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
15/04/2026, 19:43
Behavioral task
behavioral1
Sample
cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.exe
Resource
win10v2004-20260130-en
windows10-2004-x64
9 signatures
150 seconds
Behavioral task
behavioral2
Sample
cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.exe
Resource
win11-20260130-en
windows11-21h2-x64
10 signatures
150 seconds
General
- Target cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.exe
- Size 768KB
- Sample260415-yfmdsshs7m
- SHA256 cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b
- MD5 f3a94404796d991483fb7897815f02ca
- SHA1 2f45c5ff1df5b3de3a2edccd0f5562abefe1c19e
- SHA512 dcfb12195fc6d07b0f12f43851022b691f60d6e45065444fed78696e2377613d1965dae2f24c528aa482d7744d5c5d9a7c08c0d4383968abe65da7cfb3093a06
- SSDEEP 12288:DqXUHkUXe39sOkx2LIan5FAQjU/LikGU5rCOTeidT:DjHPOSOkx2LFscU6UQOJdT
- TLSH T178F47D31E241C036D6A74572C6FA4BBBA5247D25431161CBA7C4BA262FB76D2FA3130F
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 4508 39a41be8 - 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 64 114.114.114.114 4440 cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.exe Destination IP 65 223.5.5.5 4440 cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.exe Destination IP 1 114.114.114.114 4440 cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.exe Destination IP 2 223.5.5.5 4440 cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.exe Destination IP 14 114.114.114.114 4440 cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.exe Destination IP 15 223.5.5.5 4440 cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.exe - Drops file in System32 directory 17 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 39a41be8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 39a41be8 File created C:\Windows\SysWOW64\39a41be8 cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 39a41be8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 39a41be8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 39a41be8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 39a41be8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 39a41be8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 39a41be8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 39a41be8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\AAD646CB44373074ADE741C38400E7E1 39a41be8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 39a41be8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 39a41be8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 39a41be8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 39a41be8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 39a41be8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\AAD646CB44373074ADE741C38400E7E1 39a41be8 -
resource yara_rule behavioral2/memory/4440-0-0x0000000000380000-0x0000000000409000-memory.dmp upx behavioral2/files/0x001d00000002b160-2.dat upx behavioral2/memory/4508-3-0x0000000000AB0000-0x0000000000B39000-memory.dmp upx behavioral2/memory/4440-12-0x0000000000380000-0x0000000000409000-memory.dmp upx behavioral2/memory/4508-14-0x0000000000AB0000-0x0000000000B39000-memory.dmp upx behavioral2/memory/4508-22-0x0000000000AB0000-0x0000000000B39000-memory.dmp upx behavioral2/memory/4440-25-0x0000000000380000-0x0000000000409000-memory.dmp upx behavioral2/memory/4440-34-0x0000000000380000-0x0000000000409000-memory.dmp upx behavioral2/memory/4508-35-0x0000000000AB0000-0x0000000000B39000-memory.dmp upx behavioral2/memory/4508-37-0x0000000000AB0000-0x0000000000B39000-memory.dmp upx behavioral2/memory/4440-52-0x0000000000380000-0x0000000000409000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\4d2db8 39a41be8 File opened for modification C:\Windows\4c03b0 cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.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 cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 39a41be8 - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 39a41be8 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 39a41be8 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 39a41be8 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 39a41be8 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix 39a41be8 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 39a41be8 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 39a41be8 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 39a41be8 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 39a41be8 - Modifies system certificate store 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\1F24C630CDA418EF2069FFAD4FDD5F463A1B69AA 39a41be8 Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\1F24C630CDA418EF2069FFAD4FDD5F463A1B69AA\Blob = 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 39a41be8 - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 4508 39a41be8 4508 39a41be8 4508 39a41be8 4508 39a41be8 4508 39a41be8 4508 39a41be8 4508 39a41be8 4508 39a41be8 4440 cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.exe 4440 cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.exe 4440 cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.exe 4440 cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.exe 4440 cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.exe 4440 cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4440 cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.exe Token: SeTcbPrivilege 4440 cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.exe Token: SeDebugPrivilege 4508 39a41be8 Token: SeTcbPrivilege 4508 39a41be8
Processes
-
C:\Users\Admin\AppData\Local\Temp\cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.exe"C:\Users\Admin\AppData\Local\Temp\cf3fa7278550719de795cb9090009260b5ad1b9f11985679cd47108cd791634b.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:4440
-
C:\Windows\Syswow64\39a41be8C:\Windows\Syswow64\39a41be81⤵
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4508
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\39a41be8
- Size 768KB
- SHA256 bbc224dea8d814987d1a0db224600c66ebf4502b6a69533654d2b768545db278
- MD5 a8cf29da79c6cdd9088b323c986c16cb
- SHA1 f8db564a1470772a87cdb1cbcc64aecf0eafd911
- SHA512 b9a790e9fae5abf33c6f65efe7f44fad9f7419eb1363be0572df69d878af8f2679dbfa3664bd029ada347c2867e74ed9cb235d976f5e3b995444a020572078c8
- SSDEEP 12288:WqXUHkUXe39sOkx2LIan5FAQjU/LikGU5rCOTeidT:WjHPOSOkx2LFscU6UQOJdT
- TLSH T117F47D31E241C036D6A74572C6FA4BBBA5247D25431161CBA7C4BA262FB76D2FA3130F
- MD5 SHA1 SHA512 SSDEEP TLSH