Analysis
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max time kernel
110s -
max time network
113s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
07-01-2025 16:33
Static task
static1
Behavioral task
behavioral1
Sample
dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe
Resource
win10v2004-20241007-en
General
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Target
dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe
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Size
368KB
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MD5
7b3ff7f2f522779c5bd0cc9862190210
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SHA1
efbbee045ba78058f6735a472343fe9748834be8
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SHA256
dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9
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SHA512
ca3acc3d41a819fb37fd7a37c27fb19250846f5174c4d132e8d4e9f30caaa84aa3405d8c65cafba08328b1c11c445d28136de5bca934aee10156304b43ecf9b6
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SSDEEP
6144:bYXlu7PKTgM8jlcud0oTPP/eqTNYDWyys9YIusnowR/gVxoCiLXcisNC79FPQ2Hx:2rTgM8j6QxNpyVY6/gV8F
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/4736-8-0x0000000000400000-0x0000000000459000-memory.dmp family_isrstealer behavioral2/memory/4736-10-0x0000000000400000-0x0000000000459000-memory.dmp family_isrstealer behavioral2/memory/4736-9-0x0000000000400000-0x0000000000459000-memory.dmp family_isrstealer behavioral2/files/0x0007000000023c61-25.dat family_isrstealer behavioral2/memory/4736-65-0x0000000000400000-0x0000000000459000-memory.dmp family_isrstealer behavioral2/memory/400-106-0x0000000000400000-0x0000000000459000-memory.dmp family_isrstealer -
Isrstealer family
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Detected Nirsoft tools 7 IoCs
Free utilities often used by attackers which can steal passwords, product keys, etc.
resource yara_rule behavioral2/memory/4888-57-0x0000000000400000-0x0000000000454000-memory.dmp Nirsoft behavioral2/memory/4888-59-0x0000000000400000-0x0000000000454000-memory.dmp Nirsoft behavioral2/memory/4888-61-0x0000000000400000-0x0000000000454000-memory.dmp Nirsoft behavioral2/memory/4888-53-0x0000000000400000-0x0000000000454000-memory.dmp Nirsoft behavioral2/memory/3996-102-0x0000000000400000-0x0000000000454000-memory.dmp Nirsoft behavioral2/memory/3996-100-0x0000000000400000-0x0000000000454000-memory.dmp Nirsoft behavioral2/memory/3996-104-0x0000000000400000-0x0000000000454000-memory.dmp Nirsoft -
NirSoft WebBrowserPassView 7 IoCs
Password recovery tool for various web browsers
resource yara_rule behavioral2/memory/4888-57-0x0000000000400000-0x0000000000454000-memory.dmp WebBrowserPassView behavioral2/memory/4888-59-0x0000000000400000-0x0000000000454000-memory.dmp WebBrowserPassView behavioral2/memory/4888-61-0x0000000000400000-0x0000000000454000-memory.dmp WebBrowserPassView behavioral2/memory/4888-53-0x0000000000400000-0x0000000000454000-memory.dmp WebBrowserPassView behavioral2/memory/3996-102-0x0000000000400000-0x0000000000454000-memory.dmp WebBrowserPassView behavioral2/memory/3996-100-0x0000000000400000-0x0000000000454000-memory.dmp WebBrowserPassView behavioral2/memory/3996-104-0x0000000000400000-0x0000000000454000-memory.dmp WebBrowserPassView -
Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 IoCs
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\ Host.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\StubPath = "'C:\\Users\\Admin\\AppData\\Roaming\\Host.exe'" Host.exe -
Checks computer location settings 2 TTPs 3 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe Key value queried \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation Host.exe Key value queried \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe -
Executes dropped EXE 9 IoCs
pid Process 2840 Host.exe 4920 FYJEA.exe 4840 FYJEA.exe 4888 FYJEA.exe 400 Host.exe 4812 Host.exe 1064 YSDXT.exe 2272 YSDXT.exe 3996 YSDXT.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 web browsers 3 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
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Samadbond = "C:\\Users\\Admin\\AppData\\Roaming\\Host.exe" Host.exe -
Suspicious use of SetThreadContext 8 IoCs
description pid Process procid_target PID 2324 set thread context of 4736 2324 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 86 PID 2324 set thread context of 2432 2324 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 87 PID 4920 set thread context of 4840 4920 FYJEA.exe 91 PID 4840 set thread context of 4888 4840 FYJEA.exe 92 PID 2840 set thread context of 400 2840 Host.exe 94 PID 2840 set thread context of 4812 2840 Host.exe 95 PID 1064 set thread context of 2272 1064 YSDXT.exe 98 PID 2272 set thread context of 3996 2272 YSDXT.exe 99 -
resource yara_rule behavioral2/memory/4736-5-0x0000000000400000-0x0000000000459000-memory.dmp upx behavioral2/memory/4736-8-0x0000000000400000-0x0000000000459000-memory.dmp upx behavioral2/memory/4736-10-0x0000000000400000-0x0000000000459000-memory.dmp upx behavioral2/memory/4736-9-0x0000000000400000-0x0000000000459000-memory.dmp upx behavioral2/memory/4736-7-0x0000000000400000-0x0000000000459000-memory.dmp upx behavioral2/memory/4736-65-0x0000000000400000-0x0000000000459000-memory.dmp upx behavioral2/memory/400-106-0x0000000000400000-0x0000000000459000-memory.dmp upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 12 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language FYJEA.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language YSDXT.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language FYJEA.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Host.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Host.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language YSDXT.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Host.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language FYJEA.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language YSDXT.exe -
Suspicious behavior: EnumeratesProcesses 16 IoCs
pid Process 4920 FYJEA.exe 4920 FYJEA.exe 4920 FYJEA.exe 4920 FYJEA.exe 4920 FYJEA.exe 4920 FYJEA.exe 4920 FYJEA.exe 4920 FYJEA.exe 1064 YSDXT.exe 1064 YSDXT.exe 1064 YSDXT.exe 1064 YSDXT.exe 1064 YSDXT.exe 1064 YSDXT.exe 1064 YSDXT.exe 1064 YSDXT.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 2324 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 4736 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 2840 Host.exe 4920 FYJEA.exe 400 Host.exe 1064 YSDXT.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 2324 wrote to memory of 4736 2324 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 86 PID 2324 wrote to memory of 4736 2324 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 86 PID 2324 wrote to memory of 4736 2324 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 86 PID 2324 wrote to memory of 4736 2324 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 86 PID 2324 wrote to memory of 4736 2324 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 86 PID 2324 wrote to memory of 4736 2324 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 86 PID 2324 wrote to memory of 4736 2324 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 86 PID 2324 wrote to memory of 4736 2324 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 86 PID 2324 wrote to memory of 2432 2324 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 87 PID 2324 wrote to memory of 2432 2324 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 87 PID 2324 wrote to memory of 2432 2324 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 87 PID 2324 wrote to memory of 2432 2324 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 87 PID 2324 wrote to memory of 2432 2324 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 87 PID 2324 wrote to memory of 2432 2324 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 87 PID 2324 wrote to memory of 2432 2324 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 87 PID 2324 wrote to memory of 2432 2324 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 87 PID 2324 wrote to memory of 2432 2324 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 87 PID 4736 wrote to memory of 4920 4736 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 88 PID 4736 wrote to memory of 4920 4736 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 88 PID 4736 wrote to memory of 4920 4736 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 88 PID 2432 wrote to memory of 2840 2432 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 89 PID 2432 wrote to memory of 2840 2432 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 89 PID 2432 wrote to memory of 2840 2432 dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe 89 PID 4920 wrote to memory of 4840 4920 FYJEA.exe 91 PID 4920 wrote to memory of 4840 4920 FYJEA.exe 91 PID 4920 wrote to memory of 4840 4920 FYJEA.exe 91 PID 4920 wrote to memory of 4840 4920 FYJEA.exe 91 PID 4920 wrote to memory of 4840 4920 FYJEA.exe 91 PID 4920 wrote to memory of 4840 4920 FYJEA.exe 91 PID 4920 wrote to memory of 4840 4920 FYJEA.exe 91 PID 4920 wrote to memory of 4840 4920 FYJEA.exe 91 PID 4920 wrote to memory of 4840 4920 FYJEA.exe 91 PID 4920 wrote to memory of 4840 4920 FYJEA.exe 91 PID 4920 wrote to memory of 4840 4920 FYJEA.exe 91 PID 4920 wrote to memory of 4840 4920 FYJEA.exe 91 PID 4920 wrote to memory of 4840 4920 FYJEA.exe 91 PID 4840 wrote to memory of 4888 4840 FYJEA.exe 92 PID 4840 wrote to memory of 4888 4840 FYJEA.exe 92 PID 4840 wrote to memory of 4888 4840 FYJEA.exe 92 PID 4840 wrote to memory of 4888 4840 FYJEA.exe 92 PID 4840 wrote to memory of 4888 4840 FYJEA.exe 92 PID 2840 wrote to memory of 400 2840 Host.exe 94 PID 2840 wrote to memory of 400 2840 Host.exe 94 PID 2840 wrote to memory of 400 2840 Host.exe 94 PID 2840 wrote to memory of 400 2840 Host.exe 94 PID 2840 wrote to memory of 400 2840 Host.exe 94 PID 2840 wrote to memory of 400 2840 Host.exe 94 PID 2840 wrote to memory of 400 2840 Host.exe 94 PID 2840 wrote to memory of 400 2840 Host.exe 94 PID 2840 wrote to memory of 4812 2840 Host.exe 95 PID 2840 wrote to memory of 4812 2840 Host.exe 95 PID 2840 wrote to memory of 4812 2840 Host.exe 95 PID 2840 wrote to memory of 4812 2840 Host.exe 95 PID 2840 wrote to memory of 4812 2840 Host.exe 95 PID 2840 wrote to memory of 4812 2840 Host.exe 95 PID 2840 wrote to memory of 4812 2840 Host.exe 95 PID 2840 wrote to memory of 4812 2840 Host.exe 95 PID 2840 wrote to memory of 4812 2840 Host.exe 95 PID 400 wrote to memory of 1064 400 Host.exe 96 PID 400 wrote to memory of 1064 400 Host.exe 96 PID 400 wrote to memory of 1064 400 Host.exe 96 PID 1064 wrote to memory of 2272 1064 YSDXT.exe 98 PID 1064 wrote to memory of 2272 1064 YSDXT.exe 98 PID 1064 wrote to memory of 2272 1064 YSDXT.exe 98
Processes
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C:\Users\Admin\AppData\Local\Temp\dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe"C:\Users\Admin\AppData\Local\Temp\dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2324 -
C:\Users\Admin\AppData\Local\Temp\dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe"C:\Users\Admin\AppData\Local\Temp\dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe"2⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4736 -
C:\Users\Admin\AppData\Local\Temp\FYJEA.exe"C:\Users\Admin\AppData\Local\Temp\FYJEA.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4920 -
C:\Users\Admin\AppData\Local\Temp\FYJEA.exe"C:\Users\Admin\AppData\Local\Temp\FYJEA.exe"4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4840 -
C:\Users\Admin\AppData\Local\Temp\FYJEA.exe"C:\Users\Admin\AppData\Local\Temp\FYJEA.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data.dmp5⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4888
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C:\Users\Admin\AppData\Local\Temp\dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe"C:\Users\Admin\AppData\Local\Temp\dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe"2⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2432 -
C:\Users\Admin\AppData\Roaming\Host.exe"C:\Users\Admin\AppData\Roaming\Host.exe" C:\Users\Admin\AppData\Local\Temp\dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9N.exe3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2840 -
C:\Users\Admin\AppData\Roaming\Host.exe"C:\Users\Admin\AppData\Roaming\Host.exe"4⤵
- Checks computer location settings
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:400 -
C:\Users\Admin\AppData\Local\Temp\YSDXT.exe"C:\Users\Admin\AppData\Local\Temp\YSDXT.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1064 -
C:\Users\Admin\AppData\Local\Temp\YSDXT.exe"C:\Users\Admin\AppData\Local\Temp\YSDXT.exe"6⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
PID:2272 -
C:\Users\Admin\AppData\Local\Temp\YSDXT.exe"C:\Users\Admin\AppData\Local\Temp\YSDXT.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data.dmp7⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3996
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C:\Users\Admin\AppData\Roaming\Host.exe"C:\Users\Admin\AppData\Roaming\Host.exe"4⤵
- Boot or Logon Autostart Execution: Active Setup
- Executes dropped EXE
- Adds Run key to start application
- System Location Discovery: System Language Discovery
PID:4812
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Active Setup
1Registry Run Keys / Startup Folder
1Privilege Escalation
Boot or Logon Autostart Execution
2Active Setup
1Registry Run Keys / Startup Folder
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
2Credentials In Files
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
320KB
MD5ccc2260269cb43ddadda9444e3d112f7
SHA1ddab46acc12d7c60a15fa363f88030f1dd539fcb
SHA2568ca1bd039407381c33fb7ab570b6e95b0ce64b0d5ef64a1968f9b55647cc1911
SHA512787d0b4f5d89b840a4917c78e46f963c8c96a96ec005b45d085222ef307c2a76f074c4a65ca033b038e1b7d1419c7cd3c5c5f3075c3ea24e546c68bdd7643fde
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Filesize
54B
MD5c10dbeca73f8835240e08e4511284b83
SHA10032f8f941cc07768189ca6ba32b1beede6b6917
SHA2560b6b62094048f0a069b4582f837afcb941db51340d0b16d578e8cbe8603a071e
SHA51234f7ab8b4ab7b4996b82ffc49198103ef245ee7dd5ccfec793a9ee391b9e9bb30bd3916b4ebeaa9c66a4b5ca42f8572418f16dc83d41073bc94389c19916b967
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Filesize
368KB
MD57b3ff7f2f522779c5bd0cc9862190210
SHA1efbbee045ba78058f6735a472343fe9748834be8
SHA256dc5225380dea039e3ce7b5156361fc68bc205cfdba8c9976f77192f4979f14d9
SHA512ca3acc3d41a819fb37fd7a37c27fb19250846f5174c4d132e8d4e9f30caaa84aa3405d8c65cafba08328b1c11c445d28136de5bca934aee10156304b43ecf9b6