Analysis
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max time kernel
142s -
max time network
114s -
platform
windows10-2004_x64 -
resource
win10v2004-20250314-en -
resource tags
arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system -
submitted
15/03/2025, 01:35
Static task
static1
Behavioral task
behavioral1
Sample
2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe
Resource
win10v2004-20250314-en
General
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Target
2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe
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Size
735KB
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MD5
20f7e67f860383010d15d12a842b53e1
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SHA1
9d5f6ea96520f13394999d11ddbc0c486f13c824
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SHA256
eb6a892cf3e87999e9c01c35d082c1308a8744b16aa1b5403fc40cc63eb0f02f
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SHA512
3b0dead54a6966b93892915ee4e10695a0a07b94745b18df982ae784cbf1d8d6b4b6de9c031e59cfdde941135eec823c54b5caf24adf7a7a9d9d4c93e90460e9
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SSDEEP
12288:qmhHfel6G6+O3B1uONaZXxQ/nZ9yJouprwTxGgS/4EH30KNd:jxDB1uON4XxQPZMJo8ngo48Eqd
Malware Config
Extracted
djvu
http://zexeq.com/raud/get.php
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extension
.wayn
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offline_id
V5TMuF1BBuDZFeJXDU5xmjrzp6rwS1IuZWNpDCt1
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payload_url
http://colisumy.com/dl/build2.exe
http://zexeq.com/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 19 IoCs
resource yara_rule behavioral2/memory/628-2-0x0000000002330000-0x000000000244B000-memory.dmp family_djvu behavioral2/memory/112-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/112-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/112-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/112-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/112-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4800-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4800-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4800-26-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4800-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4800-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4800-49-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4800-55-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4800-66-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4800-67-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4800-70-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4800-69-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4800-71-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4800-72-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Djvu 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-1-5-21-3342763580-2723508992-2885672917-1000\Control Panel\International\Geo\Nation 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe Key value queried \REGISTRY\USER\S-1-5-21-3342763580-2723508992-2885672917-1000\Control Panel\International\Geo\Nation 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 3808 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3342763580-2723508992-2885672917-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\439f5105-bd5b-4506-bfc3-a8e325466b9c\\2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe\" --AutoStart" 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.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 1 api.2ip.ua 2 api.2ip.ua 15 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 628 set thread context of 112 628 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 87 PID 5892 set thread context of 4800 5892 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.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 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 112 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 112 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 4800 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 4800 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 628 wrote to memory of 112 628 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 87 PID 628 wrote to memory of 112 628 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 87 PID 628 wrote to memory of 112 628 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 87 PID 628 wrote to memory of 112 628 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 87 PID 628 wrote to memory of 112 628 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 87 PID 628 wrote to memory of 112 628 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 87 PID 628 wrote to memory of 112 628 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 87 PID 628 wrote to memory of 112 628 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 87 PID 628 wrote to memory of 112 628 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 87 PID 628 wrote to memory of 112 628 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 87 PID 112 wrote to memory of 3808 112 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 88 PID 112 wrote to memory of 3808 112 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 88 PID 112 wrote to memory of 3808 112 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 88 PID 112 wrote to memory of 5892 112 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 89 PID 112 wrote to memory of 5892 112 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 89 PID 112 wrote to memory of 5892 112 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 89 PID 5892 wrote to memory of 4800 5892 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 91 PID 5892 wrote to memory of 4800 5892 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 91 PID 5892 wrote to memory of 4800 5892 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 91 PID 5892 wrote to memory of 4800 5892 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 91 PID 5892 wrote to memory of 4800 5892 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 91 PID 5892 wrote to memory of 4800 5892 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 91 PID 5892 wrote to memory of 4800 5892 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 91 PID 5892 wrote to memory of 4800 5892 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 91 PID 5892 wrote to memory of 4800 5892 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 91 PID 5892 wrote to memory of 4800 5892 2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe"C:\Users\Admin\AppData\Local\Temp\2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:628 -
C:\Users\Admin\AppData\Local\Temp\2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe"C:\Users\Admin\AppData\Local\Temp\2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.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:112 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\439f5105-bd5b-4506-bfc3-a8e325466b9c" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:3808
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C:\Users\Admin\AppData\Local\Temp\2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe"C:\Users\Admin\AppData\Local\Temp\2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5892 -
C:\Users\Admin\AppData\Local\Temp\2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe"C:\Users\Admin\AppData\Local\Temp\2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:4800
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD5c9be626e9715952e9b70f92f912b9787
SHA1aa2e946d9ad9027172d0d321917942b7562d6abe
SHA256c13e8d22800c200915f87f71c31185053e4e60ca25de2e41e160e09cd2d815d4
SHA5127581b7c593785380e9db3ae760af85c1a889f607a3cd2aa5a2695a0e5a0fe8ee751578e88f7d8c997faeda804e2fc2655d859bee2832eace526ed4379edaa3f5
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Filesize
436B
MD5971c514f84bba0785f80aa1c23edfd79
SHA1732acea710a87530c6b08ecdf32a110d254a54c8
SHA256f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895
SHA51243dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Filesize174B
MD5c0da3bd4ea021620b2162c66de7047a3
SHA1c94ab95916115889edbe5517eb6dcc616d772459
SHA256557b4f2d4589f0ddc08864d062c327d29970aac6101fa2a699096680490afd23
SHA5120cb787f494cfc97096ef4558ef3587e31e9b9eb92c09d5eea4f2641f17c3994880f1513806dd300a3ddcd52295a3653b1656135ec23035f1a5b57ba935b0bda0
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize170B
MD5dbaf6125dae85abe1feb59fadc1e79ad
SHA112a3263b96735657f83189506cc9e6a33de8f7c1
SHA256b93a2cdf48d63063012aa9e8e34c9f2a19ce9f7ee549c2517fa044a80684df6f
SHA512d5fc935dd441b708416d7f6f9519b6a20d2083a430e66149cecf950a96e2058744bab4d9ad50021971e08cc70b72f607f79f795678228e75d3365e7a15e6acf9
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Filesize
437B
MD56910426a598bc0b07dd6ca7c2faf5c22
SHA14304d65a08652b167453997e1464cc6ef034be23
SHA256ebfef207462c29030b8a06068c8cbf1cfeae1304813b9cdbfa2d705b314bf692
SHA5125e96757fa5daa336968aa07d5fe5525040a081a547dd6bad55bed4539ad76b3f96aabd38f461efdafa4a427963b2a3187cc40dfa60c74e6c6ddf738176381952
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C:\Users\Admin\AppData\Local\439f5105-bd5b-4506-bfc3-a8e325466b9c\2025-03-15_20f7e67f860383010d15d12a842b53e1_amadey_rhadamanthys_smoke-loader.exe
Filesize735KB
MD520f7e67f860383010d15d12a842b53e1
SHA19d5f6ea96520f13394999d11ddbc0c486f13c824
SHA256eb6a892cf3e87999e9c01c35d082c1308a8744b16aa1b5403fc40cc63eb0f02f
SHA5123b0dead54a6966b93892915ee4e10695a0a07b94745b18df982ae784cbf1d8d6b4b6de9c031e59cfdde941135eec823c54b5caf24adf7a7a9d9d4c93e90460e9
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Filesize
449B
MD5caa078f0348cda98328127c142e3bfed
SHA1e38274d642c806a3affcca8f7e37b61f591c47e6
SHA25691faeb982f34313750a83d74c5464abe4e01357d1a7ea4253973509bc0e9d219
SHA5122e6a5c482b5226079c6b4bd9a706537c372a3b43962f64be6bdd281e3217f963316ef0eba38164890bdf14af6558eb26605320487f0a0c841be9bb813c2ee5d6