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
22/04/2026, 20:59
Behavioral task
behavioral1
Sample
5850971392d9bb8b62d0fc96e4b864b47f7c68c0af96562e8f3f117e46f29874.exe
Resource
win10v2004-20260130-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target 5850971392d9bb8b62d0fc96e4b864b47f7c68c0af96562e8f3f117e46f29874.exe
- Size 560KB
- Sample260422-zsys2aew9k
- SHA256 5850971392d9bb8b62d0fc96e4b864b47f7c68c0af96562e8f3f117e46f29874
- MD5 40139f24a6612d4a8b5f82b4b8e9b6a0
- SHA1 3a2479ff2c5589fd1c98f8d02b3394fd83b07f7a
- SHA512 c8057eb1952d3d8be37f764025fabf2fdfbbf1faeac62492c1bc5d8c5c340a9ed8fa7434ef8c18cf064638dc8c718a27227fb538a31a5c67b2426c45f9ecb6a8
- SSDEEP 6144:zWVrC1c2oonALgPLj7vf1LKlyIFVirGcEOkCybEaQRXr9HNdvOa+y8K:zkCO2zVPX7vf1LKlIsOkx2LIa+y
- TLSH T13DC47C2AF6A0C036C4779574C4A257AAFFB1B42127204ACFA390475A1F637E2BE7531D
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 2432 6ef6f91f - 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 13 223.5.5.5 3896 5850971392d9bb8b62d0fc96e4b864b47f7c68c0af96562e8f3f117e46f29874.exe Destination IP 1 114.114.114.114 3896 5850971392d9bb8b62d0fc96e4b864b47f7c68c0af96562e8f3f117e46f29874.exe Destination IP 2 223.5.5.5 3896 5850971392d9bb8b62d0fc96e4b864b47f7c68c0af96562e8f3f117e46f29874.exe Destination IP 12 114.114.114.114 3896 5850971392d9bb8b62d0fc96e4b864b47f7c68c0af96562e8f3f117e46f29874.exe - Drops file in System32 directory 15 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 6ef6f91f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 6ef6f91f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 6ef6f91f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 6ef6f91f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 6ef6f91f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 6ef6f91f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 6ef6f91f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 6ef6f91f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 6ef6f91f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 6ef6f91f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 6ef6f91f File created C:\Windows\SysWOW64\6ef6f91f 5850971392d9bb8b62d0fc96e4b864b47f7c68c0af96562e8f3f117e46f29874.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 6ef6f91f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 6ef6f91f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 6ef6f91f -
resource yara_rule behavioral2/memory/3896-0-0x0000000000550000-0x00000000005DC000-memory.dmp upx behavioral2/files/0x002400000002b108-2.dat upx behavioral2/memory/2432-4-0x0000000000B60000-0x0000000000BEC000-memory.dmp upx behavioral2/memory/3896-10-0x0000000000550000-0x00000000005DC000-memory.dmp upx behavioral2/memory/2432-11-0x0000000000B60000-0x0000000000BEC000-memory.dmp upx behavioral2/memory/2432-24-0x0000000000B60000-0x0000000000BEC000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\29a300 6ef6f91f File opened for modification C:\Windows\42b370 5850971392d9bb8b62d0fc96e4b864b47f7c68c0af96562e8f3f117e46f29874.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 5850971392d9bb8b62d0fc96e4b864b47f7c68c0af96562e8f3f117e46f29874.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 6ef6f91f - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 6ef6f91f Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 6ef6f91f Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 6ef6f91f Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 6ef6f91f Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 6ef6f91f Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 6ef6f91f Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 6ef6f91f Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix 6ef6f91f Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 6ef6f91f - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 2432 6ef6f91f 2432 6ef6f91f 2432 6ef6f91f 2432 6ef6f91f 2432 6ef6f91f 2432 6ef6f91f 2432 6ef6f91f 2432 6ef6f91f 3896 5850971392d9bb8b62d0fc96e4b864b47f7c68c0af96562e8f3f117e46f29874.exe 3896 5850971392d9bb8b62d0fc96e4b864b47f7c68c0af96562e8f3f117e46f29874.exe 3896 5850971392d9bb8b62d0fc96e4b864b47f7c68c0af96562e8f3f117e46f29874.exe 3896 5850971392d9bb8b62d0fc96e4b864b47f7c68c0af96562e8f3f117e46f29874.exe 3896 5850971392d9bb8b62d0fc96e4b864b47f7c68c0af96562e8f3f117e46f29874.exe 3896 5850971392d9bb8b62d0fc96e4b864b47f7c68c0af96562e8f3f117e46f29874.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 3896 5850971392d9bb8b62d0fc96e4b864b47f7c68c0af96562e8f3f117e46f29874.exe Token: SeTcbPrivilege 3896 5850971392d9bb8b62d0fc96e4b864b47f7c68c0af96562e8f3f117e46f29874.exe Token: SeDebugPrivilege 2432 6ef6f91f Token: SeTcbPrivilege 2432 6ef6f91f
Processes
-
C:\Users\Admin\AppData\Local\Temp\5850971392d9bb8b62d0fc96e4b864b47f7c68c0af96562e8f3f117e46f29874.exe"C:\Users\Admin\AppData\Local\Temp\5850971392d9bb8b62d0fc96e4b864b47f7c68c0af96562e8f3f117e46f29874.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:3896
-
C:\Windows\Syswow64\6ef6f91fC:\Windows\Syswow64\6ef6f91f1⤵
- 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:2432
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\6ef6f91f
- Size 560KB
- SHA256 bcd6ad7b9e426e064df0e549ccf7854a3ddf48a0f4a617c198708f00afc8ebd7
- MD5 caffeee2c0696eb4f0350d2e48a24581
- SHA1 29cb13e89e21e3d0e4a286440ef1b0358b080292
- SHA512 a2d9a9dc3c60b157692ab8e8bdb75ba4e750f7f025361e582b437ae375d270945b6a38cc3cde552dbea3311f4e49f16bff44096e55792c50f06e6dd6ca916ebb
- SSDEEP 6144:fWVrC1c2oonALgPLj7vf1LKlyIFVirGcEOkCybEaQRXr9HNdvOa+y8K:fkCO2zVPX7vf1LKlIsOkx2LIa+y
- TLSH T1E9C47C2AF6A0C036C4779574C4A257AAFFB1B42127204ACFA390475A1F637E2BE7531D
- MD5 SHA1 SHA512 SSDEEP TLSH