Analysis
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max time kernel
141s -
max time network
124s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
22-05-2024 05:01
Static task
static1
Behavioral task
behavioral1
Sample
ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe
Resource
win11-20240508-en
General
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Target
ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe
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Size
710KB
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MD5
967be9af9f69700577c315c55b878f49
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SHA1
67a95ed7f485a44aee16acc3ed99e817e8b9be66
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SHA256
ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea
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SHA512
4ce1f72258d3072237588601666514ad5774a8bc11ff8b774f2a6e38b6bb23a71efd39ab7d700c498bf583eba15d238b415e17c62bb579de75aaef39eef183dd
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SSDEEP
12288:aOU+1CSxBvchOx4PEKJ3bId2K2IkepPQS00X+BuW+5a8eqc43LRJXsvWk:aORCS/aVEmrIdV2IkG90RBR+7eqnRJo/
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
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ransomnote
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Signatures
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Detected Djvu ransomware 15 IoCs
Processes:
resource yara_rule behavioral1/memory/5052-2-0x0000000004A20000-0x0000000004B3B000-memory.dmp family_djvu behavioral1/memory/3124-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3124-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3124-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3124-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3124-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2160-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2160-25-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2160-26-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2160-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2160-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2160-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2160-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2160-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2160-35-0x0000000000400000-0x0000000000537000-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:
ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\cd069696-693e-4b3d-802a-5d4530a07ce2\\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe\" --AutoStart" ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.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 7 api.2ip.ua 8 api.2ip.ua 20 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exeddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exedescription pid process target process PID 5052 set thread context of 3124 5052 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 880 set thread context of 2160 880 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.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:
ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exeddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exepid process 3124 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe 3124 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe 2160 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe 2160 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exeddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exeddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exedescription pid process target process PID 5052 wrote to memory of 3124 5052 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 5052 wrote to memory of 3124 5052 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 5052 wrote to memory of 3124 5052 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 5052 wrote to memory of 3124 5052 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 5052 wrote to memory of 3124 5052 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 5052 wrote to memory of 3124 5052 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 5052 wrote to memory of 3124 5052 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 5052 wrote to memory of 3124 5052 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 5052 wrote to memory of 3124 5052 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 5052 wrote to memory of 3124 5052 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 3124 wrote to memory of 2744 3124 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe icacls.exe PID 3124 wrote to memory of 2744 3124 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe icacls.exe PID 3124 wrote to memory of 2744 3124 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe icacls.exe PID 3124 wrote to memory of 880 3124 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 3124 wrote to memory of 880 3124 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 3124 wrote to memory of 880 3124 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 880 wrote to memory of 2160 880 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 880 wrote to memory of 2160 880 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 880 wrote to memory of 2160 880 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 880 wrote to memory of 2160 880 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 880 wrote to memory of 2160 880 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 880 wrote to memory of 2160 880 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 880 wrote to memory of 2160 880 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 880 wrote to memory of 2160 880 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 880 wrote to memory of 2160 880 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 880 wrote to memory of 2160 880 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe"C:\Users\Admin\AppData\Local\Temp\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5052 -
C:\Users\Admin\AppData\Local\Temp\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe"C:\Users\Admin\AppData\Local\Temp\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3124 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\cd069696-693e-4b3d-802a-5d4530a07ce2" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:2744 -
C:\Users\Admin\AppData\Local\Temp\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe"C:\Users\Admin\AppData\Local\Temp\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:880 -
C:\Users\Admin\AppData\Local\Temp\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe"C:\Users\Admin\AppData\Local\Temp\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2160
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
MD5cb35bd9d6c5a4fd50a9263018bbd9784
SHA1efec24f93d2af7bd01969c36870ebc928fa6c790
SHA256be648ee93df285417e494e28c01e3ab8f3d043845f4d3b397dfd137d187ed612
SHA512ac26182fb167458da4b465b118720470859e8028db8d3d71ddbe0c5be0e46b9178c5f7ccb8b1252c38754e27da1af546f8d2f6e32e1bfcbeac0d510aa831bf11
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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
MD58bac3167e164942e74503d57a12b6d3e
SHA1420229ffb5707fcff1f89d5bacaf1b64f504dad3
SHA2566637b6fc25a8f3a5162635f1d3d1c7dde3764f89454a1a37376a080e9a2d7ebf
SHA51244261e1ea06e3102c7e87804ee25d146529fdf63b6803e5365e1294ddcae197b3d6cdf0b6faa69120adba133be5136bdae10e34bc61c4f953881abadcde6348f
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD51d28c8fac4be2023e8b03739d5b76aa9
SHA1c799e111fd442c5a6dc8f03d7913ac72e04ec181
SHA25668518de82c1a74cc471b5e9e2714eb991d28cf56f2f65474dddf6ae60e1173bf
SHA51291578a8ae75493d47945e5a67bdd38e83bf9676e4e1dc325706171a625da2ee3c3594b6667bde98321bdb66cc9868d0418c1f68e3524145144ac3b1472ead16f
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C:\Users\Admin\AppData\Local\cd069696-693e-4b3d-802a-5d4530a07ce2\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe
Filesize710KB
MD5967be9af9f69700577c315c55b878f49
SHA167a95ed7f485a44aee16acc3ed99e817e8b9be66
SHA256ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea
SHA5124ce1f72258d3072237588601666514ad5774a8bc11ff8b774f2a6e38b6bb23a71efd39ab7d700c498bf583eba15d238b415e17c62bb579de75aaef39eef183dd