940057ae2dd2e1532eebfd06c07b3c50344f27922692479076e267443a9edc17

General

Target

087f743efe2e8420ab817c555a232e50N.exe
Size

678KB
MD5

087f743efe2e8420ab817c555a232e50
SHA1

a40fc725d117ae3350474615869e1de83f2ea09b
SHA256

940057ae2dd2e1532eebfd06c07b3c50344f27922692479076e267443a9edc17
SHA512

31623e2d8414a1596c23cbd9fd82d6f9e5bf5ab981351de67b1d4c49131420dadee851300953dcb986b4b27f23fd2320afb21b8c805983266a4601833e900002
SSDEEP

12288:7tKe6Zv23YLVFhBsC8iFHs+hsuQXIQVRpVnl3Bg5oiNaYzHvAR8:v6Zv2ivhBVnFvh5Q44+iiUKIa

Score

8^/10

persistence upx

Malware Config

Signatures

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\{C268A2CF-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msypk32.exe"	087f743efe2e8420ab817c555a232e50N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{C268A2CF-8B9A-11D5-EBA1-F78EEEEEE983}	087f743efe2e8420ab817c555a232e50N.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\" %*"	087f743efe2e8420ab817c555a232e50N.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1824-0-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral2/files/0x00080000000234a0-5.dat	upx
behavioral2/memory/1824-7-0x0000000000400000-0x0000000000439000-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\USER\S-1-5-21-2753856825-3907105642-1818461144-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	087f743efe2e8420ab817c555a232e50N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	087f743efe2e8420ab817c555a232e50N.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\msypk32.exe	087f743efe2e8420ab817c555a232e50N.exe
File opened for modification	C:\Windows\SysWOW64\msypk32.exe	087f743efe2e8420ab817c555a232e50N.exe
File created	C:\Windows\SysWOW64\concp32.exe	087f743efe2e8420ab817c555a232e50N.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	087f743efe2e8420ab817c555a232e50N.exe
File created	C:\Windows\SysWOW64\vcl32.exe	087f743efe2e8420ab817c555a232e50N.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	087f743efe2e8420ab817c555a232e50N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3720	1824	WerFault.exe	81

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C268A2CF-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	087f743efe2e8420ab817c555a232e50N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C268A2CF-8B9A-11D5-EBA1-F78EEEEEE983}\sm = ebb5525fa3bcf9422c8ff945977d6af9	087f743efe2e8420ab817c555a232e50N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C268A2CF-8B9A-11D5-EBA1-F78EEEEEE983}\ax = aba3935dd29131c6015735b28e6c7b41	087f743efe2e8420ab817c555a232e50N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	087f743efe2e8420ab817c555a232e50N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C268A2CF-8B9A-11D5-EBA1-F78EEEEEE983}	087f743efe2e8420ab817c555a232e50N.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1824	087f743efe2e8420ab817c555a232e50N.exe

C:\Users\Admin\AppData\Local\Temp\087f743efe2e8420ab817c555a232e50N.exe
"C:\Users\Admin\AppData\Local\Temp\087f743efe2e8420ab817c555a232e50N.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:1824
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1824 -s 704
  2⤵
  - Program crash
  PID:3720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 1824 -ip 1824
1⤵
PID:1612

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
684KB

MD5
73a7235ae61399d77dd2168a96f657b0

SHA1
14cc5ad83fe9069656e2328df262367a2c699ce8

SHA256
3764d2746ceea8958b5cb2fedc779be6def58c3b22c459b008aa82bcf6c508fd

SHA512
2fd37fc11e514b4b93a74923a3bd0f3e4fe066ad43968abe7099bf190f88c4bd15b048225c245d4cf53975ad2cb619cd66f8801ab7e4b15f3dfb801ceb25ee2a

Download Submit
memory/1824-0-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1824-7-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads