Analysis
- max time kernel
149s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
21/04/2026, 01:03
Behavioral task
behavioral1
Sample
d9987c6c3c2125b933f333d52b6e418260429256c7bcc2032dcb41fc5d8c45a1.exe
Resource
win10v2004-20260130-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target d9987c6c3c2125b933f333d52b6e418260429256c7bcc2032dcb41fc5d8c45a1.exe
- Size 640KB
- Sample260421-beew1aav91
- SHA256 d9987c6c3c2125b933f333d52b6e418260429256c7bcc2032dcb41fc5d8c45a1
- MD5 cf1c89b0e62fc87ce0a135eb0536e3f5
- SHA1 1b427761a96c2416baf2bfe3114e98c8523ed8c5
- SHA512 cb4a5cabe4f52271417f6d1eca8e17056baf12edf1f44148172587317a4a0b6eb31989c3a0aae933920a8277b928d94a325a3ae034fb6eaaae827a7eeaf1e8fd
- SSDEEP 6144:UcTgav1cdCTuoPbgwmOLJvKRwLSFXdFwirGcEOkCybEaQRuy8KU5Rc:USvO2x9mONvKRwLSFtsOkxHya5+
- TLSH T1E4D45B35A6808036C0B74631C6F64BAAF9B5BC25631195CFA384376A1F737D2BA3570E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 1324 b65770f9 - 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 1 114.114.114.114 3824 d9987c6c3c2125b933f333d52b6e418260429256c7bcc2032dcb41fc5d8c45a1.exe Destination IP 2 223.5.5.5 3824 d9987c6c3c2125b933f333d52b6e418260429256c7bcc2032dcb41fc5d8c45a1.exe Destination IP 8 114.114.114.114 3824 d9987c6c3c2125b933f333d52b6e418260429256c7bcc2032dcb41fc5d8c45a1.exe Destination IP 9 223.5.5.5 3824 d9987c6c3c2125b933f333d52b6e418260429256c7bcc2032dcb41fc5d8c45a1.exe - Drops file in System32 directory 15 IoCs
description ioc Process File created C:\Windows\SysWOW64\b65770f9 d9987c6c3c2125b933f333d52b6e418260429256c7bcc2032dcb41fc5d8c45a1.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE b65770f9 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 b65770f9 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft b65770f9 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content b65770f9 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\AAD646CB44373074ADE741C38400E7E1 b65770f9 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\AAD646CB44373074ADE741C38400E7E1 b65770f9 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 b65770f9 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 b65770f9 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 b65770f9 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 b65770f9 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies b65770f9 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache b65770f9 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData b65770f9 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 b65770f9 -
resource yara_rule behavioral2/memory/3824-0-0x0000000000A90000-0x0000000000B1C000-memory.dmp upx behavioral2/files/0x001d00000002b1f7-3.dat upx behavioral2/memory/1324-7-0x0000000000140000-0x00000000001CC000-memory.dmp upx behavioral2/memory/3824-10-0x0000000000A90000-0x0000000000B1C000-memory.dmp upx behavioral2/memory/1324-13-0x0000000000140000-0x00000000001CC000-memory.dmp upx behavioral2/memory/1324-43-0x0000000000140000-0x00000000001CC000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\16aad8 b65770f9 File opened for modification C:\Windows\4177e0 d9987c6c3c2125b933f333d52b6e418260429256c7bcc2032dcb41fc5d8c45a1.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 d9987c6c3c2125b933f333d52b6e418260429256c7bcc2032dcb41fc5d8c45a1.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b65770f9 - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" b65770f9 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" b65770f9 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" b65770f9 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix b65770f9 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing b65770f9 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" b65770f9 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" b65770f9 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ b65770f9 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" b65770f9 - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 1324 b65770f9 1324 b65770f9 1324 b65770f9 1324 b65770f9 1324 b65770f9 1324 b65770f9 1324 b65770f9 1324 b65770f9 3824 d9987c6c3c2125b933f333d52b6e418260429256c7bcc2032dcb41fc5d8c45a1.exe 3824 d9987c6c3c2125b933f333d52b6e418260429256c7bcc2032dcb41fc5d8c45a1.exe 3824 d9987c6c3c2125b933f333d52b6e418260429256c7bcc2032dcb41fc5d8c45a1.exe 3824 d9987c6c3c2125b933f333d52b6e418260429256c7bcc2032dcb41fc5d8c45a1.exe 3824 d9987c6c3c2125b933f333d52b6e418260429256c7bcc2032dcb41fc5d8c45a1.exe 3824 d9987c6c3c2125b933f333d52b6e418260429256c7bcc2032dcb41fc5d8c45a1.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 3824 d9987c6c3c2125b933f333d52b6e418260429256c7bcc2032dcb41fc5d8c45a1.exe Token: SeTcbPrivilege 3824 d9987c6c3c2125b933f333d52b6e418260429256c7bcc2032dcb41fc5d8c45a1.exe Token: SeDebugPrivilege 1324 b65770f9 Token: SeTcbPrivilege 1324 b65770f9
Processes
-
C:\Users\Admin\AppData\Local\Temp\d9987c6c3c2125b933f333d52b6e418260429256c7bcc2032dcb41fc5d8c45a1.exe"C:\Users\Admin\AppData\Local\Temp\d9987c6c3c2125b933f333d52b6e418260429256c7bcc2032dcb41fc5d8c45a1.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:3824
-
C:\Windows\Syswow64\b65770f9C:\Windows\Syswow64\b65770f91⤵
- 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:1324
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\b65770f9
- Size 640KB
- SHA256 b7dd383423c08b66ebb04acbb0a6087985328ba3d31bbbee59828349241f9022
- MD5 7c29c9401351802a4fb3d24f1ae8f34a
- SHA1 04c4e1af1c85be932d2db3b61db6797f0225113e
- SHA512 19ed7dfb7eae4fe73f09bd3fb782dcff276da0356acd861907b8743783506c35f28e6931e4c0b4a858c99a5cfd6901c3d1a82677e730b2a8af9b78550a6f1341
- SSDEEP 6144:ecTgav1cdCTuoPbgwmOLJvKRwLSFXdFwirGcEOkCybEaQRuy8KU5Rc:eSvO2x9mONvKRwLSFtsOkxHya5+
- TLSH T166D45B35A6808036C0B74631C6F64BAAF9B5BC25631195CFA384376A1F737D2BA3570E
- MD5 SHA1 SHA512 SSDEEP TLSH