rook | c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac

General

Target

c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
Size

405KB
MD5

6d87be9212a1a0e92e58e1ed94c589f9
SHA1

19ce538b2597da454abf835cff676c28b8eb66f7
SHA256

c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac
SHA512

278cc5f0215058c6c6943f9e432a335cb824bbb44437b9e28cb4a2ba710e0485aa1388e8a06257b0eaea7aceeb8dabe57663e62b83f0e517eb53a8d3ff7aec67

Score

10^/10

rook ransomware

Malware Config

Extracted

Path

C:\HowToRestoreYourFiles.txt

Family

rook

Ransom Note

-----------Welcome. Again. -------------------- [+]Whats Happen?[+] Your files are encrypted,and currently unavailable. You can check it: all files on you computer has expansion robet. 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 file capacity, please send 3 files not larger than 1M to us, and we will prove that we are capable of restoring. 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 practise - time is much more valuable than money. If we find that a security vendor or law enforcement agency pretends to be you to negotiate with us, we will directly destroy the private key and no longer provide you with decryption services. You have 3 days to contact us for negotiation. Within 3 days, we will provide a 50% discount. If the discount service is not provided for more than 3 days, the files will be leaked to our onion network. Every more than 3 days will increase the number of leaked files. Please use the company email to contact us, otherwise we will not reply. [+] 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:gamol6n6p2p4c3ad7gxmx3ur7wwdwlywebo2azv3vv5qlmjmole2zbyd.onion 2) Our mail box: a)[email protected] b)[email protected] c)If the mailbox fails or is taken over, please open Onion Network to check the new mailbox ------------------------------------------------------------------------------------------------ !!!DANGER!!! DONT try to change files by yourself, DONT use any third party software for restoring your data or antivirus solutions - its may entail damge of the private key and, as result, The Loss all data. !!!!!!! AGAIN: Its in your interests to get your files back. From our side, we (the best specialists) make everything for restoring, please should not interfere. !!!!!!! ONE MORE TIME: Security vendors and law enforcement agencies, please be aware that attacks on us will make us even stronger. !!!!!!!

Emails

a)[email protected]

b)[email protected]

Signatures

Rook
Rook is a ransomware which copies from NightSky ransomware.
ransomware rook
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Modifies extensions of user files 2 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\WaitJoin.crw => C:\Users\Admin\Pictures\WaitJoin.crw.Rook	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened for modification	C:\Users\Admin\Pictures\WaitJoin.crw.Rook	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe

Deletes itself 1 IoCs

pid	Process
1756	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe

Enumerates connected drives 3 TTPs 24 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)	\??\Q:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\Y:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\H:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\K:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\V:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\E:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\T:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\I:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\O:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\J:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\L:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\W:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\U:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\P:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\A:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\S:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\F:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\Z:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\X:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\B:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\R:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\G:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\N:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
File opened (read-only)	\??\M:	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe

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

System Information Discovery
T1082

Interacts with shadow copies 2 TTPs 2 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1107

Inhibit System Recovery

T1490

pid	Process
468	vssadmin.exe
1848	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
308	NOTEPAD.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1756	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1756	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	908	vssvc.exe
Token: SeRestorePrivilege	908	vssvc.exe
Token: SeAuditPrivilege	908	vssvc.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1756 wrote to memory of 1468	1756	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe	28
PID 1756 wrote to memory of 1468	1756	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe	28
PID 1756 wrote to memory of 1468	1756	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe	28
PID 1468 wrote to memory of 468	1468	cmd.exe	30
PID 1468 wrote to memory of 468	1468	cmd.exe	30
PID 1468 wrote to memory of 468	1468	cmd.exe	30
PID 1756 wrote to memory of 1384	1756	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe	34
PID 1756 wrote to memory of 1384	1756	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe	34
PID 1756 wrote to memory of 1384	1756	c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe	34
PID 1384 wrote to memory of 1848	1384	cmd.exe	36
PID 1384 wrote to memory of 1848	1384	cmd.exe	36
PID 1384 wrote to memory of 1848	1384	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe
"C:\Users\Admin\AppData\Local\Temp\c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.exe"
1⤵
- Modifies extensions of user files
- Deletes itself
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:1756
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1468
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:468
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1384
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1848

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:908

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Public\Desktop\HowToRestoreYourFiles.txt
1⤵
- Opens file in notepad (likely ransom note)
PID:308