Analysis
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max time kernel
300s -
max time network
272s -
platform
windows10-2004_x64 -
resource
win10v2004-20240709-en -
resource tags
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submitted
27-07-2024 00:11
General
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Target
CoronaVirus.exe
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Size
1.0MB
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MD5
055d1462f66a350d9886542d4d79bc2b
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SHA1
f1086d2f667d807dbb1aa362a7a809ea119f2565
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SHA256
dddf7894b2e6aafa1903384759d68455c3a4a8348a7e2da3bd272555eba9bec0
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SHA512
2c5e570226252bdb2104c90d5b75f11493af8ed1be8cb0fd14e3f324311a82138753064731b80ce8e8b120b3fe7009b21a50e9f4583d534080e28ab84b83fee1
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SSDEEP
24576:FRYz/ERA0eMuWfHvgPw/83JI8CorP9qY0:FE/yADMuYvgP93JIc2
Malware Config
Extracted
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta
Signatures
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Dharma
Dharma is a ransomware that uses security software installation to hide malicious activities.
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Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
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Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Renames multiple (525) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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Credentials from Password Stores: Windows Credential Manager 1 TTPs
Suspicious access to Credentials History.
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Drops startup file 6 IoCs
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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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Adds Run key to start application 2 TTPs 3 IoCs
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Drops desktop.ini file(s) 64 IoCs
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Drops file in System32 directory 2 IoCs
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Drops file in Program Files directory 64 IoCs
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Browser Information Discovery 1 TTPs
Enumerate browser information.
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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 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
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Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
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Interacts with shadow copies 3 TTPs 2 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
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Suspicious use of AdjustPrivilegeToken 6 IoCs
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Suspicious use of FindShellTrayWindow 64 IoCs
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Suspicious use of SendNotifyMessage 64 IoCs
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Suspicious use of WriteProcessMemory 12 IoCs
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Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\CoronaVirus.exe"C:\Users\Admin\AppData\Local\Temp\CoronaVirus.exe"1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Drops desktop.ini file(s)
- Drops file in System32 directory
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"2⤵
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C:\Windows\system32\mode.commode con cp select=12513⤵
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C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet3⤵
- Interacts with shadow copies
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\mode.commode con cp select=12513⤵
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C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet3⤵
- Interacts with shadow copies
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C:\Windows\System32\mshta.exe"C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"2⤵
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C:\Windows\System32\mshta.exe"C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"2⤵
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\werfault.exewerfault.exe /h /shared Global\bd998032e7c548e6b075da10258d71fb /t 22232 /p 222401⤵
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Drops startup file
- Checks SCSI registry key(s)
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Direct Volume Access
1Indicator Removal
2File Deletion
2Modify Registry
1Credential Access
Credentials from Password Stores
2Credentials from Web Browsers
1Windows Credential Manager
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.2MB
MD535d9741d2731ce7d95911639af148148
SHA1d9fc060e03cb9d02b0e3a39675a0ec70d6ad0dc3
SHA2564316af22a55462938016ef3974f0705ad271f44337478479b05048120c04c9d5
SHA51230e4bb77855eb686bffa9223cd1c93ce14dc73b690faa931498b8eeb128863aa15a3ab4b9e2c1f8a276775438b6c485d02b8aebefa8ec2c211afba108e2f1232
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Filesize
1.0MB
MD5055d1462f66a350d9886542d4d79bc2b
SHA1f1086d2f667d807dbb1aa362a7a809ea119f2565
SHA256dddf7894b2e6aafa1903384759d68455c3a4a8348a7e2da3bd272555eba9bec0
SHA5122c5e570226252bdb2104c90d5b75f11493af8ed1be8cb0fd14e3f324311a82138753064731b80ce8e8b120b3fe7009b21a50e9f4583d534080e28ab84b83fee1
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Filesize
13KB
MD5a424db153e06078941e4b08e484ccd4a
SHA1b197431478895b1481da8c41f4c27606af8ff6d9
SHA25657733a5ec044654230d3c3c4f4335969304824bfefcc38ce4d40e30a4d768a49
SHA51241ee97f9e0a8d024a14a416a5c61af2b8c6281afd8a31735e30f49f8131c64294b74eb877dff2b50da77f713b9730561feba7e950881f10c6414d2685e18acde
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Filesize
1.4MB
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Filesize
208KB
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Filesize
1.4MB
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Filesize
1.4MB
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Filesize
208KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB