Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
24-05-2024 19:45
Static task
static1
Behavioral task
behavioral1
Sample
22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
Resource
win10v2004-20240426-en
General
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Target
22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
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Size
716KB
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MD5
2b6b52df150d245e425f056626740029
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SHA1
9770b7035564b9e740f7e947e970d5a7beb0717c
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SHA256
22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299
-
SHA512
1a5035fccdcee9f795794648012840b71519fce5fec83c9303d5b08fd128a444bb646c509a652085ad7b24c343a24b8db68d5868e0f70103b0e55bd2acb5999e
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SSDEEP
12288:KHkMkHn1sDdDRu5cTgmWYNFhk+SLJnKsRKkNIO0Ydg:KHkHn1sDdNk6gnYXuJnq9
Malware Config
Extracted
djvu
http://cajgtus.com/test2/get.php
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extension
.vehu
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offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
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payload_url
http://sdfjhuz.com/dl/build2.exe
http://cajgtus.com/files/1/build3.exe
-
ransomnote
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Signatures
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Detected Djvu ransomware 15 IoCs
Processes:
resource yara_rule behavioral2/memory/3844-2-0x0000000004A10000-0x0000000004B2B000-memory.dmp family_djvu behavioral2/memory/1084-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1084-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1084-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1084-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1084-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2172-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2172-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2172-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2172-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2172-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2172-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2172-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2172-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2172-37-0x0000000000400000-0x0000000000537000-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.
Processes:
22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\dec672e1-a162-47b6-9efc-8aa5649895af\\22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe\" --AutoStart" 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.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.
Processes:
flow ioc 5 api.2ip.ua 25 api.2ip.ua 4 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exedescription pid process target process PID 3844 set thread context of 1084 3844 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 2912 set thread context of 2172 2912 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exepid process 1084 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 1084 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 2172 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 2172 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exedescription pid process target process PID 3844 wrote to memory of 1084 3844 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 3844 wrote to memory of 1084 3844 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 3844 wrote to memory of 1084 3844 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 3844 wrote to memory of 1084 3844 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 3844 wrote to memory of 1084 3844 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 3844 wrote to memory of 1084 3844 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 3844 wrote to memory of 1084 3844 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 3844 wrote to memory of 1084 3844 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 3844 wrote to memory of 1084 3844 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 3844 wrote to memory of 1084 3844 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 1084 wrote to memory of 2468 1084 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe icacls.exe PID 1084 wrote to memory of 2468 1084 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe icacls.exe PID 1084 wrote to memory of 2468 1084 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe icacls.exe PID 1084 wrote to memory of 2912 1084 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 1084 wrote to memory of 2912 1084 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 1084 wrote to memory of 2912 1084 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 2912 wrote to memory of 2172 2912 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 2912 wrote to memory of 2172 2912 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 2912 wrote to memory of 2172 2912 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 2912 wrote to memory of 2172 2912 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 2912 wrote to memory of 2172 2912 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 2912 wrote to memory of 2172 2912 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 2912 wrote to memory of 2172 2912 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 2912 wrote to memory of 2172 2912 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 2912 wrote to memory of 2172 2912 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe PID 2912 wrote to memory of 2172 2912 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe"C:\Users\Admin\AppData\Local\Temp\22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe"C:\Users\Admin\AppData\Local\Temp\22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\dec672e1-a162-47b6-9efc-8aa5649895af" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe"C:\Users\Admin\AppData\Local\Temp\22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe"C:\Users\Admin\AppData\Local\Temp\22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EAFilesize
1KB
MD57bb5a14437331aad24915a3d8546fbc1
SHA19a5570c07af0c0cde02858f61e1c7094f5a70f38
SHA25642397d9f3c8164d4cef19fc169d7bcea77a3ea7e9bcb8cfa7db2ff0bbd3a7e00
SHA512a2333a078be981eafe3f666ff3944cd3b28279a9da99f354014d81d80e98a0effabff2a8f5ab5fba61f7de9e49e2af3112dda6b28678192a1d80d2ca22004f13
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464Filesize
724B
MD58202a1cd02e7d69597995cabbe881a12
SHA18858d9d934b7aa9330ee73de6c476acf19929ff6
SHA25658f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
SHA51297ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EAFilesize
410B
MD5ee69b5eefceb02ff9e45268f26ab9640
SHA17a68b0fbc103e1ba958e068b56b2316cd7038f67
SHA256bba43641986d15c164a65af8936cc3bb47051786c20390e14de975ed5cde1c37
SHA512a7a7c25f14e7baedd603ad52fd17bc5c64288ae077af62baf5c98026185ba5d2198872a79f62de8b446bd9776239c1a162f924ca6e0fd85d7e5ce39ddf7c4357
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464Filesize
392B
MD56f576b911cd94cdc072432b0217200d4
SHA1264b3b429bdb4c2c9b335713d3dcb62fa1cee2ca
SHA2564459946538aba92af8ce821598f8a06be8f22807e2fb068c4e7c8bd1e3689455
SHA5123e418c0634adce26fdfb517bedb2d5e5199be2d56c12a89d63116402b6e62b3d07d5148a0fa3d9198ca55357f347efe40adde3e88ab2e337c17b2bc7a3571e32
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C:\Users\Admin\AppData\Local\dec672e1-a162-47b6-9efc-8aa5649895af\22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exeFilesize
716KB
MD52b6b52df150d245e425f056626740029
SHA19770b7035564b9e740f7e947e970d5a7beb0717c
SHA25622c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299
SHA5121a5035fccdcee9f795794648012840b71519fce5fec83c9303d5b08fd128a444bb646c509a652085ad7b24c343a24b8db68d5868e0f70103b0e55bd2acb5999e
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memory/1084-6-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
-
memory/1084-4-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1084-19-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
-
memory/1084-3-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
-
memory/1084-5-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2172-29-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2172-22-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2172-28-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2172-27-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2172-32-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2172-34-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2172-35-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2172-36-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2172-37-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/3844-2-0x0000000004A10000-0x0000000004B2B000-memory.dmpFilesize
1.1MB
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memory/3844-1-0x0000000004970000-0x0000000004A0B000-memory.dmpFilesize
620KB