Analysis
- max time kernel
149s - max time network
149s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
07/05/2026, 19:50
Behavioral task
behavioral1
Sample
bb2ac229504ad5ee90e1e58030ba12c115fe1d72db416c484f935aa951f41590.exe
Resource
win10v2004-20260130-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target bb2ac229504ad5ee90e1e58030ba12c115fe1d72db416c484f935aa951f41590.exe
- Size 640KB
- Sample260507-ykhamsdw2n
- SHA256 bb2ac229504ad5ee90e1e58030ba12c115fe1d72db416c484f935aa951f41590
- MD5 0b9dc34303782a3b7a94a8ce33e9660c
- SHA1 aff0c52d342bd6794453657ec1ec34409127623a
- SHA512 2cd00fa8197e8cf907aba7ce81df60a056eb6f76c2f4580a84196dc8d951ccb866cd792c8ddfd953a30f4f5827320ee227abf8890a83073ab6d8f09b212e3216
- SSDEEP 6144:ccTgav1cdCTuoPbgwmOLJvKRwLSFXdFwirGcEOkCybEaQRuy8KU5Rc:cSvO2x9mONvKRwLSFtsOkxHya5+
- TLSH T1CED45B35A6808036C0B74631C6F64BAAF9B5BC25631195CFA384376A1F737D2BA3570E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 5152 64726b19 - 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 5072 bb2ac229504ad5ee90e1e58030ba12c115fe1d72db416c484f935aa951f41590.exe Destination IP 2 223.5.5.5 5072 bb2ac229504ad5ee90e1e58030ba12c115fe1d72db416c484f935aa951f41590.exe Destination IP 9 114.114.114.114 5072 bb2ac229504ad5ee90e1e58030ba12c115fe1d72db416c484f935aa951f41590.exe Destination IP 10 223.5.5.5 5072 bb2ac229504ad5ee90e1e58030ba12c115fe1d72db416c484f935aa951f41590.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\3EC845F33427F1C99AF855BE8930371C 64726b19 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3EC845F33427F1C99AF855BE8930371C 64726b19 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 64726b19 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 64726b19 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 64726b19 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 64726b19 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 64726b19 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 64726b19 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 64726b19 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 64726b19 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 64726b19 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 64726b19 File created C:\Windows\SysWOW64\64726b19 bb2ac229504ad5ee90e1e58030ba12c115fe1d72db416c484f935aa951f41590.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 64726b19 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 64726b19 -
resource yara_rule behavioral2/memory/5072-0-0x00000000003F0000-0x000000000047C000-memory.dmp upx behavioral2/files/0x002800000002b184-2.dat upx behavioral2/memory/5152-4-0x0000000000880000-0x000000000090C000-memory.dmp upx behavioral2/memory/5072-10-0x00000000003F0000-0x000000000047C000-memory.dmp upx behavioral2/memory/5152-11-0x0000000000880000-0x000000000090C000-memory.dmp upx behavioral2/memory/5152-27-0x0000000000880000-0x000000000090C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\583440 64726b19 File opened for modification C:\Windows\56d5a0 bb2ac229504ad5ee90e1e58030ba12c115fe1d72db416c484f935aa951f41590.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 64726b19 Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language bb2ac229504ad5ee90e1e58030ba12c115fe1d72db416c484f935aa951f41590.exe - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 64726b19 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix 64726b19 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 64726b19 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 64726b19 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 64726b19 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 64726b19 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 64726b19 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 64726b19 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 64726b19 - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 5152 64726b19 5152 64726b19 5152 64726b19 5152 64726b19 5152 64726b19 5152 64726b19 5152 64726b19 5152 64726b19 5072 bb2ac229504ad5ee90e1e58030ba12c115fe1d72db416c484f935aa951f41590.exe 5072 bb2ac229504ad5ee90e1e58030ba12c115fe1d72db416c484f935aa951f41590.exe 5072 bb2ac229504ad5ee90e1e58030ba12c115fe1d72db416c484f935aa951f41590.exe 5072 bb2ac229504ad5ee90e1e58030ba12c115fe1d72db416c484f935aa951f41590.exe 5072 bb2ac229504ad5ee90e1e58030ba12c115fe1d72db416c484f935aa951f41590.exe 5072 bb2ac229504ad5ee90e1e58030ba12c115fe1d72db416c484f935aa951f41590.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 5072 bb2ac229504ad5ee90e1e58030ba12c115fe1d72db416c484f935aa951f41590.exe Token: SeTcbPrivilege 5072 bb2ac229504ad5ee90e1e58030ba12c115fe1d72db416c484f935aa951f41590.exe Token: SeDebugPrivilege 5152 64726b19 Token: SeTcbPrivilege 5152 64726b19
Processes
-
C:\Users\Admin\AppData\Local\Temp\bb2ac229504ad5ee90e1e58030ba12c115fe1d72db416c484f935aa951f41590.exe"C:\Users\Admin\AppData\Local\Temp\bb2ac229504ad5ee90e1e58030ba12c115fe1d72db416c484f935aa951f41590.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:5072
-
C:\Windows\Syswow64\64726b19C:\Windows\Syswow64\64726b191⤵
- 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:5152
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\64726b19
- Size 640KB
- SHA256 c94afcce474136dae91aea015730f84b910a0eda2e8f78cf799c26169cc05d4b
- MD5 817bdb3ac22ef598502401a25792f5e6
- SHA1 902484bdb71570ad0b203412d34cfed7946f7378
- SHA512 36a7a9ca82c5b4dfe77ff80eef413ee98646c4597cd7ebeab8bb249e59a9101f3852c107e4ff7c9a003616e5a130379507543ef9de65b44cd3aa66ca89c9f59c
- SSDEEP 6144:4cTgav1cdCTuoPbgwmOLJvKRwLSFXdFwirGcEOkCybEaQRuy8KU5Rc:4SvO2x9mONvKRwLSFtsOkxHya5+
- TLSH T1BBD45B35A6808036C0B74631C6F64BAAF9B5BC21631195CFA384376A1F737D2BA3570E
- MD5 SHA1 SHA512 SSDEEP TLSH