1f4ba905eea3da2b39b4a3effaeca8a737d325a474ac41bf5d81e70633916b2c

General

Target

94754cefc063f4714ff41d4159837cf0N.exe
Size

678KB
MD5

94754cefc063f4714ff41d4159837cf0
SHA1

0415810fd50ea45e09958389eec8823c469d5523
SHA256

1f4ba905eea3da2b39b4a3effaeca8a737d325a474ac41bf5d81e70633916b2c
SHA512

15c252a4d3fe8516e67a60c23659ddfbc35f06063e51cf2993c5777a41bd48923c6a16458af29aa11295e3aa43ca6327eb03926ef99484f9a431a4d0e4bfce08
SSDEEP

12288:7tKe6Zv23YLVFhBsC8iFHs+hsuQXIQRUP/g8t55VGGWEs4UE0LP:v6Zv2ivhBVnFvh5Q44UP48eEDUE0LP

Score

8^/10

discovery 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
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{C18F54DE-8B9A-11D5-EBA1-F78EEEEEE983}	94754cefc063f4714ff41d4159837cf0N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{C18F54DE-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msoym32.exe"	94754cefc063f4714ff41d4159837cf0N.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\" %*"	94754cefc063f4714ff41d4159837cf0N.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3824-0-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral2/files/0x00070000000234f1-5.dat	upx
behavioral2/memory/3824-7-0x0000000000400000-0x0000000000439000-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"	94754cefc063f4714ff41d4159837cf0N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	94754cefc063f4714ff41d4159837cf0N.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\concp32.exe	94754cefc063f4714ff41d4159837cf0N.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	94754cefc063f4714ff41d4159837cf0N.exe
File created	C:\Windows\SysWOW64\vcl32.exe	94754cefc063f4714ff41d4159837cf0N.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	94754cefc063f4714ff41d4159837cf0N.exe
File created	C:\Windows\SysWOW64\msoym32.exe	94754cefc063f4714ff41d4159837cf0N.exe
File opened for modification	C:\Windows\SysWOW64\msoym32.exe	94754cefc063f4714ff41d4159837cf0N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3916	3824	WerFault.exe	82

System Location Discovery: System Language Discovery 1 TTPs 1 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	94754cefc063f4714ff41d4159837cf0N.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C18F54DE-8B9A-11D5-EBA1-F78EEEEEE983}\sm = ebb5525fa3bcf9422c8ff945977d6af9	94754cefc063f4714ff41d4159837cf0N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C18F54DE-8B9A-11D5-EBA1-F78EEEEEE983}\ax = bc57461413320cd064636debcfcaacdd	94754cefc063f4714ff41d4159837cf0N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	94754cefc063f4714ff41d4159837cf0N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C18F54DE-8B9A-11D5-EBA1-F78EEEEEE983}	94754cefc063f4714ff41d4159837cf0N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C18F54DE-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	94754cefc063f4714ff41d4159837cf0N.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3824	94754cefc063f4714ff41d4159837cf0N.exe

C:\Users\Admin\AppData\Local\Temp\94754cefc063f4714ff41d4159837cf0N.exe
"C:\Users\Admin\AppData\Local\Temp\94754cefc063f4714ff41d4159837cf0N.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
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
PID:3824
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 756
  2⤵
  - Program crash
  PID:3916

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3824 -ip 3824
1⤵
PID:4108

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
684KB

MD5
e7dbbd00ba2af9f595df884dbf4231a1

SHA1
14399fb98d2b7888e7b2e6d7d1191115c430432a

SHA256
e50fe692c1bee3acca18cf7e15e49b750cd417686c3036c6838360c6f44c8798

SHA512
d403c43114aa75646d202190896b8ff93d0711f0b3f4a48b379196682b965993d2f7cbe911d492d92a150174b3b6e6b7426d19971c7581af06d475b28012ee5d

Download Submit
memory/3824-0-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/3824-7-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads