Analysis
- max time kernel
396s - max time network
457s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system - submitted
01/12/2022, 17:38
Behavioral task
behavioral1
Sample
64ME_bul9.exe
Resource
win7-20221111-en
windows7-x64
14 signatures
150 seconds
Behavioral task
behavioral2
Sample
64ME_bul9.exe
Resource
win10v2004-20221111-en
windows10-2004-x64
12 signatures
150 seconds
General
- Target 64ME_bul9.exe
- Size 666KB
- Sample221201-v7prfscc93
- SHA256 aa4cd5e9ff8ef8e4a72601c03154231631a5179167400a5478ca4282188b1163
- MD5 5b780f32105ff92593db7b30ea2ac9ed
- SHA1 6054922a051ce8d25d5d39565a9ad23575b7fe7f
- SHA512 c93d9eee0cd547d513d3920f6fa5d3e22adaf6e4e7285f196ba4001d512f9ac05452e0243c526c713a880981249dbbad31947b08edf22f5eb53c6c77fb69d13d
- SSDEEP 12288:ZYW1LNT35lDbK/LIVaN8+T7vwqyqhYMhWt918vulAWC9+m:dd35lDbKDIwWUDyqS5omDC9+
- 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 price and get decryption software.</p> <p> Contact us by email:<p> <h2>[email protected]</h2> </p>If you will get no answer within 24 hours contact us by our alternate emails:</p> <h2>[email protected]</h2> </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> BA78CCE28BC3733867F8CD05F26D5BD6D83F5408D2F54B5309D7177F1E7D2A568C3F40FF7B6EDA25297E7600F9CE71A11A7FADC7330A4C0026CF3CDA5AA01A51<br>5ED5D776589530A4A4E3CC347B1A2ADCCC1C3224D98485B73A327FC186C38B217F6774E43D57A8AB992827EA7FEBB350FFE09FCE7D7476D092FF4E23718C<br>3224EC4C14EA49BD1C573ED5CB6DC48B77991A42C3EDCCD18CE4001232A5C63637D205CC710E66192A94D6C57DB9673DB7EEF1F7D31D5851878B816AE3EA<br>4F7AD00890E80496720CAE4D87ACE907E17A6C9521F0C7C930754F0520760203BD64DB4F37728BA164EF79761773C424A892318C8FB250EF5E81C6E0F4A1<br>2A17C9CA71376D423360FE5F195A3FE5E4D927DD18F8CE6637526DA5DC08A3AD252FB4D12B6EEA11E37AF43183A65B152637C905BD563252385C751F1A9B<br>C2292FBE480771EFC383EE1C60BE02A370E49FA5EE455892F083E5DE9BC5FBD102A525AAC0C46FA279A14292E2D4275CA6707CDCD79B57A2E78303B3A338<br>352874BACEF4F1C4944DFAE9E91BEDA9C58ACA6DD92ED6E394CBFA4F9A25D3DD767C0B6D0923061A4D967DDCBB1BBDE8B6CF487DDF5087C7987390EBF983<br>C2B684D1F35AB9B5E240999461DA8A0354E9D0688CA0AD940D701F2DE6AF99678D0347EA7AD64896EF8F8AFFB797BAE35C23AE2D7E2EF601C3EB1DF7A4DE<br>48B6DD546554FE26626E7714377D
Emails
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<h2>[email protected]</h2>
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<h2>[email protected]</h2>
Signatures
- MedusaLocker
Ransomware with several variants first seen in September 2019.
- MedusaLocker payload 2 IoCs
resource yara_rule behavioral2/files/0x000a0000000219bf-135.dat family_medusalocker behavioral2/files/0x000a0000000219bf-136.dat family_medusalocker -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 64ME_bul9.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" 64ME_bul9.exe - Executes dropped EXE 1 IoCs
pid Process 1004 svhost.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 64ME_bul9.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 64ME_bul9.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) \??\U: 64ME_bul9.exe File opened (read-only) \??\Z: 64ME_bul9.exe File opened (read-only) \??\F: 64ME_bul9.exe File opened (read-only) \??\L: 64ME_bul9.exe File opened (read-only) \??\O: 64ME_bul9.exe File opened (read-only) \??\R: 64ME_bul9.exe File opened (read-only) \??\S: 64ME_bul9.exe File opened (read-only) \??\X: 64ME_bul9.exe File opened (read-only) \??\E: 64ME_bul9.exe File opened (read-only) \??\G: 64ME_bul9.exe File opened (read-only) \??\K: 64ME_bul9.exe File opened (read-only) \??\N: 64ME_bul9.exe File opened (read-only) \??\T: 64ME_bul9.exe File opened (read-only) \??\B: 64ME_bul9.exe File opened (read-only) \??\H: 64ME_bul9.exe File opened (read-only) \??\J: 64ME_bul9.exe File opened (read-only) \??\P: 64ME_bul9.exe File opened (read-only) \??\Q: 64ME_bul9.exe File opened (read-only) \??\V: 64ME_bul9.exe File opened (read-only) \??\W: 64ME_bul9.exe File opened (read-only) \??\Y: 64ME_bul9.exe File opened (read-only) \??\A: 64ME_bul9.exe File opened (read-only) \??\I: 64ME_bul9.exe File opened (read-only) \??\M: 64ME_bul9.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 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe 2508 64ME_bul9.exe - Suspicious use of AdjustPrivilegeToken 63 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 1076 wmic.exe Token: SeSecurityPrivilege 1076 wmic.exe Token: SeTakeOwnershipPrivilege 1076 wmic.exe Token: SeLoadDriverPrivilege 1076 wmic.exe Token: SeSystemProfilePrivilege 1076 wmic.exe Token: SeSystemtimePrivilege 1076 wmic.exe Token: SeProfSingleProcessPrivilege 1076 wmic.exe Token: SeIncBasePriorityPrivilege 1076 wmic.exe Token: SeCreatePagefilePrivilege 1076 wmic.exe Token: SeBackupPrivilege 1076 wmic.exe Token: SeRestorePrivilege 1076 wmic.exe Token: SeShutdownPrivilege 1076 wmic.exe Token: SeDebugPrivilege 1076 wmic.exe Token: SeSystemEnvironmentPrivilege 1076 wmic.exe Token: SeRemoteShutdownPrivilege 1076 wmic.exe Token: SeUndockPrivilege 1076 wmic.exe Token: SeManageVolumePrivilege 1076 wmic.exe Token: 33 1076 wmic.exe Token: 34 1076 wmic.exe Token: 35 1076 wmic.exe Token: 36 1076 wmic.exe Token: SeIncreaseQuotaPrivilege 2828 wmic.exe Token: SeSecurityPrivilege 2828 wmic.exe Token: SeTakeOwnershipPrivilege 2828 wmic.exe Token: SeLoadDriverPrivilege 2828 wmic.exe Token: SeSystemProfilePrivilege 2828 wmic.exe Token: SeSystemtimePrivilege 2828 wmic.exe Token: SeProfSingleProcessPrivilege 2828 wmic.exe Token: SeIncBasePriorityPrivilege 2828 wmic.exe Token: SeCreatePagefilePrivilege 2828 wmic.exe Token: SeBackupPrivilege 2828 wmic.exe Token: SeRestorePrivilege 2828 wmic.exe Token: SeShutdownPrivilege 2828 wmic.exe Token: SeDebugPrivilege 2828 wmic.exe Token: SeSystemEnvironmentPrivilege 2828 wmic.exe Token: SeRemoteShutdownPrivilege 2828 wmic.exe Token: SeUndockPrivilege 2828 wmic.exe Token: SeManageVolumePrivilege 2828 wmic.exe Token: 33 2828 wmic.exe Token: 34 2828 wmic.exe Token: 35 2828 wmic.exe Token: 36 2828 wmic.exe Token: SeIncreaseQuotaPrivilege 4620 wmic.exe Token: SeSecurityPrivilege 4620 wmic.exe Token: SeTakeOwnershipPrivilege 4620 wmic.exe Token: SeLoadDriverPrivilege 4620 wmic.exe Token: SeSystemProfilePrivilege 4620 wmic.exe Token: SeSystemtimePrivilege 4620 wmic.exe Token: SeProfSingleProcessPrivilege 4620 wmic.exe Token: SeIncBasePriorityPrivilege 4620 wmic.exe Token: SeCreatePagefilePrivilege 4620 wmic.exe Token: SeBackupPrivilege 4620 wmic.exe Token: SeRestorePrivilege 4620 wmic.exe Token: SeShutdownPrivilege 4620 wmic.exe Token: SeDebugPrivilege 4620 wmic.exe Token: SeSystemEnvironmentPrivilege 4620 wmic.exe Token: SeRemoteShutdownPrivilege 4620 wmic.exe Token: SeUndockPrivilege 4620 wmic.exe Token: SeManageVolumePrivilege 4620 wmic.exe Token: 33 4620 wmic.exe Token: 34 4620 wmic.exe Token: 35 4620 wmic.exe Token: 36 4620 wmic.exe - Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2508 wrote to memory of 1076 2508 64ME_bul9.exe 81 PID 2508 wrote to memory of 1076 2508 64ME_bul9.exe 81 PID 2508 wrote to memory of 1076 2508 64ME_bul9.exe 81 PID 2508 wrote to memory of 2828 2508 64ME_bul9.exe 83 PID 2508 wrote to memory of 2828 2508 64ME_bul9.exe 83 PID 2508 wrote to memory of 2828 2508 64ME_bul9.exe 83 PID 2508 wrote to memory of 4620 2508 64ME_bul9.exe 85 PID 2508 wrote to memory of 4620 2508 64ME_bul9.exe 85 PID 2508 wrote to memory of 4620 2508 64ME_bul9.exe 85 - System policy modification 1 TTPs 3 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 64ME_bul9.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" 64ME_bul9.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1" 64ME_bul9.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\64ME_bul9.exe"C:\Users\Admin\AppData\Local\Temp\64ME_bul9.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:2508 -
C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1076
-
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2828
-
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:4620
-
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C:\Users\Admin\AppData\Roaming\svhost.exeC:\Users\Admin\AppData\Roaming\svhost.exe1⤵
- Executes dropped EXE
PID:1004
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Roaming\svhost.exe
- Size 666KB
- SHA256 aa4cd5e9ff8ef8e4a72601c03154231631a5179167400a5478ca4282188b1163
- MD5 5b780f32105ff92593db7b30ea2ac9ed
- SHA1 6054922a051ce8d25d5d39565a9ad23575b7fe7f
- SHA512 c93d9eee0cd547d513d3920f6fa5d3e22adaf6e4e7285f196ba4001d512f9ac05452e0243c526c713a880981249dbbad31947b08edf22f5eb53c6c77fb69d13d
- SSDEEP 12288:ZYW1LNT35lDbK/LIVaN8+T7vwqyqhYMhWt918vulAWC9+m:dd35lDbKDIwWUDyqS5omDC9+
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\svhost.exe
- Size 666KB
- SHA256 aa4cd5e9ff8ef8e4a72601c03154231631a5179167400a5478ca4282188b1163
- MD5 5b780f32105ff92593db7b30ea2ac9ed
- SHA1 6054922a051ce8d25d5d39565a9ad23575b7fe7f
- SHA512 c93d9eee0cd547d513d3920f6fa5d3e22adaf6e4e7285f196ba4001d512f9ac05452e0243c526c713a880981249dbbad31947b08edf22f5eb53c6c77fb69d13d
- SSDEEP 12288:ZYW1LNT35lDbK/LIVaN8+T7vwqyqhYMhWt918vulAWC9+m:dd35lDbKDIwWUDyqS5omDC9+
- MD5 SHA1 SHA512 SSDEEP