b15437fc76b3d06fa4b6ff903611c14f89e84bed14213493e9d9bf8f424d83d3

Analysis

max time kernel
92s
max time network
93s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
25-12-2024 19:19

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General

Target

b15437fc76b3d06fa4b6ff903611c14f89e84bed14213493e9d9bf8f424d83d3.dll
Size

80KB
MD5

b7d38da075892a125e8f9ce9c40ea437
SHA1

31f004e8ecb17ba6e6cfa359b98cdd966682717a
SHA256

b15437fc76b3d06fa4b6ff903611c14f89e84bed14213493e9d9bf8f424d83d3
SHA512

95ef3abd12796fe82f511a673d3c6acc3921a0cbd66c8bcb88aa3e81c4c251d20d08577235e857f67e759e757090a3e93a75b36294f9ec39c95b8d9c86698a2e
SSDEEP

1536:5POOhfbOjovgdVydUgoNrwBZXGDaZ1QIxrfItMgR7ZaO+fGxHZPEANHOjv:5dbwovEVyqgoZmZXWfIdQdRaefPDHOjv

Score

8^/10

discovery persistence privilege_escalation upx

Malware Config

Signatures

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

Network Service Discovery 1 TTPs 9 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
2420	arp.exe
3880	arp.exe
1388	arp.exe
2232	arp.exe
1632	arp.exe
2424	arp.exe
4464	arp.exe
1472	arp.exe
4364	arp.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4584-0-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/4584-1-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4732	4584	WerFault.exe	82

System Location Discovery: System Language Discovery 1 TTPs 10 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	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4584	rundll32.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3348 wrote to memory of 4584	3348	rundll32.exe	82
PID 3348 wrote to memory of 4584	3348	rundll32.exe	82
PID 3348 wrote to memory of 4584	3348	rundll32.exe	82
PID 4584 wrote to memory of 2232	4584	rundll32.exe	83
PID 4584 wrote to memory of 2232	4584	rundll32.exe	83
PID 4584 wrote to memory of 2232	4584	rundll32.exe	83
PID 4584 wrote to memory of 2424	4584	rundll32.exe	87
PID 4584 wrote to memory of 2424	4584	rundll32.exe	87
PID 4584 wrote to memory of 2424	4584	rundll32.exe	87
PID 4584 wrote to memory of 1388	4584	rundll32.exe	88
PID 4584 wrote to memory of 1388	4584	rundll32.exe	88
PID 4584 wrote to memory of 1388	4584	rundll32.exe	88
PID 4584 wrote to memory of 3880	4584	rundll32.exe	89
PID 4584 wrote to memory of 3880	4584	rundll32.exe	89
PID 4584 wrote to memory of 3880	4584	rundll32.exe	89
PID 4584 wrote to memory of 1632	4584	rundll32.exe	90
PID 4584 wrote to memory of 1632	4584	rundll32.exe	90
PID 4584 wrote to memory of 1632	4584	rundll32.exe	90
PID 4584 wrote to memory of 2420	4584	rundll32.exe	91
PID 4584 wrote to memory of 2420	4584	rundll32.exe	91
PID 4584 wrote to memory of 2420	4584	rundll32.exe	91
PID 4584 wrote to memory of 4364	4584	rundll32.exe	94
PID 4584 wrote to memory of 4364	4584	rundll32.exe	94
PID 4584 wrote to memory of 4364	4584	rundll32.exe	94
PID 4584 wrote to memory of 1472	4584	rundll32.exe	97
PID 4584 wrote to memory of 1472	4584	rundll32.exe	97
PID 4584 wrote to memory of 1472	4584	rundll32.exe	97
PID 4584 wrote to memory of 4464	4584	rundll32.exe	98
PID 4584 wrote to memory of 4464	4584	rundll32.exe	98
PID 4584 wrote to memory of 4464	4584	rundll32.exe	98

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b15437fc76b3d06fa4b6ff903611c14f89e84bed14213493e9d9bf8f424d83d3.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3348
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\b15437fc76b3d06fa4b6ff903611c14f89e84bed14213493e9d9bf8f424d83d3.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4584
- - C:\Windows\SysWOW64\arp.exe
    arp -a
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:2232
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.0.1 2e-8b-51-53-ef-5e
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:2424
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.255.255 41-5a-6c-34-52-7f
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1388
- - C:\Windows\SysWOW64\arp.exe
    arp -s 49.12.169.207 15-a8-8e-58-88-29
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:3880
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.22 a5-0a-01-d3-0a-cf
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1632
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.251 fb-93-7c-99-74-60
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:2420
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.252 de-1e-e6-69-13-ea
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4364
- - C:\Windows\SysWOW64\arp.exe
    arp -s 239.255.255.250 1c-b2-07-15-ef-17
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1472
- - C:\Windows\SysWOW64\arp.exe
    arp -s 255.255.255.255 e6-e8-e6-30-6b-cb
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4464
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4584 -s 728
    3⤵
    - Program crash
    PID:4732

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4584 -ip 4584
1⤵
PID:2720

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Privilege Escalation

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4584-0-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/4584-1-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download