420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e

General

Target

420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe
Size

969KB
MD5

9a9dcb0a2e9c4f6ea73ef9ef7639597b
SHA1

e384cff90ece7d11f4bb0d1b41a55bb7f36940db
SHA256

420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e
SHA512

245d652cf768261b41fb5ef645f0f12001c8657e4e03565e1e9a0eaedd9ce1dd7dce65690c06b4be76e702d203acb8ba1e10be7d2de77588e8279bf2ca512d8c
SSDEEP

24576:v6Zv2ivhBVnFys7xP86Lh7uhmh8VZ7i/+XAmvYSFdbRPIbgRu:vE2ivhQs7dLNuhmuVZ7iHmv5FJRIqu

Score

8^/10

persistence upx

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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{82F7E40C-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msktu32.exe"	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{82F7E40C-8B9A-11D5-EBA1-F78EEEEEE983}	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{82F7E40C-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msktu32.exe"	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{82F7E40C-8B9A-11D5-EBA1-F78EEEEEE983}	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2672	svchost.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\" %*"	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	svchost.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2676-0-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/files/0x0008000000015d3a-5.dat	upx
behavioral1/memory/2676-16-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/files/0x0030000000015cde-13.dat	upx
behavioral1/memory/2672-17-0x0000000000400000-0x0000000000439000-memory.dmp	upx

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"	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	svchost.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\vcl32.exe	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe
File created	C:\Windows\SysWOW64\msktu32.exe	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe
File opened for modification	C:\Windows\SysWOW64\msktu32.exe	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe
File created	C:\Windows\SysWOW64\concp32.exe	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\svchost.exe	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe
File opened for modification	C:\Windows\svchost.exe	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe

Modifies registry class 12 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82F7E40C-8B9A-11D5-EBA1-F78EEEEEE983}\u2 = a54a6b702f92fdf2acd57599e2ae1608015dff41aa020117fc9bd8e2dcf4340f3fa61eb55d6f28597df90602703809d4	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82F7E40C-8B9A-11D5-EBA1-F78EEEEEE983}\v = "165"	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82F7E40C-8B9A-11D5-EBA1-F78EEEEEE983}	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82F7E40C-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 6e90a0c0f0570de105dbdea324704807	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82F7E40C-8B9A-11D5-EBA1-F78EEEEEE983}	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82F7E40C-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	svchost.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82F7E40C-8B9A-11D5-EBA1-F78EEEEEE983}\u1 = 551d2e0658054ba756fd3798fea5ffca42865cb762a31639dabd7f2cca44e226	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82F7E40C-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82F7E40C-8B9A-11D5-EBA1-F78EEEEEE983}\sm = ebb5525fa3bcf9422c8ff945977d6af9	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82F7E40C-8B9A-11D5-EBA1-F78EEEEEE983}\u0 = 658663d26f8bad325217a06063847056939f558d910ed252e05dd0113550f7fc0f4da82ff73a0681ba604c2d4f23269f	svchost.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2676	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2676 wrote to memory of 2672	2676	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe	30
PID 2676 wrote to memory of 2672	2676	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe	30
PID 2676 wrote to memory of 2672	2676	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe	30
PID 2676 wrote to memory of 2672	2676	420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe	30

C:\Users\Admin\AppData\Local\Temp\420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.exe
"C:\Users\Admin\AppData\Local\Temp\420721f6d66b82eee6ab0cfb5ef5b91a0ead0c643c21ddf019af9e588a18fa2e.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
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2676
- C:\Windows\svchost.exe
  C:\Windows\svchost.exe
  2⤵
  - Boot or Logon Autostart Execution: Active Setup
  - Executes dropped EXE
  - Modifies system executable filetype association
  - Adds Run key to start application
  - Modifies registry class
  PID:2672

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\concp32.exe

Filesize
978KB

MD5
1cf63e282b8c86a26d29ea83ff952f40

SHA1
5df26360b6b43ef1ea32595e1ed646cf4b89dc75

SHA256
1ed8daca089c34b2a098e6b98787d3045d798001436d6db7e42d0ff36ff738da

SHA512
a59a5fd3dc28dea3b3ab408c8fc9b49dccd43294d2bfa5130edfbfb464847bd22dc688a167448aa1a930cb925df3fab6238221527eecb8ae2e7c60a81b24d6bc

Download Submit
C:\Windows\svchost.exe

Filesize
971KB

MD5
3a0cca8e9a7b33092680161bba00e8e5

SHA1
f3b65865f10f046fcdbdff79713d7270589f4d89

SHA256
4fa4f0de90146b71a261f85bc8eae21a16f05f9c1cfb8bcae4b067168501d653

SHA512
8e810d3c0a4c673e460a774c193f4dc4446079aa9dbdba324f8df37a4076eb5c43b4ed435566bea7dd22557668f76ab02de1b0efad9cbc694b9439b08524b5bb

Download Submit
memory/2672-17-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2676-0-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2676-16-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2676-15-0x00000000001B0000-0x00000000001E9000-memory.dmp

Filesize
228KB

Download
memory/2676-14-0x00000000001B0000-0x00000000001E9000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads