17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745b

General

Target

17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe
Size

525KB
MD5

abba7f45f81a0f78b9bcb8d06589f9f0
SHA1

8bc35d466f7398613482f8d3b73edb14ca8a7baf
SHA256

17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745b
SHA512

4627d2a570b61eacb021ac1ae944abecc29078628b1b5557a03b0eac9e75d04a81a771158654f14799a1c160c4460ab9550d4e0755da9826c56d2feb97adf837
SSDEEP

12288:UsAqMGHGSX1388BxGVILSY4oSewnvFdCWDOKGXCBffXA:UsBbWOSY4HewnvFdTDwSBQ

Score

8^/10

discovery persistence

Malware Config

Signatures

Boot or Logon Autostart Execution: Active Setup 2 TTPs 4 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{40BD7C9A-8B9A-11D5-EBA1-F78EEEEEE983}	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{40BD7C9A-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msjhk32.exe"	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{40BD7C9A-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{40BD7C9A-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msjhk32.exe"	spoolsv.exe

Executes dropped EXE 1 IoCs

pid	Process
2744	spoolsv.exe

Modifies system executable filetype association 2 TTPs 2 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	spoolsv.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\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\vcl32.exe	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe
File created	C:\Windows\SysWOW64\msjhk32.exe	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe
File opened for modification	C:\Windows\SysWOW64\msjhk32.exe	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe
File created	C:\Windows\SysWOW64\concp32.exe	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\spoolsv.exe	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe
File opened for modification	C:\Windows\spoolsv.exe	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe

Modifies registry class 12 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{40BD7C9A-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{40BD7C9A-8B9A-11D5-EBA1-F78EEEEEE983}\u0 = 658663d26f8bad325217a06063847056939f558d910ed252e05dd0113550f7fc0f4da82ff73a0681ba604c2d4f23269f	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{40BD7C9A-8B9A-11D5-EBA1-F78EEEEEE983}\u1 = 551d2e0658054ba756fd3798fea5ffca42865cb762a31639dabd7f2cca44e226	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{40BD7C9A-8B9A-11D5-EBA1-F78EEEEEE983}\u2 = a54a6b702f92fdf2acd57599e2ae1608015dff41aa020117fc9bd8e2dcf4340f3fa61eb55d6f28597df90602703809d4	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{40BD7C9A-8B9A-11D5-EBA1-F78EEEEEE983}	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{40BD7C9A-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{40BD7C9A-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{40BD7C9A-8B9A-11D5-EBA1-F78EEEEEE983}\ax = b35bddd2a52018294ace15b6b2855fe3	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{40BD7C9A-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{40BD7C9A-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

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
664	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 664 wrote to memory of 2744	664	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe	29
PID 664 wrote to memory of 2744	664	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe	29
PID 664 wrote to memory of 2744	664	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe	29
PID 664 wrote to memory of 2744	664	17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe	29

C:\Users\Admin\AppData\Local\Temp\17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe
"C:\Users\Admin\AppData\Local\Temp\17706175c0994a2291a3c26c495328dfd1c2874a2665a2588afb465c6df0745bN.exe"
1⤵
- Boot or Logon Autostart Execution: Active Setup
- Modifies system executable filetype association
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:664
- C:\Windows\spoolsv.exe
  C:\Windows\spoolsv.exe
  2⤵
  - Boot or Logon Autostart Execution: Active Setup
  - Executes dropped EXE
  - Modifies system executable filetype association
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:2744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Defense Evasion

Modify Registry

3

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\concp32.exe

Filesize
534KB

MD5
3de6a47fd0c0b32bfacc11d5dee8d01c

SHA1
6dd597d7cda9473a3327b4057fbe4aae3558f9d1

SHA256
3a2e3bed1d5514106d9a45c1496a7de48f9fe806520a04c455fedde97872f9ff

SHA512
1be57ef83fe5026b1ba911494d8be1221c9635daa76585e93fee7a260d707348de00d5ff1afc4f890a787162250bf62c60b318f6b4acb9e7275d39e7fbe7287f

Download Submit
C:\Windows\spoolsv.exe

Filesize
527KB

MD5
18398186e3481bc1da31d06ddc7e5b43

SHA1
f9ee72b847212a0542a513dd678f515fad138a29

SHA256
c181a1e4ea87ff8ffa559d4543927b5f7c3497736d080ccdbd4254378e8c5947

SHA512
674352e34ff7019a5df795a99854853a46d36d18ca257dbda9acc8fd1f0377e3420735ca815fc07cbfeadd5bff4b0dfe9f76f729eb92df51d4d5e414ca6bbfb5

Download Submit
memory/664-0-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/664-10-0x0000000000220000-0x0000000000255000-memory.dmp

Filesize
212KB

Download
memory/664-14-0x0000000000220000-0x0000000000255000-memory.dmp

Filesize
212KB

Download
memory/664-16-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2744-17-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads