a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649

General

Target

a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
Size

717KB
MD5

9316c4073e0d9a042c33dc334a0386f6
SHA1

152873d50147cd44419b349aa62115df6b80fb41
SHA256

a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649
SHA512

3b1eafe67046aec07e4bf9161522990d31ffeaf85203fdcf97a13ee3e1b0e7530263385d326c16f81cf38c318ef84fc65c8b5bdf2fc12955c81968b44636bf2a
SSDEEP

12288:7tKe6Zv23YLVFhBsC8iFHSs7xPY1f6HrSUsP6AVjANDRq8xW6FUBoobpPL8uv3:v6Zv2ivhBVnFys7xP86LXtqIWwUWobTv

Score

9^/10

Malware Config

Signatures

UPX dump on OEP (original entry point) 7 IoCs

resource	yara_rule
behavioral1/memory/2580-0-0x0000000000400000-0x0000000000439000-memory.dmp	UPX
behavioral1/files/0x0008000000015cb8-5.dat	UPX
behavioral1/memory/2580-11-0x0000000000220000-0x0000000000259000-memory.dmp	UPX
behavioral1/memory/2580-16-0x0000000000400000-0x0000000000439000-memory.dmp	UPX
behavioral1/files/0x0037000000015693-15.dat	UPX
behavioral1/memory/2232-17-0x0000000000400000-0x0000000000439000-memory.dmp	UPX
behavioral1/memory/2232-18-0x0000000000400000-0x0000000000439000-memory.dmp	UPX

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\{7B3A8DFC-8B9A-11D5-EBA1-F78EEEEEE983}	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{7B3A8DFC-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "mstyb32.exe"	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{7B3A8DFC-8B9A-11D5-EBA1-F78EEEEEE983}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{7B3A8DFC-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "mstyb32.exe"	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2232	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\" %*"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2580-0-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/files/0x0008000000015cb8-5.dat	upx
behavioral1/memory/2580-11-0x0000000000220000-0x0000000000259000-memory.dmp	upx
behavioral1/memory/2580-16-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/files/0x0037000000015693-15.dat	upx
behavioral1/memory/2232-17-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/memory/2232-18-0x0000000000400000-0x0000000000439000-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"	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	svchost.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
File created	C:\Windows\SysWOW64\mstyb32.exe	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
File opened for modification	C:\Windows\SysWOW64\mstyb32.exe	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
File created	C:\Windows\SysWOW64\concp32.exe	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
File created	C:\Windows\SysWOW64\vcl32.exe	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\svchost.exe	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
File opened for modification	C:\Windows\svchost.exe	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe

Modifies registry class 12 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7B3A8DFC-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7B3A8DFC-8B9A-11D5-EBA1-F78EEEEEE983}\sm = ebb5525fa3bcf9422c8ff945977d6af9	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7B3A8DFC-8B9A-11D5-EBA1-F78EEEEEE983}	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7B3A8DFC-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	svchost.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7B3A8DFC-8B9A-11D5-EBA1-F78EEEEEE983}\u0 = 658663d26f8bad325217a06063847056939f558d910ed252e05dd0113550f7fc0f4da82ff73a0681ba604c2d4f23269f	svchost.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7B3A8DFC-8B9A-11D5-EBA1-F78EEEEEE983}\u1 = 551d2e0658054ba756fd3798fea5ffca42865cb762a31639dabd7f2cca44e226	svchost.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7B3A8DFC-8B9A-11D5-EBA1-F78EEEEEE983}\u2 = a54a6b702f92fdf2acd57599e2ae1608015dff41aa020117fc9bd8e2dcf4340f3fa61eb55d6f28597df90602703809d4	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7B3A8DFC-8B9A-11D5-EBA1-F78EEEEEE983}	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7B3A8DFC-8B9A-11D5-EBA1-F78EEEEEE983}\v = "165"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7B3A8DFC-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 0047248fbe5a51ce27454de5442d5840	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2580	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2580 wrote to memory of 2232	2580	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe	28
PID 2580 wrote to memory of 2232	2580	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe	28
PID 2580 wrote to memory of 2232	2580	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe	28
PID 2580 wrote to memory of 2232	2580	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe	28

C:\Users\Admin\AppData\Local\Temp\a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
"C:\Users\Admin\AppData\Local\Temp\a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.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:2580
- 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:2232

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
725KB

MD5
29c157b4323159085e2840b88ac1f6bd

SHA1
64cc229754d331ebda1136a309296b6b7e42a147

SHA256
ad81e5581203ac69d0b21acad8852b5281b607221fd800ceff744674cbc69fd4

SHA512
c83a64629f296f4e2b0c2f5cc7e3bb6f02e69fe23b28509d448010f6b8ff415a3c5423efb484ab6b7b3b6e509dee0f8fccaad3076fe95e3d48b8b3ef39a6a77b

Download Submit
C:\Windows\svchost.exe

Filesize
718KB

MD5
451c75939042b0ffae2378badbfe2bc2

SHA1
120a1f73bfe7dcd09b89abfc9efc2b15e5babec3

SHA256
eb66af3cf380e7bc40f2b99000ac90f73d4042939127e02ab5585a8b379dd50d

SHA512
6f571bd99143e8924a753b15736cb2636390ae24ea264e518859be3de39cf20f1b9d4766e8225c24e431f84cd53e00d071623546977745a2e079ac93eb3d5a94

Download Submit
memory/2232-17-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2232-18-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2580-0-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2580-14-0x0000000000220000-0x0000000000259000-memory.dmp

Filesize
228KB

Download
memory/2580-11-0x0000000000220000-0x0000000000259000-memory.dmp

Filesize
228KB

Download
memory/2580-16-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads