Analysis

  • max time kernel
    151s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    25-01-2021 16:23

General

  • Target

    order-2020-PO_0834.exe

  • Size

    769KB

  • MD5

    1da2611d005b3e9772473c6c6a30a4bb

  • SHA1

    c6a2394c14529f9569a8cb4fa97f6d561d848118

  • SHA256

    da62030389950c96e25e406e2c698b25cfacd49ecbdaa986421fb7995d2ee314

  • SHA512

    9b796e625a8ae2118f3b57b8d1fa5a5076bcdfa5bcabf3b85d79853508a0cb8836c6fd1dfbbe66ae152b4224217f0f243b531c97f7bbff5f068270c8f48a727c

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.grandtours.gr
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    !ugochukwu1-4-7!???rex

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\order-2020-PO_0834.exe
    "C:\Users\Admin\AppData\Local\Temp\order-2020-PO_0834.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1864
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VkdmIUfSlA" /XML "C:\Users\Admin\AppData\Local\Temp\tmp23E5.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1184
    • C:\Users\Admin\AppData\Local\Temp\order-2020-PO_0834.exe
      "C:\Users\Admin\AppData\Local\Temp\order-2020-PO_0834.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1016

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

3
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp23E5.tmp
    MD5

    7d05ff30c554a5bcdb72d42ac1c8d7fc

    SHA1

    6679123c83c1463611b276829e47656f91e6ca76

    SHA256

    df626ed616af9ab68d3dba7f1395e420ce30a5b46801fa1f0715f036341039f5

    SHA512

    078f6301339994cc1d164bcca44df88f4bff2b3e06ff6ed111f4acb4888e8d8590e67138853a1da2315a4a8ac785fbb87fe052f3f21f98b92f9fadcff68c3987

  • memory/1016-10-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1016-11-0x00000000004374BE-mapping.dmp
  • memory/1016-12-0x00000000743D0000-0x0000000074ABE000-memory.dmp
    Filesize

    6.9MB

  • memory/1016-13-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1016-15-0x0000000004B40000-0x0000000004B41000-memory.dmp
    Filesize

    4KB

  • memory/1184-8-0x0000000000000000-mapping.dmp
  • memory/1864-2-0x00000000743D0000-0x0000000074ABE000-memory.dmp
    Filesize

    6.9MB

  • memory/1864-3-0x00000000105C0000-0x00000000105C1000-memory.dmp
    Filesize

    4KB

  • memory/1864-5-0x0000000004D50000-0x0000000004D51000-memory.dmp
    Filesize

    4KB

  • memory/1864-6-0x0000000000490000-0x0000000000493000-memory.dmp
    Filesize

    12KB

  • memory/1864-7-0x0000000004CD0000-0x0000000004D3A000-memory.dmp
    Filesize

    424KB