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
29/05/2026, 03:42
Behavioral task
behavioral1
Sample
f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d.exe
- Size 830KB
- Sample260529-d9lddab19m
- SHA256 f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d
- MD5 2fb93e9b6a0e7de7a76ae3e5f4668c59
- SHA1 a8b49b2d167e30c0e75ff6bebe8552d3f3e44fa9
- SHA512 3a468977482d8f48ddf2c1b309158468ccf924e0950ae50a6f7a5169b6cedee98c3b0741056156124c123203e19b4c97997244ebad8fc4573ddf4bdc6ce33f2d
- SSDEEP 12288:mSvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/Lik8CQ3K:FvO2xJKRw2kOkx2LFRvcUQPK
- TLSH T18B055A31E641C03AD0A74575C6FA4BBFE964BD25131165CBA3C43A262FB36D2BA3170E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 2604 3af1a1a0 - Unexpected DNS network traffic destination 6 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
description flow ioc pid Process Destination IP 57 223.5.5.5 492 f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d.exe Destination IP 1 114.114.114.114 492 f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d.exe Destination IP 2 223.5.5.5 492 f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d.exe Destination IP 15 114.114.114.114 492 f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d.exe Destination IP 16 223.5.5.5 492 f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d.exe Destination IP 56 114.114.114.114 492 f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d.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\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 3af1a1a0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3EC845F33427F1C99AF855BE8930371C 3af1a1a0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 3af1a1a0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 3af1a1a0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 3af1a1a0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 3af1a1a0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 3af1a1a0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 3af1a1a0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 3af1a1a0 File created C:\Windows\SysWOW64\3af1a1a0 f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 3af1a1a0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 3af1a1a0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 3af1a1a0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 3af1a1a0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3EC845F33427F1C99AF855BE8930371C 3af1a1a0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 3af1a1a0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 3af1a1a0 -
resource yara_rule behavioral2/memory/492-0-0x00000000004C0000-0x000000000054C000-memory.dmp upx behavioral2/files/0x001700000002601f-2.dat upx behavioral2/memory/2604-3-0x00000000002A0000-0x000000000032C000-memory.dmp upx behavioral2/memory/492-15-0x00000000004C0000-0x000000000054C000-memory.dmp upx behavioral2/memory/2604-16-0x00000000002A0000-0x000000000032C000-memory.dmp upx behavioral2/memory/2604-32-0x00000000002A0000-0x000000000032C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\2c94d8 3af1a1a0 File opened for modification C:\Windows\86c58 f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d.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 f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 3af1a1a0 - 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 3af1a1a0 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 3af1a1a0 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 3af1a1a0 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 3af1a1a0 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 3af1a1a0 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 3af1a1a0 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 3af1a1a0 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 3af1a1a0 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 3af1a1a0 - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 2604 3af1a1a0 2604 3af1a1a0 2604 3af1a1a0 2604 3af1a1a0 2604 3af1a1a0 2604 3af1a1a0 2604 3af1a1a0 2604 3af1a1a0 492 f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d.exe 492 f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d.exe 492 f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d.exe 492 f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d.exe 492 f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d.exe 492 f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 492 f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d.exe Token: SeTcbPrivilege 492 f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d.exe Token: SeDebugPrivilege 2604 3af1a1a0 Token: SeTcbPrivilege 2604 3af1a1a0
Processes
-
C:\Users\Admin\AppData\Local\Temp\f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d.exe"C:\Users\Admin\AppData\Local\Temp\f3b83015755cb8324615b9ea3b9772330fda957aec377fd57a3d32e7b65d742d.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:492
-
C:\Windows\Syswow64\3af1a1a0C:\Windows\Syswow64\3af1a1a01⤵
- 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:2604
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\3af1a1a0
- Size 830KB
- SHA256 04de29960c0bab1233bbc034c0de2a3adf2e9b88d004311826395a5a01835f07
- MD5 2ec00e8246cad6b1bfba13931362cecc
- SHA1 e6d378ce0bac37d1119d9a0a3ec5a4d7bac6af61
- SHA512 c96a84e4d47cb2eaecaf011aaff3117bb6a27b10953518cda6f0bd705f5d1baa4d5ce2e24726b90ef6e00bd437be02fd505da92cc232a3a1f1c797601d094225
- SSDEEP 12288:jSvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/Lik8CQ3K:WvO2xJKRw2kOkx2LFRvcUQPK
- TLSH T1F2055A31E641C03AD0A74575C6FA4BBFE964BD25131165CBA3C43A262FB36D2BA3170E
- MD5 SHA1 SHA512 SSDEEP TLSH