Analysis
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max time kernel
93s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
29-05-2024 02:21
Static task
static1
Behavioral task
behavioral1
Sample
7aa37911020ad41e9aba5578c8f33923.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
7aa37911020ad41e9aba5578c8f33923.exe
Resource
win10v2004-20240426-en
General
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Target
7aa37911020ad41e9aba5578c8f33923.exe
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Size
1.1MB
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MD5
7aa37911020ad41e9aba5578c8f33923
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SHA1
e81d5b3fdd371a45ae86fd2b27d03f8e94992c9e
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SHA256
8cbf41671be105849a83733514a591d0a9427611532904959c67879fd142fbcd
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SHA512
34bcbd391e1eae4cbbbcb83a6320760eb509ad1d362156d82a22902fbf2f406646ebe0c37ab5536cf9c2ec4dd0e2c1e23445934e89fbe2098ec2f3007f4c4cdc
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SSDEEP
24576:sjgEcqDl1o2+cvnavK1lDuwBJl7GPuVe9srR3/:OgEv1R8K1hPBGyOWRv
Malware Config
Signatures
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NirSoft MailPassView 5 IoCs
Password recovery tool for various email clients
resource yara_rule behavioral2/memory/348-6-0x0000000000400000-0x0000000000484000-memory.dmp MailPassView behavioral2/memory/1328-17-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral2/memory/1328-19-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral2/memory/1328-22-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral2/memory/1328-20-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 5 IoCs
Password recovery tool for various web browsers
resource yara_rule behavioral2/memory/348-6-0x0000000000400000-0x0000000000484000-memory.dmp WebBrowserPassView behavioral2/memory/3668-23-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/3668-25-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/3668-26-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/3668-34-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView -
Nirsoft 9 IoCs
resource yara_rule behavioral2/memory/348-6-0x0000000000400000-0x0000000000484000-memory.dmp Nirsoft behavioral2/memory/1328-17-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/1328-19-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/1328-22-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/1328-20-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/3668-23-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/3668-25-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/3668-26-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/3668-34-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft -
Uses the VBS compiler for execution 1 TTPs
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Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts vbc.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "C:\\Users\\Admin\\AppData\\Roaming\\WindowsUpdate.exe" 7aa37911020ad41e9aba5578c8f33923.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 28 whatismyipaddress.com 30 whatismyipaddress.com -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 3012 set thread context of 348 3012 7aa37911020ad41e9aba5578c8f33923.exe 92 PID 348 set thread context of 1328 348 7aa37911020ad41e9aba5578c8f33923.exe 93 PID 348 set thread context of 3668 348 7aa37911020ad41e9aba5578c8f33923.exe 94 -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 3012 7aa37911020ad41e9aba5578c8f33923.exe 3012 7aa37911020ad41e9aba5578c8f33923.exe 3668 vbc.exe 3668 vbc.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 3012 7aa37911020ad41e9aba5578c8f33923.exe Token: SeDebugPrivilege 348 7aa37911020ad41e9aba5578c8f33923.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 348 7aa37911020ad41e9aba5578c8f33923.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 3012 wrote to memory of 348 3012 7aa37911020ad41e9aba5578c8f33923.exe 92 PID 3012 wrote to memory of 348 3012 7aa37911020ad41e9aba5578c8f33923.exe 92 PID 3012 wrote to memory of 348 3012 7aa37911020ad41e9aba5578c8f33923.exe 92 PID 3012 wrote to memory of 348 3012 7aa37911020ad41e9aba5578c8f33923.exe 92 PID 3012 wrote to memory of 348 3012 7aa37911020ad41e9aba5578c8f33923.exe 92 PID 3012 wrote to memory of 348 3012 7aa37911020ad41e9aba5578c8f33923.exe 92 PID 3012 wrote to memory of 348 3012 7aa37911020ad41e9aba5578c8f33923.exe 92 PID 3012 wrote to memory of 348 3012 7aa37911020ad41e9aba5578c8f33923.exe 92 PID 348 wrote to memory of 1328 348 7aa37911020ad41e9aba5578c8f33923.exe 93 PID 348 wrote to memory of 1328 348 7aa37911020ad41e9aba5578c8f33923.exe 93 PID 348 wrote to memory of 1328 348 7aa37911020ad41e9aba5578c8f33923.exe 93 PID 348 wrote to memory of 1328 348 7aa37911020ad41e9aba5578c8f33923.exe 93 PID 348 wrote to memory of 1328 348 7aa37911020ad41e9aba5578c8f33923.exe 93 PID 348 wrote to memory of 1328 348 7aa37911020ad41e9aba5578c8f33923.exe 93 PID 348 wrote to memory of 1328 348 7aa37911020ad41e9aba5578c8f33923.exe 93 PID 348 wrote to memory of 1328 348 7aa37911020ad41e9aba5578c8f33923.exe 93 PID 348 wrote to memory of 1328 348 7aa37911020ad41e9aba5578c8f33923.exe 93 PID 348 wrote to memory of 3668 348 7aa37911020ad41e9aba5578c8f33923.exe 94 PID 348 wrote to memory of 3668 348 7aa37911020ad41e9aba5578c8f33923.exe 94 PID 348 wrote to memory of 3668 348 7aa37911020ad41e9aba5578c8f33923.exe 94 PID 348 wrote to memory of 3668 348 7aa37911020ad41e9aba5578c8f33923.exe 94 PID 348 wrote to memory of 3668 348 7aa37911020ad41e9aba5578c8f33923.exe 94 PID 348 wrote to memory of 3668 348 7aa37911020ad41e9aba5578c8f33923.exe 94 PID 348 wrote to memory of 3668 348 7aa37911020ad41e9aba5578c8f33923.exe 94 PID 348 wrote to memory of 3668 348 7aa37911020ad41e9aba5578c8f33923.exe 94 PID 348 wrote to memory of 3668 348 7aa37911020ad41e9aba5578c8f33923.exe 94
Processes
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C:\Users\Admin\AppData\Local\Temp\7aa37911020ad41e9aba5578c8f33923.exe"C:\Users\Admin\AppData\Local\Temp\7aa37911020ad41e9aba5578c8f33923.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3012 -
C:\Users\Admin\AppData\Local\Temp\7aa37911020ad41e9aba5578c8f33923.exe"C:\Users\Admin\AppData\Local\Temp\7aa37911020ad41e9aba5578c8f33923.exe"2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:348 -
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exeC:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"3⤵
- Accesses Microsoft Outlook accounts
PID:1328
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exeC:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holderwb.txt"3⤵
- Suspicious behavior: EnumeratesProcesses
PID:3668
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3KB
MD5f94dc819ca773f1e3cb27abbc9e7fa27
SHA19a7700efadc5ea09ab288544ef1e3cd876255086
SHA256a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92
SHA51272a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196