Analysis
- max time kernel
149s - max time network
148s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
23/04/2026, 04:19
Behavioral task
behavioral1
Sample
bb6b7e52de5a8aa4c6b3b5aa1575ed179a73de5d5576317e477d6b3a98a2290a.exe
Resource
win10v2004-20260130-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target bb6b7e52de5a8aa4c6b3b5aa1575ed179a73de5d5576317e477d6b3a98a2290a.exe
- Size 640KB
- Sample260423-exmlcagy2q
- SHA256 bb6b7e52de5a8aa4c6b3b5aa1575ed179a73de5d5576317e477d6b3a98a2290a
- MD5 f8314e9d7c4eac62bb8abb041351b9a7
- SHA1 e4b3ddbca5497f885cc9c1d17f715c9dd6a70385
- SHA512 265273dd046b72185985d6e2e71faaf68586d0981eb8b5d095b9ac328eda317f43844895d6ce251ee5add70fc45a2061d25ac0948ca8d90cec4c81a8ffd0b298
- SSDEEP 6144:WcTgav1cdCTuoPbgwmOLJvKRwLSFXdFwirGcEOkCybEaQRuy8KU5Rc:WSvO2x9mONvKRwLSFtsOkxHya5+
- TLSH T12BD45B35A6808036C0B74631C6F64BAAF9B5BC21631195CFA384376A1F737D2BA3570E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 5004 fa0291e1 - 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 2 223.5.5.5 3352 bb6b7e52de5a8aa4c6b3b5aa1575ed179a73de5d5576317e477d6b3a98a2290a.exe Destination IP 8 114.114.114.114 3352 bb6b7e52de5a8aa4c6b3b5aa1575ed179a73de5d5576317e477d6b3a98a2290a.exe Destination IP 9 223.5.5.5 3352 bb6b7e52de5a8aa4c6b3b5aa1575ed179a73de5d5576317e477d6b3a98a2290a.exe Destination IP 1 114.114.114.114 3352 bb6b7e52de5a8aa4c6b3b5aa1575ed179a73de5d5576317e477d6b3a98a2290a.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\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 fa0291e1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 fa0291e1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies fa0291e1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 fa0291e1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 fa0291e1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE fa0291e1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft fa0291e1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache fa0291e1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 fa0291e1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 fa0291e1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 fa0291e1 File created C:\Windows\SysWOW64\fa0291e1 bb6b7e52de5a8aa4c6b3b5aa1575ed179a73de5d5576317e477d6b3a98a2290a.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 fa0291e1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData fa0291e1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content fa0291e1 -
resource yara_rule behavioral2/memory/3352-0-0x0000000000D20000-0x0000000000DAC000-memory.dmp upx behavioral2/files/0x002a00000002b198-2.dat upx behavioral2/memory/5004-3-0x00000000008C0000-0x000000000094C000-memory.dmp upx behavioral2/memory/3352-10-0x0000000000D20000-0x0000000000DAC000-memory.dmp upx behavioral2/memory/5004-11-0x00000000008C0000-0x000000000094C000-memory.dmp upx behavioral2/memory/5004-28-0x00000000008C0000-0x000000000094C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\55ab98 fa0291e1 File opened for modification C:\Windows\396330 bb6b7e52de5a8aa4c6b3b5aa1575ed179a73de5d5576317e477d6b3a98a2290a.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 bb6b7e52de5a8aa4c6b3b5aa1575ed179a73de5d5576317e477d6b3a98a2290a.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language fa0291e1 - 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" fa0291e1 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" fa0291e1 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" fa0291e1 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" fa0291e1 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" fa0291e1 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing fa0291e1 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix fa0291e1 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" fa0291e1 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ fa0291e1 - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 5004 fa0291e1 5004 fa0291e1 5004 fa0291e1 5004 fa0291e1 5004 fa0291e1 5004 fa0291e1 5004 fa0291e1 5004 fa0291e1 3352 bb6b7e52de5a8aa4c6b3b5aa1575ed179a73de5d5576317e477d6b3a98a2290a.exe 3352 bb6b7e52de5a8aa4c6b3b5aa1575ed179a73de5d5576317e477d6b3a98a2290a.exe 3352 bb6b7e52de5a8aa4c6b3b5aa1575ed179a73de5d5576317e477d6b3a98a2290a.exe 3352 bb6b7e52de5a8aa4c6b3b5aa1575ed179a73de5d5576317e477d6b3a98a2290a.exe 3352 bb6b7e52de5a8aa4c6b3b5aa1575ed179a73de5d5576317e477d6b3a98a2290a.exe 3352 bb6b7e52de5a8aa4c6b3b5aa1575ed179a73de5d5576317e477d6b3a98a2290a.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 3352 bb6b7e52de5a8aa4c6b3b5aa1575ed179a73de5d5576317e477d6b3a98a2290a.exe Token: SeTcbPrivilege 3352 bb6b7e52de5a8aa4c6b3b5aa1575ed179a73de5d5576317e477d6b3a98a2290a.exe Token: SeDebugPrivilege 5004 fa0291e1 Token: SeTcbPrivilege 5004 fa0291e1
Processes
-
C:\Users\Admin\AppData\Local\Temp\bb6b7e52de5a8aa4c6b3b5aa1575ed179a73de5d5576317e477d6b3a98a2290a.exe"C:\Users\Admin\AppData\Local\Temp\bb6b7e52de5a8aa4c6b3b5aa1575ed179a73de5d5576317e477d6b3a98a2290a.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:3352
-
C:\Windows\Syswow64\fa0291e1C:\Windows\Syswow64\fa0291e11⤵
- 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:5004
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\fa0291e1
- Size 640KB
- SHA256 f15ab442b30d385fe8e20dfd52d0fb9ca708a6c95c1b49850a998c38b949a7e4
- MD5 38d70958e48e20ffde683623face4f10
- SHA1 9fc7d092d796ca9383bbe3c2271d39facf0f47b2
- SHA512 1786fe65dda63237a71284ebfb3e79a822f8e3e1b03a2e3ce69a5c8dfbb7b93de598de895ccd31c16187ca1598e5cef28649fa7a768f1925da8cc549637e7848
- SSDEEP 6144:9cTgav1cdCTuoPbgwmOLJvKRwLSFXdFwirGcEOkCybEaQRuy8KU5Rc:9SvO2x9mONvKRwLSFtsOkxHya5+
- TLSH T1C9D45B35A6808036C0B74631C6F64BAAF9B5BC25631195CFA384376A1F737D2BA3570E
- MD5 SHA1 SHA512 SSDEEP TLSH