121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf

General

Target

121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe
Size

867KB
MD5

003b9e0df4d8f94a3f6ce035a53d2d32
SHA1

3bfe7cacbd6290980df6f8f9b75f969923a80370
SHA256

121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf
SHA512

4d3e575fbe88b4807dce832c8c22942834d55b6091f298b2f9f3aa361f0b80f4e56367e6e98f6bfd63e51dd763b04cf3dece722d710899d7353de413d7fdb334
SSDEEP

24576:UsBbWOSY4HewnvFdjaKDDh694uYkLD20PEiCVMx:UqL4BnvXjF0HYyD2Z2

Score

10^/10

persistence

Malware Config

Signatures

Modifies system executable filetype association 2 TTPs 2 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe

Executes dropped EXE 1 IoCs

pid	Process
988	spoolsv.exe

Modifies Installed Components in the registry 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{1B2F648E-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msyvr32.exe"	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{1B2F648E-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{1B2F648E-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msyvr32.exe"	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{1B2F648E-8B9A-11D5-EBA1-F78EEEEEE983}	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\concp32.exe	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe
File created	C:\Windows\SysWOW64\vcl32.exe	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe
File created	C:\Windows\SysWOW64\msyvr32.exe	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe
File opened for modification	C:\Windows\SysWOW64\msyvr32.exe	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\spoolsv.exe	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe
File opened for modification	C:\Windows\spoolsv.exe	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe

Modifies registry class 12 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1B2F648E-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1B2F648E-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1B2F648E-8B9A-11D5-EBA1-F78EEEEEE983}\u1 = 551d2e0658054ba756fd3798fea5ffca42865cb762a31639dabd7f2cca44e226	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1B2F648E-8B9A-11D5-EBA1-F78EEEEEE983}\u2 = a54a6b702f92fdf2acd57599e2ae1608015dff41aa020117fc9bd8e2dcf4340f3fa61eb55d6f28597df90602703809d4	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1B2F648E-8B9A-11D5-EBA1-F78EEEEEE983}	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1B2F648E-8B9A-11D5-EBA1-F78EEEEEE983}\ax = ca28c309fd1e0ead844e5fe3ec6751b5	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1B2F648E-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1B2F648E-8B9A-11D5-EBA1-F78EEEEEE983}\u0 = 658663d26f8bad325217a06063847056939f558d910ed252e05dd0113550f7fc0f4da82ff73a0681ba604c2d4f23269f	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1B2F648E-8B9A-11D5-EBA1-F78EEEEEE983}\v = "165"	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1B2F648E-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2032	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2032 wrote to memory of 988	2032	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe	27
PID 2032 wrote to memory of 988	2032	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe	27
PID 2032 wrote to memory of 988	2032	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe	27
PID 2032 wrote to memory of 988	2032	121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe	27

C:\Users\Admin\AppData\Local\Temp\121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe
"C:\Users\Admin\AppData\Local\Temp\121d77f3800026a8bfcd1cdc417e4212244217cb290b3e99f0e6063be23f3fbf.exe"
1⤵
- Modifies system executable filetype association
- Modifies Installed Components in the registry
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2032
- C:\Windows\spoolsv.exe
  C:\Windows\spoolsv.exe
  2⤵
  - Modifies system executable filetype association
  - Executes dropped EXE
  - Modifies Installed Components in the registry
  - Adds Run key to start application
  - Modifies registry class
  PID:988

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

1

T1042

Registry Run Keys / Startup Folder

2

T1060

Privilege Escalation

Defense Evasion

Modify Registry

3

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\spoolsv.exe

Filesize
871KB

MD5
8595a920835c6f4cd19ee404058ba46f

SHA1
cd38f21f478bda8c14f9838e6a1059d31d534c3a

SHA256
20645111829c2fbdd017a52c6133d8cbcab69c81f708ab68e5f6f1ff0dfd4e98

SHA512
ddf3c7ad733dba583fc9e70892a80f3c9859630c5996d33e39438b966ebe63ddf07fdec79a8e4187c137862f436709d1e1fdebd2c97ceb210c8d812853b22ef1

Download Submit
memory/988-55-0x0000000000000000-mapping.dmp

Download
memory/988-58-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/988-59-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2032-54-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2032-57-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads