Analysis
- max time kernel
149s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
31/05/2026, 11:27
Behavioral task
behavioral1
Sample
a24f03ef59d6b904992038a79e1c3575f26829f1990bc4dac87cc76f893ebf1a.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target a24f03ef59d6b904992038a79e1c3575f26829f1990bc4dac87cc76f893ebf1a.exe
- Size 384KB
- Sample260531-nktcsshw7j
- SHA256 a24f03ef59d6b904992038a79e1c3575f26829f1990bc4dac87cc76f893ebf1a
- MD5 a88d43cb9ce23bc6e71bb158c64d2ee1
- SHA1 c95f51b6a19470fcd48a9badc4bd4c7753f6ca4b
- SHA512 3753122fa42fa3306ff4c41c12467cdffbeb24cd10d60d4e270d0270e02e718f73676fbc5d8eb8ed0358395b19b35ba1ff16e5a7975ff981469a61580e876725
- SSDEEP 6144:wl51orRJXlDixHkUXe35rGcEOkCybEaQRXr9HNdvOan5R2:EqXUHkUXe39sOkx2LIan5g
- TLSH T186849D22F3518036C1A78672C7B70F9AF7A5BD18831253CB5340B56A2FB32D2AE35719
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 3520 f5ee73dd - 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 28 114.114.114.114 4284 a24f03ef59d6b904992038a79e1c3575f26829f1990bc4dac87cc76f893ebf1a.exe Destination IP 29 223.5.5.5 4284 a24f03ef59d6b904992038a79e1c3575f26829f1990bc4dac87cc76f893ebf1a.exe Destination IP 1 114.114.114.114 4284 a24f03ef59d6b904992038a79e1c3575f26829f1990bc4dac87cc76f893ebf1a.exe Destination IP 2 223.5.5.5 4284 a24f03ef59d6b904992038a79e1c3575f26829f1990bc4dac87cc76f893ebf1a.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\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 f5ee73dd File created C:\Windows\SysWOW64\f5ee73dd a24f03ef59d6b904992038a79e1c3575f26829f1990bc4dac87cc76f893ebf1a.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE f5ee73dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData f5ee73dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 f5ee73dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies f5ee73dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 f5ee73dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content f5ee73dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 f5ee73dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 f5ee73dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 f5ee73dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 f5ee73dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft f5ee73dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache f5ee73dd File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 f5ee73dd -
resource yara_rule behavioral2/memory/4284-0-0x0000000000F50000-0x0000000000FD9000-memory.dmp upx behavioral2/files/0x000900000002a8ed-2.dat upx behavioral2/memory/3520-4-0x0000000000E30000-0x0000000000EB9000-memory.dmp upx behavioral2/memory/4284-10-0x0000000000F50000-0x0000000000FD9000-memory.dmp upx behavioral2/memory/3520-12-0x0000000000E30000-0x0000000000EB9000-memory.dmp upx behavioral2/memory/4284-32-0x0000000000F50000-0x0000000000FD9000-memory.dmp upx behavioral2/memory/3520-33-0x0000000000E30000-0x0000000000EB9000-memory.dmp upx behavioral2/memory/4284-42-0x0000000000F50000-0x0000000000FD9000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\3c4380 f5ee73dd File opened for modification C:\Windows\4957f8 a24f03ef59d6b904992038a79e1c3575f26829f1990bc4dac87cc76f893ebf1a.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 a24f03ef59d6b904992038a79e1c3575f26829f1990bc4dac87cc76f893ebf1a.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language f5ee73dd - 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\Cookies\CachePrefix = "Cookie:" f5ee73dd Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" f5ee73dd Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" f5ee73dd Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" f5ee73dd Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing f5ee73dd Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix f5ee73dd Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ f5ee73dd Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" f5ee73dd Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" f5ee73dd - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 3520 f5ee73dd 3520 f5ee73dd 3520 f5ee73dd 3520 f5ee73dd 3520 f5ee73dd 3520 f5ee73dd 3520 f5ee73dd 3520 f5ee73dd 4284 a24f03ef59d6b904992038a79e1c3575f26829f1990bc4dac87cc76f893ebf1a.exe 4284 a24f03ef59d6b904992038a79e1c3575f26829f1990bc4dac87cc76f893ebf1a.exe 4284 a24f03ef59d6b904992038a79e1c3575f26829f1990bc4dac87cc76f893ebf1a.exe 4284 a24f03ef59d6b904992038a79e1c3575f26829f1990bc4dac87cc76f893ebf1a.exe 4284 a24f03ef59d6b904992038a79e1c3575f26829f1990bc4dac87cc76f893ebf1a.exe 4284 a24f03ef59d6b904992038a79e1c3575f26829f1990bc4dac87cc76f893ebf1a.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4284 a24f03ef59d6b904992038a79e1c3575f26829f1990bc4dac87cc76f893ebf1a.exe Token: SeTcbPrivilege 4284 a24f03ef59d6b904992038a79e1c3575f26829f1990bc4dac87cc76f893ebf1a.exe Token: SeDebugPrivilege 3520 f5ee73dd Token: SeTcbPrivilege 3520 f5ee73dd
Processes
-
C:\Users\Admin\AppData\Local\Temp\a24f03ef59d6b904992038a79e1c3575f26829f1990bc4dac87cc76f893ebf1a.exe"C:\Users\Admin\AppData\Local\Temp\a24f03ef59d6b904992038a79e1c3575f26829f1990bc4dac87cc76f893ebf1a.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:4284
-
C:\Windows\Syswow64\f5ee73ddC:\Windows\Syswow64\f5ee73dd1⤵
- 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:3520
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\f5ee73dd
- Size 384KB
- SHA256 2aa66dafb151290e4224a29013c0c306ca9b79f395cca96c2da6630afd6a17ba
- MD5 a2f32592a4d38b5cd83fe73d508df7e8
- SHA1 4c980fd5ec1238c522608440f122751ecf36b314
- SHA512 541e85c24fba9616f06f38eb62a0fce7698d8e88c65be5863b448440871f9b04d6b037351a445d9912639c312b484867df80bbddeb7369f33b45b94442a712b3
- SSDEEP 6144:Xl51orRJXlDixHkUXe35rGcEOkCybEaQRXr9HNdvOan5R2:5qXUHkUXe39sOkx2LIan5g
- TLSH T149849D22F351803AC1978672C7B70F9AF7A5BD18831253CB5344B56A2FB32D2AE35719
- MD5 SHA1 SHA512 SSDEEP TLSH