Analysis
-
max time kernel
60s -
max time network
113s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
09-11-2020 20:41
Static task
static1
Behavioral task
behavioral1
Sample
dd1aa660f2f24368dd58c5ce7a709b6c.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
dd1aa660f2f24368dd58c5ce7a709b6c.exe
Resource
win10v20201028
General
-
Target
dd1aa660f2f24368dd58c5ce7a709b6c.exe
-
Size
818KB
-
MD5
dd1aa660f2f24368dd58c5ce7a709b6c
-
SHA1
a54d435a04d3e883b1773d1c8d439dc95628fa07
-
SHA256
25f867b8065165d7876adb29673ac78be2a731ae82b9ea57eb54ba6479bc642e
-
SHA512
a86738a5fd7915f3fbd9ddc8b5c3e01a936074749b7e8d14ceb91defef6657b5e5c1fc76fc6461b86424add2099c14b90c88b7b84de53928404562f2148b16b5
Malware Config
Signatures
-
ServiceHost packer 12 IoCs
Detects ServiceHost packer used for .NET malware
Processes:
resource yara_rule behavioral2/memory/3836-4-0x0000000000000000-mapping.dmp servicehost behavioral2/memory/3836-5-0x0000000000000000-mapping.dmp servicehost behavioral2/memory/3836-6-0x0000000000000000-mapping.dmp servicehost behavioral2/memory/3836-7-0x0000000000000000-mapping.dmp servicehost behavioral2/memory/3836-8-0x0000000000000000-mapping.dmp servicehost behavioral2/memory/3836-9-0x0000000000000000-mapping.dmp servicehost behavioral2/memory/3836-11-0x0000000000000000-mapping.dmp servicehost behavioral2/memory/3836-14-0x0000000000000000-mapping.dmp servicehost behavioral2/memory/3836-15-0x0000000000000000-mapping.dmp servicehost behavioral2/memory/3836-13-0x0000000000000000-mapping.dmp servicehost behavioral2/memory/3836-12-0x0000000000000000-mapping.dmp servicehost behavioral2/memory/3836-10-0x0000000000000000-mapping.dmp servicehost -
Executes dropped EXE 1 IoCs
Processes:
csrss.exepid process 3836 csrss.exe -
Processes:
csrss.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1" csrss.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" csrss.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" csrss.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AutoUpdateDisableNotify = "1" csrss.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" csrss.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1" csrss.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesOverride = "1" csrss.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
dd1aa660f2f24368dd58c5ce7a709b6c.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Client Server Runtime Process = "C:\\Windows\\199912880817168\\csrss.exe" dd1aa660f2f24368dd58c5ce7a709b6c.exe Set value (str) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\Client Server Runtime Process = "C:\\Windows\\199912880817168\\csrss.exe" dd1aa660f2f24368dd58c5ce7a709b6c.exe -
Drops file in Program Files directory 3 IoCs
Processes:
csrss.exedescription ioc process File opened for modification C:\Program Files\7-Zip\7z.exe csrss.exe File opened for modification C:\Program Files\7-Zip\7zfm.exe csrss.exe File opened for modification C:\Program Files\7-Zip\7zg.exe csrss.exe -
Drops file in Windows directory 3 IoCs
Processes:
dd1aa660f2f24368dd58c5ce7a709b6c.exedescription ioc process File created C:\Windows\199912880817168\csrss.exe dd1aa660f2f24368dd58c5ce7a709b6c.exe File opened for modification C:\Windows\199912880817168\csrss.exe dd1aa660f2f24368dd58c5ce7a709b6c.exe File opened for modification C:\Windows\199912880817168 dd1aa660f2f24368dd58c5ce7a709b6c.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 668 3836 WerFault.exe csrss.exe -
Suspicious behavior: EnumeratesProcesses 14 IoCs
Processes:
WerFault.exepid process 668 WerFault.exe 668 WerFault.exe 668 WerFault.exe 668 WerFault.exe 668 WerFault.exe 668 WerFault.exe 668 WerFault.exe 668 WerFault.exe 668 WerFault.exe 668 WerFault.exe 668 WerFault.exe 668 WerFault.exe 668 WerFault.exe 668 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
WerFault.exedescription pid process Token: SeRestorePrivilege 668 WerFault.exe Token: SeBackupPrivilege 668 WerFault.exe Token: SeDebugPrivilege 668 WerFault.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
dd1aa660f2f24368dd58c5ce7a709b6c.exedescription pid process target process PID 676 wrote to memory of 3836 676 dd1aa660f2f24368dd58c5ce7a709b6c.exe csrss.exe PID 676 wrote to memory of 3836 676 dd1aa660f2f24368dd58c5ce7a709b6c.exe csrss.exe PID 676 wrote to memory of 3836 676 dd1aa660f2f24368dd58c5ce7a709b6c.exe csrss.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\dd1aa660f2f24368dd58c5ce7a709b6c.exe"C:\Users\Admin\AppData\Local\Temp\dd1aa660f2f24368dd58c5ce7a709b6c.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:676 -
C:\Windows\199912880817168\csrss.exeC:\Windows\199912880817168\csrss.exe2⤵
- Executes dropped EXE
- Windows security modification
- Drops file in Program Files directory
PID:3836 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3836 -s 12763⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:668
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
MD5
dd1aa660f2f24368dd58c5ce7a709b6c
SHA1a54d435a04d3e883b1773d1c8d439dc95628fa07
SHA25625f867b8065165d7876adb29673ac78be2a731ae82b9ea57eb54ba6479bc642e
SHA512a86738a5fd7915f3fbd9ddc8b5c3e01a936074749b7e8d14ceb91defef6657b5e5c1fc76fc6461b86424add2099c14b90c88b7b84de53928404562f2148b16b5
-
MD5
dd1aa660f2f24368dd58c5ce7a709b6c
SHA1a54d435a04d3e883b1773d1c8d439dc95628fa07
SHA25625f867b8065165d7876adb29673ac78be2a731ae82b9ea57eb54ba6479bc642e
SHA512a86738a5fd7915f3fbd9ddc8b5c3e01a936074749b7e8d14ceb91defef6657b5e5c1fc76fc6461b86424add2099c14b90c88b7b84de53928404562f2148b16b5