6ef94526277cbd63b6f7d51fe802750efe323dea5bfcf743766d946c282e03fd

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
30-09-2024 00:09

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General

Target

$SYSDIR/divxdec.dll
Size

712KB
MD5

8d4ae6d727a26f5ce5bbe224bb017be5
SHA1

3307eb5f3deefd80a8012b219fd02a504d8ae6c9
SHA256

24a94ae9cac79f6bbe65020099a26b9cd06018306c6561a907b8e2e99989884e
SHA512

4c55d7388ba7e2063bcd85812ced3f3c77a65e73997de558284d19175328ca78ef45f86d2e232599e57fc4c586911fa07d7ff4fa457a7ae066a4dfa1a0f706ab
SSDEEP

12288:PZk+r/xSZiOnvpJo3c8K2hkl7BrDSzp7f0ooIeuCgu:hka/swOnvpms8K2hkl7xDSt7f3R7hu

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\{78766964-0000-0010-8000-00AA00389B71}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1ADD57B8-A7A9-4518-B9B5-862590FF9EB4}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1ADD57B8-A7A9-4518-B9B5-862590FF9EB4}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1ADD57B8-A7A9-4518-B9B5-862590FF9EB4}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$SYSDIR\\divxdec.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CF49D4E0-1115-11CE-B03A-0020AF0BA770}\Instance\CLSID_DivXDeux	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CF49D4E0-1115-11CE-B03A-0020AF0BA770}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{78766964-0000-0010-8000-00AA00389B71}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CF49D4E0-1115-11CE-B03A-0020AF0BA770}\Instance	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1ADD57B8-A7A9-4518-B9B5-862590FF9EB4}\ = "DivX Decoder Filter Help Page"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1ADD57B8-A7A9-4518-B9B5-862590FF9EB4}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{78766964-0000-0010-8000-00AA00389B71}\FilterData = 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	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{78766964-0000-0010-8000-00AA00389B71}\ = "DivX Decoder Filter"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{78766964-0000-0010-8000-00AA00389B71}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$SYSDIR\\divxdec.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{78766964-0000-0010-8000-00AA00389B71}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{78766964-0000-0010-8000-00AA00389B71}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{78766964-0000-0010-8000-00AA00389B71}\CLSID = "{78766964-0000-0010-8000-00AA00389B71}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{78766964-0000-0010-8000-00AA00389B71}\FriendlyName = "DivX Decoder Filter"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1184 wrote to memory of 1696	1184	regsvr32.exe	82
PID 1184 wrote to memory of 1696	1184	regsvr32.exe	82
PID 1184 wrote to memory of 1696	1184	regsvr32.exe	82

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\$SYSDIR\divxdec.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\$SYSDIR\divxdec.dll
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:1696

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

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