1a53136236de4e35188ca138ba49309ccde1f1375b323f39b40b25b1e2b55c1c

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
16/03/2024, 05:51

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General

Target

cd465a1ea0dfc6fe14197d85fd52bfd6.dll
Size

212KB
MD5

cd465a1ea0dfc6fe14197d85fd52bfd6
SHA1

362088160f9294774b87eaa37e930dfc3ef09f39
SHA256

1a53136236de4e35188ca138ba49309ccde1f1375b323f39b40b25b1e2b55c1c
SHA512

09f2f7d6d0e08a94b9623fc97798e236f7e3126c5d9e0b01ae79afb0934a875797d1915040593404ef6e9c209c07b4ed6089de8eb591f233ee29ef4b81df8974
SSDEEP

3072:vZ65TQXOCTDYW2MOhxRRw9dDdbcWs/p9pzkXB6t3c5lY:jDXOFwfxsFAA

Score

10^/10

persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\btrklfr = "{336EF532-ADF6-41C0-BD5E-440214108D0C}"	rundll32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{336EF532-ADF6-41C0-BD5E-440214108D0C}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{336EF532-ADF6-41C0-BD5E-440214108D0C}\InProcServer32\ = "C:\\Windows\\btrklfr.dll"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{336EF532-ADF6-41C0-BD5E-440214108D0C}\InProcServer32	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1948 wrote to memory of 2104	1948	rundll32.exe	28
PID 1948 wrote to memory of 2104	1948	rundll32.exe	28
PID 1948 wrote to memory of 2104	1948	rundll32.exe	28
PID 1948 wrote to memory of 2104	1948	rundll32.exe	28
PID 1948 wrote to memory of 2104	1948	rundll32.exe	28
PID 1948 wrote to memory of 2104	1948	rundll32.exe	28
PID 1948 wrote to memory of 2104	1948	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\cd465a1ea0dfc6fe14197d85fd52bfd6.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1948
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\cd465a1ea0dfc6fe14197d85fd52bfd6.dll,#1
  2⤵
  - Adds autorun key to be loaded by Explorer.exe on startup
  - Modifies registry class
  PID:2104

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

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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