Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
16/08/2026, 14:00
Behavioral task
behavioral1
Sample
1a40d11ba9748d1bd783b845f41e162edea897ae38158dc78e7f69ef1ee5ed83.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target 1a40d11ba9748d1bd783b845f41e162edea897ae38158dc78e7f69ef1ee5ed83.exe
- Size 560KB
- Sample260816-rayfjscm21
- SHA256 1a40d11ba9748d1bd783b845f41e162edea897ae38158dc78e7f69ef1ee5ed83
- MD5 81f10d6dae9329d18fb6a50c86620e88
- SHA1 a50b1d4153feb53f52257fd5f61a46c621b6ae8c
- SHA512 05e8c973b1a9ea4ee0c30463dadfef1a58baec82f9aa9adcc6f6413fb89f54a724723cf2b20809316f7e2fc003819fa0415e508954899c3333a569eb1dc8ba6c
- SSDEEP 6144:Cgye71cE4poJTqvpQLXNKFyLWD1nFairGcEOkCybEaQRuy8K:CI7OE4kopQzNKFyLWDHsOkxHy
- TLSH T18AC48C2AB690C076C4B7D534C5E197AAEAB17432372449CFA3D0075A1F237E2BA3570E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 2008 f2af8f8c - 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 3 114.114.114.114 4332 1a40d11ba9748d1bd783b845f41e162edea897ae38158dc78e7f69ef1ee5ed83.exe Destination IP 6 223.5.5.5 4332 1a40d11ba9748d1bd783b845f41e162edea897ae38158dc78e7f69ef1ee5ed83.exe Destination IP 28 114.114.114.114 4332 1a40d11ba9748d1bd783b845f41e162edea897ae38158dc78e7f69ef1ee5ed83.exe Destination IP 29 223.5.5.5 4332 1a40d11ba9748d1bd783b845f41e162edea897ae38158dc78e7f69ef1ee5ed83.exe - Drops file in System32 directory 13 IoCs
description ioc Process File created C:\Windows\SysWOW64\f2af8f8c 1a40d11ba9748d1bd783b845f41e162edea897ae38158dc78e7f69ef1ee5ed83.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache f2af8f8c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 f2af8f8c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content f2af8f8c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 f2af8f8c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 f2af8f8c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE f2af8f8c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies f2af8f8c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 f2af8f8c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft f2af8f8c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData f2af8f8c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 f2af8f8c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 f2af8f8c -
resource yara_rule behavioral1/memory/4332-0-0x00000000004C0000-0x000000000054C000-memory.dmp upx behavioral1/files/0x000a0000000242b6-3.dat upx behavioral1/memory/2008-4-0x0000000000050000-0x00000000000DC000-memory.dmp upx behavioral1/memory/4332-10-0x00000000004C0000-0x000000000054C000-memory.dmp upx behavioral1/memory/2008-11-0x0000000000050000-0x00000000000DC000-memory.dmp upx behavioral1/memory/2008-22-0x0000000000050000-0x00000000000DC000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\2260b0 f2af8f8c File opened for modification C:\Windows\4a2a58 1a40d11ba9748d1bd783b845f41e162edea897ae38158dc78e7f69ef1ee5ed83.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 1a40d11ba9748d1bd783b845f41e162edea897ae38158dc78e7f69ef1ee5ed83.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language f2af8f8c - 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 f2af8f8c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" f2af8f8c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" f2af8f8c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" f2af8f8c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" f2af8f8c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ f2af8f8c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" f2af8f8c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" f2af8f8c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing f2af8f8c - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 2008 f2af8f8c 2008 f2af8f8c 2008 f2af8f8c 2008 f2af8f8c 2008 f2af8f8c 2008 f2af8f8c 2008 f2af8f8c 2008 f2af8f8c 4332 1a40d11ba9748d1bd783b845f41e162edea897ae38158dc78e7f69ef1ee5ed83.exe 4332 1a40d11ba9748d1bd783b845f41e162edea897ae38158dc78e7f69ef1ee5ed83.exe 4332 1a40d11ba9748d1bd783b845f41e162edea897ae38158dc78e7f69ef1ee5ed83.exe 4332 1a40d11ba9748d1bd783b845f41e162edea897ae38158dc78e7f69ef1ee5ed83.exe 4332 1a40d11ba9748d1bd783b845f41e162edea897ae38158dc78e7f69ef1ee5ed83.exe 4332 1a40d11ba9748d1bd783b845f41e162edea897ae38158dc78e7f69ef1ee5ed83.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4332 1a40d11ba9748d1bd783b845f41e162edea897ae38158dc78e7f69ef1ee5ed83.exe Token: SeTcbPrivilege 4332 1a40d11ba9748d1bd783b845f41e162edea897ae38158dc78e7f69ef1ee5ed83.exe Token: SeDebugPrivilege 2008 f2af8f8c Token: SeTcbPrivilege 2008 f2af8f8c
Processes
-
C:\Users\Admin\AppData\Local\Temp\1a40d11ba9748d1bd783b845f41e162edea897ae38158dc78e7f69ef1ee5ed83.exe"C:\Users\Admin\AppData\Local\Temp\1a40d11ba9748d1bd783b845f41e162edea897ae38158dc78e7f69ef1ee5ed83.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:4332
-
C:\Windows\Syswow64\f2af8f8cC:\Windows\Syswow64\f2af8f8c1⤵
- 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:2008
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\f2af8f8c
- Size 560KB
- SHA256 15eab05a94857c0b626474844e965973ab7cfdc25ec39cc4d4d339cd7a6f6548
- MD5 d360248675941cce8841e355cad3b0b2
- SHA1 d5e3a14e40b3990ef5a45904fc88d5e9383a8944
- SHA512 7fafcda7a85eb2c8a331fb152db3e16d448acb71f65e5ce4b7b16785dfd0a85a0782db6fa9204afac7c2ae82787a7514549cec072b7c000b25c20fe101ceb22f
- SSDEEP 6144:Fgye71cE4poJTqvpQLXNKFyLWD1nFairGcEOkCybEaQRuy8K:FI7OE4kopQzNKFyLWDHsOkxHy
- TLSH T1D2C48C2AB690C076C4B7D534C5E197AAEAB17432372449CFA3D0075A1F237E2BA3570E
- MD5 SHA1 SHA512 SSDEEP TLSH