Analysis

  • max time kernel
    150s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    06/08/2021, 13:45

General

  • Target

    BL#TELEX-SHIPMENT-POC76120.exe

  • Size

    838KB

  • MD5

    79076256e795c9399e830f1e4f0fe221

  • SHA1

    6bc1068223a0238b595bc6b9e145be9aaafea085

  • SHA256

    bd0328f6be16f7c73f39a16739960a069d4812943cfbc93000bbe2a3eed45039

  • SHA512

    3e056a19d0b3bd3227318f635a48ab9d7a1b1373f689a3d4be1b64e19815602209571618ebdc386f5fe072f00706fe17d48598b725f3e28a89b993d98326111a

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.themainreport.co.nz
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    -I;MGhTyL{AQ

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\BL#TELEX-SHIPMENT-POC76120.exe
    "C:\Users\Admin\AppData\Local\Temp\BL#TELEX-SHIPMENT-POC76120.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1036
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\BL#TELEX-SHIPMENT-POC76120.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:596
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\apZSuwq.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1148
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\apZSuwq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp32B4.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:972
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\apZSuwq.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:836
    • C:\Users\Admin\AppData\Local\Temp\BL#TELEX-SHIPMENT-POC76120.exe
      "C:\Users\Admin\AppData\Local\Temp\BL#TELEX-SHIPMENT-POC76120.exe"
      2⤵
        PID:928
      • C:\Users\Admin\AppData\Local\Temp\BL#TELEX-SHIPMENT-POC76120.exe
        "C:\Users\Admin\AppData\Local\Temp\BL#TELEX-SHIPMENT-POC76120.exe"
        2⤵
        • Loads dropped DLL
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:240
        • C:\Users\Admin\AppData\Local\Temp\apwxc.exe
          "C:\Users\Admin\AppData\Local\Temp\apwxc.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:1648
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\apwxc.exe"
            4⤵
              PID:332
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ImauUieIe.exe"
              4⤵
                PID:1056
              • C:\Windows\SysWOW64\schtasks.exe
                "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ImauUieIe" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC9D4.tmp"
                4⤵
                • Creates scheduled task(s)
                PID:396
              • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ImauUieIe.exe"
                4⤵
                  PID:388
                • C:\Users\Admin\AppData\Local\Temp\apwxc.exe
                  "C:\Users\Admin\AppData\Local\Temp\apwxc.exe"
                  4⤵
                    PID:596

            Network

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

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                  Downloads

                  • memory/240-77-0x0000000000400000-0x000000000043C000-memory.dmp

                    Filesize

                    240KB

                  • memory/240-80-0x0000000000400000-0x000000000043C000-memory.dmp

                    Filesize

                    240KB

                  • memory/240-92-0x0000000000460000-0x0000000000461000-memory.dmp

                    Filesize

                    4KB

                  • memory/332-162-0x0000000000ED0000-0x0000000000ED1000-memory.dmp

                    Filesize

                    4KB

                  • memory/332-163-0x0000000004A60000-0x0000000004A61000-memory.dmp

                    Filesize

                    4KB

                  • memory/596-84-0x00000000024E0000-0x00000000024E1000-memory.dmp

                    Filesize

                    4KB

                  • memory/596-90-0x00000000047B2000-0x00000000047B3000-memory.dmp

                    Filesize

                    4KB

                  • memory/596-72-0x0000000001EB0000-0x0000000001EB1000-memory.dmp

                    Filesize

                    4KB

                  • memory/596-87-0x00000000047B0000-0x00000000047B1000-memory.dmp

                    Filesize

                    4KB

                  • memory/596-66-0x0000000075721000-0x0000000075723000-memory.dmp

                    Filesize

                    8KB

                  • memory/836-93-0x0000000001EB0000-0x0000000002AFA000-memory.dmp

                    Filesize

                    12.3MB

                  • memory/1036-59-0x0000000000110000-0x0000000000111000-memory.dmp

                    Filesize

                    4KB

                  • memory/1036-61-0x0000000002200000-0x0000000002201000-memory.dmp

                    Filesize

                    4KB

                  • memory/1036-62-0x0000000000370000-0x0000000000383000-memory.dmp

                    Filesize

                    76KB

                  • memory/1036-64-0x0000000002180000-0x00000000021B9000-memory.dmp

                    Filesize

                    228KB

                  • memory/1036-63-0x0000000005770000-0x0000000005802000-memory.dmp

                    Filesize

                    584KB

                  • memory/1056-168-0x0000000004842000-0x0000000004843000-memory.dmp

                    Filesize

                    4KB

                  • memory/1056-166-0x0000000004840000-0x0000000004841000-memory.dmp

                    Filesize

                    4KB

                  • memory/1148-119-0x00000000061A0000-0x00000000061A1000-memory.dmp

                    Filesize

                    4KB

                  • memory/1148-89-0x00000000048B0000-0x00000000048B1000-memory.dmp

                    Filesize

                    4KB

                  • memory/1148-74-0x00000000048F0000-0x00000000048F1000-memory.dmp

                    Filesize

                    4KB

                  • memory/1148-99-0x00000000056B0000-0x00000000056B1000-memory.dmp

                    Filesize

                    4KB

                  • memory/1148-104-0x00000000056F0000-0x00000000056F1000-memory.dmp

                    Filesize

                    4KB

                  • memory/1148-105-0x00000000060E0000-0x00000000060E1000-memory.dmp

                    Filesize

                    4KB

                  • memory/1148-112-0x0000000006200000-0x0000000006201000-memory.dmp

                    Filesize

                    4KB

                  • memory/1148-91-0x00000000048B2000-0x00000000048B3000-memory.dmp

                    Filesize

                    4KB

                  • memory/1148-136-0x000000007EF30000-0x000000007EF31000-memory.dmp

                    Filesize

                    4KB

                  • memory/1148-135-0x0000000006310000-0x0000000006311000-memory.dmp

                    Filesize

                    4KB

                  • memory/1148-134-0x0000000006300000-0x0000000006301000-memory.dmp

                    Filesize

                    4KB

                  • memory/1148-94-0x0000000004790000-0x0000000004791000-memory.dmp

                    Filesize

                    4KB

                  • memory/1648-155-0x0000000001F60000-0x0000000001F93000-memory.dmp

                    Filesize

                    204KB

                  • memory/1648-154-0x0000000009290000-0x000000000932A000-memory.dmp

                    Filesize

                    616KB

                  • memory/1648-153-0x0000000000390000-0x000000000039D000-memory.dmp

                    Filesize

                    52KB

                  • memory/1648-152-0x0000000004D00000-0x0000000004D01000-memory.dmp

                    Filesize

                    4KB

                  • memory/1648-150-0x00000000003B0000-0x00000000003B1000-memory.dmp

                    Filesize

                    4KB