9c36e836116772df22669a1d5e2af11e49cd8425e730b457f5d6979ca6d00dae

Analysis

max time kernel
142s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
15-08-2024 02:46

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General

Target

$PLUGINSDIR/iewybf.dll
Size

29KB
MD5

4256ddc7ba4f2ab39fb28f081e870cfa
SHA1

8c1f0f6e94b68510bbffbf81143c5f26ebd913b6
SHA256

d519f718eca42250c87657b679a8a9d1766d331e6ee242d18bd739998bf44350
SHA512

a71ac74ad9d95c6b755858b0a75beaa3ec26e20eca252445a2d1541156d96bd39e39c30daa5eda28bafe8de2e2d67c2c70b25dce6b7f38f4ac0a0dfa60599c1a
SSDEEP

768:ubYYsBQJDh7wN4Ce10NUW5gPO8P9MOVAiTtm/MNJ:+IBQJDPGgPO8P9vAVm

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4620	60	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 7 IoCs

description	pid	Process	procid_target
PID 2880 wrote to memory of 60	2880	rundll32.exe	84
PID 2880 wrote to memory of 60	2880	rundll32.exe	84
PID 2880 wrote to memory of 60	2880	rundll32.exe	84
PID 60 wrote to memory of 3596	60	rundll32.exe	87
PID 60 wrote to memory of 3596	60	rundll32.exe	87
PID 60 wrote to memory of 3596	60	rundll32.exe	87
PID 60 wrote to memory of 3596	60	rundll32.exe	87

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\iewybf.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2880
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\iewybf.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:60
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\iewybf.dll,#1
    3⤵
    PID:3596
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 60 -s 728
    3⤵
    - Program crash
    PID:4620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 60 -ip 60
1⤵
PID:3664

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

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Downloads

memory/60-0-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

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memory/60-1-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

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