Analysis
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max time kernel
106s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
18-01-2024 13:42
Behavioral task
behavioral1
Sample
2024-01-18_329b8aaea517a511908683b56446db99_revil.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-18_329b8aaea517a511908683b56446db99_revil.exe
Resource
win10v2004-20231215-en
General
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Target
2024-01-18_329b8aaea517a511908683b56446db99_revil.exe
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Size
126KB
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MD5
329b8aaea517a511908683b56446db99
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SHA1
9abe20a9c460a3e530cb96658541c6d25700a529
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SHA256
c09c691d40d8b935de4b60c92e1d4fc85f409fb546fd4a5e5b5483ae150fbf20
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SHA512
172d290abe8fef35e8bea43319dc68092c61389257c73e94fcde68f67f97022c1bbda1fe50cd35775bda6e2473af1bad0e5cdb2ff7060e8365bbbe4765a3b3fa
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SSDEEP
1536:oxOUyl20w8bVZQ40iMSO1fY+iUyQs2r8t5p1ySotICS4A6QdZls8XzUXiWr4X5Fg:oMhQNDEtb3A2ZHjUyWr4X5FTDUA
Malware Config
Extracted
C:\Recovery\b39a7x9s1r-readme.txt
http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/121E315B4A0B181F
http://decoder.re/121E315B4A0B181F
Signatures
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Modifies Windows Firewall 1 TTPs 1 IoCs
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Enumerates connected drives 3 TTPs 25 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
2024-01-18_329b8aaea517a511908683b56446db99_revil.exedescription ioc process File opened (read-only) \??\O: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\V: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\J: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\A: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\P: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\T: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\X: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\H: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\Q: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\S: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\F: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\I: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\Z: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\Y: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\D: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\K: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\L: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\M: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\W: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\R: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\U: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\B: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\E: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\G: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened (read-only) \??\N: 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
2024-01-18_329b8aaea517a511908683b56446db99_revil.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\m067s.bmp" 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe -
Drops file in Program Files directory 26 IoCs
Processes:
2024-01-18_329b8aaea517a511908683b56446db99_revil.exedescription ioc process File opened for modification \??\c:\program files\DebugUnregister.jtx 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened for modification \??\c:\program files\SaveEnable.asx 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened for modification \??\c:\program files\DebugShow.mhtml 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened for modification \??\c:\program files\LimitClear.vsw 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened for modification \??\c:\program files\ExitShow.tif 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened for modification \??\c:\program files\MeasureDisable.jfif 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened for modification \??\c:\program files\ClosePop.shtml 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened for modification \??\c:\program files\DisconnectRegister.mp3 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File created \??\c:\program files (x86)\tmp 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened for modification \??\c:\program files\CompareAssert.crw 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened for modification \??\c:\program files\CompressReceive.m4v 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened for modification \??\c:\program files\ConvertToWrite.emf 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened for modification \??\c:\program files\ReadSkip.3gpp 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened for modification \??\c:\program files\StopEdit.asx 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened for modification \??\c:\program files\UninstallWatch.mht 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File created \??\c:\program files\tmp 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File created \??\c:\program files (x86)\b39a7x9s1r-readme.txt 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened for modification \??\c:\program files\EnableGroup.php 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened for modification \??\c:\program files\StepUnlock.pcx 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened for modification \??\c:\program files\CompareMount.vb 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened for modification \??\c:\program files\UnregisterOpen.kix 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened for modification \??\c:\program files\MoveDeny.vsw 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened for modification \??\c:\program files\ProtectRevoke.wma 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened for modification \??\c:\program files\SubmitMeasure.M2V 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File created \??\c:\program files\b39a7x9s1r-readme.txt 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe File opened for modification \??\c:\program files\InitializeSet.mpe 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 10 IoCs
Processes:
2024-01-18_329b8aaea517a511908683b56446db99_revil.exepid process 3812 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe 3812 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe 3812 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe 3812 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe 3812 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe 3812 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe 3812 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe 3812 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe 3812 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe 3812 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
Processes:
2024-01-18_329b8aaea517a511908683b56446db99_revil.exevssvc.exedescription pid process Token: SeDebugPrivilege 3812 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe Token: SeTakeOwnershipPrivilege 3812 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe Token: SeBackupPrivilege 5316 vssvc.exe Token: SeRestorePrivilege 5316 vssvc.exe Token: SeAuditPrivilege 5316 vssvc.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
2024-01-18_329b8aaea517a511908683b56446db99_revil.exedescription pid process target process PID 3812 wrote to memory of 3820 3812 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe netsh.exe PID 3812 wrote to memory of 3820 3812 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe netsh.exe PID 3812 wrote to memory of 3820 3812 2024-01-18_329b8aaea517a511908683b56446db99_revil.exe netsh.exe -
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\2024-01-18_329b8aaea517a511908683b56446db99_revil.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-18_329b8aaea517a511908683b56446db99_revil.exe"1⤵
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\netsh.exenetsh advfirewall firewall set rule group="Network Discovery" new enable=Yes2⤵
- Modifies Windows Firewall
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C:\Windows\system32\wbem\unsecapp.exeC:\Windows\system32\wbem\unsecapp.exe -Embedding1⤵
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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:\Recovery\b39a7x9s1r-readme.txtFilesize
6KB
MD53132ed82a42c60da3ddd09c710e7bdaa
SHA1882274d4d825db888bfa871035ba8b1d4597273a
SHA256b855423c6383a584ff0a4940bdf8bb2baf1a226fadb5331c6aa20f06d29ca56d
SHA512ba4d96e77c31c056aae3e25119f09510a3a767e8aad3725d18c9cbfaa3e5622d618bd9f5f2b198960f37137d23a928574daff607262b308eb182eb905bf9caaa