6c9513d36b96aa9b994cb314748a788a15d9cca9fc6e46d0456364d5287550d7

Resubmissions

26-08-2024 11:24

240826-nh2ama1bqa 3

26-08-2024 11:20

240826-nfx57a1aqh 6

Analysis

max time kernel
594s
max time network
601s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
26-08-2024 11:20

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General

Target

$PLUGINSDIR/BgWorker.dll
Size

2KB
MD5

33ec04738007e665059cf40bc0f0c22b
SHA1

4196759a922e333d9b17bda5369f14c33cd5e3bc
SHA256

50f735ab8f3473423e6873d628150bbc0777be7b4f6405247cddf22bb00fb6be
SHA512

2318b01f0c2f2f021a618ca3e6e5c24a94df5d00154766b77160203b8b0a177c8581c7b688ffe69be93a69bc7fd06b8a589844d42447f5060fb4bcf94d8a9aef

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

896 1732 WerFault.exe rundll32.exe
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

Processes:

rundll32.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe

pid	pid_target	process	target process
896	1732	WerFault.exe	rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 1924 wrote to memory of 1732	1924	rundll32.exe	rundll32.exe
PID 1924 wrote to memory of 1732	1924	rundll32.exe	rundll32.exe
PID 1924 wrote to memory of 1732	1924	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\BgWorker.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1924

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\BgWorker.dll,#1
2⤵
- System Location Discovery: System Language Discovery
PID:1732

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1732 -s 604
3⤵
- Program crash
PID:896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1732 -ip 1732
1⤵
PID:2868

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=1904,i,8293235976513689021,7261015831736501466,262144 --variations-seed-version --mojo-platform-channel-handle=4340 /prefetch:8
1⤵
PID:3948

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=3908,i,8293235976513689021,7261015831736501466,262144 --variations-seed-version --mojo-platform-channel-handle=1020 /prefetch:8
1⤵
PID:2900

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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