Analysis

  • max time kernel
    165s
  • max time network
    182s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    18-04-2022 12:37

General

  • Target

    c20fa32bcec64fb853a75c8a25a185682a3ef4ed77f5cb1378512d0f942c077f.exe

  • Size

    876KB

  • MD5

    d0984b64a82a8564e0309ca82f581035

  • SHA1

    18c8163ab1dddba15ecc8af94ee3d1a61c28cdef

  • SHA256

    c20fa32bcec64fb853a75c8a25a185682a3ef4ed77f5cb1378512d0f942c077f

  • SHA512

    b589f8b92fe9d08cedfadfece30848ec97c42123ce203a506dde326a0e2361fbb03ca4b2f69d2bb7915d17baed1c19e96906d1cba7f9d3fc14e2b86f8ac56416

Malware Config

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

  • MassLogger Main Payload 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 42 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 27 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c20fa32bcec64fb853a75c8a25a185682a3ef4ed77f5cb1378512d0f942c077f.exe
    "C:\Users\Admin\AppData\Local\Temp\c20fa32bcec64fb853a75c8a25a185682a3ef4ed77f5cb1378512d0f942c077f.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4564
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v admin /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\Desktop\.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3556
      • C:\Windows\SysWOW64\reg.exe
        REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v admin /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\Desktop\.exe"
        3⤵
        • Adds Run key to start application
        PID:2044
    • C:\Users\Admin\Desktop\.exe
      "C:\Users\Admin\Desktop\.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4572
      • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
        "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • outlook_office_path
        • outlook_win_path
        PID:224

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe

    Filesize

    42KB

    MD5

    9827ff3cdf4b83f9c86354606736ca9c

    SHA1

    e73d73f42bb2a310f03eb1bcbb22be2b8eb7c723

    SHA256

    c1cf3dc8fa1c7fc00f88e07ad539979b3706ca8d69223cffd1d58bc8f521f63a

    SHA512

    8261828d55f3b5134c0aeb98311c04e20c5395d4347251746f3be0fb854f36cc7e118713cd00c9867537e6e47d5e71f2b2384fc00c67f0ae1b285b8310321579

  • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe

    Filesize

    42KB

    MD5

    9827ff3cdf4b83f9c86354606736ca9c

    SHA1

    e73d73f42bb2a310f03eb1bcbb22be2b8eb7c723

    SHA256

    c1cf3dc8fa1c7fc00f88e07ad539979b3706ca8d69223cffd1d58bc8f521f63a

    SHA512

    8261828d55f3b5134c0aeb98311c04e20c5395d4347251746f3be0fb854f36cc7e118713cd00c9867537e6e47d5e71f2b2384fc00c67f0ae1b285b8310321579

  • C:\Users\Admin\AppData\Local\Temp\b35bc50e-fc56-4239-a7d0-bb79118b31c9\AgileDotNetRT.dll

    Filesize

    94KB

    MD5

    14ff402962ad21b78ae0b4c43cd1f194

    SHA1

    f8a510eb26666e875a5bdd1cadad40602763ad72

    SHA256

    fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b

    SHA512

    daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b

  • C:\Users\Admin\AppData\Local\Temp\e34dd831-6d57-4d92-81ec-c008864dca6e\AgileDotNetRT.dll

    Filesize

    94KB

    MD5

    14ff402962ad21b78ae0b4c43cd1f194

    SHA1

    f8a510eb26666e875a5bdd1cadad40602763ad72

    SHA256

    fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b

    SHA512

    daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b

  • C:\Users\Admin\AppData\Local\Temp\e34dd831-6d57-4d92-81ec-c008864dca6e\AgileDotNetRT.dll

    Filesize

    94KB

    MD5

    14ff402962ad21b78ae0b4c43cd1f194

    SHA1

    f8a510eb26666e875a5bdd1cadad40602763ad72

    SHA256

    fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b

    SHA512

    daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b

  • C:\Users\Admin\AppData\Local\Temp\e34dd831-6d57-4d92-81ec-c008864dca6e\AgileDotNetRT.dll

    Filesize

    94KB

    MD5

    14ff402962ad21b78ae0b4c43cd1f194

    SHA1

    f8a510eb26666e875a5bdd1cadad40602763ad72

    SHA256

    fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b

    SHA512

    daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b

  • C:\Users\Admin\Desktop\.exe

    Filesize

    876KB

    MD5

    d0984b64a82a8564e0309ca82f581035

    SHA1

    18c8163ab1dddba15ecc8af94ee3d1a61c28cdef

    SHA256

    c20fa32bcec64fb853a75c8a25a185682a3ef4ed77f5cb1378512d0f942c077f

    SHA512

    b589f8b92fe9d08cedfadfece30848ec97c42123ce203a506dde326a0e2361fbb03ca4b2f69d2bb7915d17baed1c19e96906d1cba7f9d3fc14e2b86f8ac56416

  • C:\Users\Admin\Desktop\.exe

    Filesize

    876KB

    MD5

    d0984b64a82a8564e0309ca82f581035

    SHA1

    18c8163ab1dddba15ecc8af94ee3d1a61c28cdef

    SHA256

    c20fa32bcec64fb853a75c8a25a185682a3ef4ed77f5cb1378512d0f942c077f

    SHA512

    b589f8b92fe9d08cedfadfece30848ec97c42123ce203a506dde326a0e2361fbb03ca4b2f69d2bb7915d17baed1c19e96906d1cba7f9d3fc14e2b86f8ac56416

  • memory/224-150-0x0000000000780000-0x0000000000806000-memory.dmp

    Filesize

    536KB

  • memory/224-151-0x0000000005530000-0x0000000005596000-memory.dmp

    Filesize

    408KB

  • memory/224-155-0x0000000004DB3000-0x0000000004DB5000-memory.dmp

    Filesize

    8KB

  • memory/224-154-0x0000000006550000-0x000000000655A000-memory.dmp

    Filesize

    40KB

  • memory/224-153-0x0000000006610000-0x00000000066AC000-memory.dmp

    Filesize

    624KB

  • memory/224-152-0x0000000006410000-0x0000000006460000-memory.dmp

    Filesize

    320KB

  • memory/224-146-0x0000000000000000-mapping.dmp

  • memory/2044-138-0x0000000000000000-mapping.dmp

  • memory/3556-137-0x0000000000000000-mapping.dmp

  • memory/4564-133-0x0000000073190000-0x0000000073219000-memory.dmp

    Filesize

    548KB

  • memory/4564-131-0x00000000008E0000-0x00000000009C2000-memory.dmp

    Filesize

    904KB

  • memory/4564-134-0x0000000006490000-0x0000000006A34000-memory.dmp

    Filesize

    5.6MB

  • memory/4564-135-0x0000000005F80000-0x0000000006012000-memory.dmp

    Filesize

    584KB

  • memory/4564-136-0x0000000006370000-0x00000000063B4000-memory.dmp

    Filesize

    272KB

  • memory/4572-139-0x0000000000000000-mapping.dmp

  • memory/4572-144-0x0000000073190000-0x0000000073219000-memory.dmp

    Filesize

    548KB