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
29/05/2026, 03:43
Behavioral task
behavioral1
Sample
efd631f65fa6ea15ed98d83d75593501891c6f6ce41b8a70607403ecc8ca07ef.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
10 signatures
150 seconds
Behavioral task
behavioral2
Sample
efd631f65fa6ea15ed98d83d75593501891c6f6ce41b8a70607403ecc8ca07ef.exe
Resource
win11-20260513-en
windows11-21h2-x64
10 signatures
150 seconds
General
- Target efd631f65fa6ea15ed98d83d75593501891c6f6ce41b8a70607403ecc8ca07ef.exe
- Size 2.5MB
- Sample260529-eadpxsct81
- SHA256 efd631f65fa6ea15ed98d83d75593501891c6f6ce41b8a70607403ecc8ca07ef
- MD5 c350f74d1f5d81638761e36e4a3e6482
- SHA1 31ba3242cdecf18332bf64cc2386b7e6bd348217
- SHA512 49ec7052b975708023665bcb73d5fa0b7c8625b7b91da39e9e051b4155f15174d8f0b565ea8849a7cb999f612adc169f29231fdc981ce88cf33c43db2b176608
- SSDEEP 49152:OHHKe2WQX56/OJdJCXDrsOFZMjHfUTGkQy5QZuTtN:OnKGEkOhCXHHFZMjHfUKkVWsT
- TLSH T1CCC58E31E6818136D1B34671C6FA57BBA5247C211721A5CFA3C87A2A1F736D3AE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 5108 16e1312c - 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 4932 efd631f65fa6ea15ed98d83d75593501891c6f6ce41b8a70607403ecc8ca07ef.exe Destination IP 2 223.5.5.5 4932 efd631f65fa6ea15ed98d83d75593501891c6f6ce41b8a70607403ecc8ca07ef.exe Destination IP 12 114.114.114.114 4932 efd631f65fa6ea15ed98d83d75593501891c6f6ce41b8a70607403ecc8ca07ef.exe Destination IP 13 223.5.5.5 4932 efd631f65fa6ea15ed98d83d75593501891c6f6ce41b8a70607403ecc8ca07ef.exe - Drops file in System32 directory 19 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 16e1312c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\AAD646CB44373074ADE741C38400E7E1 16e1312c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\AAD646CB44373074ADE741C38400E7E1 16e1312c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 16e1312c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 16e1312c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 16e1312c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 16e1312c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3EC845F33427F1C99AF855BE8930371C 16e1312c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 16e1312c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 16e1312c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 16e1312c File created C:\Windows\SysWOW64\16e1312c efd631f65fa6ea15ed98d83d75593501891c6f6ce41b8a70607403ecc8ca07ef.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 16e1312c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 16e1312c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 16e1312c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 16e1312c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3EC845F33427F1C99AF855BE8930371C 16e1312c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 16e1312c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 16e1312c -
resource yara_rule behavioral2/memory/4932-0-0x0000000000CD0000-0x0000000000D5C000-memory.dmp upx behavioral2/files/0x001000000002af1b-2.dat upx behavioral2/memory/5108-4-0x0000000000D50000-0x0000000000DDC000-memory.dmp upx behavioral2/memory/4932-12-0x0000000000CD0000-0x0000000000D5C000-memory.dmp upx behavioral2/memory/5108-13-0x0000000000D50000-0x0000000000DDC000-memory.dmp upx behavioral2/memory/5108-33-0x0000000000D50000-0x0000000000DDC000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\577368 16e1312c File opened for modification C:\Windows\547008 efd631f65fa6ea15ed98d83d75593501891c6f6ce41b8a70607403ecc8ca07ef.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 efd631f65fa6ea15ed98d83d75593501891c6f6ce41b8a70607403ecc8ca07ef.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 16e1312c - 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 16e1312c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 16e1312c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 16e1312c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 16e1312c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 16e1312c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 16e1312c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 16e1312c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 16e1312c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 16e1312c - Modifies system certificate store 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\1F24C630CDA418EF2069FFAD4FDD5F463A1B69AA 16e1312c Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\1F24C630CDA418EF2069FFAD4FDD5F463A1B69AA\Blob = 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 16e1312c - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 5108 16e1312c 5108 16e1312c 5108 16e1312c 5108 16e1312c 5108 16e1312c 5108 16e1312c 5108 16e1312c 5108 16e1312c 4932 efd631f65fa6ea15ed98d83d75593501891c6f6ce41b8a70607403ecc8ca07ef.exe 4932 efd631f65fa6ea15ed98d83d75593501891c6f6ce41b8a70607403ecc8ca07ef.exe 4932 efd631f65fa6ea15ed98d83d75593501891c6f6ce41b8a70607403ecc8ca07ef.exe 4932 efd631f65fa6ea15ed98d83d75593501891c6f6ce41b8a70607403ecc8ca07ef.exe 4932 efd631f65fa6ea15ed98d83d75593501891c6f6ce41b8a70607403ecc8ca07ef.exe 4932 efd631f65fa6ea15ed98d83d75593501891c6f6ce41b8a70607403ecc8ca07ef.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4932 efd631f65fa6ea15ed98d83d75593501891c6f6ce41b8a70607403ecc8ca07ef.exe Token: SeTcbPrivilege 4932 efd631f65fa6ea15ed98d83d75593501891c6f6ce41b8a70607403ecc8ca07ef.exe Token: SeDebugPrivilege 5108 16e1312c Token: SeTcbPrivilege 5108 16e1312c
Processes
-
C:\Users\Admin\AppData\Local\Temp\efd631f65fa6ea15ed98d83d75593501891c6f6ce41b8a70607403ecc8ca07ef.exe"C:\Users\Admin\AppData\Local\Temp\efd631f65fa6ea15ed98d83d75593501891c6f6ce41b8a70607403ecc8ca07ef.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:4932
-
C:\Windows\Syswow64\16e1312cC:\Windows\Syswow64\16e1312c1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5108
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\16e1312c
- Size 2.5MB
- SHA256 11e731da54959fc3957e535143b72917dcaa14fc34dee3d5c5728148d1319c97
- MD5 3c3a7a2319738b9fd4229ea7682ac63a
- SHA1 b66b7ca2a11e4e56a11056f480114767f09d103d
- SHA512 d967323ff1f6b7b858f698f90e9b60981ad183e2e7921343079ab3b7537a0d2564361311612893fd4cd6680662dad3cdd7fa833c66684ae9056966e11f0c5b8a
- SSDEEP 49152:mHHKe2WQX56/OJdJCXDrsOFZMjHfUTGkQy5QZuTtN:mnKGEkOhCXHHFZMjHfUKkVWsT
- TLSH T1F8C58E31E6818136D1B34671C6FA57BBA5247C211721A5CFA3C87A2A1F736D3AE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH