Analysis
- max time kernel
149s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
28/05/2026, 11:03
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
4d911c1ca94ca434bd1898dfd36a254a0d47fb5a6a7dd3ab966135bc1578731f.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
4d911c1ca94ca434bd1898dfd36a254a0d47fb5a6a7dd3ab966135bc1578731f.exe
Resource
win11-20260513-en
windows11-21h2-x64
8 signatures
150 seconds
General
- Target 4d911c1ca94ca434bd1898dfd36a254a0d47fb5a6a7dd3ab966135bc1578731f.exe
- Size 4.0MB
- Sample260528-m56cesdv2p
- SHA256 4d911c1ca94ca434bd1898dfd36a254a0d47fb5a6a7dd3ab966135bc1578731f
- MD5 6e08f8dca2e8405d1086c4bc73f09081
- SHA1 85f5b280b9f9f4a355de944231c7b06fb2a11ac5
- SHA512 d6f0bd357e05a4f0ce257bf121d517c94ac45d60ea3ccc29f2e37233a69f05b83d75757d5e39053c63f496dbc79ed57c54f1f16c48061d30c52d2c7d329b8749
- SSDEEP 98304:RnKl2qOb2lP8ssYoJxKkyWsM0r1QnfKHV0Fe7:RCNDtojKL2Kqo7
- TLSH T1A316CF11F7A1C036C49701718D7A876EA678BD214B258AC7B3C47B6E5FB23D1AE3530A
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 3548 b31ff41c - 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 1228 4d911c1ca94ca434bd1898dfd36a254a0d47fb5a6a7dd3ab966135bc1578731f.exe Destination IP 2 223.5.5.5 1228 4d911c1ca94ca434bd1898dfd36a254a0d47fb5a6a7dd3ab966135bc1578731f.exe Destination IP 14 114.114.114.114 1228 4d911c1ca94ca434bd1898dfd36a254a0d47fb5a6a7dd3ab966135bc1578731f.exe Destination IP 15 223.5.5.5 1228 4d911c1ca94ca434bd1898dfd36a254a0d47fb5a6a7dd3ab966135bc1578731f.exe - Drops file in System32 directory 15 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft b31ff41c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData b31ff41c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 b31ff41c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content b31ff41c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 b31ff41c File created C:\Windows\SysWOW64\b31ff41c 4d911c1ca94ca434bd1898dfd36a254a0d47fb5a6a7dd3ab966135bc1578731f.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies b31ff41c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 b31ff41c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 b31ff41c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 b31ff41c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 b31ff41c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE b31ff41c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache b31ff41c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 b31ff41c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 b31ff41c - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\3cbe38 b31ff41c File opened for modification C:\Windows\150618 4d911c1ca94ca434bd1898dfd36a254a0d47fb5a6a7dd3ab966135bc1578731f.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 4d911c1ca94ca434bd1898dfd36a254a0d47fb5a6a7dd3ab966135bc1578731f.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b31ff41c - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ b31ff41c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" b31ff41c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" b31ff41c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" b31ff41c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing b31ff41c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" b31ff41c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix b31ff41c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" b31ff41c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" b31ff41c - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 3548 b31ff41c 3548 b31ff41c 3548 b31ff41c 3548 b31ff41c 3548 b31ff41c 3548 b31ff41c 3548 b31ff41c 3548 b31ff41c 1228 4d911c1ca94ca434bd1898dfd36a254a0d47fb5a6a7dd3ab966135bc1578731f.exe 1228 4d911c1ca94ca434bd1898dfd36a254a0d47fb5a6a7dd3ab966135bc1578731f.exe 1228 4d911c1ca94ca434bd1898dfd36a254a0d47fb5a6a7dd3ab966135bc1578731f.exe 1228 4d911c1ca94ca434bd1898dfd36a254a0d47fb5a6a7dd3ab966135bc1578731f.exe 1228 4d911c1ca94ca434bd1898dfd36a254a0d47fb5a6a7dd3ab966135bc1578731f.exe 1228 4d911c1ca94ca434bd1898dfd36a254a0d47fb5a6a7dd3ab966135bc1578731f.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 1228 4d911c1ca94ca434bd1898dfd36a254a0d47fb5a6a7dd3ab966135bc1578731f.exe Token: SeTcbPrivilege 1228 4d911c1ca94ca434bd1898dfd36a254a0d47fb5a6a7dd3ab966135bc1578731f.exe Token: SeDebugPrivilege 3548 b31ff41c Token: SeTcbPrivilege 3548 b31ff41c
Processes
-
C:\Users\Admin\AppData\Local\Temp\4d911c1ca94ca434bd1898dfd36a254a0d47fb5a6a7dd3ab966135bc1578731f.exe"C:\Users\Admin\AppData\Local\Temp\4d911c1ca94ca434bd1898dfd36a254a0d47fb5a6a7dd3ab966135bc1578731f.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:1228
-
C:\Windows\Syswow64\b31ff41cC:\Windows\Syswow64\b31ff41c1⤵
- 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:3548
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\b31ff41c
- Size 4.0MB
- SHA256 00e6ec78757805281e4dfa3c3a651efcd920921935e6d4f77c9befb95c566e12
- MD5 c18d3c3b28eec0bf4fc2b16c109f4b7e
- SHA1 ad8f503b8da7a6774ac99d52803329569fab827f
- SHA512 6a13088789f323b684252984859d1c3aa50b954e861c78471c90f7628f2de0326cf5d12a9c7ccb9dfdd35831a016adf0a08b33209b55e33de9a52f57bf3a24e9
- SSDEEP 98304:7nKl2qOb2lP8ssYoJxKkyWsM0r1QnfKHV0Fe7:7CNDtojKL2Kqo7
- TLSH T1B316CF11F7A1C036C49701718D7A876EA678BD214B258AC7B3C47B6E5FB23D1AE3530A
- MD5 SHA1 SHA512 SSDEEP TLSH