bb54d934fb889f8ee44c4dfd86cec68b92a95415ad13b3068035f2ec6f381804

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
29/09/2024, 00:07 UTC

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General

Target

MP4转换器/codecs/acelpdec.dll
Size

60KB
MD5

07f0d6cc92e62b802c0147d9347bbe90
SHA1

fabf515bb827f691829c3384e273946876490a9b
SHA256

9b3e2ad88a302f9f75727df60d2d7471dbd241dd0dead835f2aa4561b9453bc0
SHA512

a860ac6898710abaa6fd686f43854db1c59a03d4042c9a9dea7954031ea1c48dcab97f3834a34740daecdd7db9f2b24afe9249787fcfe179e27e00173ac7ccf3
SSDEEP

1536:h/vT79aeU+BsBXOBqEHdjOLwKI7ZWTs7ll8k:ZvT7979BXLHdS5I7ZWTKll8

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
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4009F700-AEBA-11D1-8344-00C04FB92EB7}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4009F700-AEBA-11D1-8344-00C04FB92EB7}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{4009F700-AEBA-11D1-8344-00C04FB92EB7}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{4009F700-AEBA-11D1-8344-00C04FB92EB7}\FriendlyName = "ACELP.net Sipro Lab Audio Decoder"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4009F700-AEBA-11D1-8344-00C04FB92EB7}\ = "ACELP.net Audio Decoder"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4009F700-AEBA-11D1-8344-00C04FB92EB7}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MP4???\\codecs\\acelpdec.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{4009F700-AEBA-11D1-8344-00C04FB92EB7}\CLSID = "{4009F700-AEBA-11D1-8344-00C04FB92EB7}"	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{4009F700-AEBA-11D1-8344-00C04FB92EB7}\FilterData = 0200000001008000020000000000000030706933000000000000000001000000000000000000000030747933000000006000000070000000317069330800000000000000010000000000000000000000307479330000000060000000800000006175647300001000800000aa00389b713001000000001000800000aa00389b710100000000001000800000aa00389b71	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4009F700-AEBA-11D1-8344-00C04FB92EB7}	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2436 wrote to memory of 2092	2436	regsvr32.exe	31
PID 2436 wrote to memory of 2092	2436	regsvr32.exe	31
PID 2436 wrote to memory of 2092	2436	regsvr32.exe	31
PID 2436 wrote to memory of 2092	2436	regsvr32.exe	31
PID 2436 wrote to memory of 2092	2436	regsvr32.exe	31
PID 2436 wrote to memory of 2092	2436	regsvr32.exe	31
PID 2436 wrote to memory of 2092	2436	regsvr32.exe	31

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\MP4转换器\codecs\acelpdec.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2436
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\MP4转换器\codecs\acelpdec.dll
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:2092

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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