Analysis
- max time kernel
150s - max time network
147s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
17/08/2026, 00:53
Behavioral task
behavioral1
Sample
ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
9 signatures
150 seconds
Behavioral task
behavioral2
Sample
ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe
Resource
win11ltsc2024-20260709-en
windows11-ltsc_2024-x64
10 signatures
150 seconds
General
- Target ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe
- Size 2.9MB
- Sample260817-a8pgvs1scx
- SHA256 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a
- MD5 ae90758fbc316a846c091896aa117ae8
- SHA1 3d21e5dc3d5e0cc411eefe7fbc1a47ad02ca1551
- SHA512 8fbf2dc99aa5f88dac2215f3992d34b658e4da8f24f450533b84a33dfc76294f8d3139f64424b9e4657d3d6c19bb1deba65cce865bfac822576e7259b4ce0296
- SSDEEP 49152:fHHKe2WQX56/OJdJCXDrsOFZMjHfUTGkQy5QZuTtS0rQMYOF:fnKGEkOhCXHHFZMjHfUKkVWsM0r1F
- TLSH T1A4D59E31B6818036D1B7467186FA47BBA5257C211721A5CFB3C47B2A1FB36D2AE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 4884 a71d70ee - 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 17 223.5.5.5 1984 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe Destination IP 2 114.114.114.114 1984 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe Destination IP 5 223.5.5.5 1984 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe Destination IP 16 114.114.114.114 1984 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe - Drops file in System32 directory 17 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 a71d70ee File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE a71d70ee File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 a71d70ee File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\AAD646CB44373074ADE741C38400E7E1 a71d70ee File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache a71d70ee File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\AAD646CB44373074ADE741C38400E7E1 a71d70ee File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content a71d70ee File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 a71d70ee File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 a71d70ee File created C:\Windows\SysWOW64\a71d70ee ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies a71d70ee File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3EC845F33427F1C99AF855BE8930371C a71d70ee File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3EC845F33427F1C99AF855BE8930371C a71d70ee File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 a71d70ee File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft a71d70ee File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData a71d70ee File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 a71d70ee -
resource yara_rule behavioral2/memory/1984-0-0x0000000000C90000-0x0000000000D1C000-memory.dmp upx behavioral2/files/0x000b000000011377-2.dat upx behavioral2/memory/4884-4-0x0000000000010000-0x000000000009C000-memory.dmp upx behavioral2/memory/1984-10-0x0000000000C90000-0x0000000000D1C000-memory.dmp upx behavioral2/memory/4884-11-0x0000000000010000-0x000000000009C000-memory.dmp upx behavioral2/memory/4884-38-0x0000000000010000-0x000000000009C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\539da8 a71d70ee File opened for modification C:\Windows\21f780 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.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 a71d70ee Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe - 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\Cookies\CachePrefix = "Cookie:" a71d70ee Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" a71d70ee Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ a71d70ee Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" a71d70ee Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix a71d70ee Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" a71d70ee Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" a71d70ee Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" a71d70ee Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing a71d70ee - Modifies system certificate store 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\1F24C630CDA418EF2069FFAD4FDD5F463A1B69AA a71d70ee Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\1F24C630CDA418EF2069FFAD4FDD5F463A1B69AA\Blob = 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 a71d70ee - Suspicious behavior: EnumeratesProcesses 22 IoCs
pid Process 4884 a71d70ee 4884 a71d70ee 4884 a71d70ee 4884 a71d70ee 4884 a71d70ee 4884 a71d70ee 4884 a71d70ee 4884 a71d70ee 1984 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe 1984 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe 1984 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe 1984 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe 1984 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe 1984 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe 1984 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe 1984 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe 1984 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe 1984 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe 1984 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe 1984 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe 1984 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe 1984 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 1984 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe Token: SeTcbPrivilege 1984 ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe Token: SeDebugPrivilege 4884 a71d70ee Token: SeTcbPrivilege 4884 a71d70ee
Processes
-
C:\Users\Admin\AppData\Local\Temp\ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.exe"C:\Users\Admin\AppData\Local\Temp\ef500bb4c98aed4054f4a4df4d1a07ec812f2453ccc95613b44915f8a3670f8a.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:1984
-
C:\Windows\Syswow64\a71d70eeC:\Windows\Syswow64\a71d70ee1⤵
- 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:4884
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\a71d70ee
- Size 2.9MB
- SHA256 93a3934cd5abf8d9dc707d318d4fea3c1300383a6338c2d107361cd28e6ee868
- MD5 41f4f423ab9d2374e7e2b5578a9e07e6
- SHA1 691a44ed3cedb786c7b6ed4b1dd0a967e2be8ef4
- SHA512 6563f92c94dec1d080da692f514047d313d551b9d38e335f66b16dc84e26be1b01ce50a692e4ab088d0f4a5e2960aa4b22671cf740c171c9300c308a8a82d798
- SSDEEP 49152:QHHKe2WQX56/OJdJCXDrsOFZMjHfUTGkQy5QZuTtS0rQMYOF:QnKGEkOhCXHHFZMjHfUKkVWsM0r1F
- TLSH T15FD59E31B6818036D1B7467186FA47BBA5257C211721A5CFB3C47B2A1FB36D2AE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH