Analysis

  • max time kernel
    148s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220331-en
  • submitted
    14-04-2022 12:36

General

  • Target

    2d334ff51483236fa87270be95e77b196989ca1c9bea4d803aa059c4758a917c.exe

  • Size

    1.0MB

  • MD5

    e534b53d075fe29c9aa3030b7f4cd661

  • SHA1

    7369f1567d017938b715d624d4635f867d24989a

  • SHA256

    2d334ff51483236fa87270be95e77b196989ca1c9bea4d803aa059c4758a917c

  • SHA512

    ee6ca412f6b8b71d1eadb64ebf8915cda679e2c98fa80cd84119934beea3c75121b2a6bbe8075907b95c77e96698bbf8d383cc59a7dde7931712ecace321c569

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot1495483448:AAGd3prw4Kj-_QDn5QOZCeOnj6Y116TT7Wg/sendDocument

Signatures

  • AgentTesla

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

  • AgentTesla Payload 6 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
  • Looks for VMWare Tools registry key 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2d334ff51483236fa87270be95e77b196989ca1c9bea4d803aa059c4758a917c.exe
    "C:\Users\Admin\AppData\Local\Temp\2d334ff51483236fa87270be95e77b196989ca1c9bea4d803aa059c4758a917c.exe"
    1⤵
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1368
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YnJVcnIqEAehuo" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC87E.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:756
    • C:\Users\Admin\AppData\Local\Temp\2d334ff51483236fa87270be95e77b196989ca1c9bea4d803aa059c4758a917c.exe
      "{path}"
      2⤵
        PID:1860
      • C:\Users\Admin\AppData\Local\Temp\2d334ff51483236fa87270be95e77b196989ca1c9bea4d803aa059c4758a917c.exe
        "{path}"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1372

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmpC87E.tmp

      Filesize

      1KB

      MD5

      b79bb0e35225d37c55b01a35629652a2

      SHA1

      7929b02c1b120c6341af6e802d5e0093bc29f64b

      SHA256

      170bb32b53dc21cd30eb42158aa0cf3b6f6d82c3637d67462b90a21517acd471

      SHA512

      eb988d1be3b5a7bb970cb2838c17a1fa064b28186967204f5d64ed8d0ff6d0b0330a9dbdd844b63c61ada4fcce1247c220519e1750e12aba98e9476901e9eb64

    • memory/1368-54-0x0000000000EA0000-0x0000000000FAC000-memory.dmp

      Filesize

      1.0MB

    • memory/1368-55-0x0000000000470000-0x000000000048E000-memory.dmp

      Filesize

      120KB

    • memory/1368-56-0x0000000005F50000-0x000000000600A000-memory.dmp

      Filesize

      744KB

    • memory/1372-60-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/1372-59-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/1372-62-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/1372-63-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/1372-64-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/1372-67-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/1372-69-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB