Analysis

  • max time kernel
    141s
  • max time network
    166s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    07-05-2023 14:33

General

  • Target

    Purchase order 3500354689.xlsx

  • Size

    1.2MB

  • MD5

    8d872ce9212ac69cb69bfd320f41034c

  • SHA1

    cfb9566649142c44bf160a83039cf5079d445adf

  • SHA256

    e89e3adec78041202f3efa936d91d71fcb9e886ff1cd757ac34072a592370f4f

  • SHA512

    866d3797c7a667426c5b0d4ed5a8b8462771e5d273b8c4a98bc73e534d9c9aaf18ca7c0df98a701bb3164e3dfe40420af7dc93e56a59b1fb40a8398000300bee

  • SSDEEP

    24576:u2/D3wIaI2MldEmkbhBtW7fIRschBjdEWOcOCP8LuMKVzZf6WVr:TTnb2MldohTCA3hvEWOgP8LuHkWVr

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Blocklisted process makes network request 3 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Drops file in System32 directory 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde "C:\Users\Admin\AppData\Local\Temp\Purchase order 3500354689.xlsx"
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:2020
  • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
    "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
    1⤵
    • Blocklisted process makes network request
    • Loads dropped DLL
    • Launches Equation Editor
    • Suspicious use of WriteProcessMemory
    PID:568
    • C:\Users\Admin\AppData\Roaming\word.exe
      C:\Users\Admin\AppData\Roaming\word.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1924
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\GglieUgTIQ.exe"
        3⤵
        • Drops file in System32 directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1624
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GglieUgTIQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp84AB.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2028
      • C:\Users\Admin\AppData\Roaming\word.exe
        "C:\Users\Admin\AppData\Roaming\word.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:1280

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp84AB.tmp

    Filesize

    1KB

    MD5

    0aa08307eb115970f9a879d22e05bab8

    SHA1

    22842f4b2202df42cc4ed4f724bffa74b8c0535b

    SHA256

    cacf8e2781a3b2bdba60f048c288730495b6cb2f497b2848b2ffda6e9953713b

    SHA512

    a6642f869d50914bfeec3afe8e6cd2670975d8679ac006ca9edc352fb0f964babd7116a6bbd81c4f01fb401eead0dde55f49d6e13faf0418c86d37c56bc2a7d8

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

    Filesize

    757KB

    MD5

    80aa4d31a2a0e45c6be34d1c9431aa58

    SHA1

    590036c501b546ed1baf44d481728c58a6b29b16

    SHA256

    14b4f36af1e77933e2f869e534832b03a81c3c75862e3912800c322dccd387fa

    SHA512

    8d4e7208da0d2657fdb4dbcacc800544a32fdf08f58a8d48dddf64358eccf48784f9c60818a3eb34af8ffe0393987efbf3323ffd45e00bc33c1b1b1e91c20ec2

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

    Filesize

    757KB

    MD5

    80aa4d31a2a0e45c6be34d1c9431aa58

    SHA1

    590036c501b546ed1baf44d481728c58a6b29b16

    SHA256

    14b4f36af1e77933e2f869e534832b03a81c3c75862e3912800c322dccd387fa

    SHA512

    8d4e7208da0d2657fdb4dbcacc800544a32fdf08f58a8d48dddf64358eccf48784f9c60818a3eb34af8ffe0393987efbf3323ffd45e00bc33c1b1b1e91c20ec2

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

    Filesize

    757KB

    MD5

    80aa4d31a2a0e45c6be34d1c9431aa58

    SHA1

    590036c501b546ed1baf44d481728c58a6b29b16

    SHA256

    14b4f36af1e77933e2f869e534832b03a81c3c75862e3912800c322dccd387fa

    SHA512

    8d4e7208da0d2657fdb4dbcacc800544a32fdf08f58a8d48dddf64358eccf48784f9c60818a3eb34af8ffe0393987efbf3323ffd45e00bc33c1b1b1e91c20ec2

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

    Filesize

    757KB

    MD5

    80aa4d31a2a0e45c6be34d1c9431aa58

    SHA1

    590036c501b546ed1baf44d481728c58a6b29b16

    SHA256

    14b4f36af1e77933e2f869e534832b03a81c3c75862e3912800c322dccd387fa

    SHA512

    8d4e7208da0d2657fdb4dbcacc800544a32fdf08f58a8d48dddf64358eccf48784f9c60818a3eb34af8ffe0393987efbf3323ffd45e00bc33c1b1b1e91c20ec2

  • \Users\Admin\AppData\Roaming\word.exe

    Filesize

    757KB

    MD5

    80aa4d31a2a0e45c6be34d1c9431aa58

    SHA1

    590036c501b546ed1baf44d481728c58a6b29b16

    SHA256

    14b4f36af1e77933e2f869e534832b03a81c3c75862e3912800c322dccd387fa

    SHA512

    8d4e7208da0d2657fdb4dbcacc800544a32fdf08f58a8d48dddf64358eccf48784f9c60818a3eb34af8ffe0393987efbf3323ffd45e00bc33c1b1b1e91c20ec2

  • memory/1280-105-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1280-107-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1280-112-0x0000000004F70000-0x0000000004FB0000-memory.dmp

    Filesize

    256KB

  • memory/1280-109-0x0000000004F70000-0x0000000004FB0000-memory.dmp

    Filesize

    256KB

  • memory/1280-99-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1280-100-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1280-97-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1280-98-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1280-95-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1280-96-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1624-108-0x00000000005B0000-0x00000000005F0000-memory.dmp

    Filesize

    256KB

  • memory/1624-110-0x00000000005B0000-0x00000000005F0000-memory.dmp

    Filesize

    256KB

  • memory/1624-111-0x00000000005B0000-0x00000000005F0000-memory.dmp

    Filesize

    256KB

  • memory/1924-94-0x00000000080E0000-0x0000000008128000-memory.dmp

    Filesize

    288KB

  • memory/1924-82-0x0000000004B70000-0x0000000004BB0000-memory.dmp

    Filesize

    256KB

  • memory/1924-88-0x0000000008060000-0x00000000080E0000-memory.dmp

    Filesize

    512KB

  • memory/1924-87-0x00000000009B0000-0x00000000009BC000-memory.dmp

    Filesize

    48KB

  • memory/1924-80-0x0000000000E50000-0x0000000000F14000-memory.dmp

    Filesize

    784KB

  • memory/1924-83-0x0000000004B70000-0x0000000004BB0000-memory.dmp

    Filesize

    256KB

  • memory/1924-84-0x0000000000520000-0x0000000000532000-memory.dmp

    Filesize

    72KB

  • memory/2020-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2020-86-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB