Analysis
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max time kernel
102s -
max time network
105s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
24-08-2024 23:38
Static task
static1
Behavioral task
behavioral1
Sample
04e42207db45792cae0f6d3fd83f0680N.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
04e42207db45792cae0f6d3fd83f0680N.exe
Resource
win10v2004-20240802-en
General
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Target
04e42207db45792cae0f6d3fd83f0680N.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 9 IoCs
Processes:
resource yara_rule behavioral2/memory/4716-2-0x0000000002310000-0x000000000242B000-memory.dmp family_djvu behavioral2/memory/3528-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3528-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3528-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3528-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3528-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4964-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4964-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4964-26-0x0000000000400000-0x0000000000537000-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:
04e42207db45792cae0f6d3fd83f0680N.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation 04e42207db45792cae0f6d3fd83f0680N.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
04e42207db45792cae0f6d3fd83f0680N.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\75948559-0ffb-401d-9f4b-eb3d5bc23011\\04e42207db45792cae0f6d3fd83f0680N.exe\" --AutoStart" 04e42207db45792cae0f6d3fd83f0680N.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 17 api.2ip.ua 18 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
04e42207db45792cae0f6d3fd83f0680N.exe04e42207db45792cae0f6d3fd83f0680N.exedescription pid process target process PID 4716 set thread context of 3528 4716 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 4840 set thread context of 4964 4840 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe -
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 target process 4488 4964 WerFault.exe 04e42207db45792cae0f6d3fd83f0680N.exe -
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:
04e42207db45792cae0f6d3fd83f0680N.exe04e42207db45792cae0f6d3fd83f0680N.exeicacls.exe04e42207db45792cae0f6d3fd83f0680N.exe04e42207db45792cae0f6d3fd83f0680N.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 04e42207db45792cae0f6d3fd83f0680N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 04e42207db45792cae0f6d3fd83f0680N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 04e42207db45792cae0f6d3fd83f0680N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 04e42207db45792cae0f6d3fd83f0680N.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
04e42207db45792cae0f6d3fd83f0680N.exepid process 3528 04e42207db45792cae0f6d3fd83f0680N.exe 3528 04e42207db45792cae0f6d3fd83f0680N.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
04e42207db45792cae0f6d3fd83f0680N.exe04e42207db45792cae0f6d3fd83f0680N.exe04e42207db45792cae0f6d3fd83f0680N.exedescription pid process target process PID 4716 wrote to memory of 3528 4716 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 4716 wrote to memory of 3528 4716 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 4716 wrote to memory of 3528 4716 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 4716 wrote to memory of 3528 4716 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 4716 wrote to memory of 3528 4716 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 4716 wrote to memory of 3528 4716 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 4716 wrote to memory of 3528 4716 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 4716 wrote to memory of 3528 4716 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 4716 wrote to memory of 3528 4716 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 4716 wrote to memory of 3528 4716 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 3528 wrote to memory of 2548 3528 04e42207db45792cae0f6d3fd83f0680N.exe icacls.exe PID 3528 wrote to memory of 2548 3528 04e42207db45792cae0f6d3fd83f0680N.exe icacls.exe PID 3528 wrote to memory of 2548 3528 04e42207db45792cae0f6d3fd83f0680N.exe icacls.exe PID 3528 wrote to memory of 4840 3528 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 3528 wrote to memory of 4840 3528 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 3528 wrote to memory of 4840 3528 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 4840 wrote to memory of 4964 4840 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 4840 wrote to memory of 4964 4840 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 4840 wrote to memory of 4964 4840 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 4840 wrote to memory of 4964 4840 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 4840 wrote to memory of 4964 4840 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 4840 wrote to memory of 4964 4840 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 4840 wrote to memory of 4964 4840 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 4840 wrote to memory of 4964 4840 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 4840 wrote to memory of 4964 4840 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe PID 4840 wrote to memory of 4964 4840 04e42207db45792cae0f6d3fd83f0680N.exe 04e42207db45792cae0f6d3fd83f0680N.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe"C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4716 -
C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe"C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.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:3528 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\75948559-0ffb-401d-9f4b-eb3d5bc23011" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:2548 -
C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe"C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4840 -
C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe"C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
PID:4964 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4964 -s 5685⤵
- Program crash
PID:4488
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4964 -ip 49641⤵PID:3844
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\75948559-0ffb-401d-9f4b-eb3d5bc23011\04e42207db45792cae0f6d3fd83f0680N.exe
Filesize801KB
MD504e42207db45792cae0f6d3fd83f0680
SHA1cb17f3a1bb57541204afd27313b390e5ead5096c
SHA256b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9
SHA512b81da4e8961bc8c25e6832db5c1227cb253e178e6c5a4db0725ed073639d944b8d8012865ace42b2781b3f09b082e44a8a19c2ee326a173acb8757caebacbbf7