Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 17:08

General

  • Target

    c99ab5fd84fd8e4eb94bc9d521920481effd92e79cd383f8ee07c1457f8c3fc8.exe

  • Size

    750KB

  • MD5

    af7969ad9402eed625d7062c487c6f66

  • SHA1

    eb7d2554b1a38da763b94177f6272a86c35b1d0d

  • SHA256

    c99ab5fd84fd8e4eb94bc9d521920481effd92e79cd383f8ee07c1457f8c3fc8

  • SHA512

    20e1cae871ab11bd0c23ba040a1d0b377d6785b006d8b5de6d7184a1fd0f8699b9993d1f0988a1175516a0545df3f245d119757032d055f0a1e6a80cc7728878

  • SSDEEP

    12288:5zvxn6yWn7fcpVZlu/6uHl8XdpxC8wmkSgIYBo9u9xm5TdgWgegPgy/g52w8BLvm:Zxn698VVYl4PCVogIY0Qm9dg0gIyYsp6

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.

  • 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\c99ab5fd84fd8e4eb94bc9d521920481effd92e79cd383f8ee07c1457f8c3fc8.exe
    "C:\Users\Admin\AppData\Local\Temp\c99ab5fd84fd8e4eb94bc9d521920481effd92e79cd383f8ee07c1457f8c3fc8.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2668
    • 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\c99ab5fd84fd8e4eb94bc9d521920481effd92e79cd383f8ee07c1457f8c3fc8.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:528
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\WWDyYT.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4640
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WWDyYT" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6A62.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2880

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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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\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
    Filesize

    18KB

    MD5

    a0f7fcb8f6edabec25410df44552473e

    SHA1

    35859ece8180a392c29e2a152c6a204543c0dc55

    SHA256

    7bc3d1b19423e5076e2e9d0a6a1dc629f73866556fdb8a67fca90842b779f6b8

    SHA512

    91bbcdf4da0a6ee55bddcff10ed66b0cea0f81276d0f23d48730d04f95bc86819801dd4d2fcda523d0bbf1dc2af39c21384e9a5fd2015e1232acd196af2e9c92

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zys1qw10.cao.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp6A62.tmp
    Filesize

    1KB

    MD5

    fcc6df220f7e85d1516e2df9267909ea

    SHA1

    91150313f58195b125b11d34e23b41195d685937

    SHA256

    ddae5eba0ba7d0bfb86a2343bb347a9dd72ddc850d58901eec582fcfdb4b373c

    SHA512

    e3698697da2661f4f2f76974fdc485f5f93baf7533f76386c7aacc9f3575ad33fb7345f0d1382a2c8b94d4c57867d7d6cacf8c7b0fc16c43172cb9807a0d71c5

  • memory/528-22-0x00000000060C0000-0x00000000060E2000-memory.dmp
    Filesize

    136KB

  • memory/528-50-0x000000006F950000-0x000000006F99C000-memory.dmp
    Filesize

    304KB

  • memory/528-48-0x0000000006950000-0x000000000699C000-memory.dmp
    Filesize

    304KB

  • memory/528-47-0x0000000006740000-0x000000000675E000-memory.dmp
    Filesize

    120KB

  • memory/528-87-0x0000000074B20000-0x00000000752D0000-memory.dmp
    Filesize

    7.7MB

  • memory/528-80-0x0000000007E90000-0x0000000007E98000-memory.dmp
    Filesize

    32KB

  • memory/528-79-0x0000000007EB0000-0x0000000007ECA000-memory.dmp
    Filesize

    104KB

  • memory/528-15-0x0000000002F40000-0x0000000002F76000-memory.dmp
    Filesize

    216KB

  • memory/528-16-0x0000000005960000-0x0000000005F88000-memory.dmp
    Filesize

    6.2MB

  • memory/528-17-0x0000000074B20000-0x00000000752D0000-memory.dmp
    Filesize

    7.7MB

  • memory/528-18-0x0000000074B20000-0x00000000752D0000-memory.dmp
    Filesize

    7.7MB

  • memory/528-78-0x0000000007DB0000-0x0000000007DC4000-memory.dmp
    Filesize

    80KB

  • memory/528-74-0x0000000007BE0000-0x0000000007BEA000-memory.dmp
    Filesize

    40KB

  • memory/528-23-0x0000000006160000-0x00000000061C6000-memory.dmp
    Filesize

    408KB

  • memory/528-24-0x00000000061D0000-0x0000000006236000-memory.dmp
    Filesize

    408KB

  • memory/528-31-0x0000000006240000-0x0000000006594000-memory.dmp
    Filesize

    3.3MB

  • memory/528-73-0x0000000007B70000-0x0000000007B8A000-memory.dmp
    Filesize

    104KB

  • memory/528-60-0x0000000007A10000-0x0000000007A2E000-memory.dmp
    Filesize

    120KB

  • memory/528-72-0x00000000081B0000-0x000000000882A000-memory.dmp
    Filesize

    6.5MB

  • memory/528-61-0x0000000007A40000-0x0000000007AE3000-memory.dmp
    Filesize

    652KB

  • memory/528-49-0x00000000079D0000-0x0000000007A02000-memory.dmp
    Filesize

    200KB

  • memory/528-21-0x0000000074B20000-0x00000000752D0000-memory.dmp
    Filesize

    7.7MB

  • memory/2668-89-0x0000000074B2E000-0x0000000074B2F000-memory.dmp
    Filesize

    4KB

  • memory/2668-6-0x0000000005BC0000-0x0000000005BE2000-memory.dmp
    Filesize

    136KB

  • memory/2668-90-0x0000000074B20000-0x00000000752D0000-memory.dmp
    Filesize

    7.7MB

  • memory/2668-7-0x00000000059A0000-0x00000000059AC000-memory.dmp
    Filesize

    48KB

  • memory/2668-0-0x0000000074B2E000-0x0000000074B2F000-memory.dmp
    Filesize

    4KB

  • memory/2668-3-0x00000000055E0000-0x0000000005672000-memory.dmp
    Filesize

    584KB

  • memory/2668-5-0x0000000074B20000-0x00000000752D0000-memory.dmp
    Filesize

    7.7MB

  • memory/2668-9-0x0000000006C00000-0x0000000006C84000-memory.dmp
    Filesize

    528KB

  • memory/2668-27-0x0000000006C80000-0x0000000006CC2000-memory.dmp
    Filesize

    264KB

  • memory/2668-4-0x00000000055C0000-0x00000000055CA000-memory.dmp
    Filesize

    40KB

  • memory/2668-88-0x0000000008120000-0x0000000008170000-memory.dmp
    Filesize

    320KB

  • memory/2668-8-0x0000000002FF0000-0x0000000003000000-memory.dmp
    Filesize

    64KB

  • memory/2668-1-0x0000000000B00000-0x0000000000BC0000-memory.dmp
    Filesize

    768KB

  • memory/2668-2-0x0000000005C90000-0x0000000006234000-memory.dmp
    Filesize

    5.6MB

  • memory/2668-10-0x000000000F7E0000-0x000000000F87C000-memory.dmp
    Filesize

    624KB

  • memory/4640-62-0x000000006F950000-0x000000006F99C000-memory.dmp
    Filesize

    304KB

  • memory/4640-19-0x0000000074B20000-0x00000000752D0000-memory.dmp
    Filesize

    7.7MB

  • memory/4640-77-0x0000000007AC0000-0x0000000007ACE000-memory.dmp
    Filesize

    56KB

  • memory/4640-86-0x0000000074B20000-0x00000000752D0000-memory.dmp
    Filesize

    7.7MB

  • memory/4640-76-0x0000000007A90000-0x0000000007AA1000-memory.dmp
    Filesize

    68KB

  • memory/4640-75-0x0000000007B10000-0x0000000007BA6000-memory.dmp
    Filesize

    600KB

  • memory/4640-46-0x0000000074B20000-0x00000000752D0000-memory.dmp
    Filesize

    7.7MB

  • memory/4640-36-0x0000000074B20000-0x00000000752D0000-memory.dmp
    Filesize

    7.7MB