8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a

General

Target

8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe
Size

216KB
MD5

cbef3401b1c1ddc8f5165bc3fd796c15
SHA1

4cb40a325909b3980a1c23b01393f441ef2ae54c
SHA256

8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a
SHA512

8acca2c3449c135a1bf7980ec8ec0734ed722b9630c822306840b7cdb193e6634273e387bbf6ad200adf3162693c964dff35da3cdacf08766d5ebb89f6aa69ae
SSDEEP

3072:MRAhhcsxgAJuK7bZD01GoI0ONIGpPlGvOOGCc0Hjv5qPr2CHExvwm1xpb+l7V/Z/:MRAhhJxX7bNI5dvqbMjvUPrdHCxpKl7z

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\" %*"	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.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
760	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\{B37B629F-8B9A-11D5-EBA1-F78EEEEEE983}	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{B37B629F-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msqcu32.exe"	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{B37B629F-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{B37B629F-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msqcu32.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\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\msqcu32.exe	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe
File created	C:\Windows\SysWOW64\concp32.exe	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe
File created	C:\Windows\SysWOW64\vcl32.exe	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe
File created	C:\Windows\SysWOW64\msqcu32.exe	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\spoolsv.exe	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe
File opened for modification	C:\Windows\spoolsv.exe	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe

Modifies registry class 12 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B37B629F-8B9A-11D5-EBA1-F78EEEEEE983}\u2 = a54a6b702f92fdf2acd57599e2ae1608015dff41aa020117fc9bd8e2dcf4340f3fa61eb55d6f28597df90602703809d4	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B37B629F-8B9A-11D5-EBA1-F78EEEEEE983}	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B37B629F-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B37B629F-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 77a50f63818c0ca057ed0e12cc895331	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B37B629F-8B9A-11D5-EBA1-F78EEEEEE983}	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\{B37B629F-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B37B629F-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B37B629F-8B9A-11D5-EBA1-F78EEEEEE983}\u0 = 658663d26f8bad325217a06063847056939f558d910ed252e05dd0113550f7fc0f4da82ff73a0681ba604c2d4f23269f	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B37B629F-8B9A-11D5-EBA1-F78EEEEEE983}\u1 = 551d2e0658054ba756fd3798fea5ffca42865cb762a31639dabd7f2cca44e226	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B37B629F-8B9A-11D5-EBA1-F78EEEEEE983}\v = "165"	spoolsv.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
932	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 932 wrote to memory of 760	932	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe	28
PID 932 wrote to memory of 760	932	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe	28
PID 932 wrote to memory of 760	932	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe	28
PID 932 wrote to memory of 760	932	8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe	28

C:\Users\Admin\AppData\Local\Temp\8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.exe
"C:\Users\Admin\AppData\Local\Temp\8e4a70d9b3af0785dfbc74048f79bf5b5e6b6d30f53798e9f6495de6f6b66f7a.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:932
- 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:760

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
221KB

MD5
5c9bc4bcbc79da4743dd90da16839f84

SHA1
d4a7f010c573a9903c64a6252addf193a9219cef

SHA256
e14bd39bc67d9637dad1ef1f6d0b273187126b2a7400fedc9c010684ddc806fa

SHA512
df2d2dd23a081963762709150e67a6aa1158bc5a0eb58e74e42d0f277408929a3c6767bf898e15fbef3e7ec47a177941ea69cd0bfc23f3551e74c10ccd83894d

Download Submit
memory/760-58-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/760-59-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/932-54-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/932-57-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads