4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff

General

Target

4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe
Size

674KB
MD5

68fdc91af3dc4cca3a47bcec7976f780
SHA1

6ed128c6004ed3f8253a2b6de7f5b94bf3a5a313
SHA256

4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff
SHA512

a1b1e075b4115b39f83535acbe7f31459bfb053ad83e74d7bd017c359b0d516879bd9f2a25431c9ec1e166dd2b954d78f7ba351ada565e5e0a7c414f565c3052
SSDEEP

12288:UsAqMGHGSX1388BxGVI43GVpinJ2suEn23teGb/I5FqVbp7qSE2+37T5zqT:UsBbW1SaUEn2deGbfXzSLTpqT

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\" %*"	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.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
1980	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
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{533815F5-8B9A-11D5-EBA1-F78EEEEEE983}	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{533815F5-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msoep32.exe"	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{533815F5-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{533815F5-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msoep32.exe"	spoolsv.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"	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\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\msoep32.exe	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe
File opened for modification	C:\Windows\SysWOW64\msoep32.exe	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe
File created	C:\Windows\SysWOW64\concp32.exe	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe
File created	C:\Windows\SysWOW64\vcl32.exe	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\spoolsv.exe	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe
File opened for modification	C:\Windows\spoolsv.exe	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe

Modifies registry class 12 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{533815F5-8B9A-11D5-EBA1-F78EEEEEE983}\ax = f2be71e1f2e7ab4238557e2b2bfd6b6c	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{533815F5-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{533815F5-8B9A-11D5-EBA1-F78EEEEEE983}\u1 = 551d2e0658054ba756fd3798fea5ffca42865cb762a31639dabd7f2cca44e226	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{533815F5-8B9A-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\{533815F5-8B9A-11D5-EBA1-F78EEEEEE983}	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{533815F5-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{533815F5-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{533815F5-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{533815F5-8B9A-11D5-EBA1-F78EEEEEE983}\u0 = 658663d26f8bad325217a06063847056939f558d910ed252e05dd0113550f7fc0f4da82ff73a0681ba604c2d4f23269f	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{533815F5-8B9A-11D5-EBA1-F78EEEEEE983}\u2 = a54a6b702f92fdf2acd57599e2ae1608015dff41aa020117fc9bd8e2dcf4340f3fa61eb55d6f28597df90602703809d4	spoolsv.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1016	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1016 wrote to memory of 1980	1016	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe	28
PID 1016 wrote to memory of 1980	1016	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe	28
PID 1016 wrote to memory of 1980	1016	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe	28
PID 1016 wrote to memory of 1980	1016	4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe	28

C:\Users\Admin\AppData\Local\Temp\4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.exe
"C:\Users\Admin\AppData\Local\Temp\4c1055c8af06e04f431f938de4cca6bf1d465b2cbeb0a6a03fed5d94287973ff.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:1016
- 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:1980

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
675KB

MD5
7a084c2160ae99718723fcc1ca791379

SHA1
8ce6483ebcc7f4cf3f55eea29bf54a9843526dea

SHA256
53456f0fcb2bf1bf8f5bdf7ea274049f5b78c7da04ef74b95a3bc9bad9dca5bc

SHA512
510b65c739648aac67c33bbc6df2335801685fa2095bbcf145a809194186e71ab592fa3dc4c32a8dda9c7249dffa304a569926c8890db87acde839f04934eb23

Download Submit
memory/1016-54-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/1016-57-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/1980-58-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/1980-59-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads