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Analysis
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max time kernel
144s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
24/11/2022, 04:32
Static task
static1
Behavioral task
behavioral1
Sample
378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe
Resource
win10v2004-20220812-en
General
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Target
378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe
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Size
357KB
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MD5
77f0f5817a7664514c609e0a892e3183
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SHA1
377ddd9ce3fac1e075352c7a7ff49189c34fdb4e
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SHA256
378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef
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SHA512
fdf2d80d9d4b1507dda4d5e6fe2cbb810879e8f848b4d7be5d5a2ba1bcf0044c2f3e35a484bd70c76709d5aab81a18491c6fdd365fd02e316c1f8b1b994bffcf
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SSDEEP
6144:sqW+i3FV8tqehoyDZD12PRX9KHjvDbrx6TgIEy0Vi3a/D7GXj2C2SY+XTVyHh2:sD+i3DTKoy725M7dMgIq3Sl2SY+XMB
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 6 IoCs
resource yara_rule behavioral2/memory/1592-136-0x0000000000000000-mapping.dmp family_isrstealer behavioral2/memory/1592-137-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral2/memory/1592-139-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral2/memory/1592-146-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral2/memory/1592-156-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral2/memory/1592-157-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer -
NirSoft MailPassView 2 IoCs
Password recovery tool for various email clients
resource yara_rule behavioral2/memory/4940-154-0x0000000000400000-0x000000000041F000-memory.dmp MailPassView behavioral2/memory/4940-155-0x0000000000400000-0x000000000041F000-memory.dmp MailPassView -
Nirsoft 2 IoCs
resource yara_rule behavioral2/memory/4940-154-0x0000000000400000-0x000000000041F000-memory.dmp Nirsoft behavioral2/memory/4940-155-0x0000000000400000-0x000000000041F000-memory.dmp Nirsoft -
resource yara_rule behavioral2/memory/332-143-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/332-145-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/332-147-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/332-148-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/4940-151-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/memory/4940-153-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/memory/4940-154-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/memory/4940-155-0x0000000000400000-0x000000000041F000-memory.dmp upx -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe -
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-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 4300 set thread context of 1592 4300 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 82 PID 1592 set thread context of 332 1592 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 83 PID 1592 set thread context of 4940 1592 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 85 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Runs net.exe
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Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4300 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 1592 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 4300 wrote to memory of 5040 4300 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 79 PID 4300 wrote to memory of 5040 4300 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 79 PID 4300 wrote to memory of 5040 4300 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 79 PID 5040 wrote to memory of 2060 5040 net.exe 81 PID 5040 wrote to memory of 2060 5040 net.exe 81 PID 5040 wrote to memory of 2060 5040 net.exe 81 PID 4300 wrote to memory of 1592 4300 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 82 PID 4300 wrote to memory of 1592 4300 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 82 PID 4300 wrote to memory of 1592 4300 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 82 PID 4300 wrote to memory of 1592 4300 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 82 PID 4300 wrote to memory of 1592 4300 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 82 PID 4300 wrote to memory of 1592 4300 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 82 PID 4300 wrote to memory of 1592 4300 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 82 PID 4300 wrote to memory of 1592 4300 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 82 PID 1592 wrote to memory of 332 1592 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 83 PID 1592 wrote to memory of 332 1592 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 83 PID 1592 wrote to memory of 332 1592 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 83 PID 1592 wrote to memory of 332 1592 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 83 PID 1592 wrote to memory of 332 1592 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 83 PID 1592 wrote to memory of 332 1592 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 83 PID 1592 wrote to memory of 332 1592 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 83 PID 1592 wrote to memory of 332 1592 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 83 PID 1592 wrote to memory of 4940 1592 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 85 PID 1592 wrote to memory of 4940 1592 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 85 PID 1592 wrote to memory of 4940 1592 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 85 PID 1592 wrote to memory of 4940 1592 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 85 PID 1592 wrote to memory of 4940 1592 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 85 PID 1592 wrote to memory of 4940 1592 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 85 PID 1592 wrote to memory of 4940 1592 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 85 PID 1592 wrote to memory of 4940 1592 378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe"C:\Users\Admin\AppData\Local\Temp\378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4300 -
C:\Windows\SysWOW64\net.exe"C:\Windows\System32\net.exe" stop sharedaccess2⤵
- Suspicious use of WriteProcessMemory
PID:5040 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 stop sharedaccess3⤵PID:2060
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C:\Users\Admin\AppData\Local\Temp\378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe"C:\Users\Admin\AppData\Local\Temp\378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1592 -
C:\Users\Admin\AppData\Local\Temp\378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe/scomma "C:\Users\Admin\AppData\Local\Temp\eppeKo2oor.ini"3⤵PID:332
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C:\Users\Admin\AppData\Local\Temp\378894a8b085cb5091a4028cb80cab7a9c939e2efc208c38c13106ca49847bef.exe/scomma "C:\Users\Admin\AppData\Local\Temp\zgJ8jDclVI.ini"3⤵
- Accesses Microsoft Outlook accounts
PID:4940
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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