General
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Target
ExLoader_Installer1.exe
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Size
20.2MB
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Sample
240523-vwqjlsad29
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MD5
06d4e995805a2afd7496f4f4f0000fd2
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SHA1
db80fb0f047f5754aa33781268421407fd07d29e
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SHA256
7ad99c1905e0c0ca46bd97650a50645592a6006f05062aa4580198c41c6491a1
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SHA512
fd4d245e28e6584f7fe3489bccb35341f5957933de442c259a507e04bf07f018bbb1bd769d638a07a42ce7a1677c6bf1aa237f4b22b3a5dcf9ccbc5af43150d7
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SSDEEP
393216:QVZarTJXmFjzqREtDlwcPUTc9t37DMncawXAKaVnayxZtFDb:SZ4TJXmFjzqa5lYTiInf46VnvHr/
Static task
static1
Behavioral task
behavioral1
Sample
ExLoader_Installer1.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
ExLoader_Installer1.exe
Resource
win10v2004-20240426-en
Malware Config
Targets
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Target
ExLoader_Installer1.exe
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Size
20.2MB
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MD5
06d4e995805a2afd7496f4f4f0000fd2
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SHA1
db80fb0f047f5754aa33781268421407fd07d29e
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SHA256
7ad99c1905e0c0ca46bd97650a50645592a6006f05062aa4580198c41c6491a1
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SHA512
fd4d245e28e6584f7fe3489bccb35341f5957933de442c259a507e04bf07f018bbb1bd769d638a07a42ce7a1677c6bf1aa237f4b22b3a5dcf9ccbc5af43150d7
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SSDEEP
393216:QVZarTJXmFjzqREtDlwcPUTc9t37DMncawXAKaVnayxZtFDb:SZ4TJXmFjzqa5lYTiInf46VnvHr/
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Modifies WinLogon for persistence
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Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
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Downloads MZ/PE file
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Drops file in Drivers directory
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Modifies Installed Components in the registry
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Drops startup file
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Executes dropped EXE
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Loads dropped DLL
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Modifies system executable filetype association
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Registers COM server for autorun
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Adds Run key to start application
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Legitimate hosting services abused for malware hosting/C2
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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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Drops file in System32 directory
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Sets desktop wallpaper using registry
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Suspicious use of SetThreadContext
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MITRE ATT&CK Matrix ATT&CK v13
Persistence
Boot or Logon Autostart Execution
4Registry Run Keys / Startup Folder
3Winlogon Helper DLL
1Event Triggered Execution
1Change Default File Association
1Pre-OS Boot
1Bootkit
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
4Registry Run Keys / Startup Folder
3Winlogon Helper DLL
1Abuse Elevation Control Mechanism
1Bypass User Account Control
1Event Triggered Execution
1Change Default File Association
1Scheduled Task/Job
1Defense Evasion
Modify Registry
8Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
1Disable or Modify Tools
1Indicator Removal
1File Deletion
1Pre-OS Boot
1Bootkit
1