Analysis
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max time kernel
102s -
max time network
141s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
24/04/2022, 03:14
Static task
static1
Behavioral task
behavioral1
Sample
db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe
Resource
win10v2004-20220414-en
General
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Target
db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe
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Size
228KB
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MD5
e134d5a91ed31516566a091c0caa76fe
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SHA1
260c54f8ef9450d2366794f35d0b291bdc133ec5
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SHA256
db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785
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SHA512
4bccd544d3f53e4240b62651465eee6347cf54501437cf7d6f79060707ba702f4ff16435aeb342099f4b238e7b7372a60a2271b3a9b537e4893d743874c8d1db
Malware Config
Extracted
C:\How_To_Decrypt_My_Files.txt
ragnarok
Signatures
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Ragnarok
Ransomware family deployed from Citrix servers infected via CVE-2019-19781.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 5064 bcdedit.exe 2880 bcdedit.exe -
Modifies Windows Firewall 1 TTPs
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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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Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2488 vssadmin.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2412 db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe 2412 db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeBackupPrivilege 4496 vssvc.exe Token: SeRestorePrivilege 4496 vssvc.exe Token: SeAuditPrivilege 4496 vssvc.exe -
Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 2412 wrote to memory of 1232 2412 db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe 84 PID 2412 wrote to memory of 1232 2412 db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe 84 PID 2412 wrote to memory of 1428 2412 db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe 85 PID 2412 wrote to memory of 1428 2412 db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe 85 PID 2412 wrote to memory of 1612 2412 db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe 86 PID 2412 wrote to memory of 1612 2412 db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe 86 PID 2412 wrote to memory of 1528 2412 db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe 87 PID 2412 wrote to memory of 1528 2412 db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe 87 PID 1232 wrote to memory of 2488 1232 cmd.exe 88 PID 1232 wrote to memory of 2488 1232 cmd.exe 88 PID 1428 wrote to memory of 5064 1428 cmd.exe 89 PID 1428 wrote to memory of 5064 1428 cmd.exe 89 PID 1612 wrote to memory of 2880 1612 cmd.exe 90 PID 1612 wrote to memory of 2880 1612 cmd.exe 90 PID 1528 wrote to memory of 452 1528 cmd.exe 91 PID 1528 wrote to memory of 452 1528 cmd.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe"C:\Users\Admin\AppData\Local\Temp\db8b499d613b604a439bca37c3be2f578bdfcde1b2271eccbcf22db85996e785.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2412 -
C:\Windows\SYSTEM32\cmd.execmd.exe /c vssadmin delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:1232 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:2488
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C:\Windows\SYSTEM32\cmd.execmd.exe /c bcdedit /set {current} bootstatuspolicy ignoreallfailures2⤵
- Suspicious use of WriteProcessMemory
PID:1428 -
C:\Windows\system32\bcdedit.exebcdedit /set {current} bootstatuspolicy ignoreallfailures3⤵
- Modifies boot configuration data using bcdedit
PID:5064
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C:\Windows\SYSTEM32\cmd.execmd.exe /c bcdedit /set {current} recoveryenabled no2⤵
- Suspicious use of WriteProcessMemory
PID:1612 -
C:\Windows\system32\bcdedit.exebcdedit /set {current} recoveryenabled no3⤵
- Modifies boot configuration data using bcdedit
PID:2880
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C:\Windows\SYSTEM32\cmd.execmd.exe /c netsh advfirewall set allprofiles state off2⤵
- Suspicious use of WriteProcessMemory
PID:1528 -
C:\Windows\system32\netsh.exenetsh advfirewall set allprofiles state off3⤵PID:452
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4496