Analysis
- max time kernel
145s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
22/07/2026, 19:40
Behavioral task
behavioral1
Sample
3b21f2c41d544f7898c6932eb219a1b6c8cb95f28e409261b3a203a77bac648f.exe
Resource
win10v2004-20260513-en
9 signatures
150 seconds
General
- Target 3b21f2c41d544f7898c6932eb219a1b6c8cb95f28e409261b3a203a77bac648f.exe
- Size 766KB
- Sample260722-yd1hmsgj41
- SHA256 3b21f2c41d544f7898c6932eb219a1b6c8cb95f28e409261b3a203a77bac648f
- MD5 9c68c7f7360ed40352b833b736de7b8e
- SHA1 2e821e055e0c2660f7957f0a119cf42ddbe20be5
- SHA512 a96113c93f6ec5c32769f6770a1556bddea2d68611187c3e31d59d9d1cef5513e658b2088c9a86b297f93d624e5a273cbeb59d6ab2353977a5194bc81c496beb
- SSDEEP 12288:kSvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/Liw:XvO2xJKRw2kOkx2LFRvcUV
- TLSH T1EBF45A31E241C03AD0A74576C6FA0BAFE564BD25531155CBA3C43A6A2FB36D2BE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 4920 1bf1b363 - 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 3 114.114.114.114 4736 3b21f2c41d544f7898c6932eb219a1b6c8cb95f28e409261b3a203a77bac648f.exe Destination IP 4 223.5.5.5 4736 3b21f2c41d544f7898c6932eb219a1b6c8cb95f28e409261b3a203a77bac648f.exe Destination IP 18 114.114.114.114 4736 3b21f2c41d544f7898c6932eb219a1b6c8cb95f28e409261b3a203a77bac648f.exe Destination IP 19 223.5.5.5 4736 3b21f2c41d544f7898c6932eb219a1b6c8cb95f28e409261b3a203a77bac648f.exe - Drops file in System32 directory 5 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 1bf1b363 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 1bf1b363 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 1bf1b363 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 1bf1b363 File created C:\Windows\SysWOW64\1bf1b363 3b21f2c41d544f7898c6932eb219a1b6c8cb95f28e409261b3a203a77bac648f.exe -
resource yara_rule behavioral1/memory/4736-0-0x0000000000B50000-0x0000000000BDC000-memory.dmp upx behavioral1/files/0x000a000000016817-2.dat upx behavioral1/memory/4920-4-0x0000000000EC0000-0x0000000000F4C000-memory.dmp upx behavioral1/memory/4736-10-0x0000000000B50000-0x0000000000BDC000-memory.dmp upx behavioral1/memory/4920-11-0x0000000000EC0000-0x0000000000F4C000-memory.dmp upx behavioral1/memory/4920-22-0x0000000000EC0000-0x0000000000F4C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\543b70 1bf1b363 File opened for modification C:\Windows\511500 3b21f2c41d544f7898c6932eb219a1b6c8cb95f28e409261b3a203a77bac648f.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 3b21f2c41d544f7898c6932eb219a1b6c8cb95f28e409261b3a203a77bac648f.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 1bf1b363 - Modifies data under HKEY_USERS 8 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 1bf1b363 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 1bf1b363 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 1bf1b363 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 1bf1b363 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 1bf1b363 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 1bf1b363 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix 1bf1b363 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 1bf1b363 - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 4920 1bf1b363 4920 1bf1b363 4920 1bf1b363 4920 1bf1b363 4920 1bf1b363 4920 1bf1b363 4920 1bf1b363 4920 1bf1b363 4736 3b21f2c41d544f7898c6932eb219a1b6c8cb95f28e409261b3a203a77bac648f.exe 4736 3b21f2c41d544f7898c6932eb219a1b6c8cb95f28e409261b3a203a77bac648f.exe 4736 3b21f2c41d544f7898c6932eb219a1b6c8cb95f28e409261b3a203a77bac648f.exe 4736 3b21f2c41d544f7898c6932eb219a1b6c8cb95f28e409261b3a203a77bac648f.exe 4736 3b21f2c41d544f7898c6932eb219a1b6c8cb95f28e409261b3a203a77bac648f.exe 4736 3b21f2c41d544f7898c6932eb219a1b6c8cb95f28e409261b3a203a77bac648f.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4736 3b21f2c41d544f7898c6932eb219a1b6c8cb95f28e409261b3a203a77bac648f.exe Token: SeTcbPrivilege 4736 3b21f2c41d544f7898c6932eb219a1b6c8cb95f28e409261b3a203a77bac648f.exe Token: SeDebugPrivilege 4920 1bf1b363 Token: SeTcbPrivilege 4920 1bf1b363
Processes
-
C:\Users\Admin\AppData\Local\Temp\3b21f2c41d544f7898c6932eb219a1b6c8cb95f28e409261b3a203a77bac648f.exe"C:\Users\Admin\AppData\Local\Temp\3b21f2c41d544f7898c6932eb219a1b6c8cb95f28e409261b3a203a77bac648f.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:4736
-
C:\Windows\Syswow64\1bf1b363C:\Windows\Syswow64\1bf1b3631⤵
- 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:4920
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\1bf1b363
- Size 766KB
- SHA256 5fbf26bf82d8db6ea86516450a218df538401090a569b5d4bfeec4721c714b2f
- MD5 98c2899cdacff22d95faf3e1d8ba6878
- SHA1 6f3b5ecd9bf2209dd4814d2d92d70fbb71031f79
- SHA512 11292d11329d7eea0add83b52b4777d310f9f3d61e0c9e452ca6ac43e49db4cafe6ec3a1013d3ac297daf4f9681991a8086755db314abe0d5d0c37d7c60a9c07
- SSDEEP 12288:ZSvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/Liw:gvO2xJKRw2kOkx2LFRvcUV
- TLSH T18EF45A31E241C03AD0A74576C6FA0BAFE564BD25531155CBA3C43A6A2FB36D2BE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH