8c2ecd1251a00ea84c020a4196d1aa282b1dc2328f3caaf4131906be62b2e3dd

Analysis

max time kernel
121s
max time network
127s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
25/08/2024, 11:30

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General

Target

Cool MP3 Splitter & Joiner/write.dll
Size

56KB
MD5

cb7ba2166a74d4b8957ac8098f5bd51e
SHA1

c00df33d2f12d3310133db38587122c7b521cb66
SHA256

30c9028265319903ebac4ea331ca6b87283ce70233649c637fb217da2c3f2537
SHA512

f357b7644adb1b8101116db3a0102beae10fd38599c772b95d985e4396ea7d8f77ef06f49d8bbd7c1ccc1d3add3be16100f27525bb0b8959f235cf0b24b0982f
SSDEEP

768:BTeapesFJ7gW6TLHBdnMOZ+8gKDKRlik/uGXqGdxBH7z:BCa4sFdgWAzrMOZ+89Kyk/ragH/

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 9 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{36A5F770-FE4C-11CE-A8ED-00AA002FEAB5}\ = "Dump"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{36A5F770-FE4C-11CE-A8ED-00AA002FEAB5}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{36A5F770-FE4C-11CE-A8ED-00AA002FEAB5}\CLSID = "{36A5F770-FE4C-11CE-A8ED-00AA002FEAB5}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{36A5F770-FE4C-11CE-A8ED-00AA002FEAB5}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{36A5F770-FE4C-11CE-A8ED-00AA002FEAB5}\FriendlyName = "Dump"	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{36A5F770-FE4C-11CE-A8ED-00AA002FEAB5}\FilterData = 020000000000200001000000000000003070693300000000000000000100000000000000000000003074793300000000380000003800000000000000000000000000000000000000	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{36A5F770-FE4C-11CE-A8ED-00AA002FEAB5}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{36A5F770-FE4C-11CE-A8ED-00AA002FEAB5}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{36A5F770-FE4C-11CE-A8ED-00AA002FEAB5}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Cool MP3 Splitter & Joiner\\write.dll"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2864 wrote to memory of 2868	2864	regsvr32.exe	30
PID 2864 wrote to memory of 2868	2864	regsvr32.exe	30
PID 2864 wrote to memory of 2868	2864	regsvr32.exe	30
PID 2864 wrote to memory of 2868	2864	regsvr32.exe	30
PID 2864 wrote to memory of 2868	2864	regsvr32.exe	30
PID 2864 wrote to memory of 2868	2864	regsvr32.exe	30
PID 2864 wrote to memory of 2868	2864	regsvr32.exe	30

C:\Windows\system32\regsvr32.exe
regsvr32 /s "C:\Users\Admin\AppData\Local\Temp\Cool MP3 Splitter & Joiner\write.dll"
1⤵
- Suspicious use of WriteProcessMemory
PID:2864
- C:\Windows\SysWOW64\regsvr32.exe
  /s "C:\Users\Admin\AppData\Local\Temp\Cool MP3 Splitter & Joiner\write.dll"
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:2868

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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