Analysis
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max time kernel
145s -
max time network
123s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
18-08-2024 11:39
Static task
static1
Behavioral task
behavioral1
Sample
d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
Resource
win10v2004-20240802-en
General
-
Target
d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
-
Size
777KB
-
MD5
006edf0ac466164ddc9e0ac56474fe0a
-
SHA1
ee9f512713af63759f11279090d2c8004762735b
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SHA256
d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a
-
SHA512
43305369fea2dad52d51bc9d5947a2f7e78d33baadd07093c250b9eb1fd3762c511033bbfae2b8d6eb52254306d137e29cd15e0b30b0f6d44a9d4f3d12b8b808
-
SSDEEP
24576:aG18MH/r+RAIFqLN7/uW/Nau09jMxrc5N:3aMD+RANBKIJ09j
Malware Config
Extracted
djvu
http://cajgtus.com/test1/get.php
-
extension
.watz
-
offline_id
Lc3VTezPWbMhuVAQFzJUdeA68PwI7UDpc5aKHYt1
- payload_url
-
ransomnote
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Signatures
-
Detected Djvu ransomware 17 IoCs
Processes:
resource yara_rule behavioral2/memory/4792-2-0x00000000021E0000-0x00000000022FB000-memory.dmp family_djvu behavioral2/memory/4464-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4464-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4464-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4464-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4464-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/552-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/552-25-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/552-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/552-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/552-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/552-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/552-39-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/552-42-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/552-41-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/552-43-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/552-44-0x0000000000400000-0x0000000000537000-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:
d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\65dbe763-efdd-4aa0-a948-a32b5eecebb8\\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe\" --AutoStart" d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.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 24 api.2ip.ua 30 api.2ip.ua 23 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exed343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exedescription pid process target process PID 4792 set thread context of 4464 4792 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4784 set thread context of 552 4784 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.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:
d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exed343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exeicacls.exed343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exed343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exed343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exepid process 4464 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe 4464 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe 552 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe 552 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exed343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exed343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exedescription pid process target process PID 4792 wrote to memory of 4464 4792 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4792 wrote to memory of 4464 4792 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4792 wrote to memory of 4464 4792 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4792 wrote to memory of 4464 4792 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4792 wrote to memory of 4464 4792 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4792 wrote to memory of 4464 4792 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4792 wrote to memory of 4464 4792 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4792 wrote to memory of 4464 4792 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4792 wrote to memory of 4464 4792 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4792 wrote to memory of 4464 4792 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4464 wrote to memory of 1396 4464 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe icacls.exe PID 4464 wrote to memory of 1396 4464 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe icacls.exe PID 4464 wrote to memory of 1396 4464 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe icacls.exe PID 4464 wrote to memory of 4784 4464 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4464 wrote to memory of 4784 4464 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4464 wrote to memory of 4784 4464 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4784 wrote to memory of 552 4784 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4784 wrote to memory of 552 4784 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4784 wrote to memory of 552 4784 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4784 wrote to memory of 552 4784 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4784 wrote to memory of 552 4784 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4784 wrote to memory of 552 4784 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4784 wrote to memory of 552 4784 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4784 wrote to memory of 552 4784 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4784 wrote to memory of 552 4784 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe PID 4784 wrote to memory of 552 4784 d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe"C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4792 -
C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe"C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4464 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\65dbe763-efdd-4aa0-a948-a32b5eecebb8" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:1396 -
C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe"C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4784 -
C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe"C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:552
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
MD5e5fe23b14f8daaf9a8567ee6d9a07082
SHA151d3fe2af82855cab6c5e47e75dc5e40365eb528
SHA256d214a759eecd60d04796ea8bd95ad256ea864ac04cbf52823f0d3dde0228dbb0
SHA512dbdf09145a46dbe534f56bb14441d8284deb2a0e5aa6f3a481d05f72478d603656b057822a65e9f98d764fc614dbc61dc03adf6cf3b3757a277ad90550fa6787
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize170B
MD5d607b324aa82a440eca874e3c2965853
SHA17d1283686b89b53ebe2cad19b8fffe1386b3300a
SHA256704e3b50a825a13fc4ccd118f148961566582c8769a087fb2b976874769544c3
SHA51261c7b5221d21fccd9030d2e4464592ea1156b8d13d8b222f3e760a11224a012a09773b3b32ad65f9660be1cb09200638ec2844fc093f2068155f659e761b66db
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C:\Users\Admin\AppData\Local\65dbe763-efdd-4aa0-a948-a32b5eecebb8\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
Filesize777KB
MD5006edf0ac466164ddc9e0ac56474fe0a
SHA1ee9f512713af63759f11279090d2c8004762735b
SHA256d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a
SHA51243305369fea2dad52d51bc9d5947a2f7e78d33baadd07093c250b9eb1fd3762c511033bbfae2b8d6eb52254306d137e29cd15e0b30b0f6d44a9d4f3d12b8b808