Analysis

  • max time kernel
    44s
  • max time network
    131s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    03-02-2023 16:40

General

  • Target

    file.exe

  • Size

    17KB

  • MD5

    d8848c4399130b94784433ee04c41e26

  • SHA1

    d01aef8320666401111ca1276219a6cc773c954f

  • SHA256

    0487dbe76c55bb13881635436dfc7fd3441075f2c8d57f64c462eac80325be2f

  • SHA512

    5f4e285dd313f82e4153143d4719b99fd060807c2fa17a93d052aaff20b6c64971f7ad5e86f1cde135b4695504324af3bcbd616ad329c71b7ee4367d56bb0c48

  • SSDEEP

    384:H3efq/2EA9UYLYp3bmjh/D2yrlffkxttF:06k/D2yrlffw

Malware Config

Extracted

Family

purecrypter

C2

https://kosmikband.com/wtrash/Ygezyi.dat

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\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Accesses Microsoft Outlook profiles
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:2044
    • 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:684

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/684-57-0x0000000000000000-mapping.dmp
  • memory/684-59-0x000000006F1F0000-0x000000006F79B000-memory.dmp
    Filesize

    5.7MB

  • memory/684-60-0x000000006F1F0000-0x000000006F79B000-memory.dmp
    Filesize

    5.7MB

  • memory/684-61-0x000000006F1F0000-0x000000006F79B000-memory.dmp
    Filesize

    5.7MB

  • memory/2044-54-0x0000000000390000-0x000000000039A000-memory.dmp
    Filesize

    40KB

  • memory/2044-55-0x0000000075201000-0x0000000075203000-memory.dmp
    Filesize

    8KB

  • memory/2044-56-0x0000000006B60000-0x0000000006DD4000-memory.dmp
    Filesize

    2.5MB

  • memory/2044-62-0x00000000054A0000-0x00000000054F8000-memory.dmp
    Filesize

    352KB

  • memory/2044-63-0x0000000004DB0000-0x0000000004DEC000-memory.dmp
    Filesize

    240KB