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
07/09/2026, 04:25
Behavioral task
behavioral1
Sample
a2b61ccb1c162b45833d0a5e0db90c0d0eda0c6c4e9c86626f204b77850b7571.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target a2b61ccb1c162b45833d0a5e0db90c0d0eda0c6c4e9c86626f204b77850b7571.exe
- Size 761KB
- Sample260907-e17qpawzbv
- SHA256 a2b61ccb1c162b45833d0a5e0db90c0d0eda0c6c4e9c86626f204b77850b7571
- MD5 ee0188680c342671bdb7ddf4eb13565d
- SHA1 93152196092c949c82ff8004a929e4277f104b22
- SHA512 2bf4807b5b306b38aa9a83bd389c508006abbe9da2409273a0329b66b65ab3e33716bee0e1b622ddec1b1349f2e7fa762a2e2a5e25d57e93cb9ad720756ecfb4
- SSDEEP 12288:kSvO2x9mONvKRwLSFtsOkxHya5hYIW0p98B:XvO2xJKRw2kOkxSkW298B
- TLSH T1FCF49E35A2808036C0B34532C6F94AABF9797D35631565CBA3843B662F737D2BA3570E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 4056 b1fb347c - 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 4172 a2b61ccb1c162b45833d0a5e0db90c0d0eda0c6c4e9c86626f204b77850b7571.exe Destination IP 4 223.5.5.5 4172 a2b61ccb1c162b45833d0a5e0db90c0d0eda0c6c4e9c86626f204b77850b7571.exe Destination IP 46 114.114.114.114 4172 a2b61ccb1c162b45833d0a5e0db90c0d0eda0c6c4e9c86626f204b77850b7571.exe Destination IP 47 223.5.5.5 4172 a2b61ccb1c162b45833d0a5e0db90c0d0eda0c6c4e9c86626f204b77850b7571.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 b1fb347c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 b1fb347c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache b1fb347c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData b1fb347c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 b1fb347c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft b1fb347c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content b1fb347c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 b1fb347c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 b1fb347c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 b1fb347c File created C:\Windows\SysWOW64\b1fb347c a2b61ccb1c162b45833d0a5e0db90c0d0eda0c6c4e9c86626f204b77850b7571.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 b1fb347c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE b1fb347c -
resource yara_rule behavioral1/memory/4172-0-0x0000000000280000-0x000000000030C000-memory.dmp upx behavioral1/files/0x00180000000243ca-2.dat upx behavioral1/memory/4056-4-0x0000000001000000-0x000000000108C000-memory.dmp upx behavioral1/memory/4172-16-0x0000000000280000-0x000000000030C000-memory.dmp upx behavioral1/memory/4056-17-0x0000000001000000-0x000000000108C000-memory.dmp upx behavioral1/memory/4056-22-0x0000000001000000-0x000000000108C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\4570b0 b1fb347c File opened for modification C:\Windows\476d18 a2b61ccb1c162b45833d0a5e0db90c0d0eda0c6c4e9c86626f204b77850b7571.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 a2b61ccb1c162b45833d0a5e0db90c0d0eda0c6c4e9c86626f204b77850b7571.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b1fb347c - 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\History\CachePrefix = "Visited:" b1fb347c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ b1fb347c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" b1fb347c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" b1fb347c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing b1fb347c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix b1fb347c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" b1fb347c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" b1fb347c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" b1fb347c - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 4056 b1fb347c 4056 b1fb347c 4056 b1fb347c 4056 b1fb347c 4056 b1fb347c 4056 b1fb347c 4056 b1fb347c 4056 b1fb347c 4172 a2b61ccb1c162b45833d0a5e0db90c0d0eda0c6c4e9c86626f204b77850b7571.exe 4172 a2b61ccb1c162b45833d0a5e0db90c0d0eda0c6c4e9c86626f204b77850b7571.exe 4172 a2b61ccb1c162b45833d0a5e0db90c0d0eda0c6c4e9c86626f204b77850b7571.exe 4172 a2b61ccb1c162b45833d0a5e0db90c0d0eda0c6c4e9c86626f204b77850b7571.exe 4172 a2b61ccb1c162b45833d0a5e0db90c0d0eda0c6c4e9c86626f204b77850b7571.exe 4172 a2b61ccb1c162b45833d0a5e0db90c0d0eda0c6c4e9c86626f204b77850b7571.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4172 a2b61ccb1c162b45833d0a5e0db90c0d0eda0c6c4e9c86626f204b77850b7571.exe Token: SeTcbPrivilege 4172 a2b61ccb1c162b45833d0a5e0db90c0d0eda0c6c4e9c86626f204b77850b7571.exe Token: SeDebugPrivilege 4056 b1fb347c Token: SeTcbPrivilege 4056 b1fb347c
Processes
-
C:\Users\Admin\AppData\Local\Temp\a2b61ccb1c162b45833d0a5e0db90c0d0eda0c6c4e9c86626f204b77850b7571.exe"C:\Users\Admin\AppData\Local\Temp\a2b61ccb1c162b45833d0a5e0db90c0d0eda0c6c4e9c86626f204b77850b7571.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:4172
-
C:\Windows\Syswow64\b1fb347cC:\Windows\Syswow64\b1fb347c1⤵
- 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:4056
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\b1fb347c
- Size 761KB
- SHA256 89dadd3fadd7748927071e27a0f96d07b8f8b5709c3b6c23fcc9b0e63a2d73e5
- MD5 c17dfa467233309d6461ef1e1ca43d15
- SHA1 fbc38ba97daade210ffdb304f7f917656cb9c516
- SHA512 c4df32d3cec73ae986bc9ac13b38d6f629f9a437a0a7df3ba6d0eb6a14c2f00a9111ef859a4b24b9bec7ecd0b2b8d982ce647d828b25c929aee3306be10cec9e
- SSDEEP 12288:YSvO2x9mONvKRwLSFtsOkxHya5hYIW0p98B:zvO2xJKRw2kOkxSkW298B
- TLSH T1D8F49E35A2808036C0B34532C6F94AABF9797D35631565CBA3843B662F737D2BA3570E
- MD5 SHA1 SHA512 SSDEEP TLSH