Overview

overview

10

Static

static

yevIa4Z99KSppE9.exe

windows7_x64

10

yevIa4Z99KSppE9.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    91s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 22:54

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General

  • Target

    yevIa4Z99KSppE9.exe

  • Size

    423KB

  • MD5

    aa7bc1c91e5d0436578c580662fc3253

  • SHA1

    76d62a638598aaf315030c3f8c21afff1b0a6cb1

  • SHA256

    a9a90e322d043cf6430fb070d2cf81ea38b36b174add5b06c3d8691c6c605949

  • SHA512

    f854405a1a22d1e7d6ada376efc5550706d29239855c97b98d6696e04f85fb14d6fd732b9339e7c5c52ffe0b282111ee2669b7606ec75cf4b843fae9ca1b85d0

Score
10/10
agentteslacollectionkeyloggerspywarestealertrojan

Malware Config

Extracted

Credentials

  • Protocol:     smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Mold4lord231

Extracted

Family

agenttesla

Credentials

  • Protocol:     smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Mold4lord231

Signatures

  • AgentTesla

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

    keyloggertrojanstealerspywareagenttesla
  • AgentTesla Payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

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

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

    spywarestealer
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
    collection
  • 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.

    persistence
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\yevIa4Z99KSppE9.exe
    "C:\Users\Admin\AppData\Local\Temp\yevIa4Z99KSppE9.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4116
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kNUwplUJIJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1722.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:548
    • C:\Users\Admin\AppData\Local\Temp\yevIa4Z99KSppE9.exe
      "{path}"
      2⤵
        PID:4468
      • C:\Users\Admin\AppData\Local\Temp\yevIa4Z99KSppE9.exe
        "{path}"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • outlook_office_path
        • outlook_win_path
        PID:216

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Defense Evasion

    Credential Access

    Credentials in Files

    3
    T1081

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Lateral Movement

    Collection

    Data from Local System

    3
    T1005

    Email Collection

    1
    T1114

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp1722.tmp
      Filesize

      1KB

      MD5

      4fbab9900b0c9e2e5deb830d3a29bbb1

      SHA1

      9de3c1574525500293950b781c44acdf6094e454

      SHA256

      be3d40fcdbe26b2ad7e42454a65c19074f7876b0ec7c3a934c4efca78c61ec04

      SHA512

      1e2188f44c0efb7e5e8271aac0955b963390c9eeb10b1d72990ec076fd95068b74d624c550334c99128ade49d17e126b67be503ccc539e30b23772d6571da3d4

      Download Submit
    • memory/216-134-0x0000000000000000-mapping.dmp
      Download
    • memory/216-135-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

      Download
    • memory/216-136-0x0000000074CD0000-0x0000000075281000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/548-131-0x0000000000000000-mapping.dmp
      Download
    • memory/4116-130-0x0000000074CD0000-0x0000000075281000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/4468-133-0x0000000000000000-mapping.dmp
      Download