Overview

overview

10

Static

static

rKdhHVWehasFrcb.exe

windows7_x64

10

rKdhHVWehasFrcb.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    91s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 12:38

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General

  • Target

    rKdhHVWehasFrcb.exe

  • Size

    581KB

  • MD5

    3a5d6fbeed702b0686f6fe070bc8bbba

  • SHA1

    3fc76fd5acfb65c8e860a78fd169fec6e9fb3a13

  • SHA256

    333bca520269ca114176493ed2b944cc38cea0bbf11844942f3b632bbe27378b

  • SHA512

    805d163c72350536571a2b908fcfbbc45cd65f70782a6b1607af8ccc5cead4c3f342a71cc06a2b8d05627d706b5cb4e3f9a23a48d306b037c8570adba91c835a

Score
10/10
agentteslacollectionevasionkeyloggerspywarestealertrojan

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:     smtp
  • Host:
    roham.dnswebhost.com
  • Port:
    587
  • Username:
    il@robotkar.ir
  • Password:
    $KENECHI1991

Signatures

  • AgentTesla

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

    keyloggertrojanstealerspywareagenttesla
  • AgentTesla Payload 1 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
    evasion
  • Looks for VMWare Tools registry key 2 TTPs
    evasion
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • 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
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • 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 8 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\rKdhHVWehasFrcb.exe
    "C:\Users\Admin\AppData\Local\Temp\rKdhHVWehasFrcb.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks computer location settings
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4352
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\udUZoaNPn" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1D3C.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4656
    • C:\Users\Admin\AppData\Local\Temp\rKdhHVWehasFrcb.exe
      "{path}"
      2⤵
        PID:4440
      • C:\Users\Admin\AppData\Local\Temp\rKdhHVWehasFrcb.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:3120

    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

    Virtualization/Sandbox Evasion

    2
    T1497

    Credential Access

    Credentials in Files

    3
    T1081

    Discovery

    Query Registry

    5
    T1012

    Virtualization/Sandbox Evasion

    2
    T1497

    System Information Discovery

    4
    T1082

    Peripheral Device Discovery

    1
    T1120

    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\tmp1D3C.tmp
      Filesize

      1KB

      MD5

      a3a2bf7605385b9e6a2124cca16ebbbf

      SHA1

      274a39664d2cfcca064e2e146dcd85433ce4f8a8

      SHA256

      c5b26c1b72e1644fb61ce9695f3a3798d3138be4de41413ddd4f46553d195a35

      SHA512

      ab44081053c8088077d4351773494ad14de985d8cf745bfbcfac6a105747309e4e3d463e927d0f7aa5f2f2d85e51f2a8b085c53639c8fd241bcfdc8baafbb8cd

      Download Submit
    • memory/3120-134-0x0000000000000000-mapping.dmp
      Download
    • memory/3120-135-0x0000000000400000-0x0000000000466000-memory.dmp
      Filesize

      408KB

      Download
    • memory/3120-136-0x0000000075330000-0x00000000758E1000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/4352-130-0x0000000075330000-0x00000000758E1000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/4440-133-0x0000000000000000-mapping.dmp
      Download
    • memory/4656-131-0x0000000000000000-mapping.dmp
      Download