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
18/07/2026, 19:52
Behavioral task
behavioral1
Sample
ef81940cf2ed3568c73d6f35951e0b6904bd16b815be2464fefddedecd7ddd2d.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target ef81940cf2ed3568c73d6f35951e0b6904bd16b815be2464fefddedecd7ddd2d.exe
- Size 1.4MB
- Sample260718-ylldpabt2q
- SHA256 ef81940cf2ed3568c73d6f35951e0b6904bd16b815be2464fefddedecd7ddd2d
- MD5 03353d23f30fc12284b6a2e2d631690c
- SHA1 ff47d57d44615fa7e2b45c8160e63e5d97db97a2
- SHA512 083bb7aa7924e4107c15fca97866a84d6e2cb92a39c0580960180e6f88142ca8e4716f6110da0627be8d7b4abde1857ff61122ae574ffa30314ad8f5eeba8fc4
- SSDEEP 24576:MjHPOSOkx2LFscU6UQOJdBqsCPhH9Do2sOfNZMjHfUr:MTGkQy56/OJdJCXDrsOFZMjHfUr
- TLSH T1A6658E31AAC14132E2B3867186FA56F6A5257C222711E5CF62C97B291E737D3ED3070E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 456 aa5a49c0 - 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 3 114.114.114.114 640 ef81940cf2ed3568c73d6f35951e0b6904bd16b815be2464fefddedecd7ddd2d.exe Destination IP 6 223.5.5.5 640 ef81940cf2ed3568c73d6f35951e0b6904bd16b815be2464fefddedecd7ddd2d.exe Destination IP 45 114.114.114.114 640 ef81940cf2ed3568c73d6f35951e0b6904bd16b815be2464fefddedecd7ddd2d.exe Destination IP 47 223.5.5.5 640 ef81940cf2ed3568c73d6f35951e0b6904bd16b815be2464fefddedecd7ddd2d.exe - Drops file in System32 directory 15 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 aa5a49c0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache aa5a49c0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content aa5a49c0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 aa5a49c0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 aa5a49c0 File created C:\Windows\SysWOW64\aa5a49c0 ef81940cf2ed3568c73d6f35951e0b6904bd16b815be2464fefddedecd7ddd2d.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies aa5a49c0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData aa5a49c0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 aa5a49c0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE aa5a49c0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 aa5a49c0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 aa5a49c0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 aa5a49c0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft aa5a49c0 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 aa5a49c0 -
resource yara_rule behavioral1/memory/640-0-0x0000000000420000-0x00000000004A9000-memory.dmp upx behavioral1/files/0x000a0000000243fc-2.dat upx behavioral1/memory/456-4-0x0000000000B20000-0x0000000000BA9000-memory.dmp upx behavioral1/memory/640-18-0x0000000000420000-0x00000000004A9000-memory.dmp upx behavioral1/memory/456-20-0x0000000000B20000-0x0000000000BA9000-memory.dmp upx behavioral1/memory/640-32-0x0000000000420000-0x00000000004A9000-memory.dmp upx behavioral1/memory/456-33-0x0000000000B20000-0x0000000000BA9000-memory.dmp upx behavioral1/memory/456-35-0x0000000000B20000-0x0000000000BA9000-memory.dmp upx behavioral1/memory/640-46-0x0000000000420000-0x00000000004A9000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\7ce90 aa5a49c0 File opened for modification C:\Windows\af500 ef81940cf2ed3568c73d6f35951e0b6904bd16b815be2464fefddedecd7ddd2d.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 ef81940cf2ed3568c73d6f35951e0b6904bd16b815be2464fefddedecd7ddd2d.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language aa5a49c0 - 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 aa5a49c0 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" aa5a49c0 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" aa5a49c0 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ aa5a49c0 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" aa5a49c0 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" aa5a49c0 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" aa5a49c0 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing aa5a49c0 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" aa5a49c0 - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 456 aa5a49c0 456 aa5a49c0 456 aa5a49c0 456 aa5a49c0 456 aa5a49c0 456 aa5a49c0 456 aa5a49c0 456 aa5a49c0 640 ef81940cf2ed3568c73d6f35951e0b6904bd16b815be2464fefddedecd7ddd2d.exe 640 ef81940cf2ed3568c73d6f35951e0b6904bd16b815be2464fefddedecd7ddd2d.exe 640 ef81940cf2ed3568c73d6f35951e0b6904bd16b815be2464fefddedecd7ddd2d.exe 640 ef81940cf2ed3568c73d6f35951e0b6904bd16b815be2464fefddedecd7ddd2d.exe 640 ef81940cf2ed3568c73d6f35951e0b6904bd16b815be2464fefddedecd7ddd2d.exe 640 ef81940cf2ed3568c73d6f35951e0b6904bd16b815be2464fefddedecd7ddd2d.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 640 ef81940cf2ed3568c73d6f35951e0b6904bd16b815be2464fefddedecd7ddd2d.exe Token: SeTcbPrivilege 640 ef81940cf2ed3568c73d6f35951e0b6904bd16b815be2464fefddedecd7ddd2d.exe Token: SeDebugPrivilege 456 aa5a49c0 Token: SeTcbPrivilege 456 aa5a49c0
Processes
-
C:\Users\Admin\AppData\Local\Temp\ef81940cf2ed3568c73d6f35951e0b6904bd16b815be2464fefddedecd7ddd2d.exe"C:\Users\Admin\AppData\Local\Temp\ef81940cf2ed3568c73d6f35951e0b6904bd16b815be2464fefddedecd7ddd2d.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:640
-
C:\Windows\Syswow64\aa5a49c0C:\Windows\Syswow64\aa5a49c01⤵
- 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:456
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\aa5a49c0
- Size 1.4MB
- SHA256 99e8083e668874abf4ec9de186ec490cb4a99624325e395b3e627156d4f1f6e8
- MD5 1af76b758df24bffca8267e61f2e9719
- SHA1 505286723ace9d1b525ea682b867350f15c96fd9
- SHA512 4036cbe49cfccdd0882032fe652691467d336d177bdd2519068357e0345e279be16c136a2d4e9832238f019bf6b164df63f7310967d55c3e99890f6dfc158b5b
- SSDEEP 24576:kjHPOSOkx2LFscU6UQOJdBqsCPhH9Do2sOfNZMjHfUr:kTGkQy56/OJdJCXDrsOFZMjHfUr
- TLSH T190658E31AAC14132E2B3867186FA56F6A5257C222711E5CF62C97B291E737D3ED3070E
- MD5 SHA1 SHA512 SSDEEP TLSH