0b85a0202bffe1551435d7d507bf67e452d701ddf3736df8655014a3157b4522

Analysis

max time kernel
119s
max time network
18s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
07/08/2024, 07:54

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General

Target

RtlLib.dll
Size

361KB
MD5

dfaf646ddaebb012dfbfc9003dd43c8f
SHA1

e508dd7366349caa24d935697ba0b95a8a52d366
SHA256

75fd5c6336369cf994d81ed49ceadc09c9ee78fb31946061baed621e3504a42d
SHA512

4b25b934adb77ae3baa23eeefce54eb684573cb21e71e8f4ad89fcbb73bc0155771f72ffc7dde72ef01f3a93f3627dd53bb258b5be452b6161f4411a5394ade2
SSDEEP

6144:WWl6PziMx2kt/u0UyJ1h4h/fHKGgZJv+IpPFwa3opJ:WWlwiMxr224hqvtw2AJ

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2732	1892	WerFault.exe	30

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	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2072 wrote to memory of 1892	2072	rundll32.exe	30
PID 2072 wrote to memory of 1892	2072	rundll32.exe	30
PID 2072 wrote to memory of 1892	2072	rundll32.exe	30
PID 2072 wrote to memory of 1892	2072	rundll32.exe	30
PID 2072 wrote to memory of 1892	2072	rundll32.exe	30
PID 2072 wrote to memory of 1892	2072	rundll32.exe	30
PID 2072 wrote to memory of 1892	2072	rundll32.exe	30
PID 1892 wrote to memory of 2732	1892	rundll32.exe	31
PID 1892 wrote to memory of 2732	1892	rundll32.exe	31
PID 1892 wrote to memory of 2732	1892	rundll32.exe	31
PID 1892 wrote to memory of 2732	1892	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\RtlLib.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2072
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\RtlLib.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1892
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1892 -s 452
    3⤵
    - Program crash
    PID:2732

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/1892-0-0x0000000000320000-0x000000000039C000-memory.dmp

Filesize
496KB

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