Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 02:07

General

  • Target

    af852fa71e4e2979b288920a1144bc6fdeaf4b47747e6a18a457f1242ab8f7cd.exe

  • Size

    692KB

  • MD5

    c7582e3427656fa19fb588ea4385cb50

  • SHA1

    38412c46489ba803a340d702d477dd2c01df20ce

  • SHA256

    af852fa71e4e2979b288920a1144bc6fdeaf4b47747e6a18a457f1242ab8f7cd

  • SHA512

    db56c10b54d637c600d743c95781ec881f758df61446d6af3eea6566d4c74c9b43aa09fc288c2f1f7655b7c83c1cd961000385a5f2c5f508ff118256421697d9

  • SSDEEP

    12288:3EkSx504bFIOp+Ja1R7d7aLD23gMhiUsg8DYhm3b5d8ls9HdbQ0BeG2R48:UkSw4buWj1L7/g4ivgrh8d8lOlF64

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.bonnyriggdentalsurgery.com.au
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Sages101*

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Detect packed .NET executables. Mostly AgentTeslaV4. 1 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs
  • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 1 IoCs
  • Detects executables referencing Windows vault credential objects. Observed in infostealers 1 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 1 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 1 IoCs
  • Detects executables referencing many file transfer clients. Observed in information stealers 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\af852fa71e4e2979b288920a1144bc6fdeaf4b47747e6a18a457f1242ab8f7cd.exe
    "C:\Users\Admin\AppData\Local\Temp\af852fa71e4e2979b288920a1144bc6fdeaf4b47747e6a18a457f1242ab8f7cd.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3508
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\af852fa71e4e2979b288920a1144bc6fdeaf4b47747e6a18a457f1242ab8f7cd.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2156
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ZFawWoJAdbivD.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2440
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZFawWoJAdbivD" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4764.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4216
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1348 --field-trial-handle=2280,i,716736634476467098,11449718822158202904,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:408

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Execution

    Command and Scripting Interpreter

    1
    T1059

    PowerShell

    1
    T1059.001

    Scheduled Task/Job

    1
    T1053

    Persistence

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Privilege Escalation

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Unsecured Credentials

    4
    T1552

    Credentials In Files

    3
    T1552.001

    Credentials in Registry

    1
    T1552.002

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Collection

    Data from Local System

    4
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
      Filesize

      2KB

      MD5

      968cb9309758126772781b83adb8a28f

      SHA1

      8da30e71accf186b2ba11da1797cf67f8f78b47c

      SHA256

      92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

      SHA512

      4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_d3kusuvk.wll.ps1
      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmp4764.tmp
      Filesize

      1KB

      MD5

      29881318314762c6b71a946ceacf4f0f

      SHA1

      9f9f206ec819a84f1b0b16f66d3e490cf1cc37f9

      SHA256

      7fa4917ef96a08448e353bc1b0c41679b01dbc85b92de5cfa3a1ae1cd745ef81

      SHA512

      52dae9f66dc7b53c3acd302f35ea8ab3e2ab949968c1b3717fba3d40dedcbe52dab62d2e3d39eff91ecd3f210f1eb9ab9af005292ef46668f8e386e3daddb8d2

    • memory/2156-26-0x00000000054D0000-0x0000000005536000-memory.dmp
      Filesize

      408KB

    • memory/2156-19-0x0000000004C60000-0x0000000005288000-memory.dmp
      Filesize

      6.2MB

    • memory/2156-87-0x00000000747C0000-0x0000000074F70000-memory.dmp
      Filesize

      7.7MB

    • memory/2156-81-0x00000000071E0000-0x00000000071FA000-memory.dmp
      Filesize

      104KB

    • memory/2156-79-0x00000000070D0000-0x00000000070DE000-memory.dmp
      Filesize

      56KB

    • memory/2156-76-0x0000000007100000-0x0000000007196000-memory.dmp
      Filesize

      600KB

    • memory/2156-75-0x0000000006EF0000-0x0000000006EFA000-memory.dmp
      Filesize

      40KB

    • memory/2156-73-0x0000000007520000-0x0000000007B9A000-memory.dmp
      Filesize

      6.5MB

    • memory/2156-15-0x00000000045F0000-0x0000000004626000-memory.dmp
      Filesize

      216KB

    • memory/2156-16-0x00000000747C0000-0x0000000074F70000-memory.dmp
      Filesize

      7.7MB

    • memory/2156-52-0x000000006F550000-0x000000006F59C000-memory.dmp
      Filesize

      304KB

    • memory/2156-18-0x00000000747C0000-0x0000000074F70000-memory.dmp
      Filesize

      7.7MB

    • memory/2156-46-0x0000000005570000-0x00000000058C4000-memory.dmp
      Filesize

      3.3MB

    • memory/2156-49-0x0000000006110000-0x000000000615C000-memory.dmp
      Filesize

      304KB

    • memory/2156-47-0x0000000005B70000-0x0000000005B8E000-memory.dmp
      Filesize

      120KB

    • memory/2440-74-0x0000000007BB0000-0x0000000007BCA000-memory.dmp
      Filesize

      104KB

    • memory/2440-72-0x0000000007890000-0x0000000007933000-memory.dmp
      Filesize

      652KB

    • memory/2440-24-0x00000000058C0000-0x00000000058E2000-memory.dmp
      Filesize

      136KB

    • memory/2440-25-0x0000000006070000-0x00000000060D6000-memory.dmp
      Filesize

      408KB

    • memory/2440-88-0x00000000747C0000-0x0000000074F70000-memory.dmp
      Filesize

      7.7MB

    • memory/2440-82-0x0000000007EF0000-0x0000000007EF8000-memory.dmp
      Filesize

      32KB

    • memory/2440-80-0x0000000007E10000-0x0000000007E24000-memory.dmp
      Filesize

      80KB

    • memory/2440-22-0x00000000747C0000-0x0000000074F70000-memory.dmp
      Filesize

      7.7MB

    • memory/2440-21-0x00000000747C0000-0x0000000074F70000-memory.dmp
      Filesize

      7.7MB

    • memory/2440-20-0x00000000747C0000-0x0000000074F70000-memory.dmp
      Filesize

      7.7MB

    • memory/2440-48-0x00000000068E0000-0x000000000692C000-memory.dmp
      Filesize

      304KB

    • memory/2440-50-0x0000000007850000-0x0000000007882000-memory.dmp
      Filesize

      200KB

    • memory/2440-77-0x0000000007DB0000-0x0000000007DC1000-memory.dmp
      Filesize

      68KB

    • memory/2440-51-0x000000006F550000-0x000000006F59C000-memory.dmp
      Filesize

      304KB

    • memory/2440-63-0x0000000007810000-0x000000000782E000-memory.dmp
      Filesize

      120KB

    • memory/3508-78-0x00000000083D0000-0x0000000008420000-memory.dmp
      Filesize

      320KB

    • memory/3508-3-0x0000000005330000-0x00000000053C2000-memory.dmp
      Filesize

      584KB

    • memory/3508-10-0x00000000747CE000-0x00000000747CF000-memory.dmp
      Filesize

      4KB

    • memory/3508-9-0x000000000AA90000-0x000000000AB2C000-memory.dmp
      Filesize

      624KB

    • memory/3508-8-0x0000000008300000-0x0000000008384000-memory.dmp
      Filesize

      528KB

    • memory/3508-32-0x0000000006590000-0x00000000065D2000-memory.dmp
      Filesize

      264KB

    • memory/3508-4-0x00000000747C0000-0x0000000074F70000-memory.dmp
      Filesize

      7.7MB

    • memory/3508-7-0x00000000056D0000-0x00000000056E0000-memory.dmp
      Filesize

      64KB

    • memory/3508-17-0x00000000747C0000-0x0000000074F70000-memory.dmp
      Filesize

      7.7MB

    • memory/3508-2-0x00000000058E0000-0x0000000005E84000-memory.dmp
      Filesize

      5.6MB

    • memory/3508-6-0x00000000056B0000-0x00000000056CA000-memory.dmp
      Filesize

      104KB

    • memory/3508-1-0x0000000000800000-0x00000000008B4000-memory.dmp
      Filesize

      720KB

    • memory/3508-5-0x00000000052C0000-0x00000000052CA000-memory.dmp
      Filesize

      40KB

    • memory/3508-0-0x00000000747CE000-0x00000000747CF000-memory.dmp
      Filesize

      4KB