3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6

General

Target

3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe
Size

556KB
MD5

c529d9431bdf812cd3fb702a4fd8ada8
SHA1

dd3459a7051eaa34cd28c0c3dd133efa1dead013
SHA256

3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6
SHA512

dcc787c8ce5b29bc0866058b6c4e27b1fb616932ad16f4c832952241823b23ae56ba10846ed69e5e9f4162e4aef948e1630e267158a0991e9d9b4c1466c86138
SSDEEP

12288:UsAqMGHGSX1388BxGVI43d+FPRjw/ksYtXtaFEuMmUUDxAbOeuAybAkb:UsBbW1Wc/C9EEuMmT+Kdr

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:

3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exespoolsv.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.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:

3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exespoolsv.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{E5BC7DCE-8B9A-11D5-EBA1-F78EEEEEE983}	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{E5BC7DCE-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msjak32.exe"	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{E5BC7DCE-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{E5BC7DCE-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msjak32.exe"	spoolsv.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

spoolsv.exe3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-575491160-2295418218-1540667289-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-575491160-2295418218-1540667289-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe

Drops file in System32 directory 6 IoCs

Processes:

3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\msjak32.exe	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe
File created	C:\Windows\SysWOW64\concp32.exe	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe
File created	C:\Windows\SysWOW64\vcl32.exe	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe
File created	C:\Windows\SysWOW64\msjak32.exe	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe

Drops file in Windows directory 2 IoCs

Processes:

3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe

description	ioc	process
File created	C:\Windows\spoolsv.exe	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe
File opened for modification	C:\Windows\spoolsv.exe	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe

Modifies registry class 12 IoCs

Processes:

3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exespoolsv.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E5BC7DCE-8B9A-11D5-EBA1-F78EEEEEE983}	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E5BC7DCE-8B9A-11D5-EBA1-F78EEEEEE983}\ax = b009109f583ad968e1aa8994411d33cb	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E5BC7DCE-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E5BC7DCE-8B9A-11D5-EBA1-F78EEEEEE983}\u1 = 551d2e0658054ba756fd3798fea5ffca42865cb762a31639dabd7f2cca44e226	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E5BC7DCE-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\{E5BC7DCE-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E5BC7DCE-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E5BC7DCE-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E5BC7DCE-8B9A-11D5-EBA1-F78EEEEEE983}\u0 = 658663d26f8bad325217a06063847056939f558d910ed252e05dd0113550f7fc0f4da82ff73a0681ba604c2d4f23269f	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E5BC7DCE-8B9A-11D5-EBA1-F78EEEEEE983}\u2 = a54a6b702f92fdf2acd57599e2ae1608015dff41aa020117fc9bd8e2dcf4340f3fa61eb55d6f28597df90602703809d4	spoolsv.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe

pid process

272 3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe

pid	process
272	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe

description	pid	process	target process
PID 272 wrote to memory of 2008	272	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe	spoolsv.exe
PID 272 wrote to memory of 2008	272	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe	spoolsv.exe
PID 272 wrote to memory of 2008	272	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe	spoolsv.exe
PID 272 wrote to memory of 2008	272	3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe	spoolsv.exe

C:\Users\Admin\AppData\Local\Temp\3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.exe
"C:\Users\Admin\AppData\Local\Temp\3dbf96df235ec1ff38f66c4e826528a365d687d85af7d9086fd12dd95362f6b6.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:272

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
557KB

MD5
4dce2b27e1a7c09b9587376e2a7ed7a0

SHA1
6fbb5b967d8cf5bf78895b13e5e90cd478a61bff

SHA256
3968a3ae40cdef1e4d1e53c76dc365d0af0f7f7b96182b390a2ff03f393cc161

SHA512
fcfc50616f3a2e022a3a062587d2d8e2fc503cbae4edf971d9770b6425a35c73634aae17bfd5b227456ab84e8c63572afa4d29b161506605be1f510d864d5564

Download Submit
memory/272-54-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/272-57-0x0000000000400000-0x0000000000435000-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