Analysis
- max time kernel
149s - max time network
152s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
27/05/2026, 17:17
Behavioral task
behavioral1
Sample
09fb360b75c80f4dd96a004c3f5b12b6c37347bd58ef892ccc63d056e08e68a6.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target 09fb360b75c80f4dd96a004c3f5b12b6c37347bd58ef892ccc63d056e08e68a6.exe
- Size 560KB
- Sample260527-vt7p4sf14t
- SHA256 09fb360b75c80f4dd96a004c3f5b12b6c37347bd58ef892ccc63d056e08e68a6
- MD5 9ca2c92c519af6635e13ae0ff2d7116a
- SHA1 a5be4163e301078ca3c5aa8f64f4b7542993a8e9
- SHA512 4e2d95819e0654fcf95094ed3ecb4bb785eb3e9af84d186233e0c0b83f6b86986792ea5f81a9742ca8d66836b1ab2dd38d188706ac949fc617ae8f1da4dd4065
- SSDEEP 6144:KWVrC1c2oonALgPLj7vf1LKlyIFVirGcEOkCybEaQRuy8K:KkCO2zVPX7vf1LKlIsOkxHy
- TLSH T1BEC47C29B690D076C4779574C4A187AAFAB1B432372449CFB3D00B5A1F237E2BA7530E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 1100 bc77cb1f - 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 1448 09fb360b75c80f4dd96a004c3f5b12b6c37347bd58ef892ccc63d056e08e68a6.exe Destination IP 2 223.5.5.5 1448 09fb360b75c80f4dd96a004c3f5b12b6c37347bd58ef892ccc63d056e08e68a6.exe Destination IP 18 114.114.114.114 1448 09fb360b75c80f4dd96a004c3f5b12b6c37347bd58ef892ccc63d056e08e68a6.exe Destination IP 19 223.5.5.5 1448 09fb360b75c80f4dd96a004c3f5b12b6c37347bd58ef892ccc63d056e08e68a6.exe - Drops file in System32 directory 15 IoCs
description ioc Process File created C:\Windows\SysWOW64\bc77cb1f 09fb360b75c80f4dd96a004c3f5b12b6c37347bd58ef892ccc63d056e08e68a6.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 bc77cb1f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache bc77cb1f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 bc77cb1f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 bc77cb1f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft bc77cb1f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData bc77cb1f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content bc77cb1f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 bc77cb1f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE bc77cb1f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 bc77cb1f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 bc77cb1f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies bc77cb1f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 bc77cb1f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 bc77cb1f -
resource yara_rule behavioral2/memory/1448-0-0x0000000000DF0000-0x0000000000E7C000-memory.dmp upx behavioral2/files/0x000b00000002ace1-2.dat upx behavioral2/memory/1100-4-0x0000000000CC0000-0x0000000000D4C000-memory.dmp upx behavioral2/memory/1448-18-0x0000000000DF0000-0x0000000000E7C000-memory.dmp upx behavioral2/memory/1100-19-0x0000000000CC0000-0x0000000000D4C000-memory.dmp upx behavioral2/memory/1100-30-0x0000000000CC0000-0x0000000000D4C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\12d518 bc77cb1f File opened for modification C:\Windows\18ca50 09fb360b75c80f4dd96a004c3f5b12b6c37347bd58ef892ccc63d056e08e68a6.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 09fb360b75c80f4dd96a004c3f5b12b6c37347bd58ef892ccc63d056e08e68a6.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language bc77cb1f - 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\Content\CachePrefix bc77cb1f Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" bc77cb1f Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ bc77cb1f Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" bc77cb1f Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" bc77cb1f Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" bc77cb1f Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" bc77cb1f Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" bc77cb1f Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing bc77cb1f - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 1100 bc77cb1f 1100 bc77cb1f 1100 bc77cb1f 1100 bc77cb1f 1100 bc77cb1f 1100 bc77cb1f 1100 bc77cb1f 1100 bc77cb1f 1448 09fb360b75c80f4dd96a004c3f5b12b6c37347bd58ef892ccc63d056e08e68a6.exe 1448 09fb360b75c80f4dd96a004c3f5b12b6c37347bd58ef892ccc63d056e08e68a6.exe 1448 09fb360b75c80f4dd96a004c3f5b12b6c37347bd58ef892ccc63d056e08e68a6.exe 1448 09fb360b75c80f4dd96a004c3f5b12b6c37347bd58ef892ccc63d056e08e68a6.exe 1448 09fb360b75c80f4dd96a004c3f5b12b6c37347bd58ef892ccc63d056e08e68a6.exe 1448 09fb360b75c80f4dd96a004c3f5b12b6c37347bd58ef892ccc63d056e08e68a6.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 1448 09fb360b75c80f4dd96a004c3f5b12b6c37347bd58ef892ccc63d056e08e68a6.exe Token: SeTcbPrivilege 1448 09fb360b75c80f4dd96a004c3f5b12b6c37347bd58ef892ccc63d056e08e68a6.exe Token: SeDebugPrivilege 1100 bc77cb1f Token: SeTcbPrivilege 1100 bc77cb1f
Processes
-
C:\Users\Admin\AppData\Local\Temp\09fb360b75c80f4dd96a004c3f5b12b6c37347bd58ef892ccc63d056e08e68a6.exe"C:\Users\Admin\AppData\Local\Temp\09fb360b75c80f4dd96a004c3f5b12b6c37347bd58ef892ccc63d056e08e68a6.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:1448
-
C:\Windows\Syswow64\bc77cb1fC:\Windows\Syswow64\bc77cb1f1⤵
- 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:1100
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\bc77cb1f
- Size 560KB
- SHA256 62af1ea84f1cc57f1bf07c568e8f6aec48b7ca64d35381babf3fc9dd8c452db0
- MD5 af649ac218ff4b1f697ac16babe981ad
- SHA1 efc8f2b40117004351ec9ac129f2e28fa181cf96
- SHA512 318cad3f782885acd51cfe6d2078bc180ece0b84e3fdf081e4f0a685182393f1c34c9e40828641caf112ac16431e7b30e328f4c40e2f42a50e86698a54fc8cf2
- SSDEEP 6144:0WVrC1c2oonALgPLj7vf1LKlyIFVirGcEOkCybEaQRuy8K:0kCO2zVPX7vf1LKlIsOkxHy
- TLSH T12EC47C29B690D076C4779574C4A187AAFAB1B432372449CFB3D00B5A1F237E2BA7530E
- MD5 SHA1 SHA512 SSDEEP TLSH