eac446bbf4f95d4780ab8573d3775f98de6a1efe455b39f087eb16655395df50

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
25-07-2024 13:01

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General

Target

mcbrwctl.dll
Size

277KB
MD5

fed0a7cda9fed47ecb28a664f44016e5
SHA1

fd5598d236b06be328b719f87f7a890a86d7a32a
SHA256

9130f10a4f486d92acbb6080a0c39c82abd88c32a52f51e621d7b7abe6021f0c
SHA512

2dcf49bd617482d8ec6aa975c295a2c9cfde11f23c5db10e570cb60c1f18191fbdde7189386f5d2a516b11c7cf090ebe7d87f4ba717f50b46ba8ed8c05fbf6d1
SSDEEP

3072:PF9oFc3EQY0rRXV74nrhRN5S6J93HdVPq2swF39mtl/lswJaMd+G721TEoKFbtu2:E3OrT74n/SsEwrm7/SP7MYVicG

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 Internet Explorer settings 1 TTPs 8 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{32E0A425-F2D1-4881-91F8-CECC4B19A288}\AppName = "iexplore.exe"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{32E0A425-F2D1-4881-91F8-CECC4B19A288}\Policy = "3"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{DAABE21E-DB8C-49b8-9511-9E6547ECBC5F}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{DAABE21E-DB8C-49b8-9511-9E6547ECBC5F}\AppPath = "C:\\Users\\Admin\\AppData\\Local\\Temp"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{DAABE21E-DB8C-49b8-9511-9E6547ECBC5F}\AppName = "McSACore.exe"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{DAABE21E-DB8C-49b8-9511-9E6547ECBC5F}\Policy = "3"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{32E0A425-F2D1-4881-91F8-CECC4B19A288}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{32E0A425-F2D1-4881-91F8-CECC4B19A288}\AppPath = "%ProgramFiles(x86)%\\Internet Explorer"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2568 wrote to memory of 2460	2568	regsvr32.exe	30
PID 2568 wrote to memory of 2460	2568	regsvr32.exe	30
PID 2568 wrote to memory of 2460	2568	regsvr32.exe	30
PID 2568 wrote to memory of 2460	2568	regsvr32.exe	30
PID 2568 wrote to memory of 2460	2568	regsvr32.exe	30
PID 2568 wrote to memory of 2460	2568	regsvr32.exe	30
PID 2568 wrote to memory of 2460	2568	regsvr32.exe	30

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\mcbrwctl.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2568
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\mcbrwctl.dll
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  PID:2460

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

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

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