Analysis
- max time kernel
149s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-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 1540 1f3e3764 - 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 5 114.114.114.114 4436 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe Destination IP 6 223.5.5.5 4436 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe Destination IP 36 114.114.114.114 4436 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe Destination IP 38 223.5.5.5 4436 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe - Drops file in System32 directory 13 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 1f3e3764 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 1f3e3764 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 1f3e3764 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 1f3e3764 File created C:\Windows\SysWOW64\1f3e3764 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 1f3e3764 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 1f3e3764 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 1f3e3764 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 1f3e3764 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 1f3e3764 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 1f3e3764 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 1f3e3764 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 1f3e3764 -
resource yara_rule behavioral1/memory/4436-0-0x00000000009A0000-0x0000000000A2C000-memory.dmp upx behavioral1/files/0x000c000000024299-4.dat upx behavioral1/memory/1540-3-0x0000000000020000-0x00000000000AC000-memory.dmp upx behavioral1/memory/4436-16-0x00000000009A0000-0x0000000000A2C000-memory.dmp upx behavioral1/memory/1540-17-0x0000000000020000-0x00000000000AC000-memory.dmp upx behavioral1/memory/1540-28-0x0000000000020000-0x00000000000AC000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\1a5d88 1f3e3764 File opened for modification C:\Windows\4bf228 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.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 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 1f3e3764 - 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:" 1f3e3764 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 1f3e3764 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 1f3e3764 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 1f3e3764 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 1f3e3764 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 1f3e3764 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 1f3e3764 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix 1f3e3764 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 1f3e3764 - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 1540 1f3e3764 1540 1f3e3764 1540 1f3e3764 1540 1f3e3764 1540 1f3e3764 1540 1f3e3764 1540 1f3e3764 1540 1f3e3764 4436 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe 4436 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe 4436 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe 4436 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe 4436 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe 4436 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4436 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe Token: SeTcbPrivilege 4436 820d55fb6cf5fec1a8d4f1c3fc68ac26a95cee35fab291c94375330af60d9473.exe Token: SeDebugPrivilege 1540 1f3e3764 Token: SeTcbPrivilege 1540 1f3e3764
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:4436
-
C:\Windows\Syswow64\1f3e3764C:\Windows\Syswow64\1f3e37641⤵
- 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:1540
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\1f3e3764
- Size 2.9MB
- SHA256 2c06b2b1d8da497433f8dc4f93b1ee6098af66092a31d00b67d5b3a90c2aa4b8
- MD5 ef463ac310e55930e17c9bd87a1e2be7
- SHA1 0d6b19fb96faf23dec4484306ff649bf63e0cbf6
- SHA512 a3a882fdc013d855f4dd92197fed8397c36a1e243f86cf1f3e67c673393db3d2e81a60c2945ac5d59f2859c9cd5ca8afe763e5116693bbd5b1b3dabcdd20babd
- SSDEEP 49152:LHHKe2WQX56/OJdJCXDrsOFZMjHfUTGkQy5QZuTtS0rQMYOF:LnKGEkOhCXHHFZMjHfUKkVWsM0r1F
- TLSH T175D59E31B6818036D1B7467186FA47BBA5257C211721A5CFB3C47B2A1FB36D2AE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH