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Analysis

  • max time kernel
    94s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/01/2025, 01:40

General

  • Target

    66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe

  • Size

    1.4MB

  • MD5

    81b6c3bc8ffb62a5301ae6a3fe7298e5

  • SHA1

    2e4dccda2cacb626fe0fb511a942692ffb949789

  • SHA256

    66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e

  • SHA512

    6eeed543341a7430b8104eeeef271cf95cf4897c8d6488c06da6ab6d6118d31f9653998b52105f3af4d98543f7c8fa5a0218bbd993dc0da012396bba33fb908a

  • SSDEEP

    24576:Z+kwnmSMDo5tW0ak+9BVaFcfv1RIAhjLoamMiX4lNmZg0YxegPbUIDPP:ZBwnZMOaxOSJjLoyEkmZ9Y14

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Agenttesla family
  • Drops file in Drivers directory 1 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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 3 TTPs

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

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe
    "C:\Users\Admin\AppData\Local\Temp\66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4496
    • C:\Users\Admin\AppData\Local\Temp\66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe
      "C:\Users\Admin\AppData\Local\Temp\66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe"
      2⤵
      • Drops file in Drivers directory
      • Accesses Microsoft Outlook profiles
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:636
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 636 -s 1184
        3⤵
        • Program crash
        PID:2880
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 636 -ip 636
    1⤵
      PID:4300

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\66d55aed217ab100b55b3a975cdc89cce644c32f3d27cc202f68b3404b67c53e.exe.log

      Filesize

      1KB

      MD5

      e08f822522c617a40840c62e4b0fb45e

      SHA1

      ae516dca4da5234be6676d3f234c19ec55725be7

      SHA256

      bd9d5e9f7fe6fcff17d873555d4077d15f7d6cdda1183e7f7d278b735ffe1fd7

      SHA512

      894a7fb7bbc18ac6ba13378f58a7db80ad00d6080be9a66b01cae8e23e41d9d2d4cd53c1e20669356b73590c8a3ebfda4bdda3258f81240db56c4a81b7313fe4

    • memory/636-13-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/636-22-0x0000000074660000-0x0000000074E10000-memory.dmp

      Filesize

      7.7MB

    • memory/636-21-0x00000000068C0000-0x0000000006910000-memory.dmp

      Filesize

      320KB

    • memory/636-19-0x0000000005770000-0x0000000005788000-memory.dmp

      Filesize

      96KB

    • memory/636-18-0x0000000074660000-0x0000000074E10000-memory.dmp

      Filesize

      7.7MB

    • memory/636-16-0x0000000074660000-0x0000000074E10000-memory.dmp

      Filesize

      7.7MB

    • memory/4496-4-0x0000000074660000-0x0000000074E10000-memory.dmp

      Filesize

      7.7MB

    • memory/4496-6-0x0000000005B30000-0x0000000005B46000-memory.dmp

      Filesize

      88KB

    • memory/4496-9-0x0000000007FD0000-0x000000000806C000-memory.dmp

      Filesize

      624KB

    • memory/4496-10-0x0000000008180000-0x0000000008216000-memory.dmp

      Filesize

      600KB

    • memory/4496-11-0x00000000082D0000-0x0000000008336000-memory.dmp

      Filesize

      408KB

    • memory/4496-12-0x0000000008260000-0x000000000829C000-memory.dmp

      Filesize

      240KB

    • memory/4496-7-0x000000007466E000-0x000000007466F000-memory.dmp

      Filesize

      4KB

    • memory/4496-8-0x0000000074660000-0x0000000074E10000-memory.dmp

      Filesize

      7.7MB

    • memory/4496-0-0x000000007466E000-0x000000007466F000-memory.dmp

      Filesize

      4KB

    • memory/4496-17-0x0000000074660000-0x0000000074E10000-memory.dmp

      Filesize

      7.7MB

    • memory/4496-5-0x0000000005720000-0x000000000572A000-memory.dmp

      Filesize

      40KB

    • memory/4496-3-0x0000000005590000-0x0000000005622000-memory.dmp

      Filesize

      584KB

    • memory/4496-2-0x0000000005B40000-0x00000000060E4000-memory.dmp

      Filesize

      5.6MB

    • memory/4496-1-0x0000000000A30000-0x0000000000B96000-memory.dmp

      Filesize

      1.4MB