Analysis
- max time kernel
150s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
18/04/2026, 16:10
Behavioral task
behavioral1
Sample
c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe
Resource
win10v2004-20260130-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe
- Size 560KB
- Sample260418-tml96acy5q
- SHA256 c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df
- MD5 440960cd709dbbe0cbdac339eca6ad76
- SHA1 37cb35893876707e724eaf5c834a71714f90b013
- SHA512 3f563b0703ef6565dd7b3817ab175985611cc03297c17ee0bb733eda90e4acf8996acb7a8809f7c95b1a33880fcb9e74cc998a6763a3e3dd1e4af3ed9e464082
- SSDEEP 6144:eWVrC1c2oonALgPLj7vf1LKlyIFVirGcEOkCybEaQRuy8K:ekCO2zVPX7vf1LKlIsOkxHy
- TLSH T15DC47C29B690D076C4779574C4A187AAFAB1B432372449CFB3D00B5A1F237E2BA7530E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 4872 b1c8087c - Unexpected DNS network traffic destination 10 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
description flow ioc pid Process Destination IP 47 223.5.5.5 3280 c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe Destination IP 74 114.114.114.114 3280 c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe Destination IP 3 114.114.114.114 3280 c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe Destination IP 45 114.114.114.114 3280 c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe Destination IP 77 223.5.5.5 3280 c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe Destination IP 110 114.114.114.114 3280 c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe Destination IP 111 223.5.5.5 3280 c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe Destination IP 178 114.114.114.114 3280 c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe Destination IP 179 223.5.5.5 3280 c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe Destination IP 4 223.5.5.5 3280 c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe - Drops file in System32 directory 13 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE b1c8087c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft b1c8087c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content b1c8087c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 b1c8087c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies b1c8087c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 b1c8087c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache b1c8087c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData b1c8087c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 b1c8087c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 b1c8087c File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 b1c8087c File created C:\Windows\SysWOW64\b1c8087c c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 b1c8087c -
resource yara_rule behavioral1/memory/3280-0-0x0000000000CE0000-0x0000000000D6C000-memory.dmp upx behavioral1/files/0x000b000000023759-2.dat upx behavioral1/memory/4872-4-0x0000000000C80000-0x0000000000D0C000-memory.dmp upx behavioral1/memory/3280-18-0x0000000000CE0000-0x0000000000D6C000-memory.dmp upx behavioral1/memory/4872-20-0x0000000000C80000-0x0000000000D0C000-memory.dmp upx behavioral1/memory/4872-42-0x0000000000C80000-0x0000000000D0C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\536910 b1c8087c File opened for modification C:\Windows\3827a0 c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.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 c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b1c8087c - 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\Cookies\CachePrefix = "Cookie:" b1c8087c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" b1c8087c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" b1c8087c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing b1c8087c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix b1c8087c Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" b1c8087c Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ b1c8087c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" b1c8087c Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" b1c8087c - Suspicious behavior: EnumeratesProcesses 18 IoCs
pid Process 4872 b1c8087c 4872 b1c8087c 4872 b1c8087c 4872 b1c8087c 4872 b1c8087c 4872 b1c8087c 4872 b1c8087c 4872 b1c8087c 4872 b1c8087c 4872 b1c8087c 4872 b1c8087c 4872 b1c8087c 3280 c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe 3280 c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe 3280 c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe 3280 c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe 3280 c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe 3280 c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 3280 c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe Token: SeTcbPrivilege 3280 c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe Token: SeDebugPrivilege 4872 b1c8087c Token: SeTcbPrivilege 4872 b1c8087c
Processes
-
C:\Users\Admin\AppData\Local\Temp\c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.exe"C:\Users\Admin\AppData\Local\Temp\c9f631fef3e88246091d701a1c1122808459100d55cc5301b70ad440eb75b9df.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:3280
-
C:\Windows\Syswow64\b1c8087cC:\Windows\Syswow64\b1c8087c1⤵
- 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:4872
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\b1c8087c
- Size 560KB
- SHA256 a3ac57da5a76455a02ea401a23e179e53fa3b727bbf20c3c5d935decd89f489e
- MD5 0a4111d95e802318f3d18b1815c09f31
- SHA1 d7f91ece792e6f102cf38e061962a2c83a833ac0
- SHA512 c3ea9c17bbea3b0863c81f22fc4fda41eace41089c317cf640930777ccc8b3aee72f1951a46197ef7e1a9c06caf116f12e95a3f8d4822bb655b365192fb2c12f
- SSDEEP 6144:DWVrC1c2oonALgPLj7vf1LKlyIFVirGcEOkCybEaQRuy8K:DkCO2zVPX7vf1LKlIsOkxHy
- TLSH T1A1C47C29B690D076C4779574C4A187AAFAB1B432372449CFB3D00B5A1F237E2BA7530E
- MD5 SHA1 SHA512 SSDEEP TLSH