ae0ba7ecf43d1ee0a4cb8784d3730d56b773b95e7518bd9842d8defed69e83e8

Analysis

max time kernel
94s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-11-2024 12:23

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General

Target

bs_load.dll
Size

466KB
MD5

15abbe3c15e018da7ef56841af33cb74
SHA1

7a91dca0f03b175929ded67625d79a5430c3ceff
SHA256

c0980bfddf43bbd6df2441f2dfa46f98f04b7b4d0f4f079b60abaaa21a1ab3e0
SHA512

c84e95cca9f8b901fe904937b70c23f7b86dc1037905d8bf0c6f8602a41abf4305bc1eb925447c1b74123d974b2f752eccfdd184ddf6cef6d7eb7194832d2ce1
SSDEEP

12288:EBQstBghoWlHkXMzIuZFquh4cilkfiEW:8DYhoWlHml3u9iqf

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\{3E0FA044-926C-42D9-BA12-EF16E980913B}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3E0FA044-926C-42D9-BA12-EF16E980913B}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{3E0FA044-926C-42D9-BA12-EF16E980913B}\CLSID = "{3E0FA044-926C-42D9-BA12-EF16E980913B}"	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{3E0FA044-926C-42D9-BA12-EF16E980913B}\FilterData = 020000000000200001000000000000003070693308000000000000000100000000000000000000003074793300000000380000000000000083eb36e44f52ce119f530020af0ba770	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3E0FA044-926C-42D9-BA12-EF16E980913B}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3E0FA044-926C-42D9-BA12-EF16E980913B}\ = "AsyncEx"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3E0FA044-926C-42D9-BA12-EF16E980913B}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\bs_load.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{3E0FA044-926C-42D9-BA12-EF16E980913B}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{3E0FA044-926C-42D9-BA12-EF16E980913B}\FriendlyName = "AsyncEx"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 816 wrote to memory of 836	816	regsvr32.exe	85
PID 816 wrote to memory of 836	816	regsvr32.exe	85
PID 816 wrote to memory of 836	816	regsvr32.exe	85

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\bs_load.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:816
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\bs_load.dll
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:836

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

Replay Monitor

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Downloads

memory/836-0-0x0000000000A60000-0x0000000000ADA000-memory.dmp

Filesize
488KB

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