2de119b465a2e51cbab3293b51b419c49d6da1f497c68e17549839e0f6ae2a9b

Analysis

max time kernel
121s
max time network
126s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
17/08/2024, 03:08

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General

Target

$SYSDIR/mpg4ds32.dll
Size

234KB
MD5

99f8bd46f424a2086a0821fde445902e
SHA1

341689b419e9bc2335b691748ede33b1aed5533c
SHA256

caa4262f53680c825484cf8613fb8cdff984c8c051c0f2f0f3e85becdf1258e0
SHA512

768760322ceabd0323e40dce8212ea1b4bcb6df12dc34beb42b67aa8b98d781b4582b718ae70043ae308b9e3a14864ad7cb5b779764c8934696dc89b8a0babcd
SSDEEP

3072:uT/B2YVFw+0oNZlobmKSylGynhyb+/qbN0HW1cBWkg083/A/X7sW0G+mZ5:EVG+jSbmKjphyb+ybN0HWDs8O7sRm

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 19 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{598EBA02-B49A-11D2-A1C1-00609778EA66}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$SYSDIR\\mpg4ds32.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{598EBA02-B49A-11D2-A1C1-00609778EA66}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{075BB8A1-B7D8-11D2-A1C6-00609778EA66}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{82CCD3E0-F71A-11D0-9FE5-00609778EA66}\FilterData = 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	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{598EBA02-B49A-11D2-A1C1-00609778EA66}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{598EBA02-B49A-11D2-A1C1-00609778EA66}\ = "Microcrap MPEG-4 Video Decompressor Property page"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{075BB8A1-B7D8-11D2-A1C6-00609778EA66}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{075BB8A1-B7D8-11D2-A1C6-00609778EA66}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{075BB8A1-B7D8-11D2-A1C6-00609778EA66}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$SYSDIR\\mpg4ds32.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{82CCD3E0-F71A-11D0-9FE5-00609778EA66}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{82CCD3E0-F71A-11D0-9FE5-00609778EA66}\FriendlyName = "Microcrap MPEG-4 Video Decompressor"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{82CCD3E0-F71A-11D0-9FE5-00609778EA66}\CLSID = "{82CCD3E0-F71A-11D0-9FE5-00609778EA66}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82CCD3E0-F71A-11D0-9FE5-00609778EA66}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{598EBA02-B49A-11D2-A1C1-00609778EA66}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82CCD3E0-F71A-11D0-9FE5-00609778EA66}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$SYSDIR\\mpg4ds32.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82CCD3E0-F71A-11D0-9FE5-00609778EA66}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{075BB8A1-B7D8-11D2-A1C6-00609778EA66}\ = "Microcrap MPEG-4 Video Decompressor About Page"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82CCD3E0-F71A-11D0-9FE5-00609778EA66}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82CCD3E0-F71A-11D0-9FE5-00609778EA66}\ = "Microcrap MPEG-4 Video Decompressor"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1544 wrote to memory of 892	1544	regsvr32.exe	30
PID 1544 wrote to memory of 892	1544	regsvr32.exe	30
PID 1544 wrote to memory of 892	1544	regsvr32.exe	30
PID 1544 wrote to memory of 892	1544	regsvr32.exe	30
PID 1544 wrote to memory of 892	1544	regsvr32.exe	30
PID 1544 wrote to memory of 892	1544	regsvr32.exe	30
PID 1544 wrote to memory of 892	1544	regsvr32.exe	30

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\$SYSDIR\mpg4ds32.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1544
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\$SYSDIR\mpg4ds32.dll
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:892

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

Windows 7 deprecation

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