Analysis
- max time kernel
149s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
23/04/2026, 22:15
Behavioral task
behavioral1
Sample
820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe
Resource
win10v2004-20260130-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe
- Size 2.9MB
- Sample260423-159azahs2j
- SHA256 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473
- MD5 bc5412e26c576db93d6750af4f20008e
- SHA1 bb30572799edb5a48f3eaf1abf96d34aacba9355
- SHA512 10fc26db532fb9a297f14f75d4270d13233240bf1c9bcb8df008e4ce7b029099a100fbeac61b8addfd431a69154df95655721073e1453d27195fd753f7b7ee76
- SSDEEP 49152:6HHKe2WQX56/OJdJCXDrsOFZMjHfUTGkQy5QZuTtS0rQMYOF:6nKGEkOhCXHHFZMjHfUKkVWsM0r1F
- TLSH T115D59E31B6818036D1B7467186FA47BBA5257C211721A5CFB3C47B2A1FB36D2AE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 1064 6518e21c - 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 13 114.114.114.114 2400 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe Destination IP 14 223.5.5.5 2400 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe Destination IP 1 114.114.114.114 2400 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe Destination IP 2 223.5.5.5 2400 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe - Drops file in System32 directory 15 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 6518e21c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 6518e21c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 6518e21c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 6518e21c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 6518e21c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 6518e21c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 6518e21c File created C:\Windows\SysWOW64\6518e21c 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 6518e21c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 6518e21c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 6518e21c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 6518e21c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 6518e21c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 6518e21c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 6518e21c -
resource yara_rule behavioral2/memory/2400-0-0x0000000000ED0000-0x0000000000F5C000-memory.dmp upx behavioral2/files/0x001d00000002b1db-2.dat upx behavioral2/memory/1064-3-0x0000000000280000-0x000000000030C000-memory.dmp upx behavioral2/memory/2400-18-0x0000000000ED0000-0x0000000000F5C000-memory.dmp upx behavioral2/memory/1064-19-0x0000000000280000-0x000000000030C000-memory.dmp upx behavioral2/memory/1064-32-0x0000000000280000-0x000000000030C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\2916c0 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe File opened for modification C:\Windows\123750 6518e21c - 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 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 6518e21c - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 6518e21c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 6518e21c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 6518e21c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 6518e21c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix 6518e21c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 6518e21c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 6518e21c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 6518e21c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 6518e21c - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 1064 6518e21c 1064 6518e21c 1064 6518e21c 1064 6518e21c 1064 6518e21c 1064 6518e21c 1064 6518e21c 1064 6518e21c 2400 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe 2400 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe 2400 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe 2400 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe 2400 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe 2400 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 2400 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe Token: SeTcbPrivilege 2400 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe Token: SeDebugPrivilege 1064 6518e21c Token: SeTcbPrivilege 1064 6518e21c
Processes
-
C:\Users\Admin\AppData\Local\Temp\820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe"C:\Users\Admin\AppData\Local\Temp\820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.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:2400
-
C:\Windows\Syswow64\6518e21cC:\Windows\Syswow64\6518e21c1⤵
- 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:1064
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\6518e21c
- Size 2.9MB
- SHA256 ccccd1932d44991352aeaa58e3fa400f0c8fd4e9c8b16426eeb8cd231ba3bfc3
- MD5 0cf0060c7f5094e558de3537e5b5b38b
- SHA1 d36019e5b0a92f26fe716ffd6aa95adac7cb73db
- SHA512 e5f6b608e220d21c96396c7a34094b7298881d988b42aec8dde46cb21c8d1e1f1a7f362b735b0a1fe6ef16f9b58ef93a1009cd4a28e8227f380ee94e3a07a57f
- SSDEEP 49152:+HHKe2WQX56/OJdJCXDrsOFZMjHfUTGkQy5QZuTtS0rQMYOF:+nKGEkOhCXHHFZMjHfUKkVWsM0r1F
- TLSH T14ED59E31B6818036D1B7467186FA47BBA5257C211721A5CFB3C47B2A1FB36D2AE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH