Analysis
- max time kernel
149s - max time network
149s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
28/05/2026, 02:20
Behavioral task
behavioral1
Sample
a448582dcd681bcf67e6a33cbcbae4ed8b757d119d3751adbc2730df9c5ffce7.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target a448582dcd681bcf67e6a33cbcbae4ed8b757d119d3751adbc2730df9c5ffce7.exe
- Size 576KB
- Sample260528-csxveafv2x
- SHA256 a448582dcd681bcf67e6a33cbcbae4ed8b757d119d3751adbc2730df9c5ffce7
- MD5 0789b9c5d1d78c8a3d4650c7a20af719
- SHA1 1cc377e9904ae7c86afdebdfcfff2d2f83d34084
- SHA512 3110361e86dfe226f0859ef4d2c4e6a02dd8c869664a09cd9ca704d9f7e87c9915fad01536e6380a5f31f85747ee338e946bbcb4451da3cbfe5a4cbe38b88c0d
- SSDEEP 12288:GqXUHkUXe39sOkx2LIan5FAQjU/Lik8CQ3K:GjHPOSOkx2LFscUQPK
- TLSH T129C47C31E201C03AD1A74572C6FE0BAFA568BD24431562C7A3D479762FF72D2AA3171E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 3964 b35e89f1 - 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 3152 a448582dcd681bcf67e6a33cbcbae4ed8b757d119d3751adbc2730df9c5ffce7.exe Destination IP 2 223.5.5.5 3152 a448582dcd681bcf67e6a33cbcbae4ed8b757d119d3751adbc2730df9c5ffce7.exe Destination IP 11 114.114.114.114 3152 a448582dcd681bcf67e6a33cbcbae4ed8b757d119d3751adbc2730df9c5ffce7.exe Destination IP 12 223.5.5.5 3152 a448582dcd681bcf67e6a33cbcbae4ed8b757d119d3751adbc2730df9c5ffce7.exe - Drops file in System32 directory 15 IoCs
description ioc Process File created C:\Windows\SysWOW64\b35e89f1 a448582dcd681bcf67e6a33cbcbae4ed8b757d119d3751adbc2730df9c5ffce7.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE b35e89f1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies b35e89f1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft b35e89f1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData b35e89f1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content b35e89f1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache b35e89f1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3EC845F33427F1C99AF855BE8930371C b35e89f1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 b35e89f1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 b35e89f1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 b35e89f1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3EC845F33427F1C99AF855BE8930371C b35e89f1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 b35e89f1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 b35e89f1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 b35e89f1 -
resource yara_rule behavioral2/memory/3152-0-0x0000000000A90000-0x0000000000B19000-memory.dmp upx behavioral2/files/0x002200000002b24f-3.dat upx behavioral2/memory/3964-4-0x00000000003F0000-0x0000000000479000-memory.dmp upx behavioral2/memory/3152-15-0x0000000000A90000-0x0000000000B19000-memory.dmp upx behavioral2/memory/3964-17-0x00000000003F0000-0x0000000000479000-memory.dmp upx behavioral2/memory/3152-29-0x0000000000A90000-0x0000000000B19000-memory.dmp upx behavioral2/memory/3964-30-0x00000000003F0000-0x0000000000479000-memory.dmp upx behavioral2/memory/3964-37-0x00000000003F0000-0x0000000000479000-memory.dmp upx behavioral2/memory/3152-49-0x0000000000A90000-0x0000000000B19000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\43dd78 b35e89f1 File opened for modification C:\Windows\35f6a0 a448582dcd681bcf67e6a33cbcbae4ed8b757d119d3751adbc2730df9c5ffce7.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 a448582dcd681bcf67e6a33cbcbae4ed8b757d119d3751adbc2730df9c5ffce7.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b35e89f1 - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" b35e89f1 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing b35e89f1 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix b35e89f1 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" b35e89f1 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" b35e89f1 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" b35e89f1 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" b35e89f1 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" b35e89f1 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ b35e89f1 - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 3964 b35e89f1 3964 b35e89f1 3964 b35e89f1 3964 b35e89f1 3964 b35e89f1 3964 b35e89f1 3964 b35e89f1 3964 b35e89f1 3152 a448582dcd681bcf67e6a33cbcbae4ed8b757d119d3751adbc2730df9c5ffce7.exe 3152 a448582dcd681bcf67e6a33cbcbae4ed8b757d119d3751adbc2730df9c5ffce7.exe 3152 a448582dcd681bcf67e6a33cbcbae4ed8b757d119d3751adbc2730df9c5ffce7.exe 3152 a448582dcd681bcf67e6a33cbcbae4ed8b757d119d3751adbc2730df9c5ffce7.exe 3152 a448582dcd681bcf67e6a33cbcbae4ed8b757d119d3751adbc2730df9c5ffce7.exe 3152 a448582dcd681bcf67e6a33cbcbae4ed8b757d119d3751adbc2730df9c5ffce7.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 3152 a448582dcd681bcf67e6a33cbcbae4ed8b757d119d3751adbc2730df9c5ffce7.exe Token: SeTcbPrivilege 3152 a448582dcd681bcf67e6a33cbcbae4ed8b757d119d3751adbc2730df9c5ffce7.exe Token: SeDebugPrivilege 3964 b35e89f1 Token: SeTcbPrivilege 3964 b35e89f1
Processes
-
C:\Users\Admin\AppData\Local\Temp\a448582dcd681bcf67e6a33cbcbae4ed8b757d119d3751adbc2730df9c5ffce7.exe"C:\Users\Admin\AppData\Local\Temp\a448582dcd681bcf67e6a33cbcbae4ed8b757d119d3751adbc2730df9c5ffce7.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:3152
-
C:\Windows\Syswow64\b35e89f1C:\Windows\Syswow64\b35e89f11⤵
- 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:3964
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\b35e89f1
- Size 576KB
- SHA256 3832189935bff8bbf7d0dee952e9e8e2a89e19175d7087714cd9496a4f68c10e
- MD5 365484ac9c65f4d9764f0a7882e9373d
- SHA1 3bce75841597f1ccc23d5d6cb2308c11d6af6d1d
- SHA512 fa6deb8ec34adcf91c28cb80c2625d0db1d3fbd0fdcf0437e54b3f123f4bec41a1531eb6fe9de7e719a07779692d03a7fe0e77216853d906aff61fb1e4c1aff5
- SSDEEP 12288:sqXUHkUXe39sOkx2LIan5FAQjU/Lik8CQ3K:sjHPOSOkx2LFscUQPK
- TLSH T12DC47C31E201C03AD1A74572C6FE0BAFA568BD24431562C7A3D479762FF72D2AA3171E
- MD5 SHA1 SHA512 SSDEEP TLSH