Analysis
- max time kernel
149s - max time network
156s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
01/06/2026, 21:30
Behavioral task
behavioral1
Sample
a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.exe
Resource
win10v2004-20260513-en
9 signatures
150 seconds
General
- Target a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.exe
- Size 384KB
- Sample260601-1ctptafw91
- SHA256 a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432
- MD5 c1d93d111acfe3a4ed631b3c0432391c
- SHA1 95dc221fe7fc247f5de9f83938aa7fe23d83c0de
- SHA512 114c698d91f35b68faa6e0b89afb616db2f2e6d54449a31120739dc81437837c60e43b5747a28db9d2e03fdb77d4a2ba50105a6f181a12008ecad83ed0ce808e
- SSDEEP 6144:Dl51orRJXlDixHkUXe35rGcEOkCybEaQRXr9HNdvOan5R2:VqXUHkUXe39sOkx2LIan5g
- TLSH T1DB849D22F3518036C1978672C7B70F9AF7A5BD18831253CB5340B56A2FB32D2AE35719
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 5092 fc76315f - 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 12 114.114.114.114 3488 a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.exe Destination IP 13 223.5.5.5 3488 a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.exe Destination IP 1 114.114.114.114 3488 a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.exe Destination IP 2 223.5.5.5 3488 a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.exe - Drops file in System32 directory 13 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 fc76315f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content fc76315f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 fc76315f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE fc76315f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies fc76315f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft fc76315f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 fc76315f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 fc76315f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 fc76315f File created C:\Windows\SysWOW64\fc76315f a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 fc76315f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache fc76315f File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData fc76315f -
resource yara_rule behavioral2/memory/3488-0-0x00000000005B0000-0x0000000000639000-memory.dmp upx behavioral2/files/0x0009000000025021-2.dat upx behavioral2/memory/5092-4-0x0000000000130000-0x00000000001B9000-memory.dmp upx behavioral2/memory/3488-10-0x00000000005B0000-0x0000000000639000-memory.dmp upx behavioral2/memory/5092-12-0x0000000000130000-0x00000000001B9000-memory.dmp upx behavioral2/memory/5092-22-0x0000000000130000-0x00000000001B9000-memory.dmp upx behavioral2/memory/3488-29-0x00000000005B0000-0x0000000000639000-memory.dmp upx behavioral2/memory/5092-30-0x0000000000130000-0x00000000001B9000-memory.dmp upx behavioral2/memory/3488-37-0x00000000005B0000-0x0000000000639000-memory.dmp upx behavioral2/memory/5092-38-0x0000000000130000-0x00000000001B9000-memory.dmp upx behavioral2/memory/3488-42-0x00000000005B0000-0x0000000000639000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\572d48 fc76315f File opened for modification C:\Windows\3bb740 a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.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 a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language fc76315f - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" fc76315f Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" fc76315f Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing fc76315f Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix fc76315f Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" fc76315f Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" fc76315f Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ fc76315f Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" fc76315f Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" fc76315f - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 5092 fc76315f 5092 fc76315f 5092 fc76315f 5092 fc76315f 5092 fc76315f 5092 fc76315f 5092 fc76315f 5092 fc76315f 3488 a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.exe 3488 a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.exe 3488 a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.exe 3488 a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.exe 3488 a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.exe 3488 a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 3488 a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.exe Token: SeTcbPrivilege 3488 a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.exe Token: SeDebugPrivilege 5092 fc76315f Token: SeTcbPrivilege 5092 fc76315f
Processes
-
C:\Users\Admin\AppData\Local\Temp\a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.exe"C:\Users\Admin\AppData\Local\Temp\a77686db49169715bcfcfade52a9f07045545cd3fa9fa0bf4e5e41d8efd7c432.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:3488
-
C:\Windows\Syswow64\fc76315fC:\Windows\Syswow64\fc76315f1⤵
- 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:5092
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\fc76315f
- Size 384KB
- SHA256 a66776107e8235899e0eb76e0345778dc584d3c5b0df153e2ae5eb4912ea57b4
- MD5 5f7d5ace36d85593d48934762ea6c7ab
- SHA1 21993b329acd3ce8444b7048e9622a3067b7eebb
- SHA512 67a426426480476cc20e70a7b7fda1045682665114f23aac5e530bee1e93f44ea6b33ba158ab51f2d9c6c22c2d55320af2ece7afe63fa172dd2a83ffc717c8b6
- SSDEEP 6144:hl51orRJXlDixHkUXe35rGcEOkCybEaQRXr9HNdvOan5R2:/qXUHkUXe39sOkx2LIan5g
- TLSH T162849D22F3518036C1978672C7B70F9AF7A5BD18831253CB5340B56A2FB32D2AE35719
- MD5 SHA1 SHA512 SSDEEP TLSH