Analysis

  • max time kernel
    149s
  • max time network
    51s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-04-2024 18:33

General

  • Target

    0cb3026b28ab359211f50176bc8f920884474445331155c4b9a3d5bc11f93266.exe

  • Size

    271KB

  • MD5

    e94d9a5d0a03d3f2bf241a50eea621bc

  • SHA1

    1e915cbf1017cf35ad92c3c06f96b7719062e156

  • SHA256

    0cb3026b28ab359211f50176bc8f920884474445331155c4b9a3d5bc11f93266

  • SHA512

    2154f9e4f349842217bb97c4e497a91eee6ab3789a6c1f1c7e926e8877a021e496efc61ee69a2e8d5128f47171a204f98a8e262bd30ea557880a0d4eaf85944c

  • SSDEEP

    6144:/rTfUHeeSKOS9ccFKk3Y9t9YZfnVUBTUeg:/n8yN0Mr8ZfnVUBTTg

Malware Config

Signatures

  • UPX dump on OEP (original entry point) 29 IoCs
  • Checks computer location settings 2 TTPs 8 IoCs

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

  • Executes dropped EXE 6 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 32 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0cb3026b28ab359211f50176bc8f920884474445331155c4b9a3d5bc11f93266.exe
    "C:\Users\Admin\AppData\Local\Temp\0cb3026b28ab359211f50176bc8f920884474445331155c4b9a3d5bc11f93266.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4296
    • C:\Users\Public\Microsoft Build\Isass.exe
      "C:\Users\Public\Microsoft Build\Isass.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      PID:3368
    • C:\Users\Public\Microsoft Build\Isass.exe
      "C:\Users\Public\Microsoft Build\Isass.exe" Tablet C:\Users\Admin\AppData\Local\Temp\0cb3026b28ab359211f50176bc8f920884474445331155c4b9a3d5bc11f93266.exe
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2040
      • C:\Users\Admin\AppData\Local\Temp\0cb3026b28ab359211f50176bc8f920884474445331155c4b9a3d5bc11f93266.exe
        "C:\Users\Admin\AppData\Local\Temp\0cb3026b28ab359211f50176bc8f920884474445331155c4b9a3d5bc11f93266.exe"
        3⤵
        • Checks computer location settings
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:2096
        • C:\Users\Public\Microsoft Build\Isass.exe
          "C:\Users\Public\Microsoft Build\Isass.exe" Tablet C:\Users\Admin\AppData\Local\Temp\0cb3026b28ab359211f50176bc8f920884474445331155c4b9a3d5bc11f93266.exe
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2956
          • C:\Users\Admin\AppData\Local\Temp\0cb3026b28ab359211f50176bc8f920884474445331155c4b9a3d5bc11f93266.exe
            "C:\Users\Admin\AppData\Local\Temp\0cb3026b28ab359211f50176bc8f920884474445331155c4b9a3d5bc11f93266.exe"
            5⤵
            • Checks computer location settings
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of WriteProcessMemory
            PID:4904
            • C:\Users\Public\Microsoft Build\Isass.exe
              "C:\Users\Public\Microsoft Build\Isass.exe" Tablet C:\Users\Admin\AppData\Local\Temp\0cb3026b28ab359211f50176bc8f920884474445331155c4b9a3d5bc11f93266.exe
              6⤵
              • Checks computer location settings
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:2472
              • C:\Users\Admin\AppData\Local\Temp\0cb3026b28ab359211f50176bc8f920884474445331155c4b9a3d5bc11f93266.exe
                "C:\Users\Admin\AppData\Local\Temp\0cb3026b28ab359211f50176bc8f920884474445331155c4b9a3d5bc11f93266.exe"
                7⤵
                • Checks computer location settings
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of WriteProcessMemory
                PID:2108
                • C:\Users\Public\Microsoft Build\Isass.exe
                  "C:\Users\Public\Microsoft Build\Isass.exe" Tablet C:\Users\Admin\AppData\Local\Temp\0cb3026b28ab359211f50176bc8f920884474445331155c4b9a3d5bc11f93266.exe
                  8⤵
                  • Checks computer location settings
                  • Executes dropped EXE
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of WriteProcessMemory
                  PID:2284
                  • C:\Users\Admin\AppData\Local\Temp\0cb3026b28ab359211f50176bc8f920884474445331155c4b9a3d5bc11f93266.exe
                    "C:\Users\Admin\AppData\Local\Temp\0cb3026b28ab359211f50176bc8f920884474445331155c4b9a3d5bc11f93266.exe"
                    9⤵
                    • Executes dropped EXE
                    PID:2220

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe

    Filesize

    688KB

    MD5

    c4e802bea3b1eed302252031520d426c

    SHA1

    20ea9d0fd8b00ba778c97f24227250a22abce417

    SHA256

    54fe4d21c5179ffaf6758c7b85d03c91a1fc64d540df172989c22e9a3fa69ef0

    SHA512

    68857ae63e9cbeeef8a89aa9b8ed8c2ffef5f789779591cfcb2552cd865f302830e29c0235334e8e54d90fa81a5f3585497d69de0e2adbefb328590436e489e2

  • C:\Users\Admin\AppData\Local\Temp\0cb3026b28ab359211f50176bc8f920884474445331155c4b9a3d5bc11f93266.exe

    Filesize

    37KB

    MD5

    371627fd939bb54ed26f473ca54e718f

    SHA1

    3a6910295ae9d1fe388b7572736b8bdfc6e0d111

    SHA256

    b5481e424246a174456add0132427df3a7cd4105f5769835cdf597966c7c0b61

    SHA512

    ff7ea5ae445089ffa808c97e23c620313dd267994b343176c0cb9f8098aace1d12d9212b96611fdf97c974ef94f866b817aed9c0e5f4f195234e7d8d4ec3f8cd

  • C:\Users\Public\Microsoft Build\Isass.exe

    Filesize

    216KB

    MD5

    5e0cf203964abafa22d81a923be95cb9

    SHA1

    e066b6d4a7739fef41c63521435ee3f735fe17b8

    SHA256

    08df8fa4184b52bd2d853adf15ce9e2926abf25a8a2f805845fd4d85a8ade74f

    SHA512

    78245760d831fd173a504cde12d1b2200ed7e6891afbb129a7bdc67784a50a0fc86dc7caf46286c74ddf3fa43c74558f21925f9c0eef872ed25644496a6dd26b

  • memory/2040-10-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/2040-11-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/2096-12-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/2096-15-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/2108-21-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/2220-34-0x0000000000A10000-0x0000000000A1E000-memory.dmp

    Filesize

    56KB

  • memory/2284-32-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/2472-19-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/2956-16-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/3368-62-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/3368-46-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/3368-6-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/3368-91-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/3368-82-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/3368-36-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/3368-39-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/3368-40-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/3368-41-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/3368-81-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/3368-45-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/3368-7-0x0000000003710000-0x0000000003711000-memory.dmp

    Filesize

    4KB

  • memory/3368-54-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/3368-55-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/3368-61-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/3368-70-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/3368-69-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/4296-9-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/4296-2-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB

  • memory/4296-3-0x0000000001AA0000-0x0000000001AA1000-memory.dmp

    Filesize

    4KB

  • memory/4904-18-0x0000000000400000-0x00000000016A8E52-memory.dmp

    Filesize

    18.7MB