Analysis
- max time kernel
148s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260710-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
09/08/2026, 02:48
Behavioral task
behavioral1
Sample
a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe
- Size 560KB
- Sample260809-dat68ssxaz
- SHA256 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c
- MD5 a73eb0ccd8d4fd22f94a2c71442fc272
- SHA1 030164aa47505b824cc4309ca8224efcc6e664ab
- SHA512 2203ca2a73425805f0c707c4fd2c04e6a6d3fee9576e316a504a42ae1cc48e900e0984b235811b6add06844277033d191d2c3801bdd0651a947c238107f78563
- SSDEEP 6144:66UE71cqQEoMr5C2iKLJChYSvL+8xPFxirGcEOkCybEaQRXr9HNdvOa+y8K:6O7OqQs42iKFChYSvL+8AsOkx2LIa+y
- TLSH T1D5C46C26B6A0D076C4B79574C4A28BA6FFB1742227244BCFA39047561F637E2BE3530D
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 5420 8c72e508 - 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 1 114.114.114.114 860 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe Destination IP 4 223.5.5.5 860 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe Destination IP 18 114.114.114.114 860 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe Destination IP 19 223.5.5.5 860 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe - Drops file in System32 directory 15 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 8c72e508 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 8c72e508 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 8c72e508 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 8c72e508 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 8c72e508 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 8c72e508 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 8c72e508 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 8c72e508 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 8c72e508 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 8c72e508 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 8c72e508 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 8c72e508 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 8c72e508 File created C:\Windows\SysWOW64\8c72e508 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 8c72e508 -
resource yara_rule behavioral2/memory/860-0-0x0000000000E20000-0x0000000000EAC000-memory.dmp upx behavioral2/files/0x000b000000019caa-2.dat upx behavioral2/memory/5420-3-0x0000000000620000-0x00000000006AC000-memory.dmp upx behavioral2/memory/860-10-0x0000000000E20000-0x0000000000EAC000-memory.dmp upx behavioral2/memory/5420-11-0x0000000000620000-0x00000000006AC000-memory.dmp upx behavioral2/memory/5420-30-0x0000000000620000-0x00000000006AC000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\5ccad8 8c72e508 File opened for modification C:\Windows\eb938 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.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 8c72e508 Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe - 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 8c72e508 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 8c72e508 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 8c72e508 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 8c72e508 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 8c72e508 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 8c72e508 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 8c72e508 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 8c72e508 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 8c72e508 - Suspicious behavior: EnumeratesProcesses 22 IoCs
pid Process 5420 8c72e508 5420 8c72e508 5420 8c72e508 5420 8c72e508 5420 8c72e508 5420 8c72e508 5420 8c72e508 5420 8c72e508 860 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe 860 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe 860 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe 860 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe 860 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe 860 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe 860 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe 860 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe 860 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe 860 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe 860 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe 860 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe 860 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe 860 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 860 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe Token: SeTcbPrivilege 860 a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe Token: SeDebugPrivilege 5420 8c72e508 Token: SeTcbPrivilege 5420 8c72e508
Processes
-
C:\Users\Admin\AppData\Local\Temp\a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.exe"C:\Users\Admin\AppData\Local\Temp\a77758890e038e4ef441949ddd511523bd63c0c7ebbd8c3e845f3231caddbc5c.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:860
-
C:\Windows\Syswow64\8c72e508C:\Windows\Syswow64\8c72e5081⤵
- 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:5420
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\8c72e508
- Size 560KB
- SHA256 c84f00ed26407e3d54c34b46dfff65264103ddbff173acd24a3e76d32a00abd5
- MD5 3d74245ac0291ea58c1bbd6e40f7a8de
- SHA1 a34caaf0bd4a1d8623cf6cbc41833383c8efb039
- SHA512 ec9ca48955e8da6fc89606bebda8619aafbe2e298339ec8953ef96bcb062593d09529a6cf92340d54e8d6840fa46ab36160b786f3212d8ea952faa829bcc8e26
- SSDEEP 6144:w6UE71cqQEoMr5C2iKLJChYSvL+8xPFxirGcEOkCybEaQRXr9HNdvOa+y8K:wO7OqQs42iKFChYSvL+8AsOkx2LIa+y
- TLSH T158C46C26B6A0D076C4B79574C4A28BA6FFB1742227244BCFA39047561F637E2BE3530D
- MD5 SHA1 SHA512 SSDEEP TLSH