Analysis
- max time kernel
149s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
09/08/2026, 23:07
Behavioral task
behavioral1
Sample
8f7e20b21319c5ea731becf77b8858a3a173f4c2c2d82bea09b1b2abd60ab8ac.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target 8f7e20b21319c5ea731becf77b8858a3a173f4c2c2d82bea09b1b2abd60ab8ac.exe
- Size 766KB
- Sample260809-2383vser5z
- SHA256 8f7e20b21319c5ea731becf77b8858a3a173f4c2c2d82bea09b1b2abd60ab8ac
- MD5 88bc38ed6e7935329926d3a9ba951cb3
- SHA1 dbf720eb7b6bbf8f20e0743f2e614ec9438716f2
- SHA512 1af188206412dabdec503bede089d73291deb744760b484f1a6aa9e9dcc570c9ecd27a1adba0a6f5fef4f3600ca110498a719ecf46b5e2862e8bd4f076a6bb0e
- SSDEEP 12288:nSvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/Liw:SvO2xJKRw2kOkx2LFRvcUV
- TLSH T11CF45A31E241C03AD0A74576C6FA0BAFE564BD25531155CBA3C43A6A2FB36D2BE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 4412 3b8e13c - Unexpected DNS network traffic destination 4 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
description flow ioc pid Process Destination IP 3 114.114.114.114 5000 8f7e20b21319c5ea731becf77b8858a3a173f4c2c2d82bea09b1b2abd60ab8ac.exe Destination IP 4 223.5.5.5 5000 8f7e20b21319c5ea731becf77b8858a3a173f4c2c2d82bea09b1b2abd60ab8ac.exe Destination IP 36 114.114.114.114 5000 8f7e20b21319c5ea731becf77b8858a3a173f4c2c2d82bea09b1b2abd60ab8ac.exe Destination IP 39 223.5.5.5 5000 8f7e20b21319c5ea731becf77b8858a3a173f4c2c2d82bea09b1b2abd60ab8ac.exe - Drops file in System32 directory 15 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 3b8e13c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 3b8e13c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 3b8e13c File created C:\Windows\SysWOW64\3b8e13c 8f7e20b21319c5ea731becf77b8858a3a173f4c2c2d82bea09b1b2abd60ab8ac.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\AAD646CB44373074ADE741C38400E7E1 3b8e13c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 3b8e13c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 3b8e13c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 3b8e13c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 3b8e13c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 3b8e13c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 3b8e13c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\AAD646CB44373074ADE741C38400E7E1 3b8e13c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 3b8e13c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 3b8e13c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 3b8e13c -
resource yara_rule behavioral1/memory/5000-0-0x0000000000460000-0x00000000004EC000-memory.dmp upx behavioral1/memory/4412-4-0x0000000000FC0000-0x000000000104C000-memory.dmp upx behavioral1/files/0x0012000000024381-3.dat upx behavioral1/memory/5000-12-0x0000000000460000-0x00000000004EC000-memory.dmp upx behavioral1/memory/4412-13-0x0000000000FC0000-0x000000000104C000-memory.dmp upx behavioral1/memory/4412-32-0x0000000000FC0000-0x000000000104C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\4b88f8 3b8e13c File opened for modification C:\Windows\559a10 8f7e20b21319c5ea731becf77b8858a3a173f4c2c2d82bea09b1b2abd60ab8ac.exe - System Location Discovery: System Language Discovery 1 TTPs 2 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 8f7e20b21319c5ea731becf77b8858a3a173f4c2c2d82bea09b1b2abd60ab8ac.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 3b8e13c - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 3b8e13c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 3b8e13c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 3b8e13c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 3b8e13c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix 3b8e13c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 3b8e13c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 3b8e13c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 3b8e13c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 3b8e13c - Modifies system certificate store 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\1F24C630CDA418EF2069FFAD4FDD5F463A1B69AA 3b8e13c Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\1F24C630CDA418EF2069FFAD4FDD5F463A1B69AA\Blob = 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 3b8e13c - Suspicious behavior: EnumeratesProcesses 18 IoCs
pid Process 4412 3b8e13c 4412 3b8e13c 4412 3b8e13c 4412 3b8e13c 4412 3b8e13c 4412 3b8e13c 4412 3b8e13c 4412 3b8e13c 4412 3b8e13c 4412 3b8e13c 4412 3b8e13c 4412 3b8e13c 5000 8f7e20b21319c5ea731becf77b8858a3a173f4c2c2d82bea09b1b2abd60ab8ac.exe 5000 8f7e20b21319c5ea731becf77b8858a3a173f4c2c2d82bea09b1b2abd60ab8ac.exe 5000 8f7e20b21319c5ea731becf77b8858a3a173f4c2c2d82bea09b1b2abd60ab8ac.exe 5000 8f7e20b21319c5ea731becf77b8858a3a173f4c2c2d82bea09b1b2abd60ab8ac.exe 5000 8f7e20b21319c5ea731becf77b8858a3a173f4c2c2d82bea09b1b2abd60ab8ac.exe 5000 8f7e20b21319c5ea731becf77b8858a3a173f4c2c2d82bea09b1b2abd60ab8ac.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 5000 8f7e20b21319c5ea731becf77b8858a3a173f4c2c2d82bea09b1b2abd60ab8ac.exe Token: SeTcbPrivilege 5000 8f7e20b21319c5ea731becf77b8858a3a173f4c2c2d82bea09b1b2abd60ab8ac.exe Token: SeDebugPrivilege 4412 3b8e13c Token: SeTcbPrivilege 4412 3b8e13c
Processes
-
C:\Users\Admin\AppData\Local\Temp\8f7e20b21319c5ea731becf77b8858a3a173f4c2c2d82bea09b1b2abd60ab8ac.exe"C:\Users\Admin\AppData\Local\Temp\8f7e20b21319c5ea731becf77b8858a3a173f4c2c2d82bea09b1b2abd60ab8ac.exe"1⤵
- Unexpected DNS network traffic destination
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5000
-
C:\Windows\Syswow64\3b8e13cC:\Windows\Syswow64\3b8e13c1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4412
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\3b8e13c
- Size 766KB
- SHA256 9469665200e55ff86b5ffdc146ead6ec161e49efca400a65759d0f7c0bc4888c
- MD5 3b88fb9c3d4863377687fa2898b6d5db
- SHA1 54eec30e10fb24ce37fb06a5d98ee09caf4f9444
- SHA512 d95b4b00626cd191d56a1210adceb1a37fc8e14b724a9d139059fd0233ee9da8bdc4c907a538a416bc31a86a41d70a9387c1bb17826c5b78fbd656f6dba5bc5e
- SSDEEP 12288:ySvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/Liw:ZvO2xJKRw2kOkx2LFRvcUV
- TLSH T19DF45A31E241C03AD0A74576C6FA0BAFE564BD25531155CBA3C43A6A2FB36D2BE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH