Analysis
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max time kernel
143s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
22-05-2024 02:35
Static task
static1
Behavioral task
behavioral1
Sample
884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
Resource
win10v2004-20240508-en
General
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Target
884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
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Size
728KB
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MD5
4b82d5ef17c6f3905db22541c87894b3
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SHA1
4574488beb1c852d724535b8868ea0211fe9a7e8
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SHA256
884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c
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SHA512
4e0ad8fce5e492bfbb9641b27a91925e1446146045425863f4c6ff6b6281f902dcdcd3471d11ffed026a8f661c2c7c7ebd75b92a3d691c930b42437ff6d06ebb
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SSDEEP
12288:4pJPsIWiujU52CnpB8gj9E40NXBP9/1gOoiyQ1PcL81f3oMw+q0:WOiuj/2X8gJE4yRPjodQyL8h3y+q0
Malware Config
Extracted
djvu
http://cajgtus.com/test1/get.php
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extension
.vepi
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offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
-
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 14 IoCs
Processes:
resource yara_rule behavioral1/memory/1728-6-0x00000000006B0000-0x00000000007CB000-memory.dmp family_djvu behavioral1/memory/2216-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2216-7-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2216-8-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2216-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2516-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2516-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2516-50-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2516-51-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2516-52-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2516-57-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2516-58-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2516-55-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2516-59-0x0000000000400000-0x0000000000537000-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:
884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\808f39dc-8d54-4b6e-9393-4755bf5e8447\\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe\" --AutoStart" 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.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 3 api.2ip.ua 4 api.2ip.ua 9 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exedescription pid process target process PID 1728 set thread context of 2216 1728 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 2500 set thread context of 2516 2500 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exepid process 2216 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 2516 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 2516 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exedescription pid process target process PID 1728 wrote to memory of 2216 1728 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 1728 wrote to memory of 2216 1728 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 1728 wrote to memory of 2216 1728 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 1728 wrote to memory of 2216 1728 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 1728 wrote to memory of 2216 1728 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 1728 wrote to memory of 2216 1728 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 1728 wrote to memory of 2216 1728 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 1728 wrote to memory of 2216 1728 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 1728 wrote to memory of 2216 1728 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 1728 wrote to memory of 2216 1728 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 1728 wrote to memory of 2216 1728 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 2216 wrote to memory of 2616 2216 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe icacls.exe PID 2216 wrote to memory of 2616 2216 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe icacls.exe PID 2216 wrote to memory of 2616 2216 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe icacls.exe PID 2216 wrote to memory of 2616 2216 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe icacls.exe PID 2216 wrote to memory of 2500 2216 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 2216 wrote to memory of 2500 2216 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 2216 wrote to memory of 2500 2216 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 2216 wrote to memory of 2500 2216 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 2500 wrote to memory of 2516 2500 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 2500 wrote to memory of 2516 2500 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 2500 wrote to memory of 2516 2500 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 2500 wrote to memory of 2516 2500 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 2500 wrote to memory of 2516 2500 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 2500 wrote to memory of 2516 2500 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 2500 wrote to memory of 2516 2500 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 2500 wrote to memory of 2516 2500 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 2500 wrote to memory of 2516 2500 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 2500 wrote to memory of 2516 2500 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe PID 2500 wrote to memory of 2516 2500 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe"C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe"C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe"2⤵
- 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\808f39dc-8d54-4b6e-9393-4755bf5e8447" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe"C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe"C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.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
MD5cb35bd9d6c5a4fd50a9263018bbd9784
SHA1efec24f93d2af7bd01969c36870ebc928fa6c790
SHA256be648ee93df285417e494e28c01e3ab8f3d043845f4d3b397dfd137d187ed612
SHA512ac26182fb167458da4b465b118720470859e8028db8d3d71ddbe0c5be0e46b9178c5f7ccb8b1252c38754e27da1af546f8d2f6e32e1bfcbeac0d510aa831bf11
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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
MD511e2d75e1b43da817a7bcd923557ba3e
SHA1e8b49548856c2502162cdfbb2d1ca4a95b39195e
SHA256a41239bada9417032cfd258a4e08a1d757619431b08d19ee47305dc605581a44
SHA5123efcb07681cae7ea723c46f492585da1f6bf28a6cb7350ddedb8e93b98002c11923ba06a58001afa2d5fc790698579473feed9e4d75b5c8f3959af2c4b8c22cc
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015Filesize
344B
MD5761f02051d1293eb80763018ccd1c09c
SHA1e7151839e18e1796f637d44a677af00a4c135775
SHA2560bab6a112acc2eed972bd50d190b79309da14d1fba4f9734d6d00eaca2c7fbed
SHA512caeb91789211a478dfc31c7f92d0ef30710e577a0a755fffe1d03800a2305aa274b90f6bf77c7a3fb2f863fbdb5283561047b213f87280757d12fe79ac4ffeec
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464Filesize
392B
MD515cb03b6984b65202ef67aebaf94a3d9
SHA14a1cfa05f1b82564802ca5afd9b8f13950ef78c5
SHA256b15e725c1e4302bc16b290e728031dcefcb580be539ae351331004746c89e757
SHA512232c6972ef010742d30cab0c5f44256444261aede2979b2f3cc576756bb82b803f08ef95e5754fd4d12b0df9ed79ea5739375ccb29b3b23b7f608ec6cdb1eb3b
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C:\Users\Admin\AppData\Local\808f39dc-8d54-4b6e-9393-4755bf5e8447\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exeFilesize
728KB
MD54b82d5ef17c6f3905db22541c87894b3
SHA14574488beb1c852d724535b8868ea0211fe9a7e8
SHA256884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c
SHA5124e0ad8fce5e492bfbb9641b27a91925e1446146045425863f4c6ff6b6281f902dcdcd3471d11ffed026a8f661c2c7c7ebd75b92a3d691c930b42437ff6d06ebb
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C:\Users\Admin\AppData\Local\Temp\Cab1DBE.tmpFilesize
65KB
MD5ac05d27423a85adc1622c714f2cb6184
SHA1b0fe2b1abddb97837ea0195be70ab2ff14d43198
SHA256c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
SHA5126d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d
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memory/1728-6-0x00000000006B0000-0x00000000007CB000-memory.dmpFilesize
1.1MB
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memory/1728-5-0x00000000002E0000-0x0000000000371000-memory.dmpFilesize
580KB
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memory/1728-0-0x00000000002E0000-0x0000000000371000-memory.dmpFilesize
580KB
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memory/2216-8-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2216-28-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2216-1-0x000000007EFDE000-0x000000007EFDF000-memory.dmpFilesize
4KB
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memory/2216-3-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2216-7-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2500-29-0x0000000000500000-0x0000000000591000-memory.dmpFilesize
580KB
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memory/2500-30-0x0000000000400000-0x00000000004FF000-memory.dmpFilesize
1020KB
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memory/2500-35-0x0000000000400000-0x00000000004FF000-memory.dmpFilesize
1020KB
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memory/2516-37-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2516-36-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2516-50-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2516-51-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2516-52-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2516-57-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2516-58-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2516-55-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2516-59-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB