Analysis
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max time kernel
143s -
max time network
124s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-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 behavioral2/memory/2988-2-0x0000000004BE0000-0x0000000004CFB000-memory.dmp family_djvu behavioral2/memory/2984-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2984-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2984-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2984-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2984-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1180-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1180-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1180-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1180-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1180-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1180-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1180-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1180-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1180-37-0x0000000000400000-0x0000000000537000-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
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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-1-5-21-3107365284-1576850094-161165143-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f52ddfc3-99cd-4a49-ad72-d58b0bce7c4e\\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 1 api.2ip.ua 2 api.2ip.ua 6 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exeddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exedescription pid process target process PID 2988 set thread context of 2984 2988 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2104 set thread context of 1180 2104 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 2984 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe 2984 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe 1180 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe 1180 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exeddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exeddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exedescription pid process target process PID 2988 wrote to memory of 2984 2988 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2988 wrote to memory of 2984 2988 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2988 wrote to memory of 2984 2988 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2988 wrote to memory of 2984 2988 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2988 wrote to memory of 2984 2988 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2988 wrote to memory of 2984 2988 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2988 wrote to memory of 2984 2988 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2988 wrote to memory of 2984 2988 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2988 wrote to memory of 2984 2988 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2988 wrote to memory of 2984 2988 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2984 wrote to memory of 4848 2984 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe icacls.exe PID 2984 wrote to memory of 4848 2984 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe icacls.exe PID 2984 wrote to memory of 4848 2984 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe icacls.exe PID 2984 wrote to memory of 2104 2984 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2984 wrote to memory of 2104 2984 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2984 wrote to memory of 2104 2984 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2104 wrote to memory of 1180 2104 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2104 wrote to memory of 1180 2104 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2104 wrote to memory of 1180 2104 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2104 wrote to memory of 1180 2104 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2104 wrote to memory of 1180 2104 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2104 wrote to memory of 1180 2104 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2104 wrote to memory of 1180 2104 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2104 wrote to memory of 1180 2104 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2104 wrote to memory of 1180 2104 ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe PID 2104 wrote to memory of 1180 2104 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:2988 -
C:\Users\Admin\AppData\Local\Temp\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe"C:\Users\Admin\AppData\Local\Temp\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2984 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\f52ddfc3-99cd-4a49-ad72-d58b0bce7c4e" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:4848 -
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:2104 -
C:\Users\Admin\AppData\Local\Temp\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe"C:\Users\Admin\AppData\Local\Temp\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1180
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
MD5f3a585ec62bd97f4098a7498a9e1291d
SHA1d083569ea5d376ecff31f2518cb3a0f8a5c2c3b2
SHA2560caa95ed957e76584e72ac689ec9b12bbf27acad7ce80035975b75fcbacbe22d
SHA512d2d23c0101041459e31403568a35fd75db3eded561f158088be2c15416feb3595ee4f7e2bbbdb8b7375e318ffe714a34dcc8e768db40e265b8c60da20553ac41
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5a3862dfca80cfda4dacd1480e2cc3f8f
SHA1b7c457f0e8d5b1c6acbb54bc6c470b061d2ae3d9
SHA25691b4d9577668b332f69d33b68f2fc12ebddea4f5b8a48c565ca3b1fd30339048
SHA512ea8d631e690e6ff2bc92cd77a43d4c8e92e16803fcef174bf19816895122d6a3d1541661648e67fd3573b9256d2c98c75efe31275a9854b29185b9c2c14cc8db
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C:\Users\Admin\AppData\Local\f52ddfc3-99cd-4a49-ad72-d58b0bce7c4e\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe
Filesize710KB
MD5967be9af9f69700577c315c55b878f49
SHA167a95ed7f485a44aee16acc3ed99e817e8b9be66
SHA256ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea
SHA5124ce1f72258d3072237588601666514ad5774a8bc11ff8b774f2a6e38b6bb23a71efd39ab7d700c498bf583eba15d238b415e17c62bb579de75aaef39eef183dd