Analysis
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max time kernel
333s -
max time network
306s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-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 17 IoCs
resource yara_rule behavioral2/memory/3184-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3184-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3184-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3184-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2200-2-0x0000000002760000-0x000000000287B000-memory.dmp family_djvu behavioral2/memory/3184-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4524-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4524-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4524-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4524-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4524-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4524-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4524-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4524-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4524-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4524-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4524-40-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation ransomware.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 4832 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\2f96228e-5adf-4b15-aed3-6b676f8a5996\\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 3 api.2ip.ua 5 api.2ip.ua 21 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2200 set thread context of 3184 2200 ransomware.exe 88 PID 1796 set thread context of 4524 1796 ransomware.exe 92 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 3184 ransomware.exe 3184 ransomware.exe 4524 ransomware.exe 4524 ransomware.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 2200 wrote to memory of 3184 2200 ransomware.exe 88 PID 2200 wrote to memory of 3184 2200 ransomware.exe 88 PID 2200 wrote to memory of 3184 2200 ransomware.exe 88 PID 2200 wrote to memory of 3184 2200 ransomware.exe 88 PID 2200 wrote to memory of 3184 2200 ransomware.exe 88 PID 2200 wrote to memory of 3184 2200 ransomware.exe 88 PID 2200 wrote to memory of 3184 2200 ransomware.exe 88 PID 2200 wrote to memory of 3184 2200 ransomware.exe 88 PID 2200 wrote to memory of 3184 2200 ransomware.exe 88 PID 2200 wrote to memory of 3184 2200 ransomware.exe 88 PID 3184 wrote to memory of 4832 3184 ransomware.exe 89 PID 3184 wrote to memory of 4832 3184 ransomware.exe 89 PID 3184 wrote to memory of 4832 3184 ransomware.exe 89 PID 3184 wrote to memory of 1796 3184 ransomware.exe 90 PID 3184 wrote to memory of 1796 3184 ransomware.exe 90 PID 3184 wrote to memory of 1796 3184 ransomware.exe 90 PID 1796 wrote to memory of 4524 1796 ransomware.exe 92 PID 1796 wrote to memory of 4524 1796 ransomware.exe 92 PID 1796 wrote to memory of 4524 1796 ransomware.exe 92 PID 1796 wrote to memory of 4524 1796 ransomware.exe 92 PID 1796 wrote to memory of 4524 1796 ransomware.exe 92 PID 1796 wrote to memory of 4524 1796 ransomware.exe 92 PID 1796 wrote to memory of 4524 1796 ransomware.exe 92 PID 1796 wrote to memory of 4524 1796 ransomware.exe 92 PID 1796 wrote to memory of 4524 1796 ransomware.exe 92 PID 1796 wrote to memory of 4524 1796 ransomware.exe 92
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:2200 -
C:\Users\Admin\AppData\Local\Temp\ransomware.exe"C:\Users\Admin\AppData\Local\Temp\ransomware.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3184 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\2f96228e-5adf-4b15-aed3-6b676f8a5996" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:4832
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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:1796 -
C:\Users\Admin\AppData\Local\Temp\ransomware.exe"C:\Users\Admin\AppData\Local\Temp\ransomware.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4524
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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
MD5958469b57d79bb365d3f1b45fb5206a1
SHA16504dd4c96f11d5d100bf81a6a7a6aef85da58e1
SHA256cc9542c4faae35ff2ade258cdcaa28c197ae8b31a65ebef50b70d9fa65ec5a2c
SHA5127e7be8e7ebf2137829246963ae82c3259cddec6699a11e57c8948acb1b7070cd552ab67755afee8ddc8acda08f7e7b0f7aa9062f08ddd4293b79a08a432ff550
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD51c3798465ec75a835bc14a3d54c0d9ec
SHA1930e6f5977a018ec83fa16706f4e425af4974688
SHA256218022e77fe10a91bae6fb7aa8a85c5ab1a3d9690d2e16b6dd0fe7810bcf3eae
SHA51271cadc4bae416db9077dfcd476e2201d18d0d6eab8698e35406eeda7f9b183ad7451b18a71e3bdf8d791ca0b12a3dd906b677f7129d12e213627af1ada029209
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Filesize
709KB
MD5d2243b032f9b9226d85de43b5b88480d
SHA17643fc0978122e1862d855af3c2b066c715beacd
SHA256b5ebf4054d626e0602fd52c351ffba4c7c43f06d61c9e590c4f4bd77347094d7
SHA512c2561dbb57fe48a6591a70b3ab48de866013f8d03f5b18356a7304f546b0b852097ff6800f98ab319929089631d59eef00384f6619fb4a271c31b22b54f87b75