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Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
07/09/2024, 05:44
Static task
static1
Behavioral task
behavioral1
Sample
opgdt.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
opgdt.exe
Resource
win10v2004-20240802-en
General
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Target
opgdt.exe
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Size
736KB
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MD5
664de3b2a24525498193312ba05bbd59
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SHA1
6aec18d934495a68b8a3fbee3ac6e4d0a44f0400
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SHA256
f23c7c958001a1eb56b4f4fee91d024f22eed3a3fd88a59eefff09a677ad7478
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SHA512
2967289dc6eaa0673ee71718e3493cd36f4a27f9d1edbb68bf6d0cdc66c9373fea9b1bed1f1238013f064d4901666fb535deb84e541875a58d0cb07dd256177f
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SSDEEP
12288:xIq8+GU7BALLZq4ah/h+c+s9k0vI50mJqLGiPMDoEA/7LCy2inm:xIqlhGFq4ahJ+cd9k0vI50mJiDYoJjLC
Malware Config
Extracted
djvu
http://zexeq.com/raud/get.php
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extension
.coza
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offline_id
O8Ao46dcCReRPC4I1PGMYsRFFc9WI5eOp0O3MFt1
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payload_url
http://colisumy.com/dl/build2.exe
http://zexeq.com/files/1/build3.exe
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ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-EPBZCVAS8s Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0693JOsie
Signatures
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Detected Djvu ransomware 17 IoCs
resource yara_rule behavioral2/memory/4348-2-0x0000000004990000-0x0000000004AAB000-memory.dmp family_djvu behavioral2/memory/5016-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5016-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5016-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5016-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5016-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4420-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4420-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4420-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4420-43-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4420-49-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4420-60-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4420-61-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4420-63-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4420-64-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4420-65-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4420-66-0x0000000000400000-0x0000000000537000-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 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation opgdt.exe Key value queried \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation opgdt.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 3176 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\5339e9ea-fd88-444a-92aa-61d08849db9a\\opgdt.exe\" --AutoStart" opgdt.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.
flow ioc 5 api.2ip.ua 14 api.2ip.ua 4 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4348 set thread context of 5016 4348 opgdt.exe 86 PID 1460 set thread context of 4420 1460 opgdt.exe 91 -
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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language opgdt.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language opgdt.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language opgdt.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language opgdt.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 5016 opgdt.exe 5016 opgdt.exe 4420 opgdt.exe 4420 opgdt.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 4348 wrote to memory of 5016 4348 opgdt.exe 86 PID 4348 wrote to memory of 5016 4348 opgdt.exe 86 PID 4348 wrote to memory of 5016 4348 opgdt.exe 86 PID 4348 wrote to memory of 5016 4348 opgdt.exe 86 PID 4348 wrote to memory of 5016 4348 opgdt.exe 86 PID 4348 wrote to memory of 5016 4348 opgdt.exe 86 PID 4348 wrote to memory of 5016 4348 opgdt.exe 86 PID 4348 wrote to memory of 5016 4348 opgdt.exe 86 PID 4348 wrote to memory of 5016 4348 opgdt.exe 86 PID 4348 wrote to memory of 5016 4348 opgdt.exe 86 PID 5016 wrote to memory of 3176 5016 opgdt.exe 88 PID 5016 wrote to memory of 3176 5016 opgdt.exe 88 PID 5016 wrote to memory of 3176 5016 opgdt.exe 88 PID 5016 wrote to memory of 1460 5016 opgdt.exe 89 PID 5016 wrote to memory of 1460 5016 opgdt.exe 89 PID 5016 wrote to memory of 1460 5016 opgdt.exe 89 PID 1460 wrote to memory of 4420 1460 opgdt.exe 91 PID 1460 wrote to memory of 4420 1460 opgdt.exe 91 PID 1460 wrote to memory of 4420 1460 opgdt.exe 91 PID 1460 wrote to memory of 4420 1460 opgdt.exe 91 PID 1460 wrote to memory of 4420 1460 opgdt.exe 91 PID 1460 wrote to memory of 4420 1460 opgdt.exe 91 PID 1460 wrote to memory of 4420 1460 opgdt.exe 91 PID 1460 wrote to memory of 4420 1460 opgdt.exe 91 PID 1460 wrote to memory of 4420 1460 opgdt.exe 91 PID 1460 wrote to memory of 4420 1460 opgdt.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\opgdt.exe"C:\Users\Admin\AppData\Local\Temp\opgdt.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4348 -
C:\Users\Admin\AppData\Local\Temp\opgdt.exe"C:\Users\Admin\AppData\Local\Temp\opgdt.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:5016 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\5339e9ea-fd88-444a-92aa-61d08849db9a" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:3176
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C:\Users\Admin\AppData\Local\Temp\opgdt.exe"C:\Users\Admin\AppData\Local\Temp\opgdt.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1460 -
C:\Users\Admin\AppData\Local\Temp\opgdt.exe"C:\Users\Admin\AppData\Local\Temp\opgdt.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:4420
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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
MD58136a2798dd6e4424e20df13c81cdbf5
SHA1dd9606254be635c2cbb4cba7a52b77db6e8390f4
SHA256db452f87e52a5bd4dc24b86279646bf955738ca3a7ebdc598f45801dd278a6d3
SHA51292ecdb68c936cc8c9b9a113c98ecdf460c86007b3c77cb0e6f4104f630c6c82215703a0985d0b2a58436fe2897ba55fe014c0ab2e71ff82429bee6bc5570291f
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize170B
MD544c6823c5f99e46962c229201d2c273f
SHA10d3a0e7fac1502646eaad9c7350fd3e08d081c34
SHA2561bc6e333e005023b5020bc267d0f1672e16ad4cbe13e9863635cd3b86181ff45
SHA512a92c567e17716400a048b75b2c2a4100517e1911f62a488e81e12ab6f8014f3336b37855be4bd94bb0402f9a92c068e7a9a53d0e1105a1f7758cdc2b3d8a0dcd
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Filesize
736KB
MD5664de3b2a24525498193312ba05bbd59
SHA16aec18d934495a68b8a3fbee3ac6e4d0a44f0400
SHA256f23c7c958001a1eb56b4f4fee91d024f22eed3a3fd88a59eefff09a677ad7478
SHA5122967289dc6eaa0673ee71718e3493cd36f4a27f9d1edbb68bf6d0cdc66c9373fea9b1bed1f1238013f064d4901666fb535deb84e541875a58d0cb07dd256177f
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Filesize
437B
MD56910426a598bc0b07dd6ca7c2faf5c22
SHA14304d65a08652b167453997e1464cc6ef034be23
SHA256ebfef207462c29030b8a06068c8cbf1cfeae1304813b9cdbfa2d705b314bf692
SHA5125e96757fa5daa336968aa07d5fe5525040a081a547dd6bad55bed4539ad76b3f96aabd38f461efdafa4a427963b2a3187cc40dfa60c74e6c6ddf738176381952
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Filesize
449B
MD5caa078f0348cda98328127c142e3bfed
SHA1e38274d642c806a3affcca8f7e37b61f591c47e6
SHA25691faeb982f34313750a83d74c5464abe4e01357d1a7ea4253973509bc0e9d219
SHA5122e6a5c482b5226079c6b4bd9a706537c372a3b43962f64be6bdd281e3217f963316ef0eba38164890bdf14af6558eb26605320487f0a0c841be9bb813c2ee5d6