d55f983c994caa160ec63a59f6b4250fe67fb3e8c43a388aec60a4a6978e9f1e

General

Target

revil.exe
Size

890KB
MD5

561cffbaba71a6e8cc1cdceda990ead4
SHA1

5162f14d75e96edb914d1756349d6e11583db0b0
SHA256

d55f983c994caa160ec63a59f6b4250fe67fb3e8c43a388aec60a4a6978e9f1e
SHA512

09149b9825db2c9e6d2ec6665abc64b0b7aaafaa47c921c5bf0062cd7bedd1fc64cf54646a098f45fc4b930f5fbecee586fe839950c9135f64ea722b00baa50e

Score

10^/10

evasion ransomware

Malware Config

Extracted

Path

C:\83jn3yv8wu-readme.txt

Ransom Note

---=== Welcome. Again. ===--- [-] Whats HapPen? [-] Your files are encrypted, and currently unavailable. You can check it: all files on your system has extension 83jn3yv8wu. By the way, everything is possible to recover (restore), but you need to follow our instructions. Otherwise, you cant return your data (NEVER). [+] What guarantees? [+] Its just a business. We absolutely do not care about you and your deals, except getting benefits. If we do not do our work and liabilities - nobody will not cooperate with us. Its not in our interests. To check the ability of returning files, You should go to our website. There you can decrypt one file for free. That is our guarantee. If you will not cooperate with our service - for us, its does not matter. But you will lose your time and data, cause just we have the private key. In practice - time is much more valuable than money. [+] How to get access on website? [+] You have two ways: 1) [Recommended] Using a TOR browser! a) Download and install TOR browser from this site: https://torproject.org/ b) Open our website: http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/BF0A2E8384878F11 2) If TOR blocked in your country, try to use VPN! But you can use our secondary website. For this: a) Open your any browser (Chrome, Firefox, Opera, IE, Edge) b) Open our secondary website: http://decoder.re/BF0A2E8384878F11 Warning: secondary website can be blocked, thats why first variant much better and more available. When you open our website, put the following data in the input form: Key: T2cDo+J9kaMtlDH8cdxnKW1LqGAN2Ujv1++DrqMCSjJ8ZZyv9A51/WfjQHwlMkfx YSg/fmEAq2L/iYsKhUfQjtdbv5cw0lLz9Aj4OP5Scs4iHluKgFSuJw4tEwb9sAMB 3ZsiUiqqZ2bNTl4CrV/KUAet/dX/XCHP3yLCpyfKdYKJYAa8u4HL0I9By+tnndJv FDXnqUy/3DCb68/TaqXFXXnEEiP+sCcTumAKeBif757no5T1MReRaKLCIBMk4KEQ H6ZYZomo3uzSCXFpV54YoP5+JQZNsg0yiLQjBwjyarQ3jaGSU1rkYx35EyF32iTV z8rLds9UzrtRShv24g1YNOklDXtOol8oxvpQnDKhJbHSBXQuRplwKh/uGDJGY/+F 4aNbtCnt8OSNVsPTsjuL0VSGwuUCWgfDecFRoIhrr3LtW8XTzhWauD1I+qiEH2zy tQUUGQHKUXceky1gxhNxsFhfBRlG4fx91peYIh74CCZXgw40YcPAXp9TlG3M77hy ShCBRlmtOyMjbpkWk59ui/T7m8P/nmhOzAJKh5bo8ecMQF2JFA2Xku7/9I6hu05T Y2hoMswq14yMKGwHsfe4xxVX+pjIjh98O0rb9vtjKKP2n0urS5UCms5ggtQYUPHU BdwJZPcojnLH5oOPIMW790Qmy4Y6V+LA5C7BbGOpHWRWDidYMP6tfZ08s9V8ZHAE lkXH56P1E8aQc2dHfxfZ7dKE8VtwTIKvHTObVOz5Re4kSc4B6d0xoX/8WoOvfzqj u2DZZOd/MS65bHO8AqwXXBat7lCI91alvvqwjvbRO4rK6AWjxOAcjitzwYnjxIEh Mz7YeVW0hBxn5q1QRIXslk9VK9/RyV+vmEeJ63RydCB6oijzpQWobEfPVb6SXhfh nPiSsf8HnD7/MADHzm+r2B2cWT+KYyVpW69ueuikYs7ZsepD3aBn+3zSLgkkr2nv QGGn2PIvKHxDluhoEEq9Mjh+HSCAkC6/FENyZHkFiLEd70IFkMObjLxp3iUEzrX4 DG0GyS4MQWe5a3EikpbHPj9tD3l/RXW5MAOK2M9+peE9zqsRZ09QTAhHG0H4rEK2 +f+igu645F24D9wtt0HHRlPCxqwmLmvO4w8KNX16BcUyT3rehNsAlmYs/vCW9KTZ kRykeYifo8mbtwrt6Qn3N9moIirOIz8UPohj7n3JuQeSvPFFHRJSbXZGzmsTxIsz Fa8cDMYm1Af444fujPmbWuWsv1l/lTSVtYnel4ZNEpGDIPO8Ao6TQVpZXmXqDVgo 4vEMuZR8BKVEe9qi0A8= ----------------------------------------------------------------------------------------- !!! DANGER !!! DON'T try to change files by yourself, DON'T use any third party software for restoring your data or antivirus solutions - its may entail damage of the private key and, as result, The Loss all data. !!! !!! !!! ONE MORE TIME: Its in your interests to get your files back. From our side, we (the best specialists) make everything for restoring, but please should not interfere. !!! !!! !!!

URLs

http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/BF0A2E8384878F11

http://decoder.re/BF0A2E8384878F11

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2148	MsMpEng.exe

Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

Modifies extensions of user files 14 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\CompareDeny.crw => \??\c:\users\admin\pictures\CompareDeny.crw.83jn3yv8wu	MsMpEng.exe
File renamed	C:\Users\Admin\Pictures\MoveSubmit.crw => \??\c:\users\admin\pictures\MoveSubmit.crw.83jn3yv8wu	MsMpEng.exe
File renamed	C:\Users\Admin\Pictures\OptimizeResume.tiff => \??\c:\users\admin\pictures\OptimizeResume.tiff.83jn3yv8wu	MsMpEng.exe
File renamed	C:\Users\Admin\Pictures\ApproveGet.tif => \??\c:\users\admin\pictures\ApproveGet.tif.83jn3yv8wu	MsMpEng.exe
File renamed	C:\Users\Admin\Pictures\InitializeDismount.raw => \??\c:\users\admin\pictures\InitializeDismount.raw.83jn3yv8wu	MsMpEng.exe
File renamed	C:\Users\Admin\Pictures\JoinInvoke.crw => \??\c:\users\admin\pictures\JoinInvoke.crw.83jn3yv8wu	MsMpEng.exe
File renamed	C:\Users\Admin\Pictures\ConvertFromMove.tif => \??\c:\users\admin\pictures\ConvertFromMove.tif.83jn3yv8wu	MsMpEng.exe
File renamed	C:\Users\Admin\Pictures\CopyApprove.tif => \??\c:\users\admin\pictures\CopyApprove.tif.83jn3yv8wu	MsMpEng.exe
File renamed	C:\Users\Admin\Pictures\EditDebug.crw => \??\c:\users\admin\pictures\EditDebug.crw.83jn3yv8wu	MsMpEng.exe
File renamed	C:\Users\Admin\Pictures\EnableStep.crw => \??\c:\users\admin\pictures\EnableStep.crw.83jn3yv8wu	MsMpEng.exe
File opened for modification	\??\c:\users\admin\pictures\OptimizeResume.tiff	MsMpEng.exe
File renamed	C:\Users\Admin\Pictures\ProtectCheckpoint.tif => \??\c:\users\admin\pictures\ProtectCheckpoint.tif.83jn3yv8wu	MsMpEng.exe
File renamed	C:\Users\Admin\Pictures\ResolveReceive.tif => \??\c:\users\admin\pictures\ResolveReceive.tif.83jn3yv8wu	MsMpEng.exe
File renamed	C:\Users\Admin\Pictures\TestSend.crw => \??\c:\users\admin\pictures\TestSend.crw.83jn3yv8wu	MsMpEng.exe

Enumerates connected drives 3 TTPs 25 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\J:	MsMpEng.exe
File opened (read-only)	\??\K:	MsMpEng.exe
File opened (read-only)	\??\N:	MsMpEng.exe
File opened (read-only)	\??\S:	MsMpEng.exe
File opened (read-only)	\??\T:	MsMpEng.exe
File opened (read-only)	\??\B:	MsMpEng.exe
File opened (read-only)	\??\G:	MsMpEng.exe
File opened (read-only)	\??\H:	MsMpEng.exe
File opened (read-only)	\??\V:	MsMpEng.exe
File opened (read-only)	\??\Y:	MsMpEng.exe
File opened (read-only)	\??\Q:	MsMpEng.exe
File opened (read-only)	\??\U:	MsMpEng.exe
File opened (read-only)	\??\I:	MsMpEng.exe
File opened (read-only)	\??\O:	MsMpEng.exe
File opened (read-only)	\??\P:	MsMpEng.exe
File opened (read-only)	\??\W:	MsMpEng.exe
File opened (read-only)	\??\X:	MsMpEng.exe
File opened (read-only)	\??\Z:	MsMpEng.exe
File opened (read-only)	\??\D:	MsMpEng.exe
File opened (read-only)	\??\A:	MsMpEng.exe
File opened (read-only)	\??\L:	MsMpEng.exe
File opened (read-only)	\??\R:	MsMpEng.exe
File opened (read-only)	\??\E:	MsMpEng.exe
File opened (read-only)	\??\F:	MsMpEng.exe
File opened (read-only)	\??\M:	MsMpEng.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ox7610fkrs7.bmp"	MsMpEng.exe

Drops file in Program Files directory 15 IoCs

description	ioc	Process
File opened for modification	\??\c:\program files\ConvertRegister.xhtml	MsMpEng.exe
File opened for modification	\??\c:\program files\ReceiveSplit.vsdx	MsMpEng.exe
File opened for modification	\??\c:\program files\UnblockExport.ttf	MsMpEng.exe
File created	\??\c:\program files\tmp	MsMpEng.exe
File opened for modification	\??\c:\program files\NewLimit.ttc	MsMpEng.exe
File opened for modification	\??\c:\program files\TestAdd.xht	MsMpEng.exe
File opened for modification	\??\c:\program files\CloseTest.ttc	MsMpEng.exe
File opened for modification	\??\c:\program files\DismountUnpublish.tmp	MsMpEng.exe
File opened for modification	\??\c:\program files\PingComplete.rle	MsMpEng.exe
File opened for modification	\??\c:\program files\ResetWait.rle	MsMpEng.exe
File opened for modification	\??\c:\program files\TestAdd.otf	MsMpEng.exe
File created	\??\c:\program files (x86)\tmp	MsMpEng.exe
File created	\??\c:\program files (x86)\83jn3yv8wu-readme.txt	MsMpEng.exe
File opened for modification	\??\c:\program files\SetSuspend.odt	MsMpEng.exe
File created	\??\c:\program files\83jn3yv8wu-readme.txt	MsMpEng.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\mpsvc.dll	revil.exe
File created	C:\Windows\MsMpEng.exe	revil.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2148	MsMpEng.exe
2148	MsMpEng.exe
2148	MsMpEng.exe
2148	MsMpEng.exe
2148	MsMpEng.exe
2148	MsMpEng.exe
2148	MsMpEng.exe
2148	MsMpEng.exe
2148	MsMpEng.exe
2148	MsMpEng.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2148	MsMpEng.exe
Token: SeTakeOwnershipPrivilege	2148	MsMpEng.exe
Token: SeBackupPrivilege	1324	vssvc.exe
Token: SeRestorePrivilege	1324	vssvc.exe
Token: SeAuditPrivilege	1324	vssvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3956 wrote to memory of 2148	3956	revil.exe	70
PID 3956 wrote to memory of 2148	3956	revil.exe	70
PID 3956 wrote to memory of 2148	3956	revil.exe	70
PID 2148 wrote to memory of 2224	2148	MsMpEng.exe	79
PID 2148 wrote to memory of 2224	2148	MsMpEng.exe	79
PID 2148 wrote to memory of 2224	2148	MsMpEng.exe	79

C:\Users\Admin\AppData\Local\Temp\revil.exe
"C:\Users\Admin\AppData\Local\Temp\revil.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3956
- C:\Windows\MsMpEng.exe
  "C:\Windows\MsMpEng.exe"
  2⤵
  - Executes dropped EXE
  - Modifies extensions of user files
  - 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
  PID:2148
- - C:\Windows\SysWOW64\netsh.exe
    netsh advfirewall firewall set rule group="Network Discovery" new enable=Yes
    3⤵
    PID:2224