Analysis
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max time kernel
144s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
27-08-2024 17:33
Static task
static1
Behavioral task
behavioral1
Sample
b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
Resource
win10v2004-20240802-en
General
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Target
b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
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Size
801KB
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MD5
04e42207db45792cae0f6d3fd83f0680
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SHA1
cb17f3a1bb57541204afd27313b390e5ead5096c
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SHA256
b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9
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SHA512
b81da4e8961bc8c25e6832db5c1227cb253e178e6c5a4db0725ed073639d944b8d8012865ace42b2781b3f09b082e44a8a19c2ee326a173acb8757caebacbbf7
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SSDEEP
24576:7oL6YwH+hUfoA5snjj0ZvgCxwaEbNHzy9XSm3XNEGQnA:cL6Yw2UfoOoEwaONQXHNEGe
Malware Config
Extracted
djvu
http://asvb.top/nddddhsspen6/get.php
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extension
.pcqq
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offline_id
3pNdLH1399769YerBBKCxHURRAqLhaXsGw3Fbkt1
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payload_url
http://asvb.top/files/penelop/updatewin1.exe
http://asvb.top/files/penelop/updatewin2.exe
http://asvb.top/files/penelop/updatewin.exe
http://asvb.top/files/penelop/3.exe
http://asvb.top/files/penelop/4.exe
http://asvb.top/files/penelop/5.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 14 IoCs
resource yara_rule behavioral2/memory/4524-2-0x00000000022E0000-0x00000000023FB000-memory.dmp family_djvu behavioral2/memory/2072-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2072-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2072-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2072-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2072-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2056-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2056-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2056-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2056-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2056-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2056-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3284-48-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3284-49-0x0000000000400000-0x0000000000537000-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.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe -
Executes dropped EXE 2 IoCs
pid Process 3932 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 3284 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 1864 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e1e21ddf-6ee3-4fd1-960d-ec52e2a3d3f8\\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe\" --AutoStart" b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe -
Looks up external IP address via web service 4 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 17 api.2ip.ua 27 api.2ip.ua 82 api.2ip.ua 15 api.2ip.ua -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 4524 set thread context of 2072 4524 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 87 PID 4268 set thread context of 2056 4268 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 95 PID 3932 set thread context of 3284 3932 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 111 -
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 7 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 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2072 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 2072 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 2056 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 2056 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 3284 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 3284 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe -
Suspicious use of WriteProcessMemory 36 IoCs
description pid Process procid_target PID 4524 wrote to memory of 2072 4524 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 87 PID 4524 wrote to memory of 2072 4524 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 87 PID 4524 wrote to memory of 2072 4524 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 87 PID 4524 wrote to memory of 2072 4524 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 87 PID 4524 wrote to memory of 2072 4524 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 87 PID 4524 wrote to memory of 2072 4524 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 87 PID 4524 wrote to memory of 2072 4524 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 87 PID 4524 wrote to memory of 2072 4524 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 87 PID 4524 wrote to memory of 2072 4524 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 87 PID 4524 wrote to memory of 2072 4524 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 87 PID 2072 wrote to memory of 1864 2072 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 90 PID 2072 wrote to memory of 1864 2072 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 90 PID 2072 wrote to memory of 1864 2072 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 90 PID 2072 wrote to memory of 4268 2072 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 91 PID 2072 wrote to memory of 4268 2072 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 91 PID 2072 wrote to memory of 4268 2072 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 91 PID 4268 wrote to memory of 2056 4268 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 95 PID 4268 wrote to memory of 2056 4268 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 95 PID 4268 wrote to memory of 2056 4268 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 95 PID 4268 wrote to memory of 2056 4268 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 95 PID 4268 wrote to memory of 2056 4268 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 95 PID 4268 wrote to memory of 2056 4268 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 95 PID 4268 wrote to memory of 2056 4268 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 95 PID 4268 wrote to memory of 2056 4268 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 95 PID 4268 wrote to memory of 2056 4268 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 95 PID 4268 wrote to memory of 2056 4268 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 95 PID 3932 wrote to memory of 3284 3932 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 111 PID 3932 wrote to memory of 3284 3932 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 111 PID 3932 wrote to memory of 3284 3932 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 111 PID 3932 wrote to memory of 3284 3932 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 111 PID 3932 wrote to memory of 3284 3932 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 111 PID 3932 wrote to memory of 3284 3932 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 111 PID 3932 wrote to memory of 3284 3932 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 111 PID 3932 wrote to memory of 3284 3932 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 111 PID 3932 wrote to memory of 3284 3932 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 111 PID 3932 wrote to memory of 3284 3932 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe 111
Processes
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C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe"C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4524 -
C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe"C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.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:2072 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\e1e21ddf-6ee3-4fd1-960d-ec52e2a3d3f8" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:1864
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C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe"C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4268 -
C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe"C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2056
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C:\Users\Admin\AppData\Local\e1e21ddf-6ee3-4fd1-960d-ec52e2a3d3f8\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exeC:\Users\Admin\AppData\Local\e1e21ddf-6ee3-4fd1-960d-ec52e2a3d3f8\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe --Task1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3932 -
C:\Users\Admin\AppData\Local\e1e21ddf-6ee3-4fd1-960d-ec52e2a3d3f8\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exeC:\Users\Admin\AppData\Local\e1e21ddf-6ee3-4fd1-960d-ec52e2a3d3f8\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe --Task2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:3284
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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
MD53b7893626b2eca74d82e6b005ace1442
SHA146a379cd294cb496455773690b4103b6e6baed0a
SHA2563dc52125106f445b15e3df9bffc3bb5bf0b11d0d6a73cecfadb16f5a4ac343fe
SHA512ed823ca9cbc6ee0ff7be3a30d9782dab3b1d80b26b461fd6cb628378fadf38d276d33664e031688c9ff8a1af8b7a29b7415ae3373cac3ec2e7b5cf593b6f66b3
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize170B
MD5042151048b3e3c58a55d350dfec6880b
SHA1057ef12e681aa2072020ddbb8ecfeda9fd117a68
SHA2561b11a21057ec569c01f82779a7fc339db75e22e88e503afe363fdbc55a46799a
SHA512904a0a768e743b583aacdb16574782ea77687e9c07d22e47d769c53b108da86f9c1fa231c77257ae2e7fa26fa3a8ddbc3e19188de1adefbcf2e23960c3aef988
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C:\Users\Admin\AppData\Local\e1e21ddf-6ee3-4fd1-960d-ec52e2a3d3f8\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
Filesize801KB
MD504e42207db45792cae0f6d3fd83f0680
SHA1cb17f3a1bb57541204afd27313b390e5ead5096c
SHA256b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9
SHA512b81da4e8961bc8c25e6832db5c1227cb253e178e6c5a4db0725ed073639d944b8d8012865ace42b2781b3f09b082e44a8a19c2ee326a173acb8757caebacbbf7