Analysis
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max time kernel
150s -
max time network
158s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
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submitted
03-03-2024 01:34
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 (633) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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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 1 IoCs
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Drops desktop.ini file(s) 64 IoCs
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Drops file in System32 directory 1 IoCs
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Drops file in Program Files directory 64 IoCs
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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 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\Ransomware\CoronaVirus.exe"C:\Users\Admin\AppData\Local\Temp\Ransomware\CoronaVirus.exe"1⤵
- 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:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4024 --field-trial-handle=2240,i,16875000905773190493,11379096115878622792,262144 --variations-seed-version /prefetch:81⤵
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe.id-F75D7724.[coronavirus@qq.com].ncovFilesize
256KB
MD5ec87a838931d4d5d2e94a04644788a55
SHA12e000fa7e85759c7f4c254d4d9c33ef481e459a7
SHA2568a39d2abd3999ab73c34db2476849cddf303ce389b35826850f9a700589b4a90
SHA5129dd0c30167fbeaf68dfbbad8e1af552a7a1fcae120b6e04f1b41fa76c76d5a78922ff828f5cffd8c02965cde57d63dcbfb4c479b3cb49c9d8107a7d5244e9d03
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memory/320-0-0x0000000000400000-0x000000000056F000-memory.dmpFilesize
1.4MB
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memory/320-1-0x000000000ADC0000-0x000000000ADF4000-memory.dmpFilesize
208KB
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memory/320-2-0x0000000000400000-0x000000000056F000-memory.dmpFilesize
1.4MB
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memory/320-2395-0x0000000000400000-0x000000000056F000-memory.dmpFilesize
1.4MB
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memory/320-11748-0x000000000ADC0000-0x000000000ADF4000-memory.dmpFilesize
208KB