Analysis
- max time kernel
146s - max time network
138s - platform
windows10-2004_x64 - resource
win10v2004-20240412-en - resource tags
- submitted
17/04/2024, 01:22
General
- Target f4becb408d750ad2afbf21c109bf3b47_JaffaCakes118.exe
- Size 823KB
- Sample240417-brfztsbc3y
- SHA256 d018a7658d8dcb21b5a371e6df3207b14d97a1d9c564565f923d5941894624d0
Malware Config
Extracted
-
agenttesla
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Protocol
smtp
-
Host
smtp.privateemail.com
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Port
587
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Username
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Password
office12#
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla payload 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 2 IoCs
- Obfuscated with Agile.Net obfuscator 2 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
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C:\Users\Admin\AppData\Local\Temp\f4becb408d750ad2afbf21c109bf3b47_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\f4becb408d750ad2afbf21c109bf3b47_JaffaCakes118.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "APPS" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\APPS.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeREG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "APPS" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\APPS.exe"3⤵
- Adds Run key to start application
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C:\Users\Admin\AppData\Roaming\APPS.exe"C:\Users\Admin\AppData\Roaming\APPS.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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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
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
InstallUtil.exe
APPS.exe
memory/1316-8-0x00000000070F0000-0x0000000007156000-memory.dmp
memory/1316-9-0x00000000070C0000-0x00000000070E2000-memory.dmp
memory/1316-4-0x0000000005620000-0x00000000056BC000-memory.dmp
memory/1316-5-0x00000000056C0000-0x0000000005A14000-memory.dmp
memory/1316-6-0x00000000055D0000-0x00000000055E0000-memory.dmp
memory/1316-7-0x0000000007040000-0x0000000007068000-memory.dmp
memory/1316-2-0x0000000005B30000-0x00000000060D4000-memory.dmp
memory/1316-3-0x00000000054D0000-0x0000000005562000-memory.dmp
memory/1316-10-0x00000000055D0000-0x00000000055E0000-memory.dmp
memory/1316-13-0x0000000074700000-0x0000000074EB0000-memory.dmp
memory/1316-14-0x00000000055D0000-0x00000000055E0000-memory.dmp
memory/1316-1-0x0000000000A50000-0x0000000000B24000-memory.dmp
memory/1316-26-0x0000000074700000-0x0000000074EB0000-memory.dmp
memory/1316-0-0x0000000074700000-0x0000000074EB0000-memory.dmp
memory/3536-39-0x0000000004C20000-0x0000000004C30000-memory.dmp
memory/3536-44-0x0000000004C20000-0x0000000004C30000-memory.dmp
memory/3536-47-0x0000000004C20000-0x0000000004C30000-memory.dmp
memory/3536-46-0x00000000062B0000-0x00000000062BA000-memory.dmp
memory/3536-45-0x0000000005FA0000-0x0000000005FF0000-memory.dmp
memory/3536-36-0x00000000007A0000-0x00000000007DC000-memory.dmp
memory/3536-37-0x0000000074700000-0x0000000074EB0000-memory.dmp
memory/3536-43-0x0000000074700000-0x0000000074EB0000-memory.dmp
memory/3536-41-0x0000000005AC0000-0x0000000005AD8000-memory.dmp
memory/5036-40-0x0000000005860000-0x0000000005870000-memory.dmp
memory/5036-27-0x0000000074700000-0x0000000074EB0000-memory.dmp
memory/5036-42-0x0000000005860000-0x0000000005870000-memory.dmp
memory/5036-38-0x0000000074700000-0x0000000074EB0000-memory.dmp
memory/5036-29-0x0000000005860000-0x0000000005870000-memory.dmp
memory/5036-28-0x0000000005860000-0x0000000005870000-memory.dmp
memory/5036-31-0x0000000009470000-0x0000000009476000-memory.dmp
memory/5036-30-0x0000000006E40000-0x0000000006E54000-memory.dmp