Analysis
- max time kernel
149s - max time network
151s - 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, 03:52
Behavioral task
behavioral1
Sample
421c8e216b5246dab4538f61bcd0625fb40b9ed50954ca1561a625cb1de363c0.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target 421c8e216b5246dab4538f61bcd0625fb40b9ed50954ca1561a625cb1de363c0.exe
- Size 2.5MB
- Sample260529-efdxwact7q
- SHA256 421c8e216b5246dab4538f61bcd0625fb40b9ed50954ca1561a625cb1de363c0
- MD5 66362a6fd8c14e815bc5b16b1500783a
- SHA1 0c79e39377134f6a57a173e23e3e38f3c5352ad9
- SHA512 2eb4bb2e9e5686672c9bd3978f16f08b6f89542fda9d84a831ac32607936950899b9336e3fcc6c8496e2a46738d37fef484c40bd4605b2f58caf0b01d4ba43b8
- SSDEEP 49152:WHHKe2WQX56/OJdJCXDrsOFZMjHfUTGkQy5QZuTtN:WnKGEkOhCXHHFZMjHfUKkVWsT
- TLSH T1E7C58E31E6818136D1B34671C6FA57BBA5247C211721A5CFA3C87A2A1F736D3AE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 2400 5c857f2c - 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 2108 421c8e216b5246dab4538f61bcd0625fb40b9ed50954ca1561a625cb1de363c0.exe Destination IP 2 223.5.5.5 2108 421c8e216b5246dab4538f61bcd0625fb40b9ed50954ca1561a625cb1de363c0.exe Destination IP 7 114.114.114.114 2108 421c8e216b5246dab4538f61bcd0625fb40b9ed50954ca1561a625cb1de363c0.exe Destination IP 8 223.5.5.5 2108 421c8e216b5246dab4538f61bcd0625fb40b9ed50954ca1561a625cb1de363c0.exe - Drops file in System32 directory 15 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 5c857f2c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\AAD646CB44373074ADE741C38400E7E1 5c857f2c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 5c857f2c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 5c857f2c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 5c857f2c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 5c857f2c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 5c857f2c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 5c857f2c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 5c857f2c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\AAD646CB44373074ADE741C38400E7E1 5c857f2c File created C:\Windows\SysWOW64\5c857f2c 421c8e216b5246dab4538f61bcd0625fb40b9ed50954ca1561a625cb1de363c0.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 5c857f2c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 5c857f2c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 5c857f2c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 5c857f2c -
resource yara_rule behavioral2/memory/2108-0-0x0000000000140000-0x00000000001CC000-memory.dmp upx behavioral2/files/0x001700000002601f-3.dat upx behavioral2/memory/2400-4-0x0000000000560000-0x00000000005EC000-memory.dmp upx behavioral2/memory/2108-10-0x0000000000140000-0x00000000001CC000-memory.dmp upx behavioral2/memory/2400-11-0x0000000000560000-0x00000000005EC000-memory.dmp upx behavioral2/memory/2400-33-0x0000000000560000-0x00000000005EC000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\2916c0 5c857f2c File opened for modification C:\Windows\2416f8 421c8e216b5246dab4538f61bcd0625fb40b9ed50954ca1561a625cb1de363c0.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 421c8e216b5246dab4538f61bcd0625fb40b9ed50954ca1561a625cb1de363c0.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 5c857f2c - 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 5c857f2c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 5c857f2c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 5c857f2c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 5c857f2c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 5c857f2c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 5c857f2c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 5c857f2c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 5c857f2c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 5c857f2c - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 2400 5c857f2c 2400 5c857f2c 2400 5c857f2c 2400 5c857f2c 2400 5c857f2c 2400 5c857f2c 2400 5c857f2c 2400 5c857f2c 2108 421c8e216b5246dab4538f61bcd0625fb40b9ed50954ca1561a625cb1de363c0.exe 2108 421c8e216b5246dab4538f61bcd0625fb40b9ed50954ca1561a625cb1de363c0.exe 2108 421c8e216b5246dab4538f61bcd0625fb40b9ed50954ca1561a625cb1de363c0.exe 2108 421c8e216b5246dab4538f61bcd0625fb40b9ed50954ca1561a625cb1de363c0.exe 2108 421c8e216b5246dab4538f61bcd0625fb40b9ed50954ca1561a625cb1de363c0.exe 2108 421c8e216b5246dab4538f61bcd0625fb40b9ed50954ca1561a625cb1de363c0.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 2108 421c8e216b5246dab4538f61bcd0625fb40b9ed50954ca1561a625cb1de363c0.exe Token: SeTcbPrivilege 2108 421c8e216b5246dab4538f61bcd0625fb40b9ed50954ca1561a625cb1de363c0.exe Token: SeDebugPrivilege 2400 5c857f2c Token: SeTcbPrivilege 2400 5c857f2c
Processes
-
C:\Users\Admin\AppData\Local\Temp\421c8e216b5246dab4538f61bcd0625fb40b9ed50954ca1561a625cb1de363c0.exe"C:\Users\Admin\AppData\Local\Temp\421c8e216b5246dab4538f61bcd0625fb40b9ed50954ca1561a625cb1de363c0.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:2108
-
C:\Windows\Syswow64\5c857f2cC:\Windows\Syswow64\5c857f2c1⤵
- 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:2400
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\5c857f2c
- Size 2.5MB
- SHA256 69c6b50b046d2988f782c7e80487be10c1c042a3b77e4c920a7117f13a1f0f99
- MD5 2fbafb29547b7eb47ae666bc457b6ff6
- SHA1 f31cb264c6cee965426f73d17479ab378fdc9c34
- SHA512 66deef6a4bbb0486bb2df727152a279f91734fd6e68b9ba1587ddc6fabf6326b14162b771df19813a39d928364001e9a2592b192a49ebf3582ac389a3477e013
- SSDEEP 49152:iHHKe2WQX56/OJdJCXDrsOFZMjHfUTGkQy5QZuTtN:inKGEkOhCXHHFZMjHfUKkVWsT
- TLSH T1B5C58E31E6818136D1B34671C6FA57BBA5247C211721A5CFA3C87A2A1F736D3AE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH