Analysis
- max time kernel
149s - max time network
143s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
09/05/2026, 03:33
Behavioral task
behavioral1
Sample
bc5d4c7bccf0b5ecac3f050efe1eaa45c162df2bd4aa4e81ce6a43935d24db63.exe
Resource
win10v2004-20260130-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target bc5d4c7bccf0b5ecac3f050efe1eaa45c162df2bd4aa4e81ce6a43935d24db63.exe
- Size 830KB
- Sample260509-d4drcaat21
- SHA256 bc5d4c7bccf0b5ecac3f050efe1eaa45c162df2bd4aa4e81ce6a43935d24db63
- MD5 b5b504dc986ff0d86d75ac7209458ffb
- SHA1 811945855d691847dbfd28d23cb6e4cc4db367a8
- SHA512 ec2927bf3adf61bf49591e4024cf375f5a3c7176af3ac3640368421743616b1d257ff84bcccab5627fb486a0b3478f78fbdb40aef32d72780d784c84ba008e58
- SSDEEP 12288:9SvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/Lik8CQ3K:cvO2xJKRw2kOkx2LFRvcUQPK
- TLSH T131055A31E641C03AD0A74575C6FA4BBFE964BD25131165CBA3C43A262FB36D2BA3170E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 2404 877c01f6 - 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 1 114.114.114.114 2808 bc5d4c7bccf0b5ecac3f050efe1eaa45c162df2bd4aa4e81ce6a43935d24db63.exe Destination IP 2 223.5.5.5 2808 bc5d4c7bccf0b5ecac3f050efe1eaa45c162df2bd4aa4e81ce6a43935d24db63.exe Destination IP 9 114.114.114.114 2808 bc5d4c7bccf0b5ecac3f050efe1eaa45c162df2bd4aa4e81ce6a43935d24db63.exe Destination IP 10 223.5.5.5 2808 bc5d4c7bccf0b5ecac3f050efe1eaa45c162df2bd4aa4e81ce6a43935d24db63.exe - Drops file in System32 directory 13 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 877c01f6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 877c01f6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 877c01f6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 877c01f6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 877c01f6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 877c01f6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 877c01f6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 877c01f6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 877c01f6 File created C:\Windows\SysWOW64\877c01f6 bc5d4c7bccf0b5ecac3f050efe1eaa45c162df2bd4aa4e81ce6a43935d24db63.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 877c01f6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 877c01f6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 877c01f6 -
resource yara_rule behavioral2/memory/2808-0-0x0000000000660000-0x00000000006EC000-memory.dmp upx behavioral2/files/0x000900000002a1a1-3.dat upx behavioral2/memory/2404-4-0x0000000000590000-0x000000000061C000-memory.dmp upx behavioral2/memory/2808-12-0x0000000000660000-0x00000000006EC000-memory.dmp upx behavioral2/memory/2404-13-0x0000000000590000-0x000000000061C000-memory.dmp upx behavioral2/memory/2404-21-0x0000000000590000-0x000000000061C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\292848 877c01f6 File opened for modification C:\Windows\3012f0 bc5d4c7bccf0b5ecac3f050efe1eaa45c162df2bd4aa4e81ce6a43935d24db63.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 bc5d4c7bccf0b5ecac3f050efe1eaa45c162df2bd4aa4e81ce6a43935d24db63.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 877c01f6 - 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:" 877c01f6 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 877c01f6 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix 877c01f6 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 877c01f6 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 877c01f6 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 877c01f6 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 877c01f6 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 877c01f6 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 877c01f6 - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 2404 877c01f6 2404 877c01f6 2404 877c01f6 2404 877c01f6 2404 877c01f6 2404 877c01f6 2404 877c01f6 2404 877c01f6 2808 bc5d4c7bccf0b5ecac3f050efe1eaa45c162df2bd4aa4e81ce6a43935d24db63.exe 2808 bc5d4c7bccf0b5ecac3f050efe1eaa45c162df2bd4aa4e81ce6a43935d24db63.exe 2808 bc5d4c7bccf0b5ecac3f050efe1eaa45c162df2bd4aa4e81ce6a43935d24db63.exe 2808 bc5d4c7bccf0b5ecac3f050efe1eaa45c162df2bd4aa4e81ce6a43935d24db63.exe 2808 bc5d4c7bccf0b5ecac3f050efe1eaa45c162df2bd4aa4e81ce6a43935d24db63.exe 2808 bc5d4c7bccf0b5ecac3f050efe1eaa45c162df2bd4aa4e81ce6a43935d24db63.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 2808 bc5d4c7bccf0b5ecac3f050efe1eaa45c162df2bd4aa4e81ce6a43935d24db63.exe Token: SeTcbPrivilege 2808 bc5d4c7bccf0b5ecac3f050efe1eaa45c162df2bd4aa4e81ce6a43935d24db63.exe Token: SeDebugPrivilege 2404 877c01f6 Token: SeTcbPrivilege 2404 877c01f6
Processes
-
C:\Users\Admin\AppData\Local\Temp\bc5d4c7bccf0b5ecac3f050efe1eaa45c162df2bd4aa4e81ce6a43935d24db63.exe"C:\Users\Admin\AppData\Local\Temp\bc5d4c7bccf0b5ecac3f050efe1eaa45c162df2bd4aa4e81ce6a43935d24db63.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:2808
-
C:\Windows\Syswow64\877c01f6C:\Windows\Syswow64\877c01f61⤵
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2404
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Windows\SysWOW64\877c01f6
- Size 830KB
- SHA256 2ced9d57e90ef5d498cdd54b496c9cba7f7a5c1584ab1719d8bc647c3dc5be5d
- MD5 0504b2e80cd8a353177be6356c468e5c
- SHA1 68b3ffc866028642b6c7e020a307e8ab76275938
- SHA512 bd18708b09663e6c1c0bc7a41064bf98875b36c7047e0cde5fe3694e28c096d423a36859448cbb8b069df7779b7fb5049d45d60c8a3d55c2d118d30b29671c84
- SSDEEP 12288:OSvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/Lik8CQ3K:tvO2xJKRw2kOkx2LFRvcUQPK
- TLSH T1D8055A31E641C03AD0A74575C6FA4BBFE964BD25131165CBA3C43A262FB36D2BA3170E
- MD5 SHA1 SHA512 SSDEEP TLSH