6db345ff7f370b0785a5ce1a0f3e8d9b2a8d8fb6a236d29744c87749868adc50

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-11-2024 11:18

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

csfcodec/mpc_mcucltu.dll
Size

124KB
MD5

1aafc350fcc3dd779318b35a28da2dfc
SHA1

551ec6829b85ec06a8eed31514ae2c546ac89edb
SHA256

a8b3302278d43c5530569a7328d9466f4d3c2f09dddc2aa9edef7a243f7c7151
SHA512

43eff2803061121aef477ad313e9dcdddec1cae7bbafb70b9737f7a82cfc045a0fd0c52923f77b580fec82c7e23a35ba98116819500a4111b9712d4ed9d36ddf
SSDEEP

1536:1zdQQeaqEX5JtfEbac/de6UipX19J9gwagN0zMHx1QV9lp3Z1:FqaRXWlGipXz3szMHx+V9lp3L

Score

3^/10

discovery

Malware Config

Signatures

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	regsvr32.exe

Modifies registry class 21 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Collegesoft.McuClient\ = "Collegesoft McuClient"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B5A7D70F-AE96-4F83-B811-572CA3529323}\ = "Collegesoft McuClient"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B5A7D70F-AE96-4F83-B811-572CA3529323}\ProgID\ = "Collegesoft.McuClient"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B5A7D70F-AE96-4F83-B811-572CA3529323}\VersionIndependentProgID\ = "Collegesoft.McuClient.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B5A7D70F-AE96-4F83-B811-572CA3529323}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B5A7D70F-AE96-4F83-B811-572CA3529323}\TypeLib\ = "{00000000-0000-0000-0000-000000000000}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Collegesoft.McuClient	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B5A7D70F-AE96-4F83-B811-572CA3529323}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B5A7D70F-AE96-4F83-B811-572CA3529323}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B5A7D70F-AE96-4F83-B811-572CA3529323}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B5A7D70F-AE96-4F83-B811-572CA3529323}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Collegesoft.McuClient.1\CLSID\ = "{B5A7D70F-AE96-4F83-B811-572CA3529323}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B5A7D70F-AE96-4F83-B811-572CA3529323}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\csfcodec\\mpc_mcucltu.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Collegesoft.McuClient.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Collegesoft.McuClient\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Collegesoft.McuClient\CLSID\ = "{B5A7D70F-AE96-4F83-B811-572CA3529323}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B5A7D70F-AE96-4F83-B811-572CA3529323}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Collegesoft.McuClient.1\ = "Collegesoft McuClient"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Collegesoft.McuClient.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Collegesoft.McuClient.1\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Collegesoft.McuClient.1\CurVer\ = "Collegesoft.McuClient"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1684 wrote to memory of 1804	1684	regsvr32.exe	30
PID 1684 wrote to memory of 1804	1684	regsvr32.exe	30
PID 1684 wrote to memory of 1804	1684	regsvr32.exe	30
PID 1684 wrote to memory of 1804	1684	regsvr32.exe	30
PID 1684 wrote to memory of 1804	1684	regsvr32.exe	30
PID 1684 wrote to memory of 1804	1684	regsvr32.exe	30
PID 1684 wrote to memory of 1804	1684	regsvr32.exe	30

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\csfcodec\mpc_mcucltu.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1684
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\csfcodec\mpc_mcucltu.dll
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:1804

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads