Analysis
- max time kernel
148s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
02/08/2026, 10:19
Behavioral task
behavioral1
Sample
d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe
- Size 576KB
- Sample260802-mcwmhsgf33
- SHA256 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3
- MD5 c376f3253a9eafaad9ef074301e8c7ab
- SHA1 638d0bc3e78c7b71761f420a767d4d42e967b377
- SHA512 bc10ce967e9c99a03f1d7ab03060af50ed6f97d59de8a602c1f54f4d46ba9c57b83217a3deaab391f1697212da3f090bb14722097bd8a0290ae4253a6e7f7e31
- SSDEEP 6144:+cTgav1cdCTuoPbgwmOLJvKRwLSFXdFwirGcEOkCybEaQRXr9HNdvOa+y8K/:+SvO2x9mONvKRwLSFtsOkx2LIa+yx
- TLSH T1FDC46D26B6908072C4779578C4A257AAFBB1BC2127204ACFA390775A1F737D2BE3570D
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 4432 8ed31c36 - 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 5 223.5.5.5 4216 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe Destination IP 13 114.114.114.114 4216 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe Destination IP 14 223.5.5.5 4216 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe Destination IP 3 114.114.114.114 4216 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe - Drops file in System32 directory 13 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 8ed31c36 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 8ed31c36 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 8ed31c36 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 8ed31c36 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 8ed31c36 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 8ed31c36 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 8ed31c36 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 8ed31c36 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 8ed31c36 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 8ed31c36 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 8ed31c36 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 8ed31c36 File created C:\Windows\SysWOW64\8ed31c36 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe -
resource yara_rule behavioral2/memory/4216-0-0x0000000000060000-0x00000000000EC000-memory.dmp upx behavioral2/files/0x0011000000019cbf-2.dat upx behavioral2/memory/4432-4-0x00000000001D0000-0x000000000025C000-memory.dmp upx behavioral2/memory/4216-10-0x0000000000060000-0x00000000000EC000-memory.dmp upx behavioral2/memory/4432-11-0x00000000001D0000-0x000000000025C000-memory.dmp upx behavioral2/memory/4432-34-0x00000000001D0000-0x000000000025C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\4be0a0 8ed31c36 File opened for modification C:\Windows\482df0 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.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 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 8ed31c36 - 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 8ed31c36 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 8ed31c36 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 8ed31c36 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 8ed31c36 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 8ed31c36 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 8ed31c36 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 8ed31c36 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 8ed31c36 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 8ed31c36 - Suspicious behavior: EnumeratesProcesses 22 IoCs
pid Process 4432 8ed31c36 4432 8ed31c36 4432 8ed31c36 4432 8ed31c36 4432 8ed31c36 4432 8ed31c36 4432 8ed31c36 4432 8ed31c36 4216 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe 4216 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe 4216 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe 4216 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe 4216 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe 4216 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe 4216 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe 4216 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe 4216 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe 4216 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe 4216 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe 4216 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe 4216 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe 4216 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4216 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe Token: SeTcbPrivilege 4216 d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe Token: SeDebugPrivilege 4432 8ed31c36 Token: SeTcbPrivilege 4432 8ed31c36
Processes
-
C:\Users\Admin\AppData\Local\Temp\d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.exe"C:\Users\Admin\AppData\Local\Temp\d99fb8c4bb6d223127402083467b8fca7de2cc252140a7521fc2a74dd87dd3b3.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:4216
-
C:\Windows\Syswow64\8ed31c36C:\Windows\Syswow64\8ed31c361⤵
- 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:4432
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\8ed31c36
- Size 576KB
- SHA256 82487649c61e68152ea15ccf94ec9229ae5a1a9397eb5110d4c6f01d84e98691
- MD5 5364dd50ae64b3bcd4a51ce040080f18
- SHA1 e0385e2ff5e89efe9f3a018036397bceff5ec577
- SHA512 dc87dc93408468194364d64fe75767ca7e27b8a3396d8dcffb18c2dd34991eb6f50bf4f19e73ec9d04caebd730b879d40144d31647429267d87ed1aef983f421
- SSDEEP 6144:ycTgav1cdCTuoPbgwmOLJvKRwLSFXdFwirGcEOkCybEaQRXr9HNdvOa+y8K/:ySvO2x9mONvKRwLSFtsOkx2LIa+yx
- TLSH T173C46D26B6908072C4779578C4A257AAFBB1BC2127204ACFA390775A1F737D2BE3570D
- MD5 SHA1 SHA512 SSDEEP TLSH