4fb17ba8b6943800a972385c7fde7e8e45fc4b1a6b6edfb0dcdad3671243f480

Analysis

max time kernel
131s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
07/09/2024, 05:02

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General

Target

temp/modules/auxr.dll
Size

63KB
MD5

028f7e21f1af85cda9f56b17e070a351
SHA1

eb41bfa32295408105f37e58da3d8e6d99372335
SHA256

562ba29edb59b0032402ae913ec270e463b4b1f7c5ec58a746b744db0521b6c3
SHA512

f362c68c264e9f9a84f42d5ea2e4a9f8d153c8c2de56c4f44ff042f779b718418ee31f92f1c14b5d80181c55c0d2ee2906836079a0052135832a12b4946c04f4
SSDEEP

768:XQkBeqgp6xFpvVAdSNifT+PqsUtLfO10a5LiE0r9RahAN6XoTzvouxbvTJ:XQIe1iAdkifT+otfOTefsAwoTzvzd

Score

7^/10

discovery

Malware Config

Signatures

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1884	2548	WerFault.exe	90

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 4752 wrote to memory of 2548	4752	rundll32.exe	90
PID 4752 wrote to memory of 2548	4752	rundll32.exe	90
PID 4752 wrote to memory of 2548	4752	rundll32.exe	90

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\temp\modules\auxr.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4752
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\temp\modules\auxr.dll,#1
  2⤵
  - Checks BIOS information in registry
  - System Location Discovery: System Language Discovery
  PID:2548
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2548 -s 624
    3⤵
    - Program crash
    PID:1884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2548 -ip 2548
1⤵
PID:5008

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4360,i,7447299413640964517,4240724842020506306,262144 --variations-seed-version --mojo-platform-channel-handle=4408 /prefetch:8
1⤵
PID:2792

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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