634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0

General

Target

634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe
Size

504KB
MD5

5dfe8b3ec6c3f8e14d0e7f16c24f3193
SHA1

7742927dfb82f7f41d06070710b00a0e2c4f93b0
SHA256

634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0
SHA512

55b7740deee5cac9a0b343df6e7630f8cffd1eab297168619f0979fa4565f010c63e8217a453d2687c5e6110172472afd43f0ffd12c71c1d22a113eedc1e8dac
SSDEEP

12288:UsAL/WUv0cSGx8Qv/6h/45cdMhcj8U2sewNuXNNoFX5R:UsW/Wg0c7xm4C443LbuXNGx5R

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:

634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exespoolsv.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.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

2024 spoolsv.exe

pid	process
2024	spoolsv.exe

Modifies Installed Components in the registry 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

spoolsv.exe634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{85D614BE-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{85D614BE-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msnsu32.exe"	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{85D614BE-8B9A-11D5-EBA1-F78EEEEEE983}	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{85D614BE-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msnsu32.exe"	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

spoolsv.exe634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe

Drops file in System32 directory 6 IoCs

Processes:

634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe
File created	C:\Windows\SysWOW64\msnsu32.exe	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe
File opened for modification	C:\Windows\SysWOW64\msnsu32.exe	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe
File created	C:\Windows\SysWOW64\concp32.exe	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe
File created	C:\Windows\SysWOW64\vcl32.exe	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe

Drops file in Windows directory 2 IoCs

Processes:

634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe

description	ioc	process
File created	C:\Windows\spoolsv.exe	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe
File opened for modification	C:\Windows\spoolsv.exe	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe

Modifies registry class 12 IoCs

Processes:

spoolsv.exe634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe

description	ioc	process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{85D614BE-8B9A-11D5-EBA1-F78EEEEEE983}\u2 = a54a6b702f92fdf2acd57599e2ae1608015dff41aa020117fc9bd8e2dcf4340f3fa61eb55d6f28597df90602703809d4	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{85D614BE-8B9A-11D5-EBA1-F78EEEEEE983}\v = "165"	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{85D614BE-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{85D614BE-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{85D614BE-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{85D614BE-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 9a28b7d7ec8db54339d4c840e0cb0830	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{85D614BE-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{85D614BE-8B9A-11D5-EBA1-F78EEEEEE983}\u0 = 658663d26f8bad325217a06063847056939f558d910ed252e05dd0113550f7fc0f4da82ff73a0681ba604c2d4f23269f	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{85D614BE-8B9A-11D5-EBA1-F78EEEEEE983}\u1 = 551d2e0658054ba756fd3798fea5ffca42865cb762a31639dabd7f2cca44e226	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{85D614BE-8B9A-11D5-EBA1-F78EEEEEE983}	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	spoolsv.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe

pid process

1112 634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe

pid	process
1112	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe

description	pid	process	target process
PID 1112 wrote to memory of 2024	1112	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe	spoolsv.exe
PID 1112 wrote to memory of 2024	1112	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe	spoolsv.exe
PID 1112 wrote to memory of 2024	1112	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe	spoolsv.exe
PID 1112 wrote to memory of 2024	1112	634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe	spoolsv.exe

C:\Users\Admin\AppData\Local\Temp\634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.exe
"C:\Users\Admin\AppData\Local\Temp\634af9cbec62a0392ffb361e32376dfd80004477ae2c3b6ba00c723b8c6d6fd0.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:1112

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:2024

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
507KB

MD5
ad6efa24c72e7d2c0a551adcb819f3c8

SHA1
4a955a2ae161e2b57e618ce6549faeab2e57bd6f

SHA256
846b195e9b07e2b59717432512d5edfa46b74ccd128c9dd8aff184a4a9b91f86

SHA512
950999ab9144f888dbf2b2b226f44a9d90a73d3d680e6c045d52f8139c8bdb6ee231b54deb76c17007e6b626703008d4a38d69f0e4b5d10787dae96dcbf57760

Download Submit
memory/1112-54-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/1112-57-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2024-55-0x0000000000000000-mapping.dmp

Download
memory/2024-58-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2024-59-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads