Analysis

  • max time kernel
    100s
  • max time network
    19s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    30-07-2021 15:25

General

  • Target

    4fd784c26daf0b1877d7ffd53710b7312d89c8af0f3e640c1584d238e7e68949.exe

  • Size

    951KB

  • MD5

    bdbc972b35f56a3d6ee884adafe8bf8a

  • SHA1

    0d64630e7013645bfa3d9c8191363c7c6b6fd860

  • SHA256

    4fd784c26daf0b1877d7ffd53710b7312d89c8af0f3e640c1584d238e7e68949

  • SHA512

    93ad7a6c4b44c9e1edb0bee5221aeccce0352c34019bdaff8151095db69e86e671bde6c62c8de4326816a8e75f88366bb8a8245983c332b510b4ffde417ddc95

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot1635424534:AAEmSdFTyNmSh6Kk0U8EAlLQQg5g_gOyE74/sendDocument

Signatures

  • AgentTesla

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

  • AgentTesla Payload 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4fd784c26daf0b1877d7ffd53710b7312d89c8af0f3e640c1584d238e7e68949.exe
    "C:\Users\Admin\AppData\Local\Temp\4fd784c26daf0b1877d7ffd53710b7312d89c8af0f3e640c1584d238e7e68949.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:536
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GlwWNTUz" /XML "C:\Users\Admin\AppData\Local\Temp\tmp676.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1348
    • C:\Users\Admin\AppData\Local\Temp\4fd784c26daf0b1877d7ffd53710b7312d89c8af0f3e640c1584d238e7e68949.exe
      "C:\Users\Admin\AppData\Local\Temp\4fd784c26daf0b1877d7ffd53710b7312d89c8af0f3e640c1584d238e7e68949.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1316

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/536-60-0x0000000001010000-0x0000000001011000-memory.dmp

    Filesize

    4KB

  • memory/536-62-0x0000000000360000-0x0000000000361000-memory.dmp

    Filesize

    4KB

  • memory/536-63-0x0000000000460000-0x000000000047B000-memory.dmp

    Filesize

    108KB

  • memory/536-64-0x0000000005FA0000-0x0000000006015000-memory.dmp

    Filesize

    468KB

  • memory/536-65-0x0000000000B40000-0x0000000000B7C000-memory.dmp

    Filesize

    240KB

  • memory/1316-68-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1316-70-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1316-72-0x0000000004B10000-0x0000000004B11000-memory.dmp

    Filesize

    4KB