efc8a72506428c079dab4fadbd76d6c5c1606c0e8b71feb1148f2f2109040571

Analysis

max time kernel
114s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
08/09/2024, 23:10

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General

Target
51f9ff3304b1ceba52bccec6531b09e0N.dll
Size 76KB
Sample240908-2547pasflb
SHA256 efc8a72506428c079dab4fadbd76d6c5c1606c0e8b71feb1148f2f2109040571
MD5 51f9ff3304b1ceba52bccec6531b09e0
SHA1 530be2f6e9054c5c70acf5889b78af63396815f3
SHA512 e18b5c27f1dc596f8e2b7dbcd76b0f93b89a4486640bfc91286d1c064a4d5b7cc87c5ac075f66f9fac0c86d7d47ff5bd2ae3ef75877cfa78c742beddd617f947
SSDEEP 1536:YjV8y93KQpFQmPLRk7G50zy/riF12jvRyo0hQk7Z285WsjLjy:c8y93KQjy7G55riF1cMo03cyW8e
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

discovery upx

Malware Config

Signatures

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4936-0-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4936-1-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4516	4936	WerFault.exe	92

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 AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4936	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 536 wrote to memory of 4936	536	rundll32.exe	92
PID 536 wrote to memory of 4936	536	rundll32.exe	92
PID 536 wrote to memory of 4936	536	rundll32.exe	92

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\51f9ff3304b1ceba52bccec6531b09e0N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:536
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\51f9ff3304b1ceba52bccec6531b09e0N.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4936
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4936 -s 712
    3⤵
    - Program crash
    PID:4516

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4936 -ip 4936
1⤵
PID:2068

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=3932,i,4356837537417149674,16553092232944545509,262144 --variations-seed-version --mojo-platform-channel-handle=4100 /prefetch:8
1⤵
PID:4600

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

Replay Monitor

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Downloads

memory/4936-0-0x0000000010000000-0x0000000010030000-memory.dmp

Download

memory/4936-1-0x0000000010000000-0x0000000010030000-memory.dmp