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) 3 IoCs

resource	yara_rule
behavioral2/memory/1604-0-0x0000000000400000-0x0000000000439000-memory.dmp	UPX
behavioral2/files/0x000700000002340e-5.dat	UPX
behavioral2/memory/1604-7-0x0000000000400000-0x0000000000439000-memory.dmp	UPX

Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 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\{380660BF-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "mstyb32.exe"	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{380660BF-8B9A-11D5-EBA1-F78EEEEEE983}	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe

Modifies system executable filetype association 2 TTPs 1 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\" %*"	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1604-0-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral2/files/0x000700000002340e-5.dat	upx
behavioral2/memory/1604-7-0x0000000000400000-0x0000000000439000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 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-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\vcl32.exe	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5040	1604	WerFault.exe	80

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{380660BF-8B9A-11D5-EBA1-F78EEEEEE983}	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{380660BF-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{380660BF-8B9A-11D5-EBA1-F78EEEEEE983}\sm = ebb5525fa3bcf9422c8ff945977d6af9	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{380660BF-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 0047248fbe5a51ce27454de5442d5840	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1604	a330e4b297162b1e031bfee76be5011131b848eb7e9d3016058369208780a649.exe

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
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
PID:1604
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1604 -s 700
  2⤵
  - Program crash
  PID:5040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1604 -ip 1604
1⤵
PID:2896

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
memory/1604-0-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1604-7-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads