fb220aa054951b1dc0f7984d668816a9bf04cf05d153c65613a927760db9edb7

Analysis

max time kernel
143s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
04/12/2022, 01:05

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General

Target

fb220aa054951b1dc0f7984d668816a9bf04cf05d153c65613a927760db9edb7.dll
Size

213KB
MD5

1be3512e2030086fc638204e73afa160
SHA1

c6e6c2259f5cc5349e0db4155434454e59d0f05e
SHA256

fb220aa054951b1dc0f7984d668816a9bf04cf05d153c65613a927760db9edb7
SHA512

a0e0553f6e936f617da1de61f70f3abe406ca5452174b27064c50a3cdca6070d874bcc1ff157c8a1f77f204fcd6577d5809edf814e316975c1c7b0e6f66105bd
SSDEEP

3072:Z59dDcVwmS4TQxHi8Synsc/Dop3AmSrrp69wiQHVED0/9WIt:ZJwSi+Sc/DWQXVAKVED0//

Score

6^/10

persistence

Malware Config

Signatures

Enumerates connected drives 3 TTPs 2 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe

Modifies WinLogon 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\SfcDisable = "0"	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2652	3284	WerFault.exe	80

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeSecurityPrivilege	3284	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2960 wrote to memory of 3284	2960	rundll32.exe	80
PID 2960 wrote to memory of 3284	2960	rundll32.exe	80
PID 2960 wrote to memory of 3284	2960	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\fb220aa054951b1dc0f7984d668816a9bf04cf05d153c65613a927760db9edb7.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2960
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\fb220aa054951b1dc0f7984d668816a9bf04cf05d153c65613a927760db9edb7.dll,#1
  2⤵
  - Enumerates connected drives
  - Modifies WinLogon
  - Suspicious use of AdjustPrivilegeToken
  PID:3284
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3284 -s 704
    3⤵
    - Program crash
    PID:2652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3284 -ip 3284
1⤵
PID:692

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3284-133-0x0000000076C60000-0x0000000076C9D000-memory.dmp

Filesize
244KB

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