Analysis
- max time kernel
148s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
19/07/2026, 02:49
Behavioral task
behavioral1
Sample
b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe
- Size 618KB
- Sample260719-dbbraacz8w
- SHA256 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7
- MD5 a2777f1f77ff6bf4f30a9ecf31b09141
- SHA1 9ed797a59522ae60ab55891eb159eb2d10466cfd
- SHA512 ddfebe4bb9a7ba56a7118af8db6d7a86f1109ce8bc2812b83a4c9b08a54fda35a45f42f36634e39f5efbd38a2cd14cb33682522df9e4491d35748dd6fab84a04
- SSDEEP 12288:GqXUHkUXe39sOkx2LIan5FAQjU/Lik8CQ3uEW:GjHPOSOkx2LFscUQPxW
- TLSH T103D47C31E201C03AD0A74576C6FE0BAFA5687D25431662C7A3D479362FF72D2AA3171E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 1932 255b7284 - 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 18 114.114.114.114 4884 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe Destination IP 19 223.5.5.5 4884 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe Destination IP 1 114.114.114.114 4884 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe Destination IP 4 223.5.5.5 4884 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe - Drops file in System32 directory 15 IoCs
description ioc Process File created C:\Windows\SysWOW64\255b7284 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 255b7284 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3EC845F33427F1C99AF855BE8930371C 255b7284 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 255b7284 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 255b7284 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 255b7284 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 255b7284 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 255b7284 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 255b7284 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3EC845F33427F1C99AF855BE8930371C 255b7284 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 255b7284 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 255b7284 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 255b7284 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 255b7284 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 255b7284 -
resource yara_rule behavioral2/memory/4884-0-0x0000000000430000-0x00000000004B9000-memory.dmp upx behavioral2/files/0x000800000001b871-2.dat upx behavioral2/memory/1932-3-0x0000000000B90000-0x0000000000C19000-memory.dmp upx behavioral2/memory/4884-13-0x0000000000430000-0x00000000004B9000-memory.dmp upx behavioral2/memory/1932-15-0x0000000000B90000-0x0000000000C19000-memory.dmp upx behavioral2/memory/4884-33-0x0000000000430000-0x00000000004B9000-memory.dmp upx behavioral2/memory/1932-34-0x0000000000B90000-0x0000000000C19000-memory.dmp upx behavioral2/memory/1932-49-0x0000000000B90000-0x0000000000C19000-memory.dmp upx behavioral2/memory/4884-50-0x0000000000430000-0x00000000004B9000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\211398 255b7284 File opened for modification C:\Windows\539da8 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.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 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 255b7284 - 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 255b7284 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 255b7284 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 255b7284 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 255b7284 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 255b7284 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 255b7284 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 255b7284 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 255b7284 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 255b7284 - Suspicious behavior: EnumeratesProcesses 22 IoCs
pid Process 1932 255b7284 1932 255b7284 1932 255b7284 1932 255b7284 1932 255b7284 1932 255b7284 1932 255b7284 1932 255b7284 4884 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe 4884 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe 4884 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe 4884 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe 4884 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe 4884 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe 4884 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe 4884 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe 4884 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe 4884 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe 4884 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe 4884 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe 4884 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe 4884 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4884 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe Token: SeTcbPrivilege 4884 b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe Token: SeDebugPrivilege 1932 255b7284 Token: SeTcbPrivilege 1932 255b7284
Processes
-
C:\Users\Admin\AppData\Local\Temp\b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.exe"C:\Users\Admin\AppData\Local\Temp\b4c4b2dbd6509e126cee5b1b8ed4b0b1ee40963f2c201ee3ac0f89ddf3e37ee7.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:4884
-
C:\Windows\Syswow64\255b7284C:\Windows\Syswow64\255b72841⤵
- 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:1932
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\255b7284
- Size 618KB
- SHA256 f3439c1c0b8bf8f4b4095ed704a8350b58fdcf552fcb1c87ec08f69e59f456ef
- MD5 ba3d4d1984ab328c9dd5fb387b7b377c
- SHA1 42c3a0892ee6e9d28a73ee88f62c2eb7b00d61e7
- SHA512 55da1b5987cd3fb0f0a1b77658ce88e3ede430cd0655483c219454b15d7c9100ee050cfa357b3a3c11d6308410a70681b550446acb715196361086a3db75624c
- SSDEEP 12288:kqXUHkUXe39sOkx2LIan5FAQjU/Lik8CQ3uEW:kjHPOSOkx2LFscUQPxW
- TLSH T142D47C31E201C03AD0A74576C6FE0BAFA5687D25431662C7A3D479362FF72D2AA3171E
- MD5 SHA1 SHA512 SSDEEP TLSH