Analysis
- max time kernel
149s - max time network
145s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
29/05/2026, 03:43
Behavioral task
behavioral1
Sample
ef6e8fdd6f6cc86a249c1d469039648a72b00c2ad242b9f9721c3375afb98f9c.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target ef6e8fdd6f6cc86a249c1d469039648a72b00c2ad242b9f9721c3375afb98f9c.exe
- Size 766KB
- Sample260529-eael8act9t
- SHA256 ef6e8fdd6f6cc86a249c1d469039648a72b00c2ad242b9f9721c3375afb98f9c
- MD5 f41ffa8f7a9152fb4eecebc1037f570e
- SHA1 53129bb8ac2b5040ac0019b3b6ea4fe779c491fd
- SHA512 4842de39b98ab74bec8329cf1165d76f907a819567ae3c6951085d0eba2fe005f6aa6ae96186e9fb138b0ac2379cad2a1273148cb1ea377940991b87da88e174
- SSDEEP 12288:XSvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/Liw:ivO2xJKRw2kOkx2LFRvcUV
- TLSH T100F45A31E241C03AD0A74576C6FA0BAFE564BD25531155CBA3C43A6A2FB36D2BE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 1240 88ecbdac - 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 76 223.5.5.5 4396 ef6e8fdd6f6cc86a249c1d469039648a72b00c2ad242b9f9721c3375afb98f9c.exe Destination IP 3 114.114.114.114 4396 ef6e8fdd6f6cc86a249c1d469039648a72b00c2ad242b9f9721c3375afb98f9c.exe Destination IP 4 223.5.5.5 4396 ef6e8fdd6f6cc86a249c1d469039648a72b00c2ad242b9f9721c3375afb98f9c.exe Destination IP 75 114.114.114.114 4396 ef6e8fdd6f6cc86a249c1d469039648a72b00c2ad242b9f9721c3375afb98f9c.exe - Drops file in System32 directory 15 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 88ecbdac File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\AAD646CB44373074ADE741C38400E7E1 88ecbdac File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 88ecbdac File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 88ecbdac File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\AAD646CB44373074ADE741C38400E7E1 88ecbdac File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 88ecbdac File created C:\Windows\SysWOW64\88ecbdac ef6e8fdd6f6cc86a249c1d469039648a72b00c2ad242b9f9721c3375afb98f9c.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 88ecbdac File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 88ecbdac File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 88ecbdac File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 88ecbdac File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 88ecbdac File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 88ecbdac File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 88ecbdac File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 88ecbdac -
resource yara_rule behavioral1/memory/4396-0-0x00000000005A0000-0x000000000062C000-memory.dmp upx behavioral1/files/0x002000000002438b-2.dat upx behavioral1/memory/1240-4-0x0000000000600000-0x000000000068C000-memory.dmp upx behavioral1/memory/4396-10-0x00000000005A0000-0x000000000062C000-memory.dmp upx behavioral1/memory/1240-11-0x0000000000600000-0x000000000068C000-memory.dmp upx behavioral1/memory/1240-29-0x0000000000600000-0x000000000068C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\153ab0 88ecbdac File opened for modification C:\Windows\4b42d8 ef6e8fdd6f6cc86a249c1d469039648a72b00c2ad242b9f9721c3375afb98f9c.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 ef6e8fdd6f6cc86a249c1d469039648a72b00c2ad242b9f9721c3375afb98f9c.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 88ecbdac - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 88ecbdac Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 88ecbdac Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 88ecbdac Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 88ecbdac Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 88ecbdac Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix 88ecbdac Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 88ecbdac Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 88ecbdac Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 88ecbdac - Modifies system certificate store 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\1F24C630CDA418EF2069FFAD4FDD5F463A1B69AA 88ecbdac Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\1F24C630CDA418EF2069FFAD4FDD5F463A1B69AA\Blob = 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 88ecbdac - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 1240 88ecbdac 1240 88ecbdac 1240 88ecbdac 1240 88ecbdac 1240 88ecbdac 1240 88ecbdac 1240 88ecbdac 1240 88ecbdac 4396 ef6e8fdd6f6cc86a249c1d469039648a72b00c2ad242b9f9721c3375afb98f9c.exe 4396 ef6e8fdd6f6cc86a249c1d469039648a72b00c2ad242b9f9721c3375afb98f9c.exe 4396 ef6e8fdd6f6cc86a249c1d469039648a72b00c2ad242b9f9721c3375afb98f9c.exe 4396 ef6e8fdd6f6cc86a249c1d469039648a72b00c2ad242b9f9721c3375afb98f9c.exe 4396 ef6e8fdd6f6cc86a249c1d469039648a72b00c2ad242b9f9721c3375afb98f9c.exe 4396 ef6e8fdd6f6cc86a249c1d469039648a72b00c2ad242b9f9721c3375afb98f9c.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4396 ef6e8fdd6f6cc86a249c1d469039648a72b00c2ad242b9f9721c3375afb98f9c.exe Token: SeTcbPrivilege 4396 ef6e8fdd6f6cc86a249c1d469039648a72b00c2ad242b9f9721c3375afb98f9c.exe Token: SeDebugPrivilege 1240 88ecbdac Token: SeTcbPrivilege 1240 88ecbdac
Processes
-
C:\Users\Admin\AppData\Local\Temp\ef6e8fdd6f6cc86a249c1d469039648a72b00c2ad242b9f9721c3375afb98f9c.exe"C:\Users\Admin\AppData\Local\Temp\ef6e8fdd6f6cc86a249c1d469039648a72b00c2ad242b9f9721c3375afb98f9c.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:4396
-
C:\Windows\Syswow64\88ecbdacC:\Windows\Syswow64\88ecbdac1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1240
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\88ecbdac
- Size 766KB
- SHA256 ba4a72cf0b4f8173e243e3491e5bbfb618bd5a20f859356efddd3261aa773fe5
- MD5 8e295ff72ee958352213f954e85826eb
- SHA1 0e18f53e0b32ff60d520e44bd8e5069114ab518a
- SHA512 487847370bb878597e41795171ca38ab2316ba569df41b7dc227abb92a615b326fe0d179a4f849a1616aec5a7edb7f00b7882db3da6aa57ec2cdefbd3417fd9a
- SSDEEP 12288:wSvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/Liw:rvO2xJKRw2kOkx2LFRvcUV
- TLSH T1B0F45A31E241C03AD0A74576C6FA0BAFE564BD25531155CBA3C43A6A2FB36D2BE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH