Analysis

  • max time kernel
    122s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    28-10-2021 14:07

General

  • Target

    S00136402127536662.exe

  • Size

    588KB

  • MD5

    1aad026baeaab0069ec257c151924481

  • SHA1

    e5f45813bb9baba4050bd3648851336470413f74

  • SHA256

    072285efab7216ad4a718dfc4208984dd2726c5357e71e5a9aac8ae7470b21d5

  • SHA512

    44636d5d298c5fab28a4fce3b765bb81809f8894fbec07a81890b5357361089a6fdbe164fa3c48db5b73390b8877e20c08568adf7958ba6bad0cb6d9e13b2198

Malware Config

Signatures

  • A310logger

    A310 Logger is a .NET stealer/logger targeting passwords from browsers and email clients.

  • A310logger Executable 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • 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
  • 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 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\S00136402127536662.exe
    "C:\Users\Admin\AppData\Local\Temp\S00136402127536662.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1668
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qipOGkQWgAPCwF" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8D9F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:640
    • C:\Users\Admin\AppData\Local\Temp\S00136402127536662.exe
      "C:\Users\Admin\AppData\Local\Temp\S00136402127536662.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1124
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe
        3⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • outlook_office_path
        • outlook_win_path
        PID:1096

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe

    MD5

    91b41651e6e9ab352805c6d35a297d08

    SHA1

    11b8eaa7b7941461bc952b11ec3f07d25dcd1c2e

    SHA256

    0872abe29cc9231cdded3a44e02a7ea17f09cf2ac2bdbd7077065858829c3723

    SHA512

    b0b0d73f6ac7b6e9b39db0fa58931873143f6559c3b8d3db2d82d453045f75da94f3236b6c6c5200b52af6cacc038565eb2e9c6a834608dac0b0e8bb45b1e892

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe

    MD5

    91b41651e6e9ab352805c6d35a297d08

    SHA1

    11b8eaa7b7941461bc952b11ec3f07d25dcd1c2e

    SHA256

    0872abe29cc9231cdded3a44e02a7ea17f09cf2ac2bdbd7077065858829c3723

    SHA512

    b0b0d73f6ac7b6e9b39db0fa58931873143f6559c3b8d3db2d82d453045f75da94f3236b6c6c5200b52af6cacc038565eb2e9c6a834608dac0b0e8bb45b1e892

  • \Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe

    MD5

    91b41651e6e9ab352805c6d35a297d08

    SHA1

    11b8eaa7b7941461bc952b11ec3f07d25dcd1c2e

    SHA256

    0872abe29cc9231cdded3a44e02a7ea17f09cf2ac2bdbd7077065858829c3723

    SHA512

    b0b0d73f6ac7b6e9b39db0fa58931873143f6559c3b8d3db2d82d453045f75da94f3236b6c6c5200b52af6cacc038565eb2e9c6a834608dac0b0e8bb45b1e892

  • memory/640-61-0x0000000000000000-mapping.dmp

  • memory/1096-73-0x0000000000000000-mapping.dmp

  • memory/1096-76-0x0000000000D90000-0x0000000000D91000-memory.dmp

    Filesize

    4KB

  • memory/1096-78-0x000000001B270000-0x000000001B272000-memory.dmp

    Filesize

    8KB

  • memory/1124-68-0x0000000000230000-0x0000000000236000-memory.dmp

    Filesize

    24KB

  • memory/1124-64-0x0000000000400000-0x0000000000456000-memory.dmp

    Filesize

    344KB

  • memory/1124-66-0x0000000000400000-0x0000000000456000-memory.dmp

    Filesize

    344KB

  • memory/1124-67-0x0000000000401B9C-mapping.dmp

  • memory/1124-69-0x0000000000230000-0x000000000023A000-memory.dmp

    Filesize

    40KB

  • memory/1124-71-0x0000000000400000-0x0000000000456000-memory.dmp

    Filesize

    344KB

  • memory/1124-63-0x0000000000400000-0x0000000000456000-memory.dmp

    Filesize

    344KB

  • memory/1124-62-0x0000000000400000-0x0000000000456000-memory.dmp

    Filesize

    344KB

  • memory/1668-60-0x00000000053E0000-0x0000000005458000-memory.dmp

    Filesize

    480KB

  • memory/1668-59-0x00000000003A0000-0x00000000003A6000-memory.dmp

    Filesize

    24KB

  • memory/1668-55-0x00000000002C0000-0x00000000002C1000-memory.dmp

    Filesize

    4KB

  • memory/1668-58-0x00000000049E0000-0x00000000049E1000-memory.dmp

    Filesize

    4KB

  • memory/1668-57-0x0000000075901000-0x0000000075903000-memory.dmp

    Filesize

    8KB