Analysis
- max time kernel
149s - max time network
144s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
21/04/2026, 00:42
Behavioral task
behavioral1
Sample
8b1caa70b1a50f9fd65734623edfe6400f89a3f183ad81d432fd90c7dffa5602.exe
Resource
win10v2004-20260130-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target 8b1caa70b1a50f9fd65734623edfe6400f89a3f183ad81d432fd90c7dffa5602.exe
- Size 271KB
- Sample260421-a2bmesat7t
- SHA256 8b1caa70b1a50f9fd65734623edfe6400f89a3f183ad81d432fd90c7dffa5602
- MD5 4002b69bd92e19c9f257707b8752cbad
- SHA1 786f40834ba4044373fe1acdad50acf052e35540
- SHA512 0cb6fba901f9274657de39e98c5d153870ea04193a0987c39ec50379b49e04acc20fc19ddbcbf11e29271d58109f18e928209d87c17ae0758571296f68c6a199
- SSDEEP 6144:5l51orRJXlDixHkUXe35rGcEOkCybEaQRXr9HNdvOa:HqXUHkUXe39sOkx2LIa
- TLSH T15844CF5BF27440B6C49AD678C9935A5AFBF1B815872143CF1320C25A1F737E2AE3A325
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 4148 c80571a5 - 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 4660 8b1caa70b1a50f9fd65734623edfe6400f89a3f183ad81d432fd90c7dffa5602.exe Destination IP 2 223.5.5.5 4660 8b1caa70b1a50f9fd65734623edfe6400f89a3f183ad81d432fd90c7dffa5602.exe Destination IP 10 114.114.114.114 4660 8b1caa70b1a50f9fd65734623edfe6400f89a3f183ad81d432fd90c7dffa5602.exe Destination IP 11 223.5.5.5 4660 8b1caa70b1a50f9fd65734623edfe6400f89a3f183ad81d432fd90c7dffa5602.exe - Drops file in System32 directory 17 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 c80571a5 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content c80571a5 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 c80571a5 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 c80571a5 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache c80571a5 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 c80571a5 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 c80571a5 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3EC845F33427F1C99AF855BE8930371C c80571a5 File created C:\Windows\SysWOW64\c80571a5 8b1caa70b1a50f9fd65734623edfe6400f89a3f183ad81d432fd90c7dffa5602.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies c80571a5 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 c80571a5 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 c80571a5 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft c80571a5 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData c80571a5 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3EC845F33427F1C99AF855BE8930371C c80571a5 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 c80571a5 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE c80571a5 -
resource yara_rule behavioral2/memory/4660-0-0x0000000000820000-0x00000000008A9000-memory.dmp upx behavioral2/files/0x002800000002b23d-2.dat upx behavioral2/memory/4148-3-0x0000000000E20000-0x0000000000EA9000-memory.dmp upx behavioral2/memory/4660-15-0x0000000000820000-0x00000000008A9000-memory.dmp upx behavioral2/memory/4148-17-0x0000000000E20000-0x0000000000EA9000-memory.dmp upx behavioral2/memory/4660-38-0x0000000000820000-0x00000000008A9000-memory.dmp upx behavioral2/memory/4148-39-0x0000000000E20000-0x0000000000EA9000-memory.dmp upx behavioral2/memory/4660-42-0x0000000000820000-0x00000000008A9000-memory.dmp upx behavioral2/memory/4148-43-0x0000000000E20000-0x0000000000EA9000-memory.dmp upx behavioral2/memory/4148-44-0x0000000000E20000-0x0000000000EA9000-memory.dmp upx behavioral2/memory/4660-51-0x0000000000820000-0x00000000008A9000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\4fc7e8 8b1caa70b1a50f9fd65734623edfe6400f89a3f183ad81d432fd90c7dffa5602.exe File opened for modification C:\Windows\4703e8 c80571a5 - 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 8b1caa70b1a50f9fd65734623edfe6400f89a3f183ad81d432fd90c7dffa5602.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language c80571a5 - 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 c80571a5 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" c80571a5 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" c80571a5 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ c80571a5 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" c80571a5 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" c80571a5 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing c80571a5 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" c80571a5 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" c80571a5 - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 4148 c80571a5 4148 c80571a5 4148 c80571a5 4148 c80571a5 4148 c80571a5 4148 c80571a5 4148 c80571a5 4148 c80571a5 4660 8b1caa70b1a50f9fd65734623edfe6400f89a3f183ad81d432fd90c7dffa5602.exe 4660 8b1caa70b1a50f9fd65734623edfe6400f89a3f183ad81d432fd90c7dffa5602.exe 4660 8b1caa70b1a50f9fd65734623edfe6400f89a3f183ad81d432fd90c7dffa5602.exe 4660 8b1caa70b1a50f9fd65734623edfe6400f89a3f183ad81d432fd90c7dffa5602.exe 4660 8b1caa70b1a50f9fd65734623edfe6400f89a3f183ad81d432fd90c7dffa5602.exe 4660 8b1caa70b1a50f9fd65734623edfe6400f89a3f183ad81d432fd90c7dffa5602.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4660 8b1caa70b1a50f9fd65734623edfe6400f89a3f183ad81d432fd90c7dffa5602.exe Token: SeTcbPrivilege 4660 8b1caa70b1a50f9fd65734623edfe6400f89a3f183ad81d432fd90c7dffa5602.exe Token: SeDebugPrivilege 4148 c80571a5 Token: SeTcbPrivilege 4148 c80571a5
Processes
-
C:\Users\Admin\AppData\Local\Temp\8b1caa70b1a50f9fd65734623edfe6400f89a3f183ad81d432fd90c7dffa5602.exe"C:\Users\Admin\AppData\Local\Temp\8b1caa70b1a50f9fd65734623edfe6400f89a3f183ad81d432fd90c7dffa5602.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:4660
-
C:\Windows\Syswow64\c80571a5C:\Windows\Syswow64\c80571a51⤵
- 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:4148
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Windows\SysWOW64\c80571a5
- Size 271KB
- SHA256 6fcc26b1bd8cfeb656f07ddae9145a0a3ebcc37437b87369e6310a165767569f
- MD5 3432fa8c9c31af11f9b1021fbd7344f0
- SHA1 238649d798c1aaed1b9090c10a2e7368d5688aeb
- SHA512 e253d61173dba0faaf0e490c863e819d08615013edc381b24ad8112e323eef73d0844440caf419cb812b1e385e5e6e18b31010cb9b3f69794ed63960497ad330
- SSDEEP 6144:Rl51orRJXlDixHkUXe35rGcEOkCybEaQRXr9HNdvOa:vqXUHkUXe39sOkx2LIa
- TLSH T1B944CF5BF27440B6C49AD678C9935A5AFBF1B815872143CF1320C25A1F737E2AE3A325
- MD5 SHA1 SHA512 SSDEEP TLSH