Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-05-2024 11:09

General

  • Target

    1c35b8422e6ad13accb39e4e6a0b00fc_JaffaCakes118.exe

  • Size

    895KB

  • MD5

    1c35b8422e6ad13accb39e4e6a0b00fc

  • SHA1

    ef1abf8e26b28de0c3d2f17e554dd3b1edbf0253

  • SHA256

    8d4a01b04439bd4ea04fca05aa078367da91aefea6dbe7b317c3fa16ca9d3354

  • SHA512

    c4f9400b62bd977828f058acd52e7be13a2138dad81f767badf91b6060927f9b04cf08f64197475f5a1cb4bfd9f0046f6fffe035cfa700659774766c23d9d596

  • SSDEEP

    12288:CYS1QbvgWK5WpLxieT8n7vSbbiHktlSFyg82MIM+C0q5xQ8w:CxQbvxaW7ijn7vSbb7IQIes

Malware Config

Signatures

  • AgentTesla

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

  • AgentTesla payload 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Obfuscated with Agile.Net obfuscator 33 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 27 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1c35b8422e6ad13accb39e4e6a0b00fc_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\1c35b8422e6ad13accb39e4e6a0b00fc_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1648
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v nomnx /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\mhje.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:208
      • C:\Windows\SysWOW64\reg.exe
        REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v nomnx /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\mhje.exe"
        3⤵
        • Adds Run key to start application
        PID:3248
    • C:\Users\Admin\mhje.exe
      "C:\Users\Admin\mhje.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4260
      • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
        "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
        3⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • outlook_office_path
        • outlook_win_path
        PID:4432

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

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

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    Filesize

    41KB

    MD5

    5d4073b2eb6d217c19f2b22f21bf8d57

    SHA1

    f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

    SHA256

    ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

    SHA512

    9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

  • C:\Users\Admin\AppData\Local\Temp\c08e67e7-d17e-42f4-84a8-059771d01a58\AgileDotNetRT.dll
    Filesize

    94KB

    MD5

    14ff402962ad21b78ae0b4c43cd1f194

    SHA1

    f8a510eb26666e875a5bdd1cadad40602763ad72

    SHA256

    fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b

    SHA512

    daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b

  • C:\Users\Admin\mhje.exe
    Filesize

    895KB

    MD5

    1c35b8422e6ad13accb39e4e6a0b00fc

    SHA1

    ef1abf8e26b28de0c3d2f17e554dd3b1edbf0253

    SHA256

    8d4a01b04439bd4ea04fca05aa078367da91aefea6dbe7b317c3fa16ca9d3354

    SHA512

    c4f9400b62bd977828f058acd52e7be13a2138dad81f767badf91b6060927f9b04cf08f64197475f5a1cb4bfd9f0046f6fffe035cfa700659774766c23d9d596

  • memory/1648-0-0x00000000749BE000-0x00000000749BF000-memory.dmp
    Filesize

    4KB

  • memory/1648-1-0x0000000000D20000-0x0000000000E04000-memory.dmp
    Filesize

    912KB

  • memory/1648-2-0x00000000056C0000-0x00000000056E8000-memory.dmp
    Filesize

    160KB

  • memory/1648-11-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-73-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-71-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-69-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-67-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-65-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-63-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-61-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-59-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-57-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-55-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-53-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-51-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-49-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-48-0x00000000749B0000-0x0000000075160000-memory.dmp
    Filesize

    7.7MB

  • memory/1648-46-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-44-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-42-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-40-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-38-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-36-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-34-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-32-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-30-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-28-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-26-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-24-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-22-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-20-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-18-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-16-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-14-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-12-0x00000000056C0000-0x00000000056E1000-memory.dmp
    Filesize

    132KB

  • memory/1648-10-0x00000000733C0000-0x0000000073449000-memory.dmp
    Filesize

    548KB

  • memory/1648-170-0x00000000749BE000-0x00000000749BF000-memory.dmp
    Filesize

    4KB

  • memory/1648-171-0x00000000749B0000-0x0000000075160000-memory.dmp
    Filesize

    7.7MB

  • memory/1648-172-0x00000000066E0000-0x0000000006C84000-memory.dmp
    Filesize

    5.6MB

  • memory/1648-173-0x0000000006210000-0x00000000062A2000-memory.dmp
    Filesize

    584KB

  • memory/1648-174-0x00000000749B0000-0x0000000075160000-memory.dmp
    Filesize

    7.7MB

  • memory/1648-177-0x00000000749B0000-0x0000000075160000-memory.dmp
    Filesize

    7.7MB

  • memory/1648-207-0x00000000749B0000-0x0000000075160000-memory.dmp
    Filesize

    7.7MB

  • memory/4260-210-0x00000000749B0000-0x0000000075160000-memory.dmp
    Filesize

    7.7MB

  • memory/4260-370-0x00000000749B0000-0x0000000075160000-memory.dmp
    Filesize

    7.7MB

  • memory/4260-371-0x00000000749B0000-0x0000000075160000-memory.dmp
    Filesize

    7.7MB

  • memory/4260-372-0x00000000749B0000-0x0000000075160000-memory.dmp
    Filesize

    7.7MB

  • memory/4260-373-0x0000000006210000-0x000000000621A000-memory.dmp
    Filesize

    40KB

  • memory/4260-380-0x00000000749B0000-0x0000000075160000-memory.dmp
    Filesize

    7.7MB

  • memory/4432-379-0x0000000000600000-0x000000000065A000-memory.dmp
    Filesize

    360KB

  • memory/4432-381-0x0000000004E00000-0x0000000004E9C000-memory.dmp
    Filesize

    624KB

  • memory/4432-382-0x0000000004DB0000-0x0000000004DC8000-memory.dmp
    Filesize

    96KB

  • memory/4432-383-0x0000000005310000-0x0000000005376000-memory.dmp
    Filesize

    408KB

  • memory/4432-384-0x0000000006160000-0x00000000061B0000-memory.dmp
    Filesize

    320KB

  • memory/4432-385-0x0000000006270000-0x000000000627A000-memory.dmp
    Filesize

    40KB