Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
10/08/2026, 21:12
Behavioral task
behavioral1
Sample
3a6ea9ebac38089791028daf6dfb976256bd283be87fb97cf862e15e4e29401d.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
8 signatures
150 seconds
General
- Target 3a6ea9ebac38089791028daf6dfb976256bd283be87fb97cf862e15e4e29401d.exe
- Size 3.0MB
- Sample260810-z2npestthy
- SHA256 3a6ea9ebac38089791028daf6dfb976256bd283be87fb97cf862e15e4e29401d
- MD5 e6a89fe3d153062ae5dae905de19c97c
- SHA1 9319bc08cf4989b48e2fad7832809797a3768038
- SHA512 a7e8c251a1fdab988e1d288b2bda0fc0b5e253aaf51b7ff18251ff4e80ce29c5ec6a5d7458913574d629facc4c4e57d11634e37bb92557d0b668910930643520
- SSDEEP 49152:lA/JuTQKqVmgbQIzZMPXpB91rHpn/qKmNAOaG6IOY/:i/whnLrHp/qKm2/Sb/
- TLSH T142E55953EB914AE8E39D0536DF544150E72AF2256BEF13A27428420DDE83387BF61A3D
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 4304 fcf58ab1 - 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 4 223.5.5.5 3880 3a6ea9ebac38089791028daf6dfb976256bd283be87fb97cf862e15e4e29401d.exe Destination IP 33 114.114.114.114 3880 3a6ea9ebac38089791028daf6dfb976256bd283be87fb97cf862e15e4e29401d.exe Destination IP 34 223.5.5.5 3880 3a6ea9ebac38089791028daf6dfb976256bd283be87fb97cf862e15e4e29401d.exe Destination IP 3 114.114.114.114 3880 3a6ea9ebac38089791028daf6dfb976256bd283be87fb97cf862e15e4e29401d.exe - Drops file in System32 directory 13 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies fcf58ab1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache fcf58ab1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 fcf58ab1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 fcf58ab1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 fcf58ab1 File created C:\Windows\SysWOW64\fcf58ab1 3a6ea9ebac38089791028daf6dfb976256bd283be87fb97cf862e15e4e29401d.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 fcf58ab1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE fcf58ab1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 fcf58ab1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft fcf58ab1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData fcf58ab1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content fcf58ab1 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 fcf58ab1 -
resource yara_rule behavioral1/files/0x001c0000000243e0-2.dat upx behavioral1/memory/3880-1-0x0000000000B30000-0x0000000000E35000-memory.dmp upx behavioral1/memory/4304-4-0x00000000003C0000-0x00000000006C5000-memory.dmp upx behavioral1/memory/3880-5-0x0000000000B30000-0x0000000000E35000-memory.dmp upx behavioral1/memory/4304-6-0x00000000003C0000-0x00000000006C5000-memory.dmp upx behavioral1/memory/4304-21-0x00000000003C0000-0x00000000006C5000-memory.dmp upx - 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 3a6ea9ebac38089791028daf6dfb976256bd283be87fb97cf862e15e4e29401d.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language fcf58ab1 - 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 fcf58ab1 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" fcf58ab1 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ fcf58ab1 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" fcf58ab1 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" fcf58ab1 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" fcf58ab1 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing fcf58ab1 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" fcf58ab1 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" fcf58ab1 - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 4304 fcf58ab1 4304 fcf58ab1 4304 fcf58ab1 4304 fcf58ab1 4304 fcf58ab1 4304 fcf58ab1 4304 fcf58ab1 4304 fcf58ab1 3880 3a6ea9ebac38089791028daf6dfb976256bd283be87fb97cf862e15e4e29401d.exe 3880 3a6ea9ebac38089791028daf6dfb976256bd283be87fb97cf862e15e4e29401d.exe 3880 3a6ea9ebac38089791028daf6dfb976256bd283be87fb97cf862e15e4e29401d.exe 3880 3a6ea9ebac38089791028daf6dfb976256bd283be87fb97cf862e15e4e29401d.exe 3880 3a6ea9ebac38089791028daf6dfb976256bd283be87fb97cf862e15e4e29401d.exe 3880 3a6ea9ebac38089791028daf6dfb976256bd283be87fb97cf862e15e4e29401d.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 3880 3a6ea9ebac38089791028daf6dfb976256bd283be87fb97cf862e15e4e29401d.exe Token: SeTcbPrivilege 3880 3a6ea9ebac38089791028daf6dfb976256bd283be87fb97cf862e15e4e29401d.exe Token: SeDebugPrivilege 4304 fcf58ab1 Token: SeTcbPrivilege 4304 fcf58ab1
Processes
-
C:\Users\Admin\AppData\Local\Temp\3a6ea9ebac38089791028daf6dfb976256bd283be87fb97cf862e15e4e29401d.exe"C:\Users\Admin\AppData\Local\Temp\3a6ea9ebac38089791028daf6dfb976256bd283be87fb97cf862e15e4e29401d.exe"1⤵
- Unexpected DNS network traffic destination
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3880
-
C:\Windows\Syswow64\fcf58ab1C:\Windows\Syswow64\fcf58ab11⤵
- Executes dropped EXE
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4304
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\fcf58ab1
- Size 3.0MB
- SHA256 636c78b2b1a9412895c1caf198c7aef69fab4f77b66cfd7f5f20ebff72db3890
- MD5 2cd56d1822bf5b3149361f2c7b4f2924
- SHA1 88e5dad09f64312fdab445378f6ca7f69aef3b64
- SHA512 3ae02bab7817240773c8ea172cbed9bcb879e8b1d7ee75640b8a8c1b264a5d103cf4ad5610c9e376f5beacb9428b48e162b0ce82f0f18431e0bb943c3b10f8da
- SSDEEP 49152:SA/JuTQKqVmgbQIzZMPXpB91rHpn/qKmNAOaG6IOY/:N/whnLrHp/qKm2/Sb/
- TLSH T15BE55953EB914AE8E39D0536DF544150E72AF2256BEF13A27428420DDE83387BF61A3D
- MD5 SHA1 SHA512 SSDEEP TLSH