fa8064a6eca9a30e4525c9135d7ffb45a5d25dda297fa10f0e91bb721ea529f9

Analysis

max time kernel
93s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06/08/2024, 16:27

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General

Target

$PLUGINSDIR/jsis.dll
Size

127KB
MD5

2027121c3cdeb1a1f8a5f539d1fe2e28
SHA1

bcf79f49f8fc4c6049f33748ded21ec3471002c2
SHA256

1dae8b6de29f2cfc0745d9f2a245b9ecb77f2b272a5b43de1ba5971c43bf73a1
SHA512

5b0d9966ecc08bcc2c127b2bd916617b8de2dcbdc28aff7b4b8449a244983bfbe33c56f5c4a53b7cf21faf1dbab4bb845a5894492e7e10f3f517071f7a59727c
SSDEEP

3072:d3Zk9fOAewM0+W8NVH28fB948igEWo8P+fidax:d3qNOApM1G8fBpidWZ2

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5024	4440	WerFault.exe	84

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 3 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 4440	1996	rundll32.exe	84
PID 1996 wrote to memory of 4440	1996	rundll32.exe	84
PID 1996 wrote to memory of 4440	1996	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\jsis.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\jsis.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4440
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4440 -s 632
    3⤵
    - Program crash
    PID:5024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4440 -ip 4440
1⤵
PID:4656

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

Windows 7 deprecation

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