Analysis
- max time kernel
214s - max time network
223s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system - submitted
06/01/2023, 19:39
Behavioral task
behavioral1
Sample
64_MEcip.exe
Resource
win7-20221111-en
windows7-x64
16 signatures
150 seconds
Behavioral task
behavioral2
Sample
64_MEcip.exe
Resource
win10v2004-20221111-en
windows10-2004-x64
12 signatures
150 seconds
General
- Target 64_MEcip.exe
- Size 666KB
- Sample230106-ydcftabe33
- SHA256 8c0cc36cba7d54c1c225c95ef0a05f95ed317ffdb17e952e452e6555a719a927
- MD5 623256c79ccd20a1319f553f269b3867
- SHA1 a06b170b22424a87809d65171714a821d732831d
- SHA512 808cb0aa49799d33eb40e432d386b33341aadb220ff941dc5bd9d914baaafadd1c1dc646b24a8ff3a71890d1fd870f684876d8686909d2c902592d7b3fa81da4
- SSDEEP 12288:ZYW1LNT35lDbK/LIVaN8+T7vwqyqhYMhWt918vulAbC9+m:dd35lDbKDIwWUDyqS5ommC9+
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Extracted
Path
-
C:\!-Recovery_Instructions-!.html
Ransom Note
- <!DOCTYPE html> <html lang="en"> <head> <meta charset='utf-8'> <meta name='viewport' content='width=device-width,initial-scale=1'> <title></title> <style> html, body { background-color: #1a1a1a; } body { padding-top: 1rem !important; font-size: 1.3rem; color: white; } #text h2 { font-size: 2rem; font-weight: 600; line-height: 1.125; } .container { max-width: 1152px; flex-grow: 1; margin: 0 auto; position: relative; width: auto; } .box { background-color: #242424; display: block; padding: 1.25rem; border: 1px solid #303030; } a { color: #00b4d8; text-decoration: none; } a:hover { text-decoration: underline; } li { margin-bottom: 10px; } </style> </head> <body> <div class='container'> <div class='box'> <div id='text'> <h2>If you get this message, your network was hacked!</h2> <p>After we gained full access to your servers, we first downloaded a large amount of sensitive data and then encrypted all the data stored on them.</p> <p>That includes personal information on your clients, partners, your personnel, accounting documents, and other crucial files that are necessary for your company to work normally.</p> <p>We used modern complicated algorithms, so you or any recovery service will not be able to decrypt files without our help, wasting time on these attempts instead of negotiations can be fatal for your company.</p> <p>Make sure to act within <span style='color:#f4a261;'>72</span> hours or the negotiations will be considered failed!</p> <p>Inform your superior management about what's going on.</p> <p> Contact us for pricing and decryption software.</p> <p> Contact us by email:<p> <h2>[email protected]</h2> </p>If you do not receive a response within 24 hours, please contact us at our additional contacts:</p> <p> 1) Download for TOX CHAT https://tox.chat/download.html</p> <p> 2) Open chat<p> <p>Add ID Chat: </p><h2>3C9D49B928FDC3C15F0314217623A71B865909B308576B4B0D10AEA62C98677B4A3F160D5C93</h2> <p>If we did not answer you, leave the chat enabled, the operator will contact you!<p> </p>To verify the possibility of the recovery of your files we can decrypted 1-3 file for free.</p> </p>Attach file to the letter (no more than 5Mb).</p> <h2>If you and us succeed the negotiations we will grant you:</h2> <ul> <li>complete confidentiality, we will keep in secret any information regarding to attack, your company will act as if nothing had happened.</li> <li>comprehensive information about vulnerabilities of your network and security report.</li> <li>software and instructions to decrypt all the data that was encrypted.</li> <li>all sensitive downloaded data will be permanently deleted from our cloud storage and we will provide an erasure log.</li> </ul> <h2>Our options if you act like nothing's happening, refuse to make a deal or fail the negotiations:</h2> <ul> <li>inform the media and independent journalists about what happened to your servers. To prove it we'll publish a chunk of private data that you should have ciphered if you care about potential breaches. Moreover, your company will inevitably take decent reputational loss which is hard to assess precisely.</li> <li>inform your clients, employees, partners by phone, e-mail, sms and social networks that you haven't prevent their data leakage. You will violate laws about private data protection.</li> <li>start DDOS attack on you website and infrastructures.</li> <li>personal data stored will be put on sale on the Darknet to find anyone interested to buy useful information regarding your company. It could be data mining agencies or your market competitors.</li> <li>publish all the discovered vulnerabilities found in your network, so anyone will do anything with it.</li> </ul> <h2>Why pay us?</h2> <p>We care about our reputation. You are welcome to google our cases up and be sure that we don't have a single case of failure to provide what we promissed.</p> <p>Turning this issue to a bug bounty will save your private information, reputation and will allow you to use the security report and avoid this kind of situations in future.</p> <h2>Your personal ID</p> Your ID: 21CE934249D6917491ABA98CD042ABC22BDB42F61BCE0726B596F079E479435BF38BC4DE11E26A281AF347AE7B0C325E9154694E0DBBD105C77A2F4A71EA56E5<br>49243612F37C62BE4E33021FBAF53C5A891A8F8BE1E75B7E3BC1B5CA61859D3FB6AD412FE5B6AB3B92D660D50F6B04F5C8BC86E367A64A771E2AD5597815<br>8CFF8E8143E5CBD25F0A2A6E3F757AC9DDA1D1A2C94968BCF37C63C3587375F2E7DCA094A08403E1D49E88F02EB5393EC311B88744320466879BFFA972A9<br>7DC684134D9FCDC80F6E231A39405935A302904C2F4C20EEC90CDCDF54DBE91C0D2AC247D6FB6F721521C0177BB71B7EB602A5C406BF15520B1B0945AA1A<br>4B538EE2F81B5FD8D13F6FC7BD2CA69F5D01CD87817D82687694625CB0E58841CB37AB9D077CB63AE2F4D9384DE0881C13603A5240CD37BB7032EF7424F9<br>667346884C17B3F8D020FB5E4D7B0115DC2D070257E9B17F52857FFB4242EABCAABFC976D9F6A84B34A0621E11A3A7CD3D8C9F5DAFBD9EAF8F4849F2E9E9<br>C5C8619FEE12395FF020B7CDAFE15A170B371A04AB7441D3BB87F46F41D4D53F9A7576D3A806A9DDB70195B2AAA452A569AE8307D399FC3BF7B969DFE9AC<br>7E97A6238287EB4C0356196194531A15D282AE61D11764F82227A1713B12BD9CBA707ECB44E2D3935939F8ED4D917B69F919ABFFF1D035E35D4CE75D7BB0<br>DEC9D46F97D14D3045DB3C7E1A22
Emails
-
<h2>[email protected]</h2>
URLs
-
https://tox.chat/download.html</p>
Signatures
- MedusaLocker
Ransomware with several variants first seen in September 2019.
- MedusaLocker payload 2 IoCs
resource yara_rule behavioral2/files/0x0008000000022df0-135.dat family_medusalocker behavioral2/files/0x0008000000022df0-136.dat family_medusalocker -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 64_MEcip.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" 64_MEcip.exe - Executes dropped EXE 1 IoCs
pid Process 2508 svhost.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 64_MEcip.exe - Drops desktop.ini file(s) 1 IoCs
description ioc Process File opened for modification \??\Z:\$RECYCLE.BIN\S-1-5-21-2971393436-602173351-1645505021-1000\desktop.ini 64_MEcip.exe - Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\I: 64_MEcip.exe File opened (read-only) \??\Q: 64_MEcip.exe File opened (read-only) \??\S: 64_MEcip.exe File opened (read-only) \??\U: 64_MEcip.exe File opened (read-only) \??\X: 64_MEcip.exe File opened (read-only) \??\R: 64_MEcip.exe File opened (read-only) \??\B: 64_MEcip.exe File opened (read-only) \??\E: 64_MEcip.exe File opened (read-only) \??\J: 64_MEcip.exe File opened (read-only) \??\M: 64_MEcip.exe File opened (read-only) \??\N: 64_MEcip.exe File opened (read-only) \??\K: 64_MEcip.exe File opened (read-only) \??\P: 64_MEcip.exe File opened (read-only) \??\V: 64_MEcip.exe File opened (read-only) \??\Y: 64_MEcip.exe File opened (read-only) \??\O: 64_MEcip.exe File opened (read-only) \??\T: 64_MEcip.exe File opened (read-only) \??\W: 64_MEcip.exe File opened (read-only) \??\A: 64_MEcip.exe File opened (read-only) \??\F: 64_MEcip.exe File opened (read-only) \??\G: 64_MEcip.exe File opened (read-only) \??\H: 64_MEcip.exe File opened (read-only) \??\L: 64_MEcip.exe File opened (read-only) \??\Z: 64_MEcip.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe 1448 64_MEcip.exe - Suspicious use of AdjustPrivilegeToken 63 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 908 wmic.exe Token: SeSecurityPrivilege 908 wmic.exe Token: SeTakeOwnershipPrivilege 908 wmic.exe Token: SeLoadDriverPrivilege 908 wmic.exe Token: SeSystemProfilePrivilege 908 wmic.exe Token: SeSystemtimePrivilege 908 wmic.exe Token: SeProfSingleProcessPrivilege 908 wmic.exe Token: SeIncBasePriorityPrivilege 908 wmic.exe Token: SeCreatePagefilePrivilege 908 wmic.exe Token: SeBackupPrivilege 908 wmic.exe Token: SeRestorePrivilege 908 wmic.exe Token: SeShutdownPrivilege 908 wmic.exe Token: SeDebugPrivilege 908 wmic.exe Token: SeSystemEnvironmentPrivilege 908 wmic.exe Token: SeRemoteShutdownPrivilege 908 wmic.exe Token: SeUndockPrivilege 908 wmic.exe Token: SeManageVolumePrivilege 908 wmic.exe Token: 33 908 wmic.exe Token: 34 908 wmic.exe Token: 35 908 wmic.exe Token: 36 908 wmic.exe Token: SeIncreaseQuotaPrivilege 4468 wmic.exe Token: SeSecurityPrivilege 4468 wmic.exe Token: SeTakeOwnershipPrivilege 4468 wmic.exe Token: SeLoadDriverPrivilege 4468 wmic.exe Token: SeSystemProfilePrivilege 4468 wmic.exe Token: SeSystemtimePrivilege 4468 wmic.exe Token: SeProfSingleProcessPrivilege 4468 wmic.exe Token: SeIncBasePriorityPrivilege 4468 wmic.exe Token: SeCreatePagefilePrivilege 4468 wmic.exe Token: SeBackupPrivilege 4468 wmic.exe Token: SeRestorePrivilege 4468 wmic.exe Token: SeShutdownPrivilege 4468 wmic.exe Token: SeDebugPrivilege 4468 wmic.exe Token: SeSystemEnvironmentPrivilege 4468 wmic.exe Token: SeRemoteShutdownPrivilege 4468 wmic.exe Token: SeUndockPrivilege 4468 wmic.exe Token: SeManageVolumePrivilege 4468 wmic.exe Token: 33 4468 wmic.exe Token: 34 4468 wmic.exe Token: 35 4468 wmic.exe Token: 36 4468 wmic.exe Token: SeIncreaseQuotaPrivilege 4488 wmic.exe Token: SeSecurityPrivilege 4488 wmic.exe Token: SeTakeOwnershipPrivilege 4488 wmic.exe Token: SeLoadDriverPrivilege 4488 wmic.exe Token: SeSystemProfilePrivilege 4488 wmic.exe Token: SeSystemtimePrivilege 4488 wmic.exe Token: SeProfSingleProcessPrivilege 4488 wmic.exe Token: SeIncBasePriorityPrivilege 4488 wmic.exe Token: SeCreatePagefilePrivilege 4488 wmic.exe Token: SeBackupPrivilege 4488 wmic.exe Token: SeRestorePrivilege 4488 wmic.exe Token: SeShutdownPrivilege 4488 wmic.exe Token: SeDebugPrivilege 4488 wmic.exe Token: SeSystemEnvironmentPrivilege 4488 wmic.exe Token: SeRemoteShutdownPrivilege 4488 wmic.exe Token: SeUndockPrivilege 4488 wmic.exe Token: SeManageVolumePrivilege 4488 wmic.exe Token: 33 4488 wmic.exe Token: 34 4488 wmic.exe Token: 35 4488 wmic.exe Token: 36 4488 wmic.exe - Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 1448 wrote to memory of 908 1448 64_MEcip.exe 80 PID 1448 wrote to memory of 908 1448 64_MEcip.exe 80 PID 1448 wrote to memory of 908 1448 64_MEcip.exe 80 PID 1448 wrote to memory of 4468 1448 64_MEcip.exe 82 PID 1448 wrote to memory of 4468 1448 64_MEcip.exe 82 PID 1448 wrote to memory of 4468 1448 64_MEcip.exe 82 PID 1448 wrote to memory of 4488 1448 64_MEcip.exe 84 PID 1448 wrote to memory of 4488 1448 64_MEcip.exe 84 PID 1448 wrote to memory of 4488 1448 64_MEcip.exe 84 - System policy modification 1 TTPs 3 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 64_MEcip.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" 64_MEcip.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1" 64_MEcip.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\64_MEcip.exe"C:\Users\Admin\AppData\Local\Temp\64_MEcip.exe"1⤵
- UAC bypass
- Checks whether UAC is enabled
- Drops desktop.ini file(s)
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1448 -
C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:908
-
-
C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:4468
-
-
C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:4488
-
-
C:\Users\Admin\AppData\Roaming\svhost.exeC:\Users\Admin\AppData\Roaming\svhost.exe1⤵
- Executes dropped EXE
PID:2508
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Roaming\svhost.exe
- Size 666KB
- SHA256 8c0cc36cba7d54c1c225c95ef0a05f95ed317ffdb17e952e452e6555a719a927
- MD5 623256c79ccd20a1319f553f269b3867
- SHA1 a06b170b22424a87809d65171714a821d732831d
- SHA512 808cb0aa49799d33eb40e432d386b33341aadb220ff941dc5bd9d914baaafadd1c1dc646b24a8ff3a71890d1fd870f684876d8686909d2c902592d7b3fa81da4
- SSDEEP 12288:ZYW1LNT35lDbK/LIVaN8+T7vwqyqhYMhWt918vulAbC9+m:dd35lDbKDIwWUDyqS5ommC9+
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\svhost.exe
- Size 666KB
- SHA256 8c0cc36cba7d54c1c225c95ef0a05f95ed317ffdb17e952e452e6555a719a927
- MD5 623256c79ccd20a1319f553f269b3867
- SHA1 a06b170b22424a87809d65171714a821d732831d
- SHA512 808cb0aa49799d33eb40e432d386b33341aadb220ff941dc5bd9d914baaafadd1c1dc646b24a8ff3a71890d1fd870f684876d8686909d2c902592d7b3fa81da4
- SSDEEP 12288:ZYW1LNT35lDbK/LIVaN8+T7vwqyqhYMhWt918vulAbC9+m:dd35lDbKDIwWUDyqS5ommC9+
- MD5 SHA1 SHA512 SSDEEP