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Analysis
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max time kernel
150s -
max time network
181s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
30/11/2022, 23:27
Static task
static1
Behavioral task
behavioral1
Sample
7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe
Resource
win10v2004-20221111-en
General
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Target
7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe
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Size
624KB
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MD5
a6fc40105117a5663929134ace126bab
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SHA1
92448ef679c4bd601b20c9efb1afc3ebfd6dd5bc
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SHA256
7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f
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SHA512
cfbce633174f2b92c5e348b9a7477ba132befd82343b99090cd0d502ba1d774b25facbb131de1e692bd4b623dc4258f0b4b1cef90a1a113a8aa0a97211675794
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SSDEEP
12288:teO2NPnq1aOX5gfIRD2oZAaN7CANofcwrxBieAjgy7FJaGaY/mXO:tGxp254uLzIF0wrX9OxJam/me
Malware Config
Signatures
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ISR Stealer
ISR Stealer is a modified version of Hackhound Stealer written in visual basic.
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ISR Stealer payload 5 IoCs
resource yara_rule behavioral2/memory/2000-134-0x0000000000000000-mapping.dmp family_isrstealer behavioral2/memory/2000-135-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral2/memory/2000-145-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral2/memory/2000-154-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral2/memory/2000-155-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer -
NirSoft MailPassView 3 IoCs
Password recovery tool for various email clients
resource yara_rule behavioral2/memory/3916-151-0x0000000000400000-0x000000000041F000-memory.dmp MailPassView behavioral2/memory/3916-152-0x0000000000400000-0x000000000041F000-memory.dmp MailPassView behavioral2/memory/3916-153-0x0000000000400000-0x000000000041F000-memory.dmp MailPassView -
Nirsoft 3 IoCs
resource yara_rule behavioral2/memory/3916-151-0x0000000000400000-0x000000000041F000-memory.dmp Nirsoft behavioral2/memory/3916-152-0x0000000000400000-0x000000000041F000-memory.dmp Nirsoft behavioral2/memory/3916-153-0x0000000000400000-0x000000000041F000-memory.dmp Nirsoft -
resource yara_rule behavioral2/memory/4284-140-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/4284-142-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/4284-143-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/4284-144-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/3916-148-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/memory/3916-150-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/memory/3916-151-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/memory/3916-152-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/memory/3916-153-0x0000000000400000-0x000000000041F000-memory.dmp upx -
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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Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 3296 set thread context of 2000 3296 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 83 PID 2000 set thread context of 4284 2000 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 84 PID 2000 set thread context of 3916 2000 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 85 -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 3296 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 2000 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe -
Suspicious use of WriteProcessMemory 24 IoCs
description pid Process procid_target PID 3296 wrote to memory of 2000 3296 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 83 PID 3296 wrote to memory of 2000 3296 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 83 PID 3296 wrote to memory of 2000 3296 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 83 PID 3296 wrote to memory of 2000 3296 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 83 PID 3296 wrote to memory of 2000 3296 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 83 PID 3296 wrote to memory of 2000 3296 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 83 PID 3296 wrote to memory of 2000 3296 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 83 PID 3296 wrote to memory of 2000 3296 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 83 PID 2000 wrote to memory of 4284 2000 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 84 PID 2000 wrote to memory of 4284 2000 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 84 PID 2000 wrote to memory of 4284 2000 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 84 PID 2000 wrote to memory of 4284 2000 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 84 PID 2000 wrote to memory of 4284 2000 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 84 PID 2000 wrote to memory of 4284 2000 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 84 PID 2000 wrote to memory of 4284 2000 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 84 PID 2000 wrote to memory of 4284 2000 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 84 PID 2000 wrote to memory of 3916 2000 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 85 PID 2000 wrote to memory of 3916 2000 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 85 PID 2000 wrote to memory of 3916 2000 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 85 PID 2000 wrote to memory of 3916 2000 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 85 PID 2000 wrote to memory of 3916 2000 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 85 PID 2000 wrote to memory of 3916 2000 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 85 PID 2000 wrote to memory of 3916 2000 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 85 PID 2000 wrote to memory of 3916 2000 7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe"C:\Users\Admin\AppData\Local\Temp\7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3296 -
C:\Users\Admin\AppData\Local\Temp\7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe"C:\Users\Admin\AppData\Local\Temp\7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2000 -
C:\Users\Admin\AppData\Local\Temp\7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe/scomma "C:\Users\Admin\AppData\Local\Temp\5AxwbblGa9.ini"3⤵PID:4284
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C:\Users\Admin\AppData\Local\Temp\7e421123e8b3b4b6e8716d6bfde807925f4d749f7cba3493e8147d14b2758e7f.exe/scomma "C:\Users\Admin\AppData\Local\Temp\Eh0yZi6UuM.ini"3⤵
- Accesses Microsoft Outlook accounts
PID:3916
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
5B
MD5d1ea279fb5559c020a1b4137dc4de237
SHA1db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3