3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a

General

Target

3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe
Size

350KB
MD5

cf4a90524ca46ff9d148fc785826bd48
SHA1

a15304b6c842ec4453e66b0d5e554557c7afbaba
SHA256

3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a
SHA512

5303294578f2ac43f8e901c2bd5cc2ea4c427cfada13ea7e1f9aef679f535b69aaad9c26fed4a90c8db8a0bc8ee6eced656c4741396c77d6424130dd4eed4501
SSDEEP

6144:MRAhhJxX7bNIAROzTuaPUD8XRufY7L3oDNOqmq9n0bQ9kDbvVoUSAptiJw:UsAAPaPUD1SYDUxq9089kfy16

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

Processes:

3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exespoolsv.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	spoolsv.exe

Executes dropped EXE 1 IoCs

Processes:

spoolsv.exe

pid process

2008 spoolsv.exe

pid	process
2008	spoolsv.exe

Modifies Installed Components in the registry 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

spoolsv.exe3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{6BFC0F1A-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{6BFC0F1A-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "mshro32.exe"	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{6BFC0F1A-8B9A-11D5-EBA1-F78EEEEEE983}	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{6BFC0F1A-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "mshro32.exe"	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exespoolsv.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe

Drops file in System32 directory 6 IoCs

Processes:

3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe

description	ioc	process
File created	C:\Windows\SysWOW64\mshro32.exe	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe
File opened for modification	C:\Windows\SysWOW64\mshro32.exe	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe
File created	C:\Windows\SysWOW64\concp32.exe	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe
File created	C:\Windows\SysWOW64\vcl32.exe	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe

Drops file in Windows directory 2 IoCs

Processes:

3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe

description	ioc	process
File created	C:\Windows\spoolsv.exe	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe
File opened for modification	C:\Windows\spoolsv.exe	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe

Modifies registry class 12 IoCs

Processes:

spoolsv.exe3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6BFC0F1A-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
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6BFC0F1A-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6BFC0F1A-8B9A-11D5-EBA1-F78EEEEEE983}\u1 = 551d2e0658054ba756fd3798fea5ffca42865cb762a31639dabd7f2cca44e226	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6BFC0F1A-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 8a38abe7a8d82c35e10847f8ac67a0c1	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6BFC0F1A-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6BFC0F1A-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6BFC0F1A-8B9A-11D5-EBA1-F78EEEEEE983}\u0 = 658663d26f8bad325217a06063847056939f558d910ed252e05dd0113550f7fc0f4da82ff73a0681ba604c2d4f23269f	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6BFC0F1A-8B9A-11D5-EBA1-F78EEEEEE983}\u2 = a54a6b702f92fdf2acd57599e2ae1608015dff41aa020117fc9bd8e2dcf4340f3fa61eb55d6f28597df90602703809d4	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6BFC0F1A-8B9A-11D5-EBA1-F78EEEEEE983}	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6BFC0F1A-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe

pid process

1100 3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe

pid	process
1100	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe

description	pid	process	target process
PID 1100 wrote to memory of 2008	1100	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe	spoolsv.exe
PID 1100 wrote to memory of 2008	1100	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe	spoolsv.exe
PID 1100 wrote to memory of 2008	1100	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe	spoolsv.exe
PID 1100 wrote to memory of 2008	1100	3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe	spoolsv.exe

C:\Users\Admin\AppData\Local\Temp\3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.exe
"C:\Users\Admin\AppData\Local\Temp\3fcc9c933d2b9e8c7e91490835c7f9774c1d2c6a1ac4b0430ddfd42aa944390a.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:1100

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:2008

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

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Downloads

C:\Windows\spoolsv.exe

Filesize
354KB

MD5
faf66a95dd4019db64722f16db34a5f9

SHA1
5533c0efe2c07a37f135738b9bc0c018482c7b04

SHA256
2b21fe9d869e99387cee4882c1ced6c4cc81f22766e52fb13cf7f07561264ef0

SHA512
3fbe6245e1fd548d926d63dbd9eb8d5e09573549a8565ca16a3b2be77373d8071d8ed699a9aad0c2172463a953c776c9ba06afc3e121991ad9bcc9698ac400a1

Download Submit
memory/1100-54-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/1100-57-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2008-55-0x0000000000000000-mapping.dmp

Download
memory/2008-58-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2008-59-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads