Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
02/05/2026, 09:28
Behavioral task
behavioral1
Sample
bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827.exe
Resource
win10v2004-20260130-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827.exe
- Size 832KB
- Sample260502-lfg3vsct4s
- SHA256 bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827
- MD5 bb468877053de72f019c2b8a1b5ffd00
- SHA1 8331e223eaddf9c1614670d9bd3ed21792aaeb07
- SHA512 2b98b922be47de612ab4b7d002226c45c63cbab5d2c9d601dde5f8fa11e26efcfcc358bb14cb46129d31616299b5fcdd53f4f94ad2bbd36ebbfb374bdd9aabff
- SSDEEP 12288:dSvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/Likr:8vO2xJKRw2kOkx2LFRvcUv
- TLSH T152055A31E6418036D1B34576C6FA0BBFE664BD25131155CBA3C4BA262FB36D2BA3170E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 4204 39b763e0 - Unexpected DNS network traffic destination 6 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
description flow ioc pid Process Destination IP 3 114.114.114.114 4220 bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827.exe Destination IP 6 223.5.5.5 4220 bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827.exe Destination IP 32 114.114.114.114 4220 bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827.exe Destination IP 34 223.5.5.5 4220 bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827.exe Destination IP 89 114.114.114.114 4220 bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827.exe Destination IP 90 223.5.5.5 4220 bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827.exe - Drops file in System32 directory 15 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 39b763e0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\AAD646CB44373074ADE741C38400E7E1 39b763e0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 39b763e0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 39b763e0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 39b763e0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 39b763e0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 39b763e0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 39b763e0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 39b763e0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 39b763e0 File created C:\Windows\SysWOW64\39b763e0 bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 39b763e0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 39b763e0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\AAD646CB44373074ADE741C38400E7E1 39b763e0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 39b763e0 -
resource yara_rule behavioral1/memory/4220-0-0x0000000000A20000-0x0000000000AAC000-memory.dmp upx behavioral1/files/0x001000000001f16f-2.dat upx behavioral1/memory/4204-4-0x0000000000560000-0x00000000005EC000-memory.dmp upx behavioral1/memory/4220-10-0x0000000000A20000-0x0000000000AAC000-memory.dmp upx behavioral1/memory/4204-12-0x0000000000560000-0x00000000005EC000-memory.dmp upx behavioral1/memory/4204-41-0x0000000000560000-0x00000000005EC000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\47f958 39b763e0 File opened for modification C:\Windows\483f78 bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827.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 bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 39b763e0 - 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" 39b763e0 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 39b763e0 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 39b763e0 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix 39b763e0 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 39b763e0 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 39b763e0 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 39b763e0 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 39b763e0 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 39b763e0 - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 4204 39b763e0 4204 39b763e0 4204 39b763e0 4204 39b763e0 4204 39b763e0 4204 39b763e0 4204 39b763e0 4204 39b763e0 4220 bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827.exe 4220 bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827.exe 4220 bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827.exe 4220 bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827.exe 4220 bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827.exe 4220 bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4220 bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827.exe Token: SeTcbPrivilege 4220 bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827.exe Token: SeDebugPrivilege 4204 39b763e0 Token: SeTcbPrivilege 4204 39b763e0
Processes
-
C:\Users\Admin\AppData\Local\Temp\bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827.exe"C:\Users\Admin\AppData\Local\Temp\bf8963b15e8cbf1df275f03d705be0dc1bdb90b674c5957b620e0751f03a0827.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:4220
-
C:\Windows\Syswow64\39b763e0C:\Windows\Syswow64\39b763e01⤵
- 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:4204
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\39b763e0
- Size 832KB
- SHA256 daadf0bdc95aeb53646b213ec8648370b744b7a880bcc6042ef7e2e3a22ba3ee
- MD5 4ea20b7faf719edf6255d8cf84ac9e66
- SHA1 5860a1811711dc27b86e09e19c69be3d9cf7e801
- SHA512 698f6335594f4f6be79f15ee5298257a237ea4c340d2e1f0d5045bfe8b504b7eb0cd93340c6841676888df79181dec86b9a8efd8328d72390846d0000d64709e
- SSDEEP 12288:ySvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/Likr:ZvO2xJKRw2kOkx2LFRvcUv
- TLSH T1C9055A31E6418036D1B34576C6FA0BBFE664BD25131155CBA3C4BA262FB36D2BA3170E
- MD5 SHA1 SHA512 SSDEEP TLSH