Analysis
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max time kernel
152s -
max time network
158s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
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submitted
16-01-2024 04:00
General
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Target
Ransomware.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
Signatures
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Dharma
Dharma is a ransomware that uses security software installation to hide malicious activities.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Renames multiple (503) 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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Drops startup file 5 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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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Interacts with shadow copies 2 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 3 IoCs
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Suspicious use of WriteProcessMemory 16 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\Ransomware.CoronaVirus.exe"C:\Users\Admin\AppData\Local\Temp\Ransomware.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
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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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\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
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2.9MB
MD53e300ca07b1057957e687876d3e4fe46
SHA17a4ac65dc9ea5d994af26a605870359ad5af4082
SHA25623b9d91a5c0991fdfb4a36fb6e3f6df6e1ac9f7bd4f6ce98666405c85423375d
SHA512c7cf3c307cd3bb6aa134dae36d24212af237efee5b8032c1efce9eb3665cc59278931419e20f38b9d175418834354006d507eb10275615893596cc6f43f2ecec
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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