Analysis
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max time kernel
142s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240729-en -
resource tags
arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system -
submitted
18-08-2024 11:23
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20240802-en
General
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Target
file.exe
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Size
777KB
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MD5
006edf0ac466164ddc9e0ac56474fe0a
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SHA1
ee9f512713af63759f11279090d2c8004762735b
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SHA256
d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a
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SHA512
43305369fea2dad52d51bc9d5947a2f7e78d33baadd07093c250b9eb1fd3762c511033bbfae2b8d6eb52254306d137e29cd15e0b30b0f6d44a9d4f3d12b8b808
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SSDEEP
24576:aG18MH/r+RAIFqLN7/uW/Nau09jMxrc5N:3aMD+RANBKIJ09j
Malware Config
Extracted
djvu
http://cajgtus.com/test1/get.php
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extension
.watz
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offline_id
Lc3VTezPWbMhuVAQFzJUdeA68PwI7UDpc5aKHYt1
- payload_url
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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/2192-2-0x00000000006B0000-0x00000000007CB000-memory.dmp family_djvu behavioral1/memory/2116-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2116-7-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2116-8-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2116-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2248-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2248-39-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2248-55-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2248-56-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2248-54-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2248-62-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2248-63-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2248-60-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2248-64-0x0000000000400000-0x0000000000537000-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:
file.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\\3bb5ab68-0524-42de-a018-4d17f0bf9510\\file.exe\" --AutoStart" file.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:
file.exefile.exedescription pid process target process PID 2192 set thread context of 2116 2192 file.exe file.exe PID 2608 set thread context of 2248 2608 file.exe file.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:
file.exefile.exeicacls.exefile.exefile.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language file.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language file.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language file.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language file.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
file.exefile.exepid process 2116 file.exe 2116 file.exe 2248 file.exe 2248 file.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
file.exefile.exefile.exedescription pid process target process PID 2192 wrote to memory of 2116 2192 file.exe file.exe PID 2192 wrote to memory of 2116 2192 file.exe file.exe PID 2192 wrote to memory of 2116 2192 file.exe file.exe PID 2192 wrote to memory of 2116 2192 file.exe file.exe PID 2192 wrote to memory of 2116 2192 file.exe file.exe PID 2192 wrote to memory of 2116 2192 file.exe file.exe PID 2192 wrote to memory of 2116 2192 file.exe file.exe PID 2192 wrote to memory of 2116 2192 file.exe file.exe PID 2192 wrote to memory of 2116 2192 file.exe file.exe PID 2192 wrote to memory of 2116 2192 file.exe file.exe PID 2192 wrote to memory of 2116 2192 file.exe file.exe PID 2116 wrote to memory of 3008 2116 file.exe icacls.exe PID 2116 wrote to memory of 3008 2116 file.exe icacls.exe PID 2116 wrote to memory of 3008 2116 file.exe icacls.exe PID 2116 wrote to memory of 3008 2116 file.exe icacls.exe PID 2116 wrote to memory of 2608 2116 file.exe file.exe PID 2116 wrote to memory of 2608 2116 file.exe file.exe PID 2116 wrote to memory of 2608 2116 file.exe file.exe PID 2116 wrote to memory of 2608 2116 file.exe file.exe PID 2608 wrote to memory of 2248 2608 file.exe file.exe PID 2608 wrote to memory of 2248 2608 file.exe file.exe PID 2608 wrote to memory of 2248 2608 file.exe file.exe PID 2608 wrote to memory of 2248 2608 file.exe file.exe PID 2608 wrote to memory of 2248 2608 file.exe file.exe PID 2608 wrote to memory of 2248 2608 file.exe file.exe PID 2608 wrote to memory of 2248 2608 file.exe file.exe PID 2608 wrote to memory of 2248 2608 file.exe file.exe PID 2608 wrote to memory of 2248 2608 file.exe file.exe PID 2608 wrote to memory of 2248 2608 file.exe file.exe PID 2608 wrote to memory of 2248 2608 file.exe file.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2192 -
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"2⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2116 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\3bb5ab68-0524-42de-a018-4d17f0bf9510" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:3008 -
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2608 -
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2248
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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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
MD5da535fa7d647fba40801d4a6f220aa29
SHA1c481cb9f46c78bdd37189d9f22bf3b07f9adbd7f
SHA256ec92f858a528cf9c5c0f1c3f14c604b72f0603ae5cd58461302441e06953866e
SHA51207a072b9a44cbecb4f30684262568edfaf9d17e6e47d1e4b83df7394ba94b8517c93119a1a4998153b5beb0d6142e0b0504d84cc69ea468a4e74cab749cb7739
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize342B
MD532a2975b75c11bf2f01cd3fad1e0d64a
SHA164ab00edf3fbb67a9e860d07b67a127d9f4c785f
SHA256a8657e448f9e33e7c76d6c96e76f34e85c1522088b1d009435f21721ed5865ab
SHA5120ebce890cdda442cf858a3bb19b16dddf4dbba1711764936eaeb8b48062a2a9a5b977223ad7bba5ef536082418c28191ec0f62dca30d1f84e9822264012b7d14
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize170B
MD5735ea2c9bc752f4db2eab728f40257c6
SHA117af493999215997c499f4558016b4030c1d9afb
SHA2560324e7b35622fa5dbbdc12d3285aac2e291cd193172af3179a7e601a3fe8897d
SHA5126482864dae5489ff2a4b74e1712b33b43eee632b2626a6e0eee024dab1c72ed5a85ab790b03878710d9dbc40329bfc521c2db8fe88200793b4320a40c171f930
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Filesize
777KB
MD5006edf0ac466164ddc9e0ac56474fe0a
SHA1ee9f512713af63759f11279090d2c8004762735b
SHA256d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a
SHA51243305369fea2dad52d51bc9d5947a2f7e78d33baadd07093c250b9eb1fd3762c511033bbfae2b8d6eb52254306d137e29cd15e0b30b0f6d44a9d4f3d12b8b808
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Filesize
70KB
MD549aebf8cbd62d92ac215b2923fb1b9f5
SHA11723be06719828dda65ad804298d0431f6aff976
SHA256b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b