Analysis

  • max time kernel
    147s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220310-en
  • submitted
    31/03/2022, 15:42

General

  • Target
    5C07027DF41A91D027A90FF85F445CC038127D8B035BB.exe
  • Size 4.6MB
  • Sample220331-s5bqpsebd8
  • SHA256 5c07027df41a91d027a90ff85f445cc038127d8b035bbfc6569644c1d4ec6156
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Blocklisted process makes network request 4 IoCs
  • 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.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Program crash 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5C07027DF41A91D027A90FF85F445CC038127D8B035BB.exe
    "C:\Users\Admin\AppData\Local\Temp\5C07027DF41A91D027A90FF85F445CC038127D8B035BB.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1080
    • C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\127BDD~1.DLL,A C:\Users\Admin\AppData\Local\Temp\5C0702~1.EXE
      2⤵
      • Loads dropped DLL
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1604
      • C:\Windows\SysWOW64\RUNDLL32.EXE
        C:\Windows\system32\RUNDLL32.EXE C:\Users\Admin\AppData\Local\Temp\127BDD~1.DLL,OR4bZA==
        3⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        • Suspicious use of AdjustPrivilegeToken
        PID:1108
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1080 -s 404
      2⤵
      • Program crash
      PID:3024
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1080 -ip 1080
    1⤵
      PID:1932

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          127BDD6947A8.dll

          • Path C:\Users\Admin\AppData\Local\Temp\127BDD6947A8.dll
          • Size 4.5MB
          • SHA256 7a9c21fbb90a59cf1e3f441da1bb50747d3640848b4e81633d681c4dcd3f2820
          • MD5 SHA1 SHA512 SSDEEP

          127BDD6947A8.dll

          • Path C:\Users\Admin\AppData\Local\Temp\127BDD6947A8.dll
          • Size 4.5MB
          • SHA256 7a9c21fbb90a59cf1e3f441da1bb50747d3640848b4e81633d681c4dcd3f2820
          • MD5 SHA1 SHA512 SSDEEP

          127BDD6947A8.dll

          • Path C:\Users\Admin\AppData\Local\Temp\127BDD6947A8.dll
          • Size 4.5MB
          • SHA256 7a9c21fbb90a59cf1e3f441da1bb50747d3640848b4e81633d681c4dcd3f2820
          • MD5 SHA1 SHA512 SSDEEP

          127BDD~1.DLL

          • Path C:\Users\Admin\AppData\Local\Temp\127BDD~1.DLL
          • Size 4.5MB
          • SHA256 7a9c21fbb90a59cf1e3f441da1bb50747d3640848b4e81633d681c4dcd3f2820
          • MD5 SHA1 SHA512 SSDEEP

          memory/1080-137-0x0000000000400000-0x0000000003430000-memory.dmp

          memory/1080-134-0x000000000533D000-0x00000000057C1000-memory.dmp

          memory/1080-135-0x00000000057D0000-0x0000000005CE3000-memory.dmp

          memory/1108-146-0x0000000002130000-0x00000000025C2000-memory.dmp

          memory/1108-148-0x0000000002B50000-0x00000000031A8000-memory.dmp

          memory/1108-149-0x0000000003300000-0x0000000003301000-memory.dmp

          memory/1108-150-0x0000000002B50000-0x00000000031A8000-memory.dmp

          memory/1604-140-0x0000000002E80000-0x00000000034D8000-memory.dmp

          memory/1604-147-0x0000000002E80000-0x00000000034D8000-memory.dmp