Analysis
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max time kernel
125s -
max time network
126s -
platform
windows10-2004_x64 -
resource
win10v2004-20240419-en -
resource tags
arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system -
submitted
03/05/2024, 13:08
Static task
static1
Behavioral task
behavioral1
Sample
document.XLSxm.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
document.XLSxm.exe
Resource
win10v2004-20240419-en
General
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Target
document.XLSxm.exe
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Size
2.2MB
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MD5
8c8eb8a5f4a10cb4ec685e3c00e55236
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SHA1
515f359f2280ca1274357a79f6eaa5c2617ad06d
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SHA256
fa5e0fa6c5ad1d8b07047591ab54b91b8d1f152a43b0f9df0d3acea792f012a3
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SHA512
891faaddf8225de5c0d0190b5231dcec368417fb5c43df66feb45a412611f0d75032c93f1061ff94bc2aa295c2645d47fd4c4da4c89f95d4bc829674a5daf633
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SSDEEP
49152:uSEOK4/mJ0D7nZiHq5/E7rcivg4GedSUcrAkcF0DsJKvejIPHlE+m+:0qBZiHqxwfgDTaF0AJKGjI9EV
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.id-net.fr - Port:
587 - Username:
[email protected] - Password:
zhi33 - Email To:
[email protected]
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Detect ZGRat V1 34 IoCs
resource yara_rule behavioral2/memory/2336-2-0x00000000055F0000-0x0000000005820000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-30-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-34-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-60-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-68-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-66-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-64-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-62-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-58-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-56-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-54-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-50-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-48-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-46-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-44-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-42-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-40-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-38-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-36-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-32-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-52-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-28-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-26-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-24-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-22-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-20-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-18-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-16-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-14-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-12-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-10-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-8-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-6-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 behavioral2/memory/2336-5-0x00000000055F0000-0x000000000581B000-memory.dmp family_zgrat_v1 -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Evqekukjwg = "C:\\Users\\Admin\\AppData\\Roaming\\Evqekukjwg.exe" document.XLSxm.exe Set value (str) \REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MvQHOaQ = "C:\\Users\\Admin\\AppData\\Roaming\\MvQHOaQ\\MvQHOaQ.exe" RegAsm.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 47 api.ipify.org 48 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2336 set thread context of 1888 2336 document.XLSxm.exe 97 -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1888 RegAsm.exe 1888 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 2336 document.XLSxm.exe Token: SeDebugPrivilege 2336 document.XLSxm.exe Token: SeDebugPrivilege 1888 RegAsm.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1888 RegAsm.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 2336 wrote to memory of 1888 2336 document.XLSxm.exe 97 PID 2336 wrote to memory of 1888 2336 document.XLSxm.exe 97 PID 2336 wrote to memory of 1888 2336 document.XLSxm.exe 97 PID 2336 wrote to memory of 1888 2336 document.XLSxm.exe 97 PID 2336 wrote to memory of 1888 2336 document.XLSxm.exe 97 PID 2336 wrote to memory of 1888 2336 document.XLSxm.exe 97 PID 2336 wrote to memory of 1888 2336 document.XLSxm.exe 97 PID 2336 wrote to memory of 1888 2336 document.XLSxm.exe 97
Processes
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C:\Users\Admin\AppData\Local\Temp\document.XLSxm.exe"C:\Users\Admin\AppData\Local\Temp\document.XLSxm.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2336 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1888
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