Analysis
- max time kernel
149s - max time network
151s - 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, 10:24
Behavioral task
behavioral1
Sample
b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac.exe
Resource
win10v2004-20260130-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac.exe
- Size 766KB
- Sample260415-mfb3aaby5l
- SHA256 b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac
- MD5 52171b67e8895edd514db20b2db0319e
- SHA1 8284380664e547c9bdc85b81f09385b0070be935
- SHA512 c0f3eab60caa29e3aecb31cbc3715468281891d6f27b8fb957859fd9075f6b49fc5b94a463ff000c7cc59f19fb8e46987b589d92067753e427f2802100291926
- SSDEEP 12288:+SvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/Liw:9vO2xJKRw2kOkx2LFRvcUV
- TLSH T176F45A31E241C03AD0A74576C6FA0BAFE564BD25531155CBA3C43A6A2FB36D2BE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 6140 d4f3f83c - 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 1 114.114.114.114 5904 b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac.exe Destination IP 2 223.5.5.5 5904 b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac.exe Destination IP 6 114.114.114.114 5904 b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac.exe Destination IP 7 223.5.5.5 5904 b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac.exe Destination IP 54 114.114.114.114 5904 b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac.exe Destination IP 55 223.5.5.5 5904 b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac.exe - Drops file in System32 directory 13 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft d4f3f83c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content d4f3f83c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 d4f3f83c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 d4f3f83c File created C:\Windows\SysWOW64\d4f3f83c b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 d4f3f83c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies d4f3f83c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 d4f3f83c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache d4f3f83c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData d4f3f83c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 d4f3f83c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 d4f3f83c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE d4f3f83c -
resource yara_rule behavioral2/memory/5904-0-0x00000000002B0000-0x000000000033C000-memory.dmp upx behavioral2/files/0x001a00000002b480-2.dat upx behavioral2/memory/6140-4-0x0000000000AE0000-0x0000000000B6C000-memory.dmp upx behavioral2/memory/5904-10-0x00000000002B0000-0x000000000033C000-memory.dmp upx behavioral2/memory/6140-12-0x0000000000AE0000-0x0000000000B6C000-memory.dmp upx behavioral2/memory/6140-40-0x0000000000AE0000-0x0000000000B6C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\691e78 d4f3f83c File opened for modification C:\Windows\651420 b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac.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 b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language d4f3f83c - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ d4f3f83c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" d4f3f83c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" d4f3f83c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" d4f3f83c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing d4f3f83c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix d4f3f83c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" d4f3f83c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" d4f3f83c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" d4f3f83c - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 6140 d4f3f83c 6140 d4f3f83c 6140 d4f3f83c 6140 d4f3f83c 6140 d4f3f83c 6140 d4f3f83c 6140 d4f3f83c 6140 d4f3f83c 5904 b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac.exe 5904 b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac.exe 5904 b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac.exe 5904 b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac.exe 5904 b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac.exe 5904 b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 5904 b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac.exe Token: SeTcbPrivilege 5904 b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac.exe Token: SeDebugPrivilege 6140 d4f3f83c Token: SeTcbPrivilege 6140 d4f3f83c
Processes
-
C:\Users\Admin\AppData\Local\Temp\b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac.exe"C:\Users\Admin\AppData\Local\Temp\b8be1bda7bb3a019af51642c57de676acad8beabd68c1f399f3813744fd67eac.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:5904
-
C:\Windows\Syswow64\d4f3f83cC:\Windows\Syswow64\d4f3f83c1⤵
- 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:6140
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Windows\SysWOW64\d4f3f83c
- Size 766KB
- SHA256 63a2c5f3529be49b39572dd6c4b229d34418896c4cad91de0f11621a8ae43228
- MD5 b76ca9ddd0071fc0f62d0c30f9fce193
- SHA1 f2d74099524df6d7076e7cb3ab68011a27686235
- SHA512 7a6151eaabddeb644cb4020163a992bfd7e69866dc0b9fef8567fcf2ccc3867e723c4aa3197a9aa330cc76369fc40f7671e43dea3fef4e93f37ebdf8a270c803
- SSDEEP 12288:iSvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/Liw:pvO2xJKRw2kOkx2LFRvcUV
- TLSH T14DF45A31E241C03AD0A74576C6FA0BAFE564BD25531155CBA3C43A6A2FB36D2BE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH