73fb2f9e20d4242c9b4c42d9b16d04a4ba7215a8cccf4d21c6d85926e14233fa

Analysis

max time kernel
94s
max time network
130s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03/09/2024, 22:36

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General

Target

grando.dll
Size

73.3MB
MD5

4a80191a2d6a3b7c5f8c0dccfcd3991b
SHA1

45fdeea31c16fc2f65485172e13fdf687d3a15d8
SHA256

73fb2f9e20d4242c9b4c42d9b16d04a4ba7215a8cccf4d21c6d85926e14233fa
SHA512

d0886fae12b169cd2be6827cad146c505417cf8241a3159acae1d94d38159097c99cdced371c8cb0a7fc5c293f944b64af49a2090555e7702b49a72e151adc02
SSDEEP

393216:j22jUPP2urAAVeEvpaZ+25FcHTylRtLRB1PYdK4iO5iPGfsNdUTm34Dsq8fd0B/S:SSl3PyKz4

Score

3^/10

discovery

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3468	4580	WerFault.exe	83

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 SetWindowsHookEx 4 IoCs

pid	Process
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1744 wrote to memory of 4580	1744	rundll32.exe	83
PID 1744 wrote to memory of 4580	1744	rundll32.exe	83
PID 1744 wrote to memory of 4580	1744	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\grando.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1744
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\grando.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4580
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4580 -s 1164
    3⤵
    - Program crash
    PID:3468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4580 -ip 4580
1⤵
PID:3604

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

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/4580-0-0x0000000002AD0000-0x0000000005028000-memory.dmp

Filesize
37.3MB

Download
memory/4580-2-0x0000000002AE1000-0x0000000002AE2000-memory.dmp

Filesize
4KB

Download
memory/4580-3-0x0000000002AD0000-0x0000000005028000-memory.dmp

Filesize
37.3MB

Download
memory/4580-4-0x0000000002AD0000-0x0000000005028000-memory.dmp

Filesize
37.3MB

Download
memory/4580-5-0x0000000002AD0000-0x0000000005028000-memory.dmp

Filesize
37.3MB

Download