Analysis
-
max time kernel
150s -
max time network
49s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
26-12-2022 19:26
Behavioral task
behavioral1
Sample
64_MEcip3.exe
Resource
win7-20220901-en
windows7-x64
16 signatures
150 seconds
Behavioral task
behavioral2
Sample
64_MEcip3.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
13 signatures
150 seconds
General
-
Target
64_MEcip3.exe
-
Size
666KB
-
MD5
4660887b36d65e42b7d71d5e18187dfe
-
SHA1
49ad1eecb9bbb8d736833006685b8c2c1300115b
-
SHA256
05b51b5f41e483020d14126522a13c69b75e5cbb093a78980877bb60cf778873
-
SHA512
d0983ec2cb04d7b7fe0f1749ca903c34bb9b55a6a57f18d93feefbe7a358c6faddc42cc964e79315a250c940b22c067f2bcecd5d41aa334fe9b992ac632df6f8
-
SSDEEP
12288:ZYW1LNT35lDbK/LIVaN8+T7vwqyqhYMhWt918vulADC9+m:dd35lDbKDIwWUDyqS5omGC9+
Malware Config
Extracted
Path
C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-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:
27247F7BF37C901CD3BF931170B7652E1842AF844FB00502D12089C742D030487506CA0FF22258FF8CAF28581D60E609C2B0238D8931567A91E81190219D9181<br>31118A87A90103BD35CBE7A15D441C457981A608DDA4C3A4FAFF2D35876C32315B279D095DED6D77E78B5B3ECAA28F3A1EA3259944D969960917F7521960<br>1AB67F41027E22071524ED397A21FF27016FC76F5BC36641B3C38A5276409660E877D93FBAFCED2104175F7912AC9084DFE0B5DF425DBB4ABBDE9ABCE5E3<br>636593C76841BC8C03C8EA73C3525DDDE0DD451C03C88D03808364B4BB9ED67C53E2D5CF48C252C7F4BF6658DBC3E49A9B1232684CFBDCB5DF2AD2C3DB10<br>7E6458829E3890D9EDBDEE64D02F0467FFEEDFD3BFC197A0B51B49E7986D4D9A128C30E00D7264FEC78B63CE603B6B2872B4958DEFE5B8D2447CDCBE524A<br>A0ED3EE6273323ECDDEBA09948B534C7023C3E4EADFF00FF816CE1667ADFE1E0B02D92286E3973FEBC800AF05CBDD299F329CC9FF92679C8A2859F44E792<br>1D1D92C709494BBB2534D8452DF1E5E7BF0E078C589C179CD9D2C2676AA1C2F24872026BF80B9507E1B6737C9D89B5E47FF4033C8D6213E85F966EEDF3C2<br>F49B40BEAAC8A198E254DBE35E7FCC2CF789E4D32B1E0979BD7D14A3AC912BEC48BAE63B2DE9051C2D322FD79CC8EF5605E1AF1C5F41967709A2D2B19FEF<br>2C0DA183CBD20BE9FA97ED5EEA19
Emails
<h2>[email protected]</h2>
URLs
https://tox.chat/download.html</p>
Signatures
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MedusaLocker
Ransomware with several variants first seen in September 2019.
-
MedusaLocker payload 2 IoCs
Processes:
resource yara_rule behavioral1/files/0x000500000000b2d2-61.dat family_medusalocker behavioral1/files/0x000500000000b2d2-63.dat family_medusalocker -
Processes:
64_MEcip3.exedescription ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" 64_MEcip3.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 64_MEcip3.exe -
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
-
Executes dropped EXE 1 IoCs
Processes:
svhost.exepid Process 792 svhost.exe -
Modifies extensions of user files 5 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
64_MEcip3.exedescription ioc Process File renamed C:\Users\Admin\Pictures\OpenRead.raw => C:\Users\Admin\Pictures\OpenRead.raw.cipher3 64_MEcip3.exe File renamed C:\Users\Admin\Pictures\ResumeUninstall.png => C:\Users\Admin\Pictures\ResumeUninstall.png.cipher3 64_MEcip3.exe File renamed C:\Users\Admin\Pictures\UndoProtect.raw => C:\Users\Admin\Pictures\UndoProtect.raw.cipher3 64_MEcip3.exe File opened for modification C:\Users\Admin\Pictures\NewWrite.tiff 64_MEcip3.exe File renamed C:\Users\Admin\Pictures\NewWrite.tiff => C:\Users\Admin\Pictures\NewWrite.tiff.cipher3 64_MEcip3.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Processes:
64_MEcip3.exedescription ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 64_MEcip3.exe -
Drops desktop.ini file(s) 1 IoCs
Processes:
64_MEcip3.exedescription ioc Process File opened for modification \??\Z:\$RECYCLE.BIN\S-1-5-21-4063495947-34355257-727531523-1000\desktop.ini 64_MEcip3.exe -
Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
64_MEcip3.exedescription ioc Process File opened (read-only) \??\T: 64_MEcip3.exe File opened (read-only) \??\V: 64_MEcip3.exe File opened (read-only) \??\B: 64_MEcip3.exe File opened (read-only) \??\H: 64_MEcip3.exe File opened (read-only) \??\I: 64_MEcip3.exe File opened (read-only) \??\J: 64_MEcip3.exe File opened (read-only) \??\K: 64_MEcip3.exe File opened (read-only) \??\O: 64_MEcip3.exe File opened (read-only) \??\U: 64_MEcip3.exe File opened (read-only) \??\Z: 64_MEcip3.exe File opened (read-only) \??\E: 64_MEcip3.exe File opened (read-only) \??\L: 64_MEcip3.exe File opened (read-only) \??\M: 64_MEcip3.exe File opened (read-only) \??\N: 64_MEcip3.exe File opened (read-only) \??\P: 64_MEcip3.exe File opened (read-only) \??\Q: 64_MEcip3.exe File opened (read-only) \??\R: 64_MEcip3.exe File opened (read-only) \??\A: 64_MEcip3.exe File opened (read-only) \??\F: 64_MEcip3.exe File opened (read-only) \??\G: 64_MEcip3.exe File opened (read-only) \??\S: 64_MEcip3.exe File opened (read-only) \??\W: 64_MEcip3.exe File opened (read-only) \??\X: 64_MEcip3.exe File opened (read-only) \??\Y: 64_MEcip3.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Interacts with shadow copies 2 TTPs 3 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
Processes:
vssadmin.exevssadmin.exevssadmin.exepid Process 896 vssadmin.exe 788 vssadmin.exe 1644 vssadmin.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
64_MEcip3.exepid Process 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe 1600 64_MEcip3.exe -
Suspicious use of AdjustPrivilegeToken 63 IoCs
Processes:
vssvc.exewmic.exewmic.exewmic.exedescription pid Process Token: SeBackupPrivilege 1656 vssvc.exe Token: SeRestorePrivilege 1656 vssvc.exe Token: SeAuditPrivilege 1656 vssvc.exe Token: SeIncreaseQuotaPrivilege 1780 wmic.exe Token: SeSecurityPrivilege 1780 wmic.exe Token: SeTakeOwnershipPrivilege 1780 wmic.exe Token: SeLoadDriverPrivilege 1780 wmic.exe Token: SeSystemProfilePrivilege 1780 wmic.exe Token: SeSystemtimePrivilege 1780 wmic.exe Token: SeProfSingleProcessPrivilege 1780 wmic.exe Token: SeIncBasePriorityPrivilege 1780 wmic.exe Token: SeCreatePagefilePrivilege 1780 wmic.exe Token: SeBackupPrivilege 1780 wmic.exe Token: SeRestorePrivilege 1780 wmic.exe Token: SeShutdownPrivilege 1780 wmic.exe Token: SeDebugPrivilege 1780 wmic.exe Token: SeSystemEnvironmentPrivilege 1780 wmic.exe Token: SeRemoteShutdownPrivilege 1780 wmic.exe Token: SeUndockPrivilege 1780 wmic.exe Token: SeManageVolumePrivilege 1780 wmic.exe Token: 33 1780 wmic.exe Token: 34 1780 wmic.exe Token: 35 1780 wmic.exe Token: SeIncreaseQuotaPrivilege 1508 wmic.exe Token: SeSecurityPrivilege 1508 wmic.exe Token: SeTakeOwnershipPrivilege 1508 wmic.exe Token: SeLoadDriverPrivilege 1508 wmic.exe Token: SeSystemProfilePrivilege 1508 wmic.exe Token: SeSystemtimePrivilege 1508 wmic.exe Token: SeProfSingleProcessPrivilege 1508 wmic.exe Token: SeIncBasePriorityPrivilege 1508 wmic.exe Token: SeCreatePagefilePrivilege 1508 wmic.exe Token: SeBackupPrivilege 1508 wmic.exe Token: SeRestorePrivilege 1508 wmic.exe Token: SeShutdownPrivilege 1508 wmic.exe Token: SeDebugPrivilege 1508 wmic.exe Token: SeSystemEnvironmentPrivilege 1508 wmic.exe Token: SeRemoteShutdownPrivilege 1508 wmic.exe Token: SeUndockPrivilege 1508 wmic.exe Token: SeManageVolumePrivilege 1508 wmic.exe Token: 33 1508 wmic.exe Token: 34 1508 wmic.exe Token: 35 1508 wmic.exe Token: SeIncreaseQuotaPrivilege 1444 wmic.exe Token: SeSecurityPrivilege 1444 wmic.exe Token: SeTakeOwnershipPrivilege 1444 wmic.exe Token: SeLoadDriverPrivilege 1444 wmic.exe Token: SeSystemProfilePrivilege 1444 wmic.exe Token: SeSystemtimePrivilege 1444 wmic.exe Token: SeProfSingleProcessPrivilege 1444 wmic.exe Token: SeIncBasePriorityPrivilege 1444 wmic.exe Token: SeCreatePagefilePrivilege 1444 wmic.exe Token: SeBackupPrivilege 1444 wmic.exe Token: SeRestorePrivilege 1444 wmic.exe Token: SeShutdownPrivilege 1444 wmic.exe Token: SeDebugPrivilege 1444 wmic.exe Token: SeSystemEnvironmentPrivilege 1444 wmic.exe Token: SeRemoteShutdownPrivilege 1444 wmic.exe Token: SeUndockPrivilege 1444 wmic.exe Token: SeManageVolumePrivilege 1444 wmic.exe Token: 33 1444 wmic.exe Token: 34 1444 wmic.exe Token: 35 1444 wmic.exe -
Suspicious use of WriteProcessMemory 28 IoCs
Processes:
64_MEcip3.exetaskeng.exedescription pid Process procid_target PID 1600 wrote to memory of 896 1600 64_MEcip3.exe 27 PID 1600 wrote to memory of 896 1600 64_MEcip3.exe 27 PID 1600 wrote to memory of 896 1600 64_MEcip3.exe 27 PID 1600 wrote to memory of 896 1600 64_MEcip3.exe 27 PID 1600 wrote to memory of 1780 1600 64_MEcip3.exe 30 PID 1600 wrote to memory of 1780 1600 64_MEcip3.exe 30 PID 1600 wrote to memory of 1780 1600 64_MEcip3.exe 30 PID 1600 wrote to memory of 1780 1600 64_MEcip3.exe 30 PID 1600 wrote to memory of 788 1600 64_MEcip3.exe 32 PID 1600 wrote to memory of 788 1600 64_MEcip3.exe 32 PID 1600 wrote to memory of 788 1600 64_MEcip3.exe 32 PID 1600 wrote to memory of 788 1600 64_MEcip3.exe 32 PID 1600 wrote to memory of 1508 1600 64_MEcip3.exe 34 PID 1600 wrote to memory of 1508 1600 64_MEcip3.exe 34 PID 1600 wrote to memory of 1508 1600 64_MEcip3.exe 34 PID 1600 wrote to memory of 1508 1600 64_MEcip3.exe 34 PID 1600 wrote to memory of 1644 1600 64_MEcip3.exe 36 PID 1600 wrote to memory of 1644 1600 64_MEcip3.exe 36 PID 1600 wrote to memory of 1644 1600 64_MEcip3.exe 36 PID 1600 wrote to memory of 1644 1600 64_MEcip3.exe 36 PID 1600 wrote to memory of 1444 1600 64_MEcip3.exe 38 PID 1600 wrote to memory of 1444 1600 64_MEcip3.exe 38 PID 1600 wrote to memory of 1444 1600 64_MEcip3.exe 38 PID 1600 wrote to memory of 1444 1600 64_MEcip3.exe 38 PID 832 wrote to memory of 792 832 taskeng.exe 42 PID 832 wrote to memory of 792 832 taskeng.exe 42 PID 832 wrote to memory of 792 832 taskeng.exe 42 PID 832 wrote to memory of 792 832 taskeng.exe 42 -
System policy modification 1 TTPs 3 IoCs
Processes:
64_MEcip3.exedescription ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 64_MEcip3.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" 64_MEcip3.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1" 64_MEcip3.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\64_MEcip3.exe"C:\Users\Admin\AppData\Local\Temp\64_MEcip3.exe"1⤵
- UAC bypass
- Modifies extensions of user files
- Checks whether UAC is enabled
- Drops desktop.ini file(s)
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1600 -
C:\Windows\SysWOW64\vssadmin.exevssadmin.exe Delete Shadows /All /Quiet2⤵
- Interacts with shadow copies
PID:896
-
-
C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1780
-
-
C:\Windows\SysWOW64\vssadmin.exevssadmin.exe Delete Shadows /All /Quiet2⤵
- Interacts with shadow copies
PID:788
-
-
C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1508
-
-
C:\Windows\SysWOW64\vssadmin.exevssadmin.exe Delete Shadows /All /Quiet2⤵
- Interacts with shadow copies
PID:1644
-
-
C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1444
-
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1656
-
C:\Windows\system32\taskeng.exetaskeng.exe {038C6554-3514-4D9A-BE2A-12EFEEE463DC} S-1-5-21-4063495947-34355257-727531523-1000:RYNKSFQE\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:832 -
C:\Users\Admin\AppData\Roaming\svhost.exeC:\Users\Admin\AppData\Roaming\svhost.exe2⤵
- Executes dropped EXE
PID:792
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
-
Filesize
666KB
MD54660887b36d65e42b7d71d5e18187dfe
SHA149ad1eecb9bbb8d736833006685b8c2c1300115b
SHA25605b51b5f41e483020d14126522a13c69b75e5cbb093a78980877bb60cf778873
SHA512d0983ec2cb04d7b7fe0f1749ca903c34bb9b55a6a57f18d93feefbe7a358c6faddc42cc964e79315a250c940b22c067f2bcecd5d41aa334fe9b992ac632df6f8
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Filesize
666KB
MD54660887b36d65e42b7d71d5e18187dfe
SHA149ad1eecb9bbb8d736833006685b8c2c1300115b
SHA25605b51b5f41e483020d14126522a13c69b75e5cbb093a78980877bb60cf778873
SHA512d0983ec2cb04d7b7fe0f1749ca903c34bb9b55a6a57f18d93feefbe7a358c6faddc42cc964e79315a250c940b22c067f2bcecd5d41aa334fe9b992ac632df6f8