Analysis
- max time kernel
149s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
09/08/2026, 22:55
Behavioral task
behavioral1
Sample
d4540bc6d5a1fd67964227f63f30aa1722bd3ace215814db2659699c653b8487.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
8 signatures
150 seconds
General
- Target d4540bc6d5a1fd67964227f63f30aa1722bd3ace215814db2659699c653b8487.exe
- Size 3.0MB
- Sample260809-2v9dnach22
- SHA256 d4540bc6d5a1fd67964227f63f30aa1722bd3ace215814db2659699c653b8487
- MD5 7107b823312c0196a2e0299b58ea6710
- SHA1 869d33c644ec7a831ae33b86defaec12578bc57f
- SHA512 52d5e880d90f1b6105a2387f0ae629d7aedbfe12ef3be9a6f14b3feb2ed0c13949c48325e377028f00ce4e116920fc03ab400f7895f37dd846c451a3512a4bc2
- SSDEEP 49152:0A/JuTQKqVmgbQIzZMPXpB91rHpn/qKmNAOaG6IOY/:D/whnLrHp/qKm2/Sb/
- TLSH T1BDE55953EB914AE8E39D0536DF544150E72AF2256BEF13A27428420DDE83387BF61A3D
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 5084 bc8a2f5b - 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 2 114.114.114.114 4704 d4540bc6d5a1fd67964227f63f30aa1722bd3ace215814db2659699c653b8487.exe Destination IP 4 223.5.5.5 4704 d4540bc6d5a1fd67964227f63f30aa1722bd3ace215814db2659699c653b8487.exe Destination IP 23 114.114.114.114 4704 d4540bc6d5a1fd67964227f63f30aa1722bd3ace215814db2659699c653b8487.exe Destination IP 24 223.5.5.5 4704 d4540bc6d5a1fd67964227f63f30aa1722bd3ace215814db2659699c653b8487.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\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 bc8a2f5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content bc8a2f5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3EC845F33427F1C99AF855BE8930371C bc8a2f5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData bc8a2f5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 bc8a2f5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 bc8a2f5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 bc8a2f5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 bc8a2f5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3EC845F33427F1C99AF855BE8930371C bc8a2f5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE bc8a2f5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache bc8a2f5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 bc8a2f5b File created C:\Windows\SysWOW64\bc8a2f5b d4540bc6d5a1fd67964227f63f30aa1722bd3ace215814db2659699c653b8487.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies bc8a2f5b File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft bc8a2f5b -
resource yara_rule behavioral1/memory/4704-0-0x0000000000590000-0x0000000000895000-memory.dmp upx behavioral1/files/0x000e0000000231e4-2.dat upx behavioral1/memory/5084-4-0x00000000003C0000-0x00000000006C5000-memory.dmp upx behavioral1/memory/4704-10-0x0000000000590000-0x0000000000895000-memory.dmp upx behavioral1/memory/5084-11-0x00000000003C0000-0x00000000006C5000-memory.dmp upx behavioral1/memory/5084-21-0x00000000003C0000-0x00000000006C5000-memory.dmp upx - 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 d4540bc6d5a1fd67964227f63f30aa1722bd3ace215814db2659699c653b8487.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language bc8a2f5b - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" bc8a2f5b Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" bc8a2f5b Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" bc8a2f5b Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix bc8a2f5b Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" bc8a2f5b Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing bc8a2f5b Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" bc8a2f5b Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" bc8a2f5b Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ bc8a2f5b - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 5084 bc8a2f5b 5084 bc8a2f5b 5084 bc8a2f5b 5084 bc8a2f5b 5084 bc8a2f5b 5084 bc8a2f5b 5084 bc8a2f5b 5084 bc8a2f5b 4704 d4540bc6d5a1fd67964227f63f30aa1722bd3ace215814db2659699c653b8487.exe 4704 d4540bc6d5a1fd67964227f63f30aa1722bd3ace215814db2659699c653b8487.exe 4704 d4540bc6d5a1fd67964227f63f30aa1722bd3ace215814db2659699c653b8487.exe 4704 d4540bc6d5a1fd67964227f63f30aa1722bd3ace215814db2659699c653b8487.exe 4704 d4540bc6d5a1fd67964227f63f30aa1722bd3ace215814db2659699c653b8487.exe 4704 d4540bc6d5a1fd67964227f63f30aa1722bd3ace215814db2659699c653b8487.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4704 d4540bc6d5a1fd67964227f63f30aa1722bd3ace215814db2659699c653b8487.exe Token: SeTcbPrivilege 4704 d4540bc6d5a1fd67964227f63f30aa1722bd3ace215814db2659699c653b8487.exe Token: SeDebugPrivilege 5084 bc8a2f5b Token: SeTcbPrivilege 5084 bc8a2f5b
Processes
-
C:\Users\Admin\AppData\Local\Temp\d4540bc6d5a1fd67964227f63f30aa1722bd3ace215814db2659699c653b8487.exe"C:\Users\Admin\AppData\Local\Temp\d4540bc6d5a1fd67964227f63f30aa1722bd3ace215814db2659699c653b8487.exe"1⤵
- Unexpected DNS network traffic destination
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4704
-
C:\Windows\Syswow64\bc8a2f5bC:\Windows\Syswow64\bc8a2f5b1⤵
- Executes dropped EXE
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5084
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\bc8a2f5b
- Size 3.0MB
- SHA256 4b44d3a8a6e099e9cedfb8acba7b4c19533c5e59f13e2e62869f53019225a721
- MD5 05e93ccfcf68c317d66352c45c13edf7
- SHA1 379605d55a8e712af7b788e9d71c51b4d8c3154f
- SHA512 750f4091db2f04712eb212555f235ff43aef1353388f06a57f3487b340de71cd8a275dd49306f161d4c085cdaccf863cb67f1d0f0d91c6386256cf42cb315e88
- SSDEEP 49152:xA/JuTQKqVmgbQIzZMPXpB91rHpn/qKmNAOaG6IOY/:2/whnLrHp/qKm2/Sb/
- TLSH T11BE55953EB914AE8E39D0536DF544150E72AF2256BEF13A27428420DDE83387BF61A3D
- MD5 SHA1 SHA512 SSDEEP TLSH