Analysis

  • max time kernel
    164s
  • max time network
    138s
  • platform
    windows10_x64
  • resource
    win10-en
  • submitted
    06-09-2021 06:44

General

  • Target

    464424544266244342.exe

  • Size

    899KB

  • MD5

    0911a58481531db75673b46587dbe4c9

  • SHA1

    ab49bd40920e1b24b3c948cd9cd89c328d5edce7

  • SHA256

    d166df0fa1b80518c97b3977154bb8ebfc5364daec8f82b76882d43ec74b2c29

  • SHA512

    08ed905dc6c3fb11263aab1dc82b0f0847f4c2bc9b75c507c250563ea153a0a0c88f0bb21a14cdaf55939997faa461cb71b557bb2eb713ce45b9acb67e116e47

Malware Config

Signatures

  • A310logger

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

  • A310logger Executable 2 IoCs
  • Executes dropped EXE 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.

  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\464424544266244342.exe
    "C:\Users\Admin\AppData\Local\Temp\464424544266244342.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4000
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\IKIBAFYAQObvf" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE2E4.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2372
    • C:\Users\Admin\AppData\Local\Temp\464424544266244342.exe
      "C:\Users\Admin\AppData\Local\Temp\464424544266244342.exe"
      2⤵
        PID:3772
      • C:\Users\Admin\AppData\Local\Temp\464424544266244342.exe
        "C:\Users\Admin\AppData\Local\Temp\464424544266244342.exe"
        2⤵
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2708
        • 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
          PID:2660
        • C:\Program Files (x86)\Windows Mail\WinMail.exe
          "C:\Program Files (x86)\Windows Mail\WinMail" OCInstallUserConfigOE
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1824
          • C:\Program Files\Windows Mail\WinMail.exe
            "C:\Program Files\Windows Mail\WinMail" OCInstallUserConfigOE
            4⤵
              PID:2100

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Execution

      Scheduled Task

      1
      T1053

      Persistence

      Scheduled Task

      1
      T1053

      Privilege Escalation

      Scheduled Task

      1
      T1053

      Credential Access

      Credentials in Files

      2
      T1081

      Discovery

      System Information Discovery

      1
      T1082

      Collection

      Data from Local System

      2
      T1005

      Replay Monitor

      Loading Replay Monitor...

      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

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\credentials.txt
        MD5

        055c857272026583a61e1b5821c69a24

        SHA1

        ec39d34f16487682801dd2b319554cbed57feca4

        SHA256

        190db16bb64995e3bdea04b9e6fc1994dacfea3253a7559732205b1d41362b84

        SHA512

        d7833c4651683e95959107e05b07b60d2e963b9fbecd0106b329e2087d1dfc9aedb962b334e22b6b462699cbce86097d4d50ce5d1310ad098e3531efaa4e204b

      • memory/1824-137-0x0000000000000000-mapping.dmp
      • memory/2100-138-0x0000000000000000-mapping.dmp
      • memory/2372-125-0x0000000000000000-mapping.dmp
      • memory/2660-135-0x000000001AE90000-0x000000001AE92000-memory.dmp
        Filesize

        8KB

      • memory/2660-133-0x00000000000B0000-0x00000000000B1000-memory.dmp
        Filesize

        4KB

      • memory/2660-130-0x0000000000000000-mapping.dmp
      • memory/2708-126-0x0000000000400000-0x0000000000456000-memory.dmp
        Filesize

        344KB

      • memory/2708-127-0x0000000000401B9C-mapping.dmp
      • memory/4000-115-0x0000000000630000-0x0000000000631000-memory.dmp
        Filesize

        4KB

      • memory/4000-124-0x0000000004A50000-0x0000000004AA8000-memory.dmp
        Filesize

        352KB

      • memory/4000-123-0x00000000098C0000-0x000000000994B000-memory.dmp
        Filesize

        556KB

      • memory/4000-122-0x0000000007680000-0x0000000007696000-memory.dmp
        Filesize

        88KB

      • memory/4000-121-0x0000000008ED0000-0x0000000008ED1000-memory.dmp
        Filesize

        4KB

      • memory/4000-120-0x00000000073D0000-0x00000000078CE000-memory.dmp
        Filesize

        5.0MB

      • memory/4000-119-0x0000000007420000-0x0000000007421000-memory.dmp
        Filesize

        4KB

      • memory/4000-118-0x0000000007470000-0x0000000007471000-memory.dmp
        Filesize

        4KB

      • memory/4000-117-0x00000000078D0000-0x00000000078D1000-memory.dmp
        Filesize

        4KB