Analysis

  • max time kernel
    148s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220721-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-07-2022 10:46

General

  • Target

    FFD551A66208B73CEE933FC4E27C449B8EABB0ACB0FE2.exe

  • Size

    5.2MB

  • MD5

    f7389b83ba7eaedeae31eda31412db06

  • SHA1

    ccfd2e456ccf2c8cc24942797805ad4d15a6d860

  • SHA256

    ffd551a66208b73cee933fc4e27c449b8eabb0acb0fe27ad251844e2fb8821d1

  • SHA512

    ac7f8ef5e4736e6fcb0f54c88761095dbcb09cec44d35b1efcfb7cbc03341049fc55410ad49925399ea8e56ea02d5c1ad1c20fb4c344d3027fbb7873f45aa4a9

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    157.230.124.151
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    chichi001

Signatures

  • AgentTesla

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

  • NetWire RAT payload 3 IoCs
  • Netwire

    Netwire is a RAT with main functionalities focused password stealing and keylogging, but also includes remote control capabilities as well.

  • AgentTesla payload 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • 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 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\FFD551A66208B73CEE933FC4E27C449B8EABB0ACB0FE2.exe
    "C:\Users\Admin\AppData\Local\Temp\FFD551A66208B73CEE933FC4E27C449B8EABB0ACB0FE2.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3628
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c, "C:\Users\Admin\AppData\Roaming\orijan23.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2604
      • C:\Users\Admin\AppData\Roaming\orijan23.exe
        "C:\Users\Admin\AppData\Roaming\orijan23.exe"
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4164
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Roaming\orijan23.exe" "C:\Users\Admin\AppData\Roaming\isud.exe"
          4⤵
            PID:848
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c, "C:\Users\Admin\AppData\Roaming\isud.exe"
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:4824
            • C:\Users\Admin\AppData\Roaming\isud.exe
              "C:\Users\Admin\AppData\Roaming\isud.exe"
              5⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • Suspicious use of SetThreadContext
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:5020
              • C:\Users\Admin\AppData\Roaming\isud.exe
                "C:\Users\Admin\AppData\Roaming\isud.exe"
                6⤵
                • Executes dropped EXE
                • Accesses Microsoft Outlook profiles
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of SetWindowsHookEx
                • outlook_office_path
                • outlook_win_path
                PID:2660
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\FFD551A66208B73CEE933FC4E27C449B8EABB0ACB0FE2.exe" "C:\Users\Admin\AppData\Roaming\llij.exe"
        2⤵
          PID:4408
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c, "C:\Users\Admin\AppData\Roaming\llij.exe"
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1500
          • C:\Users\Admin\AppData\Roaming\llij.exe
            "C:\Users\Admin\AppData\Roaming\llij.exe"
            3⤵
            • Executes dropped EXE
            • Drops startup file
            • Suspicious use of SetThreadContext
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2128
            • C:\Users\Admin\AppData\Roaming\llij.exe
              "C:\Users\Admin\AppData\Roaming\llij.exe"
              4⤵
              • Executes dropped EXE
              PID:220
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 220 -s 316
                5⤵
                • Program crash
                PID:4632
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 220 -ip 220
        1⤵
          PID:3404

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\isud.exe.log

          Filesize

          903B

          MD5

          e561cf4d9ef3a0bcc94f3c4ddefbd8d7

          SHA1

          5476485c0050217f99370f52f37edfaf5858463c

          SHA256

          f87cef121c3fe8abf16d5f787a4848523ce016b15482eb82051293da3c8db086

          SHA512

          22f569c8748c017aa7b05a305009b3d353dd04bc8997e9d31722a733708cf5f2264d5f28a60beacc7248e4070b979f69a1fb9e61d08289cbbd21985563098743

        • C:\Users\Admin\AppData\Roaming\isud.exe

          Filesize

          1.3MB

          MD5

          2d5da0b865fc3e5800402a0c2fb63920

          SHA1

          14625c0835dcd3a904372a0e805e39303a4d9ecb

          SHA256

          ec0e9584d2523f23746d30005c2fd08a2ee70311d169792447c6c09f02614b81

          SHA512

          efff3d9adcea59bddc772af7d5372853de4e92e232e7380d813d3d0f8f70c60729e5853424b79e64e5aea288dfe4b1eaa49adc78d829352f0a4ea8a371451365

        • C:\Users\Admin\AppData\Roaming\isud.exe

          Filesize

          1.3MB

          MD5

          2d5da0b865fc3e5800402a0c2fb63920

          SHA1

          14625c0835dcd3a904372a0e805e39303a4d9ecb

          SHA256

          ec0e9584d2523f23746d30005c2fd08a2ee70311d169792447c6c09f02614b81

          SHA512

          efff3d9adcea59bddc772af7d5372853de4e92e232e7380d813d3d0f8f70c60729e5853424b79e64e5aea288dfe4b1eaa49adc78d829352f0a4ea8a371451365

        • C:\Users\Admin\AppData\Roaming\isud.exe

          Filesize

          1.3MB

          MD5

          2d5da0b865fc3e5800402a0c2fb63920

          SHA1

          14625c0835dcd3a904372a0e805e39303a4d9ecb

          SHA256

          ec0e9584d2523f23746d30005c2fd08a2ee70311d169792447c6c09f02614b81

          SHA512

          efff3d9adcea59bddc772af7d5372853de4e92e232e7380d813d3d0f8f70c60729e5853424b79e64e5aea288dfe4b1eaa49adc78d829352f0a4ea8a371451365

        • C:\Users\Admin\AppData\Roaming\llij.exe

          Filesize

          5.2MB

          MD5

          f7389b83ba7eaedeae31eda31412db06

          SHA1

          ccfd2e456ccf2c8cc24942797805ad4d15a6d860

          SHA256

          ffd551a66208b73cee933fc4e27c449b8eabb0acb0fe27ad251844e2fb8821d1

          SHA512

          ac7f8ef5e4736e6fcb0f54c88761095dbcb09cec44d35b1efcfb7cbc03341049fc55410ad49925399ea8e56ea02d5c1ad1c20fb4c344d3027fbb7873f45aa4a9

        • C:\Users\Admin\AppData\Roaming\llij.exe

          Filesize

          5.2MB

          MD5

          f7389b83ba7eaedeae31eda31412db06

          SHA1

          ccfd2e456ccf2c8cc24942797805ad4d15a6d860

          SHA256

          ffd551a66208b73cee933fc4e27c449b8eabb0acb0fe27ad251844e2fb8821d1

          SHA512

          ac7f8ef5e4736e6fcb0f54c88761095dbcb09cec44d35b1efcfb7cbc03341049fc55410ad49925399ea8e56ea02d5c1ad1c20fb4c344d3027fbb7873f45aa4a9

        • C:\Users\Admin\AppData\Roaming\llij.exe

          Filesize

          5.2MB

          MD5

          f7389b83ba7eaedeae31eda31412db06

          SHA1

          ccfd2e456ccf2c8cc24942797805ad4d15a6d860

          SHA256

          ffd551a66208b73cee933fc4e27c449b8eabb0acb0fe27ad251844e2fb8821d1

          SHA512

          ac7f8ef5e4736e6fcb0f54c88761095dbcb09cec44d35b1efcfb7cbc03341049fc55410ad49925399ea8e56ea02d5c1ad1c20fb4c344d3027fbb7873f45aa4a9

        • C:\Users\Admin\AppData\Roaming\orijan23.exe

          Filesize

          1.3MB

          MD5

          2d5da0b865fc3e5800402a0c2fb63920

          SHA1

          14625c0835dcd3a904372a0e805e39303a4d9ecb

          SHA256

          ec0e9584d2523f23746d30005c2fd08a2ee70311d169792447c6c09f02614b81

          SHA512

          efff3d9adcea59bddc772af7d5372853de4e92e232e7380d813d3d0f8f70c60729e5853424b79e64e5aea288dfe4b1eaa49adc78d829352f0a4ea8a371451365

        • C:\Users\Admin\AppData\Roaming\orijan23.exe

          Filesize

          1.3MB

          MD5

          2d5da0b865fc3e5800402a0c2fb63920

          SHA1

          14625c0835dcd3a904372a0e805e39303a4d9ecb

          SHA256

          ec0e9584d2523f23746d30005c2fd08a2ee70311d169792447c6c09f02614b81

          SHA512

          efff3d9adcea59bddc772af7d5372853de4e92e232e7380d813d3d0f8f70c60729e5853424b79e64e5aea288dfe4b1eaa49adc78d829352f0a4ea8a371451365

        • C:\Users\Admin\Documents\orijan23.txt

          Filesize

          32B

          MD5

          b41566341029c6b54305e634392aeb15

          SHA1

          76f3e3c6c7814fff265710b93af1e2109d6ec6f9

          SHA256

          9c797e062cd7946612fdf00b4368ba1b2ba1ca1996cb7b1e0e7c6918f85e4a17

          SHA512

          6fd4541d89eec59e382e03a2d5b3228a020ba6d3245756010070ebf3b1f6c7a28586dc1bee11b0cfc8610c807b2a69e748f67f2458c6d5f6c0a584634c629a53

        • memory/220-162-0x0000000000790000-0x00000000007BB000-memory.dmp

          Filesize

          172KB

        • memory/220-158-0x0000000000790000-0x00000000007BB000-memory.dmp

          Filesize

          172KB

        • memory/220-155-0x0000000000790000-0x00000000007BB000-memory.dmp

          Filesize

          172KB

        • memory/220-153-0x0000000000400000-0x000000000042B000-memory.dmp

          Filesize

          172KB

        • memory/220-152-0x0000000000000000-mapping.dmp

        • memory/848-145-0x0000000000000000-mapping.dmp

        • memory/1500-141-0x0000000000000000-mapping.dmp

        • memory/2128-142-0x0000000000000000-mapping.dmp

        • memory/2128-151-0x000000000B5D0000-0x000000000B66C000-memory.dmp

          Filesize

          624KB

        • memory/2604-135-0x0000000000000000-mapping.dmp

        • memory/2660-167-0x00000000069B0000-0x00000000069BA000-memory.dmp

          Filesize

          40KB

        • memory/2660-164-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/2660-163-0x0000000000000000-mapping.dmp

        • memory/3628-133-0x00000000064F0000-0x0000000006534000-memory.dmp

          Filesize

          272KB

        • memory/3628-130-0x0000000000E60000-0x0000000001394000-memory.dmp

          Filesize

          5.2MB

        • memory/3628-134-0x0000000006760000-0x00000000067C6000-memory.dmp

          Filesize

          408KB

        • memory/3628-132-0x0000000006AA0000-0x0000000007044000-memory.dmp

          Filesize

          5.6MB

        • memory/3628-131-0x0000000006450000-0x00000000064E2000-memory.dmp

          Filesize

          584KB

        • memory/4164-136-0x0000000000000000-mapping.dmp

        • memory/4164-139-0x0000000000DB0000-0x0000000000EF8000-memory.dmp

          Filesize

          1.3MB

        • memory/4408-140-0x0000000000000000-mapping.dmp

        • memory/4824-146-0x0000000000000000-mapping.dmp

        • memory/5020-147-0x0000000000000000-mapping.dmp