General
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Target
08dc6c6bc916f05577694a26c660b9a500e6d72c8c9a863f52440d17b798c2caN
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Size
672KB
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Sample
241006-ev4f3swhjd
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MD5
0cb651bf414b2fc0cef464870ab1e850
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SHA1
fc86f69e2554f69b387ceb629decc998720dae85
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SHA256
08dc6c6bc916f05577694a26c660b9a500e6d72c8c9a863f52440d17b798c2ca
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SHA512
e49d2fc3fe3fe297e18cfea5f66376f0ee116b6fadbf8fa1ecc58248877cbdf2047d636d55940a5bbcb691032aa508bad7e42054d00a4c251dc86f753b5db00c
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SSDEEP
12288:cO3CUmFTPWO2YP1SifXtUsn1Fv2RaDlVkvb:73rmAlYNXvtUsORaDIv
Static task
static1
Behavioral task
behavioral1
Sample
08dc6c6bc916f05577694a26c660b9a500e6d72c8c9a863f52440d17b798c2caN.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
08dc6c6bc916f05577694a26c660b9a500e6d72c8c9a863f52440d17b798c2caN.exe
Resource
win10v2004-20240802-en
Malware Config
Targets
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Target
08dc6c6bc916f05577694a26c660b9a500e6d72c8c9a863f52440d17b798c2caN
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Size
672KB
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MD5
0cb651bf414b2fc0cef464870ab1e850
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SHA1
fc86f69e2554f69b387ceb629decc998720dae85
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SHA256
08dc6c6bc916f05577694a26c660b9a500e6d72c8c9a863f52440d17b798c2ca
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SHA512
e49d2fc3fe3fe297e18cfea5f66376f0ee116b6fadbf8fa1ecc58248877cbdf2047d636d55940a5bbcb691032aa508bad7e42054d00a4c251dc86f753b5db00c
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SSDEEP
12288:cO3CUmFTPWO2YP1SifXtUsn1Fv2RaDlVkvb:73rmAlYNXvtUsORaDIv
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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
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Modifies WinLogon for persistence
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Adds policy Run key to start application
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Modifies Windows Firewall
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Loads dropped DLL
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Adds Run key to start application
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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
2Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
2Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
3Pre-OS Boot
1Bootkit
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
2Credentials In Files
2