6db345ff7f370b0785a5ce1a0f3e8d9b2a8d8fb6a236d29744c87749868adc50

Analysis

max time kernel
119s
max time network
120s
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

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General

Target

IVMSource.dll
Size

216KB
MD5

261ceeafb613f8ae1ec96814a0a4ed8f
SHA1

a6c16e93f48c7381708496dc718ea32debff445f
SHA256

6f73f81f6f50b533b2ae1111ad78ebc3600d41947012cfc0adbe9f790ac0c0fe
SHA512

a524b254c5c8833d0423d934dbb498fef5734aa42152b361bd0d1c345377224b9549a45027ddbea93918883a0e7601c9544407f0b17f93c45ef41fcc099110a5
SSDEEP

3072:sIIzd882eINJu9SSk3yOioUWgjaDt1x0QHYjFzVx0Z/LyyK9FRt8tThhiBhMThZ9:d6SSk3Hw8YZzVIzhrMBksIgFHg62

Score

5^/10

discovery

Malware Config

Signatures

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\ils.ini	regsvr32.exe

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 20 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\ivmfile\shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\\\mplayerc.exe\" \"%1\""	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6B8CF995-434B-49D3-856A-2AC9B16539A8}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\IVMSource.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6B8CF995-434B-49D3-856A-2AC9B16539A8}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Applications	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Applications\ivmplayer.exe	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Applications\ivmplayer.exe\shell\open	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Applications\ivmplayer.exe\shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\\\mplayerc.exe\" \"%1\""	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6B8CF995-434B-49D3-856A-2AC9B16539A8}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{6B8CF995-434B-49D3-856A-2AC9B16539A8}\CLSID = "{6B8CF995-434B-49D3-856A-2AC9B16539A8}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Applications\ivmplayer.exe\shell\open\command	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ivmfile	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ivmfile\shell\open	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{6B8CF995-434B-49D3-856A-2AC9B16539A8}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{6B8CF995-434B-49D3-856A-2AC9B16539A8}\FriendlyName = "IVM File Source"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Applications\ivmplayer.exe\shell	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ivmfile\shell\open\command	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6B8CF995-434B-49D3-856A-2AC9B16539A8}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6B8CF995-434B-49D3-856A-2AC9B16539A8}\ = "IVM File Source"	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{6B8CF995-434B-49D3-856A-2AC9B16539A8}\FilterData = 020000000000600001000000000000003070693308000000000000000100000000000000000000003074793300000000380000004800000083eb36e44f52ce119f530020af0ba77000000000000000000000000000000000	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ivmfile\shell	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2444 wrote to memory of 2900	2444	regsvr32.exe	28
PID 2444 wrote to memory of 2900	2444	regsvr32.exe	28
PID 2444 wrote to memory of 2900	2444	regsvr32.exe	28
PID 2444 wrote to memory of 2900	2444	regsvr32.exe	28
PID 2444 wrote to memory of 2900	2444	regsvr32.exe	28
PID 2444 wrote to memory of 2900	2444	regsvr32.exe	28
PID 2444 wrote to memory of 2900	2444	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\IVMSource.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2444
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\IVMSource.dll
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:2900

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

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Downloads

memory/2900-0-0x0000000000330000-0x000000000034C000-memory.dmp

Filesize
112KB

Download
memory/2900-1-0x0000000000350000-0x0000000000376000-memory.dmp

Filesize
152KB

Download