Analysis
- max time kernel
149s - max time network
149s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
05/05/2026, 19:12
Behavioral task
behavioral1
Sample
c4b6854e29190b6d0186b1380232e880e7cafab3efa116009f870c3b74451502.exe
Resource
win10v2004-20260130-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target c4b6854e29190b6d0186b1380232e880e7cafab3efa116009f870c3b74451502.exe
- Size 638KB
- Sample260505-xwtx5sd16w
- SHA256 c4b6854e29190b6d0186b1380232e880e7cafab3efa116009f870c3b74451502
- MD5 0a6d3c4627fd7751a508097fe6e51883
- SHA1 3126818f04ce91724943e637e52f1d0a2b209ceb
- SHA512 3e780f37944f8be0d9c79b04c5cf97a4062c5744a455e24f1546add8f24c8a395afd1af82174391b31136ac65b0c80aa751fdd1078030b108c3881cd898c0da8
- SSDEEP 6144:rcTgav1cdCTuoPbgwmOLJvKRwLSFXdFwirGcEOkCybEaQRXr9HNdvOa+y8KU5R2:rSvO2x9mONvKRwLSFtsOkx2LIa+ya5g
- TLSH T197D46B26B6908037C0B74675C5B64BAAFAB5BC21631186CFA380761A1F737D2BE3570D
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 4244 cf1635b4 - 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 2072 c4b6854e29190b6d0186b1380232e880e7cafab3efa116009f870c3b74451502.exe Destination IP 2 223.5.5.5 2072 c4b6854e29190b6d0186b1380232e880e7cafab3efa116009f870c3b74451502.exe Destination IP 10 114.114.114.114 2072 c4b6854e29190b6d0186b1380232e880e7cafab3efa116009f870c3b74451502.exe Destination IP 11 223.5.5.5 2072 c4b6854e29190b6d0186b1380232e880e7cafab3efa116009f870c3b74451502.exe - Drops file in System32 directory 15 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache cf1635b4 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 cf1635b4 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 cf1635b4 File created C:\Windows\SysWOW64\cf1635b4 c4b6854e29190b6d0186b1380232e880e7cafab3efa116009f870c3b74451502.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies cf1635b4 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData cf1635b4 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 cf1635b4 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 cf1635b4 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 cf1635b4 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 cf1635b4 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 cf1635b4 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE cf1635b4 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 cf1635b4 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft cf1635b4 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content cf1635b4 -
resource yara_rule behavioral2/memory/2072-0-0x0000000000D50000-0x0000000000DDC000-memory.dmp upx behavioral2/files/0x000a00000002a05a-3.dat upx behavioral2/memory/4244-4-0x0000000000910000-0x000000000099C000-memory.dmp upx behavioral2/memory/2072-10-0x0000000000D50000-0x0000000000DDC000-memory.dmp upx behavioral2/memory/4244-12-0x0000000000910000-0x000000000099C000-memory.dmp upx behavioral2/memory/4244-34-0x0000000000910000-0x000000000099C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\48a8a8 cf1635b4 File opened for modification C:\Windows\237930 c4b6854e29190b6d0186b1380232e880e7cafab3efa116009f870c3b74451502.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 c4b6854e29190b6d0186b1380232e880e7cafab3efa116009f870c3b74451502.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cf1635b4 - 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 cf1635b4 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" cf1635b4 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ cf1635b4 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" cf1635b4 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" cf1635b4 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing cf1635b4 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" cf1635b4 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" cf1635b4 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" cf1635b4 - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 4244 cf1635b4 4244 cf1635b4 4244 cf1635b4 4244 cf1635b4 4244 cf1635b4 4244 cf1635b4 4244 cf1635b4 4244 cf1635b4 2072 c4b6854e29190b6d0186b1380232e880e7cafab3efa116009f870c3b74451502.exe 2072 c4b6854e29190b6d0186b1380232e880e7cafab3efa116009f870c3b74451502.exe 2072 c4b6854e29190b6d0186b1380232e880e7cafab3efa116009f870c3b74451502.exe 2072 c4b6854e29190b6d0186b1380232e880e7cafab3efa116009f870c3b74451502.exe 2072 c4b6854e29190b6d0186b1380232e880e7cafab3efa116009f870c3b74451502.exe 2072 c4b6854e29190b6d0186b1380232e880e7cafab3efa116009f870c3b74451502.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 2072 c4b6854e29190b6d0186b1380232e880e7cafab3efa116009f870c3b74451502.exe Token: SeTcbPrivilege 2072 c4b6854e29190b6d0186b1380232e880e7cafab3efa116009f870c3b74451502.exe Token: SeDebugPrivilege 4244 cf1635b4 Token: SeTcbPrivilege 4244 cf1635b4
Processes
-
C:\Users\Admin\AppData\Local\Temp\c4b6854e29190b6d0186b1380232e880e7cafab3efa116009f870c3b74451502.exe"C:\Users\Admin\AppData\Local\Temp\c4b6854e29190b6d0186b1380232e880e7cafab3efa116009f870c3b74451502.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:2072
-
C:\Windows\Syswow64\cf1635b4C:\Windows\Syswow64\cf1635b41⤵
- 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:4244
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\cf1635b4
- Size 638KB
- SHA256 2ccf6f890e8aec6e1c8ee0f8ba0d3eaab5fde24f75909034d336bca1cdd8b7c9
- MD5 e1e9623a31b73d4f6162a84411c2bc49
- SHA1 ca4928710f17640233877c62cd78756a72ea914e
- SHA512 1767e454dd9f1d2cb442fd4dbb02843e7746c82967ff566da624d71a8a3e42dbd9dbdc7bb009d938091f6b66a2e84f9d87f09ab72b4d79df5814c52fd9d0f09c
- SSDEEP 6144:2cTgav1cdCTuoPbgwmOLJvKRwLSFXdFwirGcEOkCybEaQRXr9HNdvOa+y8KU5R2:2SvO2x9mONvKRwLSFtsOkx2LIa+ya5g
- TLSH T1A3D46B26B6908037C0B74675C5B64BAAFAB5BC21631186CFA380761A1F737D2BE3570D
- MD5 SHA1 SHA512 SSDEEP TLSH