Analysis

  • max time kernel
    57s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    02-02-2023 15:09

General

  • Target

    a40459f1f741836d46666ce9b97a191c.exe

  • Size

    17KB

  • MD5

    a40459f1f741836d46666ce9b97a191c

  • SHA1

    2bc5fad1d7906cca69973978854c55631bdf5513

  • SHA256

    7e1a5dbf82214247152ab46db0014c5aa53faa5c21b630900eabfbf795147787

  • SHA512

    c0bacf88707bd9572656d1eed5bda093262d69f1d699281175117f3afa2dfc8b1c71105c12ce706393166d1e366e98c79d893a5c315278572b60081faa3983ea

  • SSDEEP

    192:wA1NdkCT9ktcs4AZ/Daryr13kQfwvxk4Hkq7n:eCT9MZ/D2yrlffkxtt7

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.expostore.pk
  • Port:
    587
  • Username:
    info@expostore.pk
  • Password:
    Expostore12345@@
  • Email To:
    mylogs456@gmail.com

Signatures

  • AgentTesla

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

  • Detect PureCrypter injector 1 IoCs
  • PureCrypter

    PureCrypter is a .NET malware loader first seen in early 2021.

  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a40459f1f741836d46666ce9b97a191c.exe
    "C:\Users\Admin\AppData\Local\Temp\a40459f1f741836d46666ce9b97a191c.exe"
    1⤵
    • Accesses Microsoft Outlook profiles
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:1976
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:576

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/576-57-0x0000000000000000-mapping.dmp
  • memory/576-59-0x000000006ED50000-0x000000006F2FB000-memory.dmp
    Filesize

    5.7MB

  • memory/576-60-0x000000006ED50000-0x000000006F2FB000-memory.dmp
    Filesize

    5.7MB

  • memory/576-61-0x000000006ED50000-0x000000006F2FB000-memory.dmp
    Filesize

    5.7MB

  • memory/1976-54-0x0000000000060000-0x000000000006A000-memory.dmp
    Filesize

    40KB

  • memory/1976-55-0x0000000074D81000-0x0000000074D83000-memory.dmp
    Filesize

    8KB

  • memory/1976-56-0x00000000067B0000-0x0000000006A18000-memory.dmp
    Filesize

    2.4MB

  • memory/1976-62-0x0000000005660000-0x00000000056B8000-memory.dmp
    Filesize

    352KB

  • memory/1976-63-0x0000000004CC0000-0x0000000004CFC000-memory.dmp
    Filesize

    240KB