2348b49f723e80bb2a22050a4a5a17a9ec7847cb0a6871f4cfaf2d61a3461a07

General

Target

a3f5986c1d660037698463a3a66d9360N.exe
Size

968KB
MD5

a3f5986c1d660037698463a3a66d9360
SHA1

e88316b1a099bea21df9c25be9a87c2bbcc9f02d
SHA256

2348b49f723e80bb2a22050a4a5a17a9ec7847cb0a6871f4cfaf2d61a3461a07
SHA512

cb541f1024ac5757145890ca1ad828a0dc04604448a5ca11f8d1b813b40d1d59948159e7db1dcb6833592db5a147d47572daafb68d96b297b7da99c8e21be2cd
SSDEEP

24576:v6Zv2ivhBVnFys7xP86Lh7uhmh8VZ7i/+XAmvYSFdbRPIbgRrgW:vE2ivhQs7dLNuhmuVZ7iHmv5FJRIqZ

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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5B6E3C33-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msqgt32.exe"	a3f5986c1d660037698463a3a66d9360N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5B6E3C33-8B9A-11D5-EBA1-F78EEEEEE983}	a3f5986c1d660037698463a3a66d9360N.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\" %*"	a3f5986c1d660037698463a3a66d9360N.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2924-0-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral2/files/0x0007000000023416-5.dat	upx
behavioral2/memory/2924-7-0x0000000000400000-0x0000000000439000-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"	a3f5986c1d660037698463a3a66d9360N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	a3f5986c1d660037698463a3a66d9360N.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\msqgt32.exe	a3f5986c1d660037698463a3a66d9360N.exe
File opened for modification	C:\Windows\SysWOW64\msqgt32.exe	a3f5986c1d660037698463a3a66d9360N.exe
File created	C:\Windows\SysWOW64\concp32.exe	a3f5986c1d660037698463a3a66d9360N.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	a3f5986c1d660037698463a3a66d9360N.exe
File created	C:\Windows\SysWOW64\vcl32.exe	a3f5986c1d660037698463a3a66d9360N.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	a3f5986c1d660037698463a3a66d9360N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4336	2924	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	a3f5986c1d660037698463a3a66d9360N.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5B6E3C33-8B9A-11D5-EBA1-F78EEEEEE983}	a3f5986c1d660037698463a3a66d9360N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5B6E3C33-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	a3f5986c1d660037698463a3a66d9360N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5B6E3C33-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3	a3f5986c1d660037698463a3a66d9360N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5B6E3C33-8B9A-11D5-EBA1-F78EEEEEE983}\ax = f712a78dded3a970054e4fcfb17d026c	a3f5986c1d660037698463a3a66d9360N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	a3f5986c1d660037698463a3a66d9360N.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2924	a3f5986c1d660037698463a3a66d9360N.exe

C:\Users\Admin\AppData\Local\Temp\a3f5986c1d660037698463a3a66d9360N.exe
"C:\Users\Admin\AppData\Local\Temp\a3f5986c1d660037698463a3a66d9360N.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:2924
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2924 -s 704
  2⤵
  - Program crash
  PID:4336

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2924 -ip 2924
1⤵
PID:3036

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
974KB

MD5
01e52bb83bd1f5e843c61a925c1408ae

SHA1
12cc454468a3fb2875fd1c43f046d0b157b58877

SHA256
2ec2fc36a3a9b0205d428ccd1776548428408b2929d436c64184162369d2ba49

SHA512
d62e2a6a120cc23cd8f7409f7f9e20b40f7f00f37334a77b10a35163b59e4b82329978b01180fa8d591445159d75f18918d17a0084b56b1001262b3ee4012258

Download Submit
memory/2924-0-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2924-7-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads