Analysis
- max time kernel
149s - 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
09/08/2026, 21:53
Behavioral task
behavioral1
Sample
305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe
- Size 1022KB
- Sample260809-1rn3waek2v
- SHA256 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010
- MD5 5a257ffc05c89d67617ee621e0683c49
- SHA1 a4fa81ab6b8dce9a77c25ecbbdf7497d388ae254
- SHA512 c0f316f5a6ceb041063634448755fcfe31d2a4a0f7d3888b5a5a722d2312cd21019858363ae4cfb66537e580faa2b6f9d2858bf83450a89b27be1c57575485e3
- SSDEEP 12288:cSvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/LikGU5rCOTeidT:vvO2xJKRw2kOkx2LFRvcU6UQOJdT
- TLSH T1B3256B31A681C036D5B34571C6FA4BBBA9747D21531165CBA3C47A2A2FB37D2BA3130E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 5312 a73bd4dd - 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 4532 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe Destination IP 2 223.5.5.5 4532 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe Destination IP 15 114.114.114.114 4532 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe Destination IP 16 223.5.5.5 4532 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe - Drops file in System32 directory 17 IoCs
description ioc Process File created C:\Windows\SysWOW64\a73bd4dd 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 a73bd4dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 a73bd4dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 a73bd4dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies a73bd4dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft a73bd4dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 a73bd4dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 a73bd4dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 a73bd4dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache a73bd4dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content a73bd4dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 a73bd4dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 a73bd4dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE a73bd4dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData a73bd4dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3EC845F33427F1C99AF855BE8930371C a73bd4dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3EC845F33427F1C99AF855BE8930371C a73bd4dd -
resource yara_rule behavioral2/memory/4532-0-0x0000000000960000-0x00000000009EC000-memory.dmp upx behavioral2/files/0x000600000001b85f-2.dat upx behavioral2/memory/5312-3-0x0000000000530000-0x00000000005BC000-memory.dmp upx behavioral2/memory/4532-15-0x0000000000960000-0x00000000009EC000-memory.dmp upx behavioral2/memory/5312-16-0x0000000000530000-0x00000000005BC000-memory.dmp upx behavioral2/memory/5312-32-0x0000000000530000-0x00000000005BC000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\5af180 a73bd4dd File opened for modification C:\Windows\4d96e8 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.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 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a73bd4dd - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" a73bd4dd Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" a73bd4dd Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" a73bd4dd Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" a73bd4dd Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ a73bd4dd Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" a73bd4dd Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" a73bd4dd Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing a73bd4dd Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix a73bd4dd - Suspicious behavior: EnumeratesProcesses 22 IoCs
pid Process 5312 a73bd4dd 5312 a73bd4dd 5312 a73bd4dd 5312 a73bd4dd 5312 a73bd4dd 5312 a73bd4dd 5312 a73bd4dd 5312 a73bd4dd 4532 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe 4532 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe 4532 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe 4532 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe 4532 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe 4532 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe 4532 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe 4532 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe 4532 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe 4532 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe 4532 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe 4532 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe 4532 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe 4532 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4532 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe Token: SeTcbPrivilege 4532 305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe Token: SeDebugPrivilege 5312 a73bd4dd Token: SeTcbPrivilege 5312 a73bd4dd
Processes
-
C:\Users\Admin\AppData\Local\Temp\305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.exe"C:\Users\Admin\AppData\Local\Temp\305fc01019c70fb4f978a723dbc21b836c644521aaf3cb1fcfacaa558ddf8010.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:4532
-
C:\Windows\Syswow64\a73bd4ddC:\Windows\Syswow64\a73bd4dd1⤵
- 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:5312
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\a73bd4dd
- Size 1022KB
- SHA256 36f8b1134e5b0e1d35e794eb71a54859f758bdb379ab6e2b74334a17c42f4bbc
- MD5 1ad33fb98f34ed815dd7087e1f9da80b
- SHA1 88e24903a311a238a673a67cb0ae8b088cd0f014
- SHA512 e96f108ba57484cf9b09b5ca5b3245682e3f7fbd7a27c87f60f2e8f9daf9ab074e7286c32aac50ee68e15a3172233df0e159247bc77b78565865b4e2854833e6
- SSDEEP 12288:uSvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/LikGU5rCOTeidT:NvO2xJKRw2kOkx2LFRvcU6UQOJdT
- TLSH T197256B31A681C036D5B34571C6FA4BBBA9747D21531165CBA3C47A2A2FB37D2BA3130E
- MD5 SHA1 SHA512 SSDEEP TLSH