Analysis

  • max time kernel
    139s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    15/07/2021, 09:44

General

  • Target
    5f5975aa54916c31a205ae5c29c0bfe2.exe
  • Size 368KB
  • Sample210715-letdbzjsba
  • SHA256 043544fc666b260b348dbd6c004ac8a76c62418e34b3330e6d0a1fac1dfc3f9f
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • warzonerat

C2
  • sdafsdffssffs.ydns.eu:6703

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • WarzoneRat, AveMaria

    WarzoneRat is a native RAT developed in C++ with multiple plugins sold as a MaaS.

  • AgentTesla Payload 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 4 IoCs
  • Sets DLL path for service in the registry 2 TTPs
  • Loads dropped DLL 11 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Modifies WinLogon 2 TTPs 4 IoCs
  • Drops file in System32 directory 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 26 IoCs
  • Suspicious behavior: LoadsDriver 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5f5975aa54916c31a205ae5c29c0bfe2.exe
    "C:\Users\Admin\AppData\Local\Temp\5f5975aa54916c31a205ae5c29c0bfe2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1700
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Test-Connection www.yahoo.com
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:884
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Test-Connection www.yahoo.com
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1236
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Test-Connection www.yahoo.com
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:908
    • C:\Users\Admin\AppData\Local\Temp\5f5975aa54916c31a205ae5c29c0bfe2.exe
      C:\Users\Admin\AppData\Local\Temp\5f5975aa54916c31a205ae5c29c0bfe2.exe
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1952
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows" /f /v Load /t REG_SZ /d "C:\ProgramData\images.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:568
        • C:\Windows\SysWOW64\reg.exe
          REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows" /f /v Load /t REG_SZ /d "C:\ProgramData\images.exe"
          4⤵
            PID:704
        • C:\ProgramData\images.exe
          "C:\ProgramData\images.exe"
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:524
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Test-Connection www.yahoo.com
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:1936
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Test-Connection www.yahoo.com
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:1100
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Test-Connection www.yahoo.com
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:1876
          • C:\Users\Admin\AppData\Local\Temp\images.exe
            C:\Users\Admin\AppData\Local\Temp\images.exe
            4⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies WinLogon
            • Drops file in System32 directory
            • Drops file in Program Files directory
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:1220
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\System32\cmd.exe"
              5⤵
                PID:1840
              • C:\Users\Admin\AppData\Roaming\yiqBGcxHd.exe
                "C:\Users\Admin\AppData\Roaming\yiqBGcxHd.exe"
                5⤵
                • Executes dropped EXE
                • Loads dropped DLL
                • Suspicious use of SetThreadContext
                • Suspicious behavior: EnumeratesProcesses
                PID:1656
                • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Test-Connection www.yahoo.com
                  6⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:1672
                • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Test-Connection www.yahoo.com
                  6⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:484
                • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Test-Connection www.yahoo.com
                  6⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:1236
                • C:\Users\Admin\AppData\Local\Temp\yiqBGcxHd.exe
                  C:\Users\Admin\AppData\Local\Temp\yiqBGcxHd.exe
                  6⤵
                  • Executes dropped EXE
                  • Suspicious behavior: EnumeratesProcesses
                  PID:1120

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            memory/484-215-0x0000000001062000-0x0000000001063000-memory.dmp

            memory/484-214-0x0000000001060000-0x0000000001061000-memory.dmp

            memory/524-138-0x0000000000AC0000-0x0000000000AC1000-memory.dmp

            memory/524-135-0x00000000013B0000-0x00000000013B1000-memory.dmp

            memory/884-69-0x0000000001050000-0x0000000001051000-memory.dmp

            memory/884-68-0x0000000004852000-0x0000000004853000-memory.dmp

            memory/884-88-0x0000000006680000-0x0000000006681000-memory.dmp

            memory/884-65-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

            memory/884-87-0x000000007EF30000-0x000000007EF31000-memory.dmp

            memory/884-78-0x00000000060C0000-0x00000000060C1000-memory.dmp

            memory/884-66-0x0000000004890000-0x0000000004891000-memory.dmp

            memory/884-86-0x0000000006280000-0x0000000006281000-memory.dmp

            memory/884-79-0x00000000061E0000-0x00000000061E1000-memory.dmp

            memory/884-70-0x0000000005280000-0x0000000005281000-memory.dmp

            memory/884-64-0x0000000075011000-0x0000000075013000-memory.dmp

            memory/884-67-0x0000000004850000-0x0000000004851000-memory.dmp

            memory/884-73-0x0000000005FC0000-0x0000000005FC1000-memory.dmp

            memory/908-122-0x0000000004852000-0x0000000004853000-memory.dmp

            memory/908-116-0x0000000000F00000-0x0000000000F01000-memory.dmp

            memory/908-127-0x0000000005720000-0x0000000005721000-memory.dmp

            memory/908-120-0x00000000011C0000-0x00000000011C1000-memory.dmp

            memory/908-126-0x0000000005300000-0x0000000005301000-memory.dmp

            memory/908-129-0x0000000006410000-0x0000000006411000-memory.dmp

            memory/908-121-0x0000000004850000-0x0000000004851000-memory.dmp

            memory/908-117-0x0000000004890000-0x0000000004891000-memory.dmp

            memory/1100-160-0x00000000062B0000-0x00000000062B1000-memory.dmp

            memory/1100-154-0x0000000004A40000-0x0000000004A41000-memory.dmp

            memory/1100-156-0x0000000005300000-0x0000000005301000-memory.dmp

            memory/1100-157-0x0000000004A00000-0x0000000004A01000-memory.dmp

            memory/1100-158-0x0000000004A02000-0x0000000004A03000-memory.dmp

            memory/1100-159-0x0000000006100000-0x0000000006101000-memory.dmp

            memory/1100-153-0x0000000000B90000-0x0000000000B91000-memory.dmp

            memory/1120-240-0x00000000044D0000-0x00000000044D1000-memory.dmp

            memory/1220-243-0x0000000004920000-0x0000000004AE4000-memory.dmp

            memory/1220-181-0x0000000000400000-0x000000000055E000-memory.dmp

            memory/1220-187-0x0000000003090000-0x0000000003190000-memory.dmp

            memory/1236-97-0x0000000004972000-0x0000000004973000-memory.dmp

            memory/1236-96-0x0000000004970000-0x0000000004971000-memory.dmp

            memory/1236-95-0x0000000005300000-0x0000000005301000-memory.dmp

            memory/1236-229-0x0000000002520000-0x000000000316A000-memory.dmp

            memory/1236-94-0x0000000001210000-0x0000000001211000-memory.dmp

            memory/1236-230-0x0000000002520000-0x000000000316A000-memory.dmp

            memory/1236-93-0x00000000049B0000-0x00000000049B1000-memory.dmp

            memory/1236-92-0x0000000000D70000-0x0000000000D71000-memory.dmp

            memory/1236-108-0x00000000063E0000-0x00000000063E1000-memory.dmp

            memory/1236-105-0x00000000060B0000-0x00000000060B1000-memory.dmp

            memory/1656-194-0x0000000004910000-0x0000000004911000-memory.dmp

            memory/1672-204-0x0000000004972000-0x0000000004973000-memory.dmp

            memory/1672-203-0x0000000004970000-0x0000000004971000-memory.dmp

            memory/1700-119-0x0000000005A70000-0x0000000005AC8000-memory.dmp

            memory/1700-60-0x0000000001260000-0x0000000001261000-memory.dmp

            memory/1700-62-0x0000000001180000-0x0000000001181000-memory.dmp

            memory/1700-110-0x0000000004D80000-0x0000000004DC7000-memory.dmp

            memory/1876-180-0x0000000004A32000-0x0000000004A33000-memory.dmp

            memory/1876-179-0x0000000004A30000-0x0000000004A31000-memory.dmp

            memory/1936-145-0x0000000004812000-0x0000000004813000-memory.dmp

            memory/1936-146-0x0000000005200000-0x0000000005201000-memory.dmp

            memory/1936-143-0x0000000004850000-0x0000000004851000-memory.dmp

            memory/1936-142-0x0000000002260000-0x0000000002261000-memory.dmp

            memory/1936-144-0x0000000004810000-0x0000000004811000-memory.dmp

            memory/1936-147-0x0000000005340000-0x0000000005341000-memory.dmp

            memory/1952-128-0x0000000000400000-0x000000000055E000-memory.dmp

            memory/1952-123-0x0000000000400000-0x000000000055E000-memory.dmp