72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4

General

Target

72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe
Size

350KB
MD5

441762a9006af7f983d0111f7199b98e
SHA1

461974483df2411385f8087d95a999e340431f40
SHA256

72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4
SHA512

87581216b49ddfb763c6fa5bd70af869df42b8331a3d650d9d2bd19200c6ffce2e1afbea00799c4d2a26a1846a5203d642ba3621e04eacd26a08da581b3f5f11
SSDEEP

6144:MRAhhJxX7bNIAROzTuft84FpJmWEHaMqToMr24NABR5FyhkMtoV:UsAAPF84FpJmCMqE34N6UhBi

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\" %*"	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.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

pid	Process
1332	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\{95B49875-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msgav32.exe"	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{95B49875-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{95B49875-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msgav32.exe"	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{95B49875-8B9A-11D5-EBA1-F78EEEEEE983}	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.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\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\vcl32.exe	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe
File created	C:\Windows\SysWOW64\msgav32.exe	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe
File opened for modification	C:\Windows\SysWOW64\msgav32.exe	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe
File created	C:\Windows\SysWOW64\concp32.exe	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\spoolsv.exe	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe
File opened for modification	C:\Windows\spoolsv.exe	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe

Modifies registry class 12 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{95B49875-8B9A-11D5-EBA1-F78EEEEEE983}\u1 = 551d2e0658054ba756fd3798fea5ffca42865cb762a31639dabd7f2cca44e226	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{95B49875-8B9A-11D5-EBA1-F78EEEEEE983}	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{95B49875-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 829e854c6392a27ae4ef8ce4bd79a679	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{95B49875-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{95B49875-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{95B49875-8B9A-11D5-EBA1-F78EEEEEE983}\u0 = 658663d26f8bad325217a06063847056939f558d910ed252e05dd0113550f7fc0f4da82ff73a0681ba604c2d4f23269f	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\{95B49875-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{95B49875-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{95B49875-8B9A-11D5-EBA1-F78EEEEEE983}\u2 = a54a6b702f92fdf2acd57599e2ae1608015dff41aa020117fc9bd8e2dcf4340f3fa61eb55d6f28597df90602703809d4	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{95B49875-8B9A-11D5-EBA1-F78EEEEEE983}\v = "165"	spoolsv.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1768	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1768 wrote to memory of 1332	1768	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe	27
PID 1768 wrote to memory of 1332	1768	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe	27
PID 1768 wrote to memory of 1332	1768	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe	27
PID 1768 wrote to memory of 1332	1768	72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe	27

C:\Users\Admin\AppData\Local\Temp\72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.exe
"C:\Users\Admin\AppData\Local\Temp\72957bc0aedf6824888e25bc6c6afa7e1b861e5ef34b20c83c96ff66efbedeb4.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:1768
- 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:1332

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
282063e20d76f8d335dbd8133e0de01c

SHA1
f42b8d2d424b4d4f47da7c6d0c53fa142dff16df

SHA256
940693691e92b1f6eb92654129850f581956bfd79a0804ef7d8ad91b769fbeb3

SHA512
02bf68e8345b86486a2f5a3bd4951ea40223b679bbd2f50e8d50418df466ff8be6755a53f91716e6e78e8de5974fd1671840967b075bc350fb2b49273dc3c284

Download Submit
memory/1332-58-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/1332-59-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/1768-54-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/1768-57-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads