Analysis
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max time kernel
134s -
max time network
124s -
platform
windows7_x64 -
resource
win7v20210410 -
submitted
19-04-2021 17:07
Static task
static1
Behavioral task
behavioral1
Sample
Invoice.exe
Resource
win7v20210410
Behavioral task
behavioral2
Sample
Invoice.exe
Resource
win10v20210408
General
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Target
Invoice.exe
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Size
968KB
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MD5
5d594789c434b468372bc5d531d5e036
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SHA1
3b0c36366b058579956ea7d9084cff568808703f
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SHA256
9c645de660221979f2b85b37abcdbed2feca19827f33442138fd92d05e2b2d15
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SHA512
a20eaf9e7bcef2e72fe32a4fcfcab68de775dec530a6f64114412ae7c5f8fde7ecc2875185d9cddae7e2bc5871d3f76496a39900994e80df5fb44eabe91199aa
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.lallyautomobiles.net - Port:
587 - Username:
[email protected] - Password:
Welcome@2021
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 3 IoCs
Processes:
resource yara_rule behavioral1/memory/1576-66-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral1/memory/1576-67-0x000000000043762E-mapping.dmp family_agenttesla behavioral1/memory/1576-68-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla -
Drops file in Drivers directory 1 IoCs
Processes:
Invoice.exedescription ioc process File opened for modification C:\Windows\system32\drivers\etc\hosts Invoice.exe -
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 1 IoCs
Processes:
Invoice.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\kprUEGC = "C:\\Users\\Admin\\AppData\\Roaming\\kprUEGC\\kprUEGC.exe" Invoice.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Invoice.exedescription pid process target process PID 1748 set thread context of 1576 1748 Invoice.exe Invoice.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
Invoice.exeInvoice.exepid process 1748 Invoice.exe 1748 Invoice.exe 1576 Invoice.exe 1576 Invoice.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Invoice.exeInvoice.exedescription pid process Token: SeDebugPrivilege 1748 Invoice.exe Token: SeDebugPrivilege 1576 Invoice.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Invoice.exepid process 1576 Invoice.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
Invoice.exedescription pid process target process PID 1748 wrote to memory of 1552 1748 Invoice.exe Invoice.exe PID 1748 wrote to memory of 1552 1748 Invoice.exe Invoice.exe PID 1748 wrote to memory of 1552 1748 Invoice.exe Invoice.exe PID 1748 wrote to memory of 1552 1748 Invoice.exe Invoice.exe PID 1748 wrote to memory of 1576 1748 Invoice.exe Invoice.exe PID 1748 wrote to memory of 1576 1748 Invoice.exe Invoice.exe PID 1748 wrote to memory of 1576 1748 Invoice.exe Invoice.exe PID 1748 wrote to memory of 1576 1748 Invoice.exe Invoice.exe PID 1748 wrote to memory of 1576 1748 Invoice.exe Invoice.exe PID 1748 wrote to memory of 1576 1748 Invoice.exe Invoice.exe PID 1748 wrote to memory of 1576 1748 Invoice.exe Invoice.exe PID 1748 wrote to memory of 1576 1748 Invoice.exe Invoice.exe PID 1748 wrote to memory of 1576 1748 Invoice.exe Invoice.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Invoice.exe"C:\Users\Admin\AppData\Local\Temp\Invoice.exe"1⤵
- 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\Invoice.exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\Invoice.exe"{path}"2⤵
- Drops file in Drivers directory
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/1576-66-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1576-67-0x000000000043762E-mapping.dmp
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memory/1576-68-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1576-70-0x0000000004470000-0x0000000004471000-memory.dmpFilesize
4KB
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memory/1576-71-0x0000000004471000-0x0000000004472000-memory.dmpFilesize
4KB
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memory/1748-59-0x00000000009E0000-0x00000000009E1000-memory.dmpFilesize
4KB
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memory/1748-61-0x0000000004EA0000-0x0000000004EA1000-memory.dmpFilesize
4KB
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memory/1748-62-0x0000000000970000-0x0000000000975000-memory.dmpFilesize
20KB
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memory/1748-63-0x000000007EF40000-0x000000007EF41000-memory.dmpFilesize
4KB
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memory/1748-64-0x0000000005A70000-0x0000000005B33000-memory.dmpFilesize
780KB
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memory/1748-65-0x0000000005640000-0x00000000056BE000-memory.dmpFilesize
504KB