Analysis
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max time kernel
400s -
max time network
365s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
15/01/2024, 19:09
Static task
static1
Behavioral task
behavioral1
Sample
ransomware.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
ransomware.exe
Resource
win10v2004-20231215-en
General
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Target
ransomware.exe
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Size
709KB
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MD5
d2243b032f9b9226d85de43b5b88480d
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SHA1
7643fc0978122e1862d855af3c2b066c715beacd
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SHA256
b5ebf4054d626e0602fd52c351ffba4c7c43f06d61c9e590c4f4bd77347094d7
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SHA512
c2561dbb57fe48a6591a70b3ab48de866013f8d03f5b18356a7304f546b0b852097ff6800f98ab319929089631d59eef00384f6619fb4a271c31b22b54f87b75
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SSDEEP
12288:f6aD7FoQiBMyk5EYvgPZfJGrFWCyYTI84EPSW+z7AuLQ59GnIZvmZHst9HhUUX:hPFoQiBMf5EYYDYFBCNEaWyLQ93v2Hkd
Malware Config
Extracted
djvu
http://zexeq.com/test2/get.php
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extension
.cdmx
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offline_id
mMsRxMUuXypapZbGOAfxD9pczHmW8zVRP7Pgjwt1
- payload_url
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ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-99MNqXMrdS Price of private key and decrypt software is $1999. Discount 50% available if you contact us first 72 hours, that's price for you is $999. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0841ASdw
Signatures
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Detected Djvu ransomware 14 IoCs
resource yara_rule behavioral1/memory/2052-2-0x00000000021D0000-0x00000000022EB000-memory.dmp family_djvu behavioral1/memory/2136-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2136-8-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2136-9-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2136-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2624-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2624-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2624-49-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2624-51-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2624-52-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2624-54-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2624-57-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2624-56-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2624-58-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Modifies file permissions 1 TTPs 1 IoCs
pid Process 2756 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\3e477050-408b-434d-bc33-51a172a72895\\ransomware.exe\" --AutoStart" ransomware.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 9 api.2ip.ua 3 api.2ip.ua 4 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2052 set thread context of 2136 2052 ransomware.exe 28 PID 2596 set thread context of 2624 2596 ransomware.exe 31 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 2136 ransomware.exe 2624 ransomware.exe 2624 ransomware.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2052 wrote to memory of 2136 2052 ransomware.exe 28 PID 2052 wrote to memory of 2136 2052 ransomware.exe 28 PID 2052 wrote to memory of 2136 2052 ransomware.exe 28 PID 2052 wrote to memory of 2136 2052 ransomware.exe 28 PID 2052 wrote to memory of 2136 2052 ransomware.exe 28 PID 2052 wrote to memory of 2136 2052 ransomware.exe 28 PID 2052 wrote to memory of 2136 2052 ransomware.exe 28 PID 2052 wrote to memory of 2136 2052 ransomware.exe 28 PID 2052 wrote to memory of 2136 2052 ransomware.exe 28 PID 2052 wrote to memory of 2136 2052 ransomware.exe 28 PID 2052 wrote to memory of 2136 2052 ransomware.exe 28 PID 2136 wrote to memory of 2756 2136 ransomware.exe 29 PID 2136 wrote to memory of 2756 2136 ransomware.exe 29 PID 2136 wrote to memory of 2756 2136 ransomware.exe 29 PID 2136 wrote to memory of 2756 2136 ransomware.exe 29 PID 2136 wrote to memory of 2596 2136 ransomware.exe 30 PID 2136 wrote to memory of 2596 2136 ransomware.exe 30 PID 2136 wrote to memory of 2596 2136 ransomware.exe 30 PID 2136 wrote to memory of 2596 2136 ransomware.exe 30 PID 2596 wrote to memory of 2624 2596 ransomware.exe 31 PID 2596 wrote to memory of 2624 2596 ransomware.exe 31 PID 2596 wrote to memory of 2624 2596 ransomware.exe 31 PID 2596 wrote to memory of 2624 2596 ransomware.exe 31 PID 2596 wrote to memory of 2624 2596 ransomware.exe 31 PID 2596 wrote to memory of 2624 2596 ransomware.exe 31 PID 2596 wrote to memory of 2624 2596 ransomware.exe 31 PID 2596 wrote to memory of 2624 2596 ransomware.exe 31 PID 2596 wrote to memory of 2624 2596 ransomware.exe 31 PID 2596 wrote to memory of 2624 2596 ransomware.exe 31 PID 2596 wrote to memory of 2624 2596 ransomware.exe 31
Processes
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C:\Users\Admin\AppData\Local\Temp\ransomware.exe"C:\Users\Admin\AppData\Local\Temp\ransomware.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2052 -
C:\Users\Admin\AppData\Local\Temp\ransomware.exe"C:\Users\Admin\AppData\Local\Temp\ransomware.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2136 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\3e477050-408b-434d-bc33-51a172a72895" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:2756
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C:\Users\Admin\AppData\Local\Temp\ransomware.exe"C:\Users\Admin\AppData\Local\Temp\ransomware.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2596 -
C:\Users\Admin\AppData\Local\Temp\ransomware.exe"C:\Users\Admin\AppData\Local\Temp\ransomware.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2624
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize1KB
MD510bc1463c2326403e6e2a83112554add
SHA1554df3e5bd0842d1d5be8331bf765b6f6ccd0afe
SHA256a2b62727608d9216237a6608a2e995c28d3656b72c06ee0b651878f26df7e8ff
SHA5126ba098756dec7fd32d25c208ced685781b78e125d0302af91ef2478793169f7a9d5a34219f5bdd83fcc16c64dbd2bf70e190ad482ddb9d878be32b10110f0d5c
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize724B
MD58202a1cd02e7d69597995cabbe881a12
SHA18858d9d934b7aa9330ee73de6c476acf19929ff6
SHA25658f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
SHA51297ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize410B
MD5b7893834c86539de3d522fd5553431d6
SHA1f3f88f5f7fded3240cc92b8167933e486e36cd31
SHA2562440a272a86e772f8f0d2fc777c59a748108e481e4e693dc43b8548e6626312c
SHA512e3f7d7684b2e6887afbe2598aa2bea2b13a2e2b0a71fdab034802e79b8fa8a02192690df008fae08fb5d0e1796e83123969f0ee42aa2b9b463cb9bce04251dda
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD5463c9cb85eb0c75fed7a1f75ab33f79f
SHA1f624d3890cea67b5374dced140001a688387a0ec
SHA256a4923caa0ee37d6f42beed2ea8f6236517f9de8b04236e063b5b26393033bf88
SHA512ad215ad2df5b2646eb34c3f888b3070be5e8b1eca4ebd88bcdb63b599e3adb9c0a5af24e0411275be26abddd588d7c77eef98af6a988d737ae219fa5183a7dc7
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5405efb4b43a4fbeae1f274e4693803a2
SHA1be0c61515c3f44dfaef80b7997049b276b0d36ab
SHA256d080da539c8b1e3fb09dc9f65ff4b9d347e60bc08b26de65adbc4782b398eec0
SHA51220896f035918526b4275dcfb0ec891883e10156cb079fd829d86d96ec11e5940cf876c70e418f23b5d7c54c224b13db30768a830cf5baa66c5397cf3e7c7be2a
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Filesize
709KB
MD5d2243b032f9b9226d85de43b5b88480d
SHA17643fc0978122e1862d855af3c2b066c715beacd
SHA256b5ebf4054d626e0602fd52c351ffba4c7c43f06d61c9e590c4f4bd77347094d7
SHA512c2561dbb57fe48a6591a70b3ab48de866013f8d03f5b18356a7304f546b0b852097ff6800f98ab319929089631d59eef00384f6619fb4a271c31b22b54f87b75
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Filesize
65KB
MD5ac05d27423a85adc1622c714f2cb6184
SHA1b0fe2b1abddb97837ea0195be70ab2ff14d43198
SHA256c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
SHA5126d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d