Analysis

  • max time kernel
    100s
  • max time network
    60s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    19-04-2021 19:56

General

  • Target

    IMG_630_375_10.exe

  • Size

    258KB

  • MD5

    1ceae4d45ed09a9ed4d5c392a7654fa9

  • SHA1

    ee4c9033fbb20d87723cb35333b5009086e9645c

  • SHA256

    9406ad52a87d220e0eae7b7a65a1870a72df536649d9600aca18ddce2263001f

  • SHA512

    79a71995f8b18386e584a1ac58b8ac180f7215b6f6af8adb3a2c893508fcdf5847309b18dae87e28dded6af45e38911c09d7a060b0203ba56d427ef313d36ae9

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    x103860*&1333

Signatures

  • AgentTesla

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • AgentTesla Payload 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\IMG_630_375_10.exe
    "C:\Users\Admin\AppData\Local\Temp\IMG_630_375_10.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1100
    • C:\Users\Admin\AppData\Local\Temp\IMG_630_375_10.exe
      C:\Users\Admin\AppData\Local\Temp\IMG_630_375_10.exe
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:484

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Winlogon Helper DLL

1
T1004

Defense Evasion

Modify Registry

1
T1112

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/484-65-0x000000000043763E-mapping.dmp
  • memory/484-64-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/484-66-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/484-68-0x0000000004A30000-0x0000000004A31000-memory.dmp
    Filesize

    4KB

  • memory/1100-59-0x0000000001090000-0x0000000001091000-memory.dmp
    Filesize

    4KB

  • memory/1100-61-0x00000000003E0000-0x00000000003E2000-memory.dmp
    Filesize

    8KB

  • memory/1100-62-0x0000000004AE0000-0x0000000004AE1000-memory.dmp
    Filesize

    4KB

  • memory/1100-63-0x00000000047B0000-0x00000000047ED000-memory.dmp
    Filesize

    244KB