Analysis
- max time kernel
148s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
22/07/2026, 19:37
Behavioral task
behavioral1
Sample
587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe
- Size 873KB
- Sample260722-ybwrnstbpg
- SHA256 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3
- MD5 f7805a4335757ec7717533b549fb8ae9
- SHA1 f8bb839bfe6ab5e5e2079bf7f105b0b1e6412a13
- SHA512 4f287fa2f4e51fde5ef37c2771a64f3a12111ff5a357c084a58291be7eaad9b7a7b5ad731d559f0fe90f453c80574a16a23f079ec536c4c65d567ba4a2de14cf
- SSDEEP 12288:ISvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/Lik8CQ3uEW:DvO2xJKRw2kOkx2LFRvcUQPxW
- TLSH T13A156B31E641C036D0A34576C6FA4BBFE964BD25531165CBA3D43A262FB32D2BA3170E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 4140 f77bbaf8 - 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 17 114.114.114.114 1588 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe Destination IP 18 223.5.5.5 1588 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe Destination IP 1 114.114.114.114 1588 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe Destination IP 2 223.5.5.5 1588 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe - Drops file in System32 directory 13 IoCs
description ioc Process File created C:\Windows\SysWOW64\f77bbaf8 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE f77bbaf8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 f77bbaf8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache f77bbaf8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content f77bbaf8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 f77bbaf8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies f77bbaf8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft f77bbaf8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData f77bbaf8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 f77bbaf8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 f77bbaf8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 f77bbaf8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 f77bbaf8 -
resource yara_rule behavioral2/memory/1588-0-0x0000000000840000-0x00000000008CC000-memory.dmp upx behavioral2/memory/4140-4-0x0000000000500000-0x000000000058C000-memory.dmp upx behavioral2/files/0x000a00000001b315-3.dat upx behavioral2/memory/1588-10-0x0000000000840000-0x00000000008CC000-memory.dmp upx behavioral2/memory/4140-11-0x0000000000500000-0x000000000058C000-memory.dmp upx behavioral2/memory/4140-32-0x0000000000500000-0x000000000058C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\46e0d8 f77bbaf8 File opened for modification C:\Windows\1b2fe8 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.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 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language f77bbaf8 - 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\History\CachePrefix = "Visited:" f77bbaf8 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" f77bbaf8 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ f77bbaf8 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" f77bbaf8 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" f77bbaf8 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" f77bbaf8 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing f77bbaf8 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix f77bbaf8 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" f77bbaf8 - Suspicious behavior: EnumeratesProcesses 22 IoCs
pid Process 4140 f77bbaf8 4140 f77bbaf8 4140 f77bbaf8 4140 f77bbaf8 4140 f77bbaf8 4140 f77bbaf8 4140 f77bbaf8 4140 f77bbaf8 1588 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe 1588 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe 1588 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe 1588 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe 1588 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe 1588 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe 1588 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe 1588 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe 1588 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe 1588 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe 1588 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe 1588 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe 1588 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe 1588 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 1588 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe Token: SeTcbPrivilege 1588 587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe Token: SeDebugPrivilege 4140 f77bbaf8 Token: SeTcbPrivilege 4140 f77bbaf8
Processes
-
C:\Users\Admin\AppData\Local\Temp\587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.exe"C:\Users\Admin\AppData\Local\Temp\587be9c6ba614ba3a704a3bfc1358db0dbd72693062b452ba8c58dad13a673f3.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:1588
-
C:\Windows\Syswow64\f77bbaf8C:\Windows\Syswow64\f77bbaf81⤵
- 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:4140
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\f77bbaf8
- Size 873KB
- SHA256 2f9ee8aafe968ac3f7043a085a5a59ee669af9d578b9fb931095672e390ab5ad
- MD5 3aa66a25e0dc16e0f4fb4c5050f65181
- SHA1 fa1d234b7fa4394620d7326b6456a26844f7ec8b
- SHA512 5f51d33462e66d20a492e04630a88464f40908ad95733a1eca1e1ae509323f84d9803d553c0073453173102d81eccabcf326c0ca864adde1c9c9d2e1934fa6f7
- SSDEEP 12288:LSvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/Lik8CQ3uEW:+vO2xJKRw2kOkx2LFRvcUQPxW
- TLSH T1D1156B31E641C036D0A34576C6FA4BBFE964BD25531165CBA3D43A262FB32D2BA3170E
- MD5 SHA1 SHA512 SSDEEP TLSH