1526d199e355ffb435bae111a2779b994

      SHA256

      e24033ceec97fd03402b03acaaabd1d1e378e83bb1683afbccac760e00f8ead5

      SHA512

      56035de734836c0c39f0b48641c51c26adb6e79c6c65e23ca96603f71c95b8673e2ef853146e87efc899dd1878d0bbc2c82d91fbf0fce81c552048e986f9bb5a

    • C:\Users\Admin\AppData\Local\Temp\logff.txt
      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Adobe.exe
      Filesize

      622KB

      MD5

      49bf94707e8c8f9bd40e617165be5b52

      SHA1

      f4f5b6cd9c87acd6619ee76e4c0ac388583ff7c5

      SHA256

      1bb23fb612b0e226c7c5ef11bba8967cf997fd11d33cffcd68ffdba2733efa0f

      SHA512

      a0090c396c230f7c51b53e4b947556f26e887e1ea186e0c076ab840fc633db4697c947d8950a2aa3ec54717b88b12ade4f43538cd2fed9144d431c7e65a2221b

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Adobe.exe
      Filesize

      622KB

      MD5

      49bf94707e8c8f9bd40e617165be5b52

      SHA1

      f4f5b6cd9c87acd6619ee76e4c0ac388583ff7c5

      SHA256

      1bb23fb612b0e226c7c5ef11bba8967cf997fd11d33cffcd68ffdba2733efa0f

      SHA512

      a0090c396c230f7c51b53e4b947556f26e887e1ea186e0c076ab840fc633db4697c947d8950a2aa3ec54717b88b12ade4f43538cd2fed9144d431c7e65a2221b

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Adobe.exe
      Filesize

      622KB

      MD5

      49bf94707e8c8f9bd40e617165be5b52

      SHA1

      f4f5b6cd9c87acd6619ee76e4c0ac388583ff7c5

      SHA256

      1bb23fb612b0e226c7c5ef11bba8967cf997fd11d33cffcd68ffdba2733efa0f

      SHA512

      a0090c396c230f7c51b53e4b947556f26e887e1ea186e0c076ab840fc633db4697c947d8950a2aa3ec54717b88b12ade4f43538cd2fed9144d431c7e65a2221b

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Dnscache.exe
      Filesize

      7KB

      MD5

      34560fe55cedf502185ee393c9a7cbad

      SHA1

      8f889c0dfd81cc45b7c1ed7e02c2ac218bdd1b88

      SHA256

      c10aa251ae8985e2a0d937ee3d4fc564899f2ff847fb6ddc051dccc8fed4c534

      SHA512

      45837ddb402d5c1ecca90068d439f9216b9efae08b49f887c5e2ee8754ff9acb14aea2aa7cd705d5f95ba1e8c4069dd87ff5dddcf6caee9b71d66dfbd060f382

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Dnscache.exe
      Filesize

      7KB

      MD5

      34560fe55cedf502185ee393c9a7cbad

      SHA1

      8f889c0dfd81cc45b7c1ed7e02c2ac218bdd1b88

      SHA256

      c10aa251ae8985e2a0d937ee3d4fc564899f2ff847fb6ddc051dccc8fed4c534

      SHA512

      45837ddb402d5c1ecca90068d439f9216b9efae08b49f887c5e2ee8754ff9acb14aea2aa7cd705d5f95ba1e8c4069dd87ff5dddcf6caee9b71d66dfbd060f382

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Dnscache.exe
      Filesize

      7KB

      MD5

      34560fe55cedf502185ee393c9a7cbad

      SHA1

      8f889c0dfd81cc45b7c1ed7e02c2ac218bdd1b88

      SHA256

      c10aa251ae8985e2a0d937ee3d4fc564899f2ff847fb6ddc051dccc8fed4c534

      SHA512

      45837ddb402d5c1ecca90068d439f9216b9efae08b49f887c5e2ee8754ff9acb14aea2aa7cd705d5f95ba1e8c4069dd87ff5dddcf6caee9b71d66dfbd060f382

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Dnscache.exe
      Filesize

      7KB

      MD5

      34560fe55cedf502185ee393c9a7cbad

      SHA1

      8f889c0dfd81cc45b7c1ed7e02c2ac218bdd1b88

      SHA256

      c10aa251ae8985e2a0d937ee3d4fc564899f2ff847fb6ddc051dccc8fed4c534

      SHA512

      45837ddb402d5c1ecca90068d439f9216b9efae08b49f887c5e2ee8754ff9acb14aea2aa7cd705d5f95ba1e8c4069dd87ff5dddcf6caee9b71d66dfbd060f382

    • memory/8-142-0x0000000000400000-0x0000000000418000-memory.dmp
      Filesize

      96KB

    • memory/8-144-0x0000000000400000-0x0000000000418000-memory.dmp
      Filesize

      96KB

    • memory/8-145-0x0000000000400000-0x0000000000418000-memory.dmp
      Filesize

      96KB

    • memory/8-141-0x0000000000000000-mapping.dmp
    • memory/1192-140-0x0000000074C60000-0x0000000075211000-memory.dmp
      Filesize

      5.7MB

    • memory/1192-147-0x0000000074C60000-0x0000000075211000-memory.dmp
      Filesize

      5.7MB

    • memory/1192-136-0x0000000000000000-mapping.dmp
    • memory/1192-161-0x0000000074C60000-0x0000000075211000-memory.dmp
      Filesize

      5.7MB

    • memory/1372-146-0x0000000074C60000-0x0000000075211000-memory.dmp
      Filesize

      5.7MB

    • memory/1372-134-0x0000000000000000-mapping.dmp
    • memory/1372-135-0x0000000000400000-0x0000000000476000-memory.dmp
      Filesize

      472KB

    • memory/1372-139-0x0000000074C60000-0x0000000075211000-memory.dmp
      Filesize

      5.7MB

    • memory/1372-155-0x0000000074C60000-0x0000000075211000-memory.dmp
      Filesize

      5.7MB

    • memory/1620-166-0x0000000000000000-mapping.dmp
    • memory/1620-174-0x0000000074C60000-0x0000000075211000-memory.dmp
      Filesize

      5.7MB

    • memory/1620-171-0x0000000074C60000-0x0000000075211000-memory.dmp
      Filesize

      5.7MB

    • memory/3004-132-0x0000000074C60000-0x0000000075211000-memory.dmp
      Filesize

      5.7MB

    • memory/3004-133-0x0000000074C60000-0x0000000075211000-memory.dmp
      Filesize

      5.7MB

    • memory/3004-162-0x0000000074C60000-0x0000000075211000-memory.dmp
      Filesize

      5.7MB

    • memory/3096-172-0x0000000000000000-mapping.dmp
    • memory/3628-170-0x0000000074C60000-0x0000000075211000-memory.dmp
      Filesize

      5.7MB

    • memory/3628-163-0x0000000000000000-mapping.dmp
    • memory/3628-173-0x0000000074C60000-0x0000000075211000-memory.dmp
      Filesize

      5.7MB

    • memory/4052-157-0x0000000000000000-mapping.dmp
    • memory/4052-160-0x0000000074C60000-0x0000000075211000-memory.dmp
      Filesize

      5.7MB

    • memory/4052-159-0x0000000074C60000-0x0000000075211000-memory.dmp
      Filesize

      5.7MB

    • memory/4396-154-0x0000000000000000-mapping.dmp
    • memory/4956-150-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/4956-152-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/4956-149-0x0000000000000000-mapping.dmp
    • memory/4956-153-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB