Resubmissions
21-09-2024 16:40
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240921-t46ecssfjj 1021-09-2024 12:12
240921-pdcbda1fkd 10Analysis
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max time kernel
297s -
max time network
207s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
21-09-2024 16:40
Static task
static1
Behavioral task
behavioral1
Sample
82C4.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
82C4.exe
Resource
win10v2004-20240802-en
General
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Target
82C4.exe
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Size
768KB
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MD5
663a7ee6f23102380056645ded592075
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SHA1
42f7de8be635ed37f91c289a81e71bc67139adb9
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SHA256
2f9c6d06d25dfea43bb52e9b81df3dd3ebdef5d066573494598e77c450937e8f
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SHA512
9d4e890505ccda9a0b3cd971598153c1e33be481d10c1133851f621fc4aad148554977b3162d36cb97759fde5603cfebf7876ad39199eee0519ecd3b1f857d09
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SSDEEP
12288:wyEfg9+yzz81R9K4UW/ug6nkYxMDoG8AGjn6PkRnTFXD1l9e8k7phRuHH8n4p:IQmQ43/rYE8vdnTFRU6H84
Malware Config
Extracted
djvu
http://rlrz.org/fhsgtsspen6/get.php
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extension
.nqsq
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offline_id
OGykROpbgxJhrG1qc9yB9PwnsSv1Eo04vOCP0rt1
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payload_url
http://znpst.top/dl/build2.exe
http://rlrz.org/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 25 IoCs
Processes:
resource yara_rule behavioral2/memory/3912-2-0x0000000000890000-0x00000000009AB000-memory.dmp family_djvu behavioral2/memory/5000-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5000-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5000-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5000-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5000-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3228-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3228-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3228-25-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4828-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4828-39-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1500-43-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1500-44-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1500-45-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2104-48-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2104-49-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1500-51-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1500-53-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1500-54-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1500-57-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1500-56-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1500-58-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3888-61-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3888-62-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1500-64-0x0000000000400000-0x0000000000537000-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.
Processes:
82C4.exe82C4.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation 82C4.exe Key value queried \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation 82C4.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
82C4.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\40d61d1f-3109-4433-bcbe-1814db7b374b\\82C4.exe\" --AutoStart" 82C4.exe -
Looks up external IP address via web service 6 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 53 api.2ip.ua 12 api.2ip.ua 13 api.2ip.ua 29 api.2ip.ua 30 api.2ip.ua 34 api.2ip.ua -
Suspicious use of SetThreadContext 6 IoCs
Processes:
82C4.exe82C4.exe82C4.exe82C4.exe82C4.exe82C4.exedescription pid Process procid_target PID 3912 set thread context of 5000 3912 82C4.exe 82 PID 3252 set thread context of 3228 3252 82C4.exe 90 PID 4452 set thread context of 4828 4452 82C4.exe 105 PID 4368 set thread context of 1500 4368 82C4.exe 107 PID 2656 set thread context of 2104 2656 82C4.exe 109 PID 228 set thread context of 3888 228 82C4.exe 113 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
Processes:
WerFault.exepid pid_target Process procid_target 3668 3228 WerFault.exe 90 -
System Location Discovery: System Language Discovery 1 TTPs 13 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
82C4.exe82C4.exe82C4.exe82C4.exe82C4.exe82C4.exe82C4.exe82C4.exe82C4.exe82C4.exe82C4.exeicacls.exe82C4.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 82C4.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 82C4.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 82C4.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 82C4.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 82C4.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 82C4.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 82C4.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 82C4.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 82C4.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 82C4.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 82C4.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 82C4.exe -
Suspicious behavior: EnumeratesProcesses 10 IoCs
Processes:
82C4.exe82C4.exe82C4.exe82C4.exe82C4.exepid Process 5000 82C4.exe 5000 82C4.exe 4828 82C4.exe 4828 82C4.exe 1500 82C4.exe 1500 82C4.exe 2104 82C4.exe 2104 82C4.exe 3888 82C4.exe 3888 82C4.exe -
Suspicious use of WriteProcessMemory 64 IoCs
Processes:
82C4.exe82C4.exe82C4.exe82C4.exe82C4.exe82C4.exe82C4.exe82C4.exedescription pid Process procid_target PID 3912 wrote to memory of 5000 3912 82C4.exe 82 PID 3912 wrote to memory of 5000 3912 82C4.exe 82 PID 3912 wrote to memory of 5000 3912 82C4.exe 82 PID 3912 wrote to memory of 5000 3912 82C4.exe 82 PID 3912 wrote to memory of 5000 3912 82C4.exe 82 PID 3912 wrote to memory of 5000 3912 82C4.exe 82 PID 3912 wrote to memory of 5000 3912 82C4.exe 82 PID 3912 wrote to memory of 5000 3912 82C4.exe 82 PID 3912 wrote to memory of 5000 3912 82C4.exe 82 PID 3912 wrote to memory of 5000 3912 82C4.exe 82 PID 5000 wrote to memory of 4860 5000 82C4.exe 85 PID 5000 wrote to memory of 4860 5000 82C4.exe 85 PID 5000 wrote to memory of 4860 5000 82C4.exe 85 PID 5000 wrote to memory of 3252 5000 82C4.exe 86 PID 5000 wrote to memory of 3252 5000 82C4.exe 86 PID 5000 wrote to memory of 3252 5000 82C4.exe 86 PID 3252 wrote to memory of 3228 3252 82C4.exe 90 PID 3252 wrote to memory of 3228 3252 82C4.exe 90 PID 3252 wrote to memory of 3228 3252 82C4.exe 90 PID 3252 wrote to memory of 3228 3252 82C4.exe 90 PID 3252 wrote to memory of 3228 3252 82C4.exe 90 PID 3252 wrote to memory of 3228 3252 82C4.exe 90 PID 3252 wrote to memory of 3228 3252 82C4.exe 90 PID 3252 wrote to memory of 3228 3252 82C4.exe 90 PID 3252 wrote to memory of 3228 3252 82C4.exe 90 PID 3252 wrote to memory of 3228 3252 82C4.exe 90 PID 4452 wrote to memory of 4828 4452 82C4.exe 105 PID 4452 wrote to memory of 4828 4452 82C4.exe 105 PID 4452 wrote to memory of 4828 4452 82C4.exe 105 PID 4452 wrote to memory of 4828 4452 82C4.exe 105 PID 4452 wrote to memory of 4828 4452 82C4.exe 105 PID 4452 wrote to memory of 4828 4452 82C4.exe 105 PID 4452 wrote to memory of 4828 4452 82C4.exe 105 PID 4452 wrote to memory of 4828 4452 82C4.exe 105 PID 4452 wrote to memory of 4828 4452 82C4.exe 105 PID 4452 wrote to memory of 4828 4452 82C4.exe 105 PID 4828 wrote to memory of 4368 4828 82C4.exe 106 PID 4828 wrote to memory of 4368 4828 82C4.exe 106 PID 4828 wrote to memory of 4368 4828 82C4.exe 106 PID 4368 wrote to memory of 1500 4368 82C4.exe 107 PID 4368 wrote to memory of 1500 4368 82C4.exe 107 PID 4368 wrote to memory of 1500 4368 82C4.exe 107 PID 4368 wrote to memory of 1500 4368 82C4.exe 107 PID 4368 wrote to memory of 1500 4368 82C4.exe 107 PID 4368 wrote to memory of 1500 4368 82C4.exe 107 PID 4368 wrote to memory of 1500 4368 82C4.exe 107 PID 4368 wrote to memory of 1500 4368 82C4.exe 107 PID 4368 wrote to memory of 1500 4368 82C4.exe 107 PID 4368 wrote to memory of 1500 4368 82C4.exe 107 PID 2656 wrote to memory of 2104 2656 82C4.exe 109 PID 2656 wrote to memory of 2104 2656 82C4.exe 109 PID 2656 wrote to memory of 2104 2656 82C4.exe 109 PID 2656 wrote to memory of 2104 2656 82C4.exe 109 PID 2656 wrote to memory of 2104 2656 82C4.exe 109 PID 2656 wrote to memory of 2104 2656 82C4.exe 109 PID 2656 wrote to memory of 2104 2656 82C4.exe 109 PID 2656 wrote to memory of 2104 2656 82C4.exe 109 PID 2656 wrote to memory of 2104 2656 82C4.exe 109 PID 2656 wrote to memory of 2104 2656 82C4.exe 109 PID 228 wrote to memory of 3888 228 82C4.exe 113 PID 228 wrote to memory of 3888 228 82C4.exe 113 PID 228 wrote to memory of 3888 228 82C4.exe 113 PID 228 wrote to memory of 3888 228 82C4.exe 113 PID 228 wrote to memory of 3888 228 82C4.exe 113
Processes
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C:\Users\Admin\AppData\Local\Temp\82C4.exe"C:\Users\Admin\AppData\Local\Temp\82C4.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3912 -
C:\Users\Admin\AppData\Local\Temp\82C4.exe"C:\Users\Admin\AppData\Local\Temp\82C4.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:5000 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\40d61d1f-3109-4433-bcbe-1814db7b374b" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:4860
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C:\Users\Admin\AppData\Local\Temp\82C4.exe"C:\Users\Admin\AppData\Local\Temp\82C4.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3252 -
C:\Users\Admin\AppData\Local\Temp\82C4.exe"C:\Users\Admin\AppData\Local\Temp\82C4.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
PID:3228 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3228 -s 5725⤵
- Program crash
PID:3668
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3228 -ip 32281⤵PID:228
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:4972
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C:\Users\Admin\AppData\Local\Temp\82C4.exe"C:\Users\Admin\AppData\Local\Temp\82C4.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4452 -
C:\Users\Admin\AppData\Local\Temp\82C4.exe"C:\Users\Admin\AppData\Local\Temp\82C4.exe"2⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4828 -
C:\Users\Admin\AppData\Local\Temp\82C4.exe"C:\Users\Admin\AppData\Local\Temp\82C4.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4368 -
C:\Users\Admin\AppData\Local\Temp\82C4.exe"C:\Users\Admin\AppData\Local\Temp\82C4.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:1500
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C:\Users\Admin\AppData\Local\Temp\82C4.exe"C:\Users\Admin\AppData\Local\Temp\82C4.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2656 -
C:\Users\Admin\AppData\Local\Temp\82C4.exe"C:\Users\Admin\AppData\Local\Temp\82C4.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2104
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C:\Users\Admin\AppData\Local\Temp\82C4.exe"C:\Users\Admin\AppData\Local\Temp\82C4.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:228 -
C:\Users\Admin\AppData\Local\Temp\82C4.exe"C:\Users\Admin\AppData\Local\Temp\82C4.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:3888
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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
MD5191d1ef3b51c521b8cc24cb0a1943fd3
SHA17d7456830008d81fa6325dd88142a1e10c37eed5
SHA25666156114e0335494edb6c55af86bb3473db56282a2bbca7b9ac104a7d0099e0b
SHA51293182d1677763d1295ef847918f72de490923f8cfcb3a1580ad17967ccfe063c6dc74d7f53b568b9f6d8936741453f941f80d9f08de64a816f0670e74fd298ec
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize170B
MD5f22e4ea24fa5316c3c1b4f08d551e7a3
SHA19690460b76dd698811f5939784c22498899b4d17
SHA256cb5a96876b94fb293b45e07896ddb05376577b780dd52ab1553de7403e1b807f
SHA5127b8b142437756ff617e8f555c00858ae6d7329889c5b26e6e9bb7d9dcf3dfb4f7d4ba4e640128023e3e6ebd1d960bf26862ccd0e8e323579639fc5686fa29d75
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Filesize
768KB
MD5663a7ee6f23102380056645ded592075
SHA142f7de8be635ed37f91c289a81e71bc67139adb9
SHA2562f9c6d06d25dfea43bb52e9b81df3dd3ebdef5d066573494598e77c450937e8f
SHA5129d4e890505ccda9a0b3cd971598153c1e33be481d10c1133851f621fc4aad148554977b3162d36cb97759fde5603cfebf7876ad39199eee0519ecd3b1f857d09