Analysis
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max time kernel
292s -
max time network
242s -
platform
windows7_x64 -
resource
win7-20240729-en -
resource tags
arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system -
submitted
08-08-2024 22:34
Static task
static1
Behavioral task
behavioral1
Sample
3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe
Resource
win10-20240611-en
General
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Target
3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe
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Size
729KB
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MD5
d7528cd33b73718b5949277420681f90
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SHA1
61d97f8da20ff2995890ce5f2c8a2c9e6e51c078
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SHA256
3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1
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SHA512
b3dab709e19a2a8bad92b259ea1739ad55564f6fe31e9f4e502b6280ae6c70cdf5a0f1fda208887da4bbcf9213986e2038abe6a09dc2940998df08d82e87d474
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SSDEEP
12288:koywWrwlTyC9yR+xBP4wMpAuhjH8/Hl19KKjNgzqE0CM6EpJMwk:PlTX9Xj4w+hbM1/g2kM
Malware Config
Extracted
djvu
http://cajgtus.com/test1/get.php
-
extension
.watz
-
offline_id
Lc3VTezPWbMhuVAQFzJUdeA68PwI7UDpc5aKHYt1
- payload_url
-
ransomnote
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Signatures
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Detected Djvu ransomware 13 IoCs
Processes:
resource yara_rule behavioral1/memory/1232-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1232-7-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1232-8-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1232-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2516-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2516-39-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2516-56-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2516-55-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2516-54-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2516-62-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2516-63-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2516-60-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2516-64-0x0000000000400000-0x0000000000537000-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:
3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2257386474-3982792636-3902186748-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\ff0ada2a-7c87-4640-9ad5-d06df64947d9\\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe\" --AutoStart" 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.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:
3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exedescription pid process target process PID 1548 set thread context of 1232 1548 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 2544 set thread context of 2516 2544 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
icacls.exe3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exepid process 1232 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 1232 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 2516 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 2516 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exedescription pid process target process PID 1548 wrote to memory of 1232 1548 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 1548 wrote to memory of 1232 1548 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 1548 wrote to memory of 1232 1548 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 1548 wrote to memory of 1232 1548 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 1548 wrote to memory of 1232 1548 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 1548 wrote to memory of 1232 1548 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 1548 wrote to memory of 1232 1548 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 1548 wrote to memory of 1232 1548 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 1548 wrote to memory of 1232 1548 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 1548 wrote to memory of 1232 1548 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 1548 wrote to memory of 1232 1548 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 1232 wrote to memory of 2924 1232 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe icacls.exe PID 1232 wrote to memory of 2924 1232 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe icacls.exe PID 1232 wrote to memory of 2924 1232 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe icacls.exe PID 1232 wrote to memory of 2924 1232 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe icacls.exe PID 1232 wrote to memory of 2544 1232 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 1232 wrote to memory of 2544 1232 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 1232 wrote to memory of 2544 1232 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 1232 wrote to memory of 2544 1232 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 2544 wrote to memory of 2516 2544 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 2544 wrote to memory of 2516 2544 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 2544 wrote to memory of 2516 2544 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 2544 wrote to memory of 2516 2544 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 2544 wrote to memory of 2516 2544 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 2544 wrote to memory of 2516 2544 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 2544 wrote to memory of 2516 2544 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 2544 wrote to memory of 2516 2544 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 2544 wrote to memory of 2516 2544 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 2544 wrote to memory of 2516 2544 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe PID 2544 wrote to memory of 2516 2544 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe"C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1548 -
C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe"C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe"2⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1232 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\ff0ada2a-7c87-4640-9ad5-d06df64947d9" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:2924 -
C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe"C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2544 -
C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe"C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2516
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD57fb5fa1534dcf77f2125b2403b30a0ee
SHA1365d96812a69ac0a4611ea4b70a3f306576cc3ea
SHA25633a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f
SHA512a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e
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Filesize
436B
MD5971c514f84bba0785f80aa1c23edfd79
SHA1732acea710a87530c6b08ecdf32a110d254a54c8
SHA256f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895
SHA51243dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Filesize174B
MD58710d89bee374081274a157ca57b0ffe
SHA1c60ebbd345ec1742df176905dc2399470da43f13
SHA25603d97b5ea5c05314999c16bc6a61a72e2a8daf6d8a939240ccf6457afd7fb98e
SHA5129a7a1642fcbb3f5e06be36966425118347af80a10c10be93224cc99cc6d31aad1172e2750a860d2443915ebba151c8103e12c4197b6dbb65574e59f13bcf67c6
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize342B
MD5c9a2ae3d9a86c4c871125da8e8b63566
SHA18ab688084b343bd693bcebe806e2f3c236b6c2c4
SHA256657bc2658117be4fb1c51ca138cc8ae544dcf70bb57113c40d942d74c7ecdd1b
SHA512a7697da2fd52133fb9295f42bb8c011186b2fe014cbeb86f8b5526aa2c07010f8e57f7773e19b637fe2754d31720d40f5a21b21e277a92741c27671a2b46b905
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize170B
MD5fc290d8dd2a73a0fa6f17087540de385
SHA1466f627161bd3a4c2d4cd2bf95f4c13200969cf8
SHA25691c58648163b5c67a71a1804c4cbafac4c80674520b656f6699bfe284a6dd2a4
SHA512485849160148e83c49b226ff891a550ca6fa31b4c314e6337c858787640887165993bf490d758e8a98b6cacd8a33eef283bff3d84390eafbdcd919d470fe2ed5
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Filesize
70KB
MD549aebf8cbd62d92ac215b2923fb1b9f5
SHA11723be06719828dda65ad804298d0431f6aff976
SHA256b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b
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C:\Users\Admin\AppData\Local\ff0ada2a-7c87-4640-9ad5-d06df64947d9\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe
Filesize729KB
MD5d7528cd33b73718b5949277420681f90
SHA161d97f8da20ff2995890ce5f2c8a2c9e6e51c078
SHA2563b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1
SHA512b3dab709e19a2a8bad92b259ea1739ad55564f6fe31e9f4e502b6280ae6c70cdf5a0f1fda208887da4bbcf9213986e2038abe6a09dc2940998df08d82e87d474