Analysis
- max time kernel
149s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
17/10/2026, 10:18
Behavioral task
behavioral1
Sample
ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe
Resource
win10v2004-20260911-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe
- Size 560KB
- Sample261017-mcdrpsec99
- SHA256 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3
- MD5 23f294e2cde2f6d93c8321043eab97b3
- SHA1 bd8658e1267de8819b5c5395e0aa133073105958
- SHA512 2c4e7a6cc312658075c30fc314032c64df06694084896fd5b953dfa72e106f311ab9dbd590375c0ac328cb90cdcc3b90605242a483afb7ddf0d4991db9556c0e
- SSDEEP 6144:1WVrC1c2oonALgPLj7vf1LKlyIFVirGcEOkCybEaQRXr9HNdvOa+y8K:1kCO2zVPX7vf1LKlIsOkx2LIa+y
- TLSH T1F2C47C2AF6A0C036C4779574C4A257AAFFB1B42127204ACFA390475A1F637E2BE7531D
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 1276 d4685640 - Unexpected DNS network traffic destination 19 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
description flow ioc pid Process Destination IP 346 114.114.114.114 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Destination IP 378 223.5.5.5 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Destination IP 438 114.114.114.114 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Destination IP 439 223.5.5.5 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Destination IP 186 223.5.5.5 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Destination IP 347 223.5.5.5 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Destination IP 3 114.114.114.114 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Destination IP 116 223.5.5.5 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Destination IP 219 114.114.114.114 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Destination IP 280 114.114.114.114 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Destination IP 281 223.5.5.5 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Destination IP 325 114.114.114.114 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Destination IP 4 223.5.5.5 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Destination IP 46 114.114.114.114 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Destination IP 47 223.5.5.5 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Destination IP 183 114.114.114.114 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Destination IP 220 223.5.5.5 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Destination IP 377 114.114.114.114 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Destination IP 115 114.114.114.114 1276 d4685640 - Drops file in System32 directory 13 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 d4685640 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 d4685640 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE d4685640 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 d4685640 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft d4685640 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 d4685640 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content d4685640 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 d4685640 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 d4685640 File created C:\Windows\SysWOW64\d4685640 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies d4685640 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache d4685640 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData d4685640 -
resource yara_rule behavioral1/memory/4936-0-0x0000000000B60000-0x0000000000BEC000-memory.dmp upx behavioral1/files/0x0016000000024201-2.dat upx behavioral1/memory/1276-4-0x00000000005F0000-0x000000000067C000-memory.dmp upx behavioral1/memory/4936-18-0x0000000000B60000-0x0000000000BEC000-memory.dmp upx behavioral1/memory/1276-19-0x00000000005F0000-0x000000000067C000-memory.dmp upx behavioral1/memory/1276-36-0x00000000005F0000-0x000000000067C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\15d878 d4685640 File opened for modification C:\Windows\548190 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe - Reads the TCP/IP host and domain name from the registry 1 TTPs 4 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain d4685640 Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname d4685640 - 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 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language d4685640 - 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 d4685640 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ d4685640 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" d4685640 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" d4685640 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing d4685640 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" d4685640 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" d4685640 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" d4685640 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" d4685640 - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 1276 d4685640 1276 d4685640 1276 d4685640 1276 d4685640 1276 d4685640 1276 d4685640 1276 d4685640 1276 d4685640 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Token: SeTcbPrivilege 4936 ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe Token: SeDebugPrivilege 1276 d4685640 Token: SeTcbPrivilege 1276 d4685640
Processes
-
C:\Users\Admin\AppData\Local\Temp\ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe"C:\Users\Admin\AppData\Local\Temp\ac81db193cc36c51b7fb6f7186973bf665861f7fb2abeb3561fa6547b8d258f3.exe"1⤵
- Unexpected DNS network traffic destination
- Drops file in System32 directory
- Drops file in Windows directory
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4936
-
C:\Windows\Syswow64\d4685640C:\Windows\Syswow64\d46856401⤵
- Executes dropped EXE
- Unexpected DNS network traffic destination
- Drops file in System32 directory
- Drops file in Windows directory
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1276
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\d4685640
- Size 560KB
- SHA256 e49d060cacc3ea014c120819ea13b92e61da0634ff05c2b6c17208ca4b8eac02
- MD5 2f91672f3682f12b53c3a872530063d8
- SHA1 3910cd65d25a7bb4817fb59325340b400be113fd
- SHA512 8d4a2ed0e6386921863a187dfb1022cfb1795f49f8bf42bf449e5e6c1b3e28c7b003eaec029f49fec035d003845a83dcb27eca13872a9d4b01aee8397ce19d2a
- SSDEEP 6144:SWVrC1c2oonALgPLj7vf1LKlyIFVirGcEOkCybEaQRXr9HNdvOa+y8K:SkCO2zVPX7vf1LKlIsOkx2LIa+y
- TLSH T192C47C2AF6A0C036C4779574C4A257AAFFB1B42127204ACFA390475A1F637E2BE7531D
- MD5 SHA1 SHA512 SSDEEP TLSH