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
06/05/2026, 19:33
Behavioral task
behavioral1
Sample
b920dfbd18fec21fef42159ccc91d199aed1500d7c0f8271010c9fd9a1868e76.exe
Resource
win10v2004-20260130-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target b920dfbd18fec21fef42159ccc91d199aed1500d7c0f8271010c9fd9a1868e76.exe
- Size 766KB
- Sample260506-x9ltpadt8p
- SHA256 b920dfbd18fec21fef42159ccc91d199aed1500d7c0f8271010c9fd9a1868e76
- MD5 4e786b462eb7473c2d5b98b01e95f619
- SHA1 c3d98ee347edf96363ddca10f42cc87e8fce4c3e
- SHA512 12c672e8dd853448d9a43882bbd9b8fcdc64a3dae6f94d918cba2e5bb115f2e244012d94d1d00def635b086457e17d612a66aecf4f8111c94dacce5a73e1d916
- SSDEEP 12288:9SvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/Liw:cvO2xJKRw2kOkx2LFRvcUV
- TLSH T100F45A31E241C03AD0A74576C6FA0BAFE564BD25531155CBA3C43A6A2FB36D2BE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 2112 ff400a40 - 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 1 114.114.114.114 2612 b920dfbd18fec21fef42159ccc91d199aed1500d7c0f8271010c9fd9a1868e76.exe Destination IP 2 223.5.5.5 2612 b920dfbd18fec21fef42159ccc91d199aed1500d7c0f8271010c9fd9a1868e76.exe Destination IP 9 114.114.114.114 2612 b920dfbd18fec21fef42159ccc91d199aed1500d7c0f8271010c9fd9a1868e76.exe Destination IP 10 223.5.5.5 2612 b920dfbd18fec21fef42159ccc91d199aed1500d7c0f8271010c9fd9a1868e76.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 ff400a40 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 ff400a40 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 ff400a40 File created C:\Windows\SysWOW64\ff400a40 b920dfbd18fec21fef42159ccc91d199aed1500d7c0f8271010c9fd9a1868e76.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 ff400a40 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft ff400a40 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache ff400a40 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 ff400a40 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 ff400a40 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 ff400a40 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 ff400a40 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE ff400a40 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies ff400a40 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content ff400a40 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 ff400a40 -
resource yara_rule behavioral2/memory/2612-0-0x00000000000D0000-0x000000000015C000-memory.dmp upx behavioral2/files/0x002c00000002b1ab-2.dat upx behavioral2/memory/2112-3-0x0000000000230000-0x00000000002BC000-memory.dmp upx behavioral2/memory/2612-10-0x00000000000D0000-0x000000000015C000-memory.dmp upx behavioral2/memory/2112-11-0x0000000000230000-0x00000000002BC000-memory.dmp upx behavioral2/memory/2112-25-0x0000000000230000-0x00000000002BC000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\242880 ff400a40 File opened for modification C:\Windows\2cb7e8 b920dfbd18fec21fef42159ccc91d199aed1500d7c0f8271010c9fd9a1868e76.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 b920dfbd18fec21fef42159ccc91d199aed1500d7c0f8271010c9fd9a1868e76.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language ff400a40 - 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\Cookies\CachePrefix = "Cookie:" ff400a40 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" ff400a40 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ ff400a40 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" ff400a40 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" ff400a40 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" ff400a40 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" ff400a40 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing ff400a40 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix ff400a40 - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 2112 ff400a40 2112 ff400a40 2112 ff400a40 2112 ff400a40 2112 ff400a40 2112 ff400a40 2112 ff400a40 2112 ff400a40 2612 b920dfbd18fec21fef42159ccc91d199aed1500d7c0f8271010c9fd9a1868e76.exe 2612 b920dfbd18fec21fef42159ccc91d199aed1500d7c0f8271010c9fd9a1868e76.exe 2612 b920dfbd18fec21fef42159ccc91d199aed1500d7c0f8271010c9fd9a1868e76.exe 2612 b920dfbd18fec21fef42159ccc91d199aed1500d7c0f8271010c9fd9a1868e76.exe 2612 b920dfbd18fec21fef42159ccc91d199aed1500d7c0f8271010c9fd9a1868e76.exe 2612 b920dfbd18fec21fef42159ccc91d199aed1500d7c0f8271010c9fd9a1868e76.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 2612 b920dfbd18fec21fef42159ccc91d199aed1500d7c0f8271010c9fd9a1868e76.exe Token: SeTcbPrivilege 2612 b920dfbd18fec21fef42159ccc91d199aed1500d7c0f8271010c9fd9a1868e76.exe Token: SeDebugPrivilege 2112 ff400a40 Token: SeTcbPrivilege 2112 ff400a40
Processes
-
C:\Users\Admin\AppData\Local\Temp\b920dfbd18fec21fef42159ccc91d199aed1500d7c0f8271010c9fd9a1868e76.exe"C:\Users\Admin\AppData\Local\Temp\b920dfbd18fec21fef42159ccc91d199aed1500d7c0f8271010c9fd9a1868e76.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:2612
-
C:\Windows\Syswow64\ff400a40C:\Windows\Syswow64\ff400a401⤵
- 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:2112
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\ff400a40
- Size 766KB
- SHA256 dbff1f48b720e1cf398a32a36e0a00c2b8e2c5b36bca981142f425a2818cb3d6
- MD5 ba870b3a205dbd8d999d97eec0e80b1c
- SHA1 1f6dd2749938a9940bb66a0e4909d903c17a1a68
- SHA512 bc2caeda282c2d66b9eeafb78e39141f5d49ffa1a669d1a61fa600d4212ce0cd6a111726e888791cac678e133f919820b3d29c6e4f7a922265c971a603bcda22
- SSDEEP 12288:TSvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/Liw:mvO2xJKRw2kOkx2LFRvcUV
- TLSH T184F45A31E241C03AD0A74576C6FA0BAFE564BD25531155CBA3C43A6A2FB36D2BE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH