Analysis
- max time kernel
148s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
05/09/2026, 02:00
Behavioral task
behavioral1
Sample
a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe
- Size 1.2MB
- Sample260905-ce81hsbd67
- SHA256 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e
- MD5 20574980b988cbaf3b0799b2c31a87c1
- SHA1 47df6a5769af4cf52b880182d86cbc02b45ef24b
- SHA512 b1618e569f03055c44746cd5a7e6f28bc50a581de1e015f07e540e93bcbd86082cb35bc5679be7fdd87a6330dd6df1c5e82d7d4c8e9778d6fa6cfe88d9efc30a
- SSDEEP 24576:TvO2xJKRw2kOkx2LFRvhuZ98Es8k3OH3C0rQ6+y:THHKe2WQXhuTtS0rQi
- TLSH T19E559E31E641C036D4A70176C6B94BBFA578BD22072555CBE3D43A6A2F722D2AE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 4420 a3636c84 - 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 1300 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe Destination IP 2 223.5.5.5 1300 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe Destination IP 18 114.114.114.114 1300 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe Destination IP 19 223.5.5.5 1300 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe - Drops file in System32 directory 13 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE a3636c84 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies a3636c84 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData a3636c84 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content a3636c84 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 a3636c84 File created C:\Windows\SysWOW64\a3636c84 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 a3636c84 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft a3636c84 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache a3636c84 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 a3636c84 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 a3636c84 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 a3636c84 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 a3636c84 -
resource yara_rule behavioral2/memory/1300-0-0x00000000006B0000-0x000000000073C000-memory.dmp upx behavioral2/files/0x000b000000011390-2.dat upx behavioral2/memory/4420-3-0x0000000000610000-0x000000000069C000-memory.dmp upx behavioral2/memory/1300-16-0x00000000006B0000-0x000000000073C000-memory.dmp upx behavioral2/memory/4420-17-0x0000000000610000-0x000000000069C000-memory.dmp upx behavioral2/memory/4420-26-0x0000000000610000-0x000000000069C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\4bac08 a3636c84 File opened for modification C:\Windows\1641a8 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.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 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a3636c84 - 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:" a3636c84 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ a3636c84 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" a3636c84 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing a3636c84 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix a3636c84 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" a3636c84 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" a3636c84 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" a3636c84 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" a3636c84 - Suspicious behavior: EnumeratesProcesses 22 IoCs
pid Process 4420 a3636c84 4420 a3636c84 4420 a3636c84 4420 a3636c84 4420 a3636c84 4420 a3636c84 4420 a3636c84 4420 a3636c84 1300 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe 1300 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe 1300 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe 1300 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe 1300 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe 1300 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe 1300 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe 1300 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe 1300 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe 1300 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe 1300 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe 1300 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe 1300 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe 1300 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 1300 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe Token: SeTcbPrivilege 1300 a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe Token: SeDebugPrivilege 4420 a3636c84 Token: SeTcbPrivilege 4420 a3636c84
Processes
-
C:\Users\Admin\AppData\Local\Temp\a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.exe"C:\Users\Admin\AppData\Local\Temp\a8bba2b86399c8d2583f4c2e95922b4104303237c9121a60b6fada3080dbb63e.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:1300
-
C:\Windows\Syswow64\a3636c84C:\Windows\Syswow64\a3636c841⤵
- 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:4420
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\a3636c84
- Size 1.2MB
- SHA256 36f253e0afe5823ed6c14665543b0a85cc775a675ab2f366c66ae9eaa2ef4644
- MD5 f25bae9eeb251528d2d6b4a94c63b00d
- SHA1 80d6eb5b1dac943a9432b0502a0bb8ac3467ff15
- SHA512 2f15db2675d49df203d58bac1d7ce140ad68735e8241c268dd0bdb2a0498f4303786bd9591a714f3c194cc7144aa5da403587933dda0773f508b77a7e193b0da
- SSDEEP 24576:9vO2xJKRw2kOkx2LFRvhuZ98Es8k3OH3C0rQ6+y:9HHKe2WQXhuTtS0rQi
- TLSH T107559E31E641C036D4A70176C6B94BBFA578BD22072555CBE3D43A6A2F722D2AE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH