a3da8aaaf439be346fdb26bb918efaedef2955be88bd4f53860c2a4812fbb5d1

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
27-12-2024 01:16

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General

Target

a3da8aaaf439be346fdb26bb918efaedef2955be88bd4f53860c2a4812fbb5d1.dll
Size

80KB
MD5

bf937b141d9b925050d8dd6c85fbc3a3
SHA1

531cf97ebbe39fd2dcfc6d6090fd9fbb771b3f84
SHA256

a3da8aaaf439be346fdb26bb918efaedef2955be88bd4f53860c2a4812fbb5d1
SHA512

f4bd0793fa8b2d1e60403fd7b973bce457c6e0b87c472e5423fccb22d0c45e886915db38aab88cc42c02a58951efa36e37b0c378639af5b6ac974dd39a449d5a
SSDEEP

1536:5POOhfbOjovgdVydUgoNrwBZXGDaZ1QIxrfItMgR7ZaO+fGxHZPEg6ZV:5dbwovEVyqgoZmZXWfIdQdRaefP2

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
3900	arp.exe
3692	arp.exe
5036	arp.exe
4724	arp.exe
5024	arp.exe
4900	arp.exe
4984	arp.exe
1924	arp.exe
1268	arp.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1880-0-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/1880-2-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4152	1880	WerFault.exe	83

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	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
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	1880	rundll32.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1224 wrote to memory of 1880	1224	rundll32.exe	83
PID 1224 wrote to memory of 1880	1224	rundll32.exe	83
PID 1224 wrote to memory of 1880	1224	rundll32.exe	83
PID 1880 wrote to memory of 4984	1880	rundll32.exe	84
PID 1880 wrote to memory of 4984	1880	rundll32.exe	84
PID 1880 wrote to memory of 4984	1880	rundll32.exe	84
PID 1880 wrote to memory of 3900	1880	rundll32.exe	88
PID 1880 wrote to memory of 3900	1880	rundll32.exe	88
PID 1880 wrote to memory of 3900	1880	rundll32.exe	88
PID 1880 wrote to memory of 4724	1880	rundll32.exe	89
PID 1880 wrote to memory of 4724	1880	rundll32.exe	89
PID 1880 wrote to memory of 4724	1880	rundll32.exe	89
PID 1880 wrote to memory of 5036	1880	rundll32.exe	90
PID 1880 wrote to memory of 5036	1880	rundll32.exe	90
PID 1880 wrote to memory of 5036	1880	rundll32.exe	90
PID 1880 wrote to memory of 4900	1880	rundll32.exe	91
PID 1880 wrote to memory of 4900	1880	rundll32.exe	91
PID 1880 wrote to memory of 4900	1880	rundll32.exe	91
PID 1880 wrote to memory of 1924	1880	rundll32.exe	92
PID 1880 wrote to memory of 1924	1880	rundll32.exe	92
PID 1880 wrote to memory of 1924	1880	rundll32.exe	92
PID 1880 wrote to memory of 3692	1880	rundll32.exe	95
PID 1880 wrote to memory of 3692	1880	rundll32.exe	95
PID 1880 wrote to memory of 3692	1880	rundll32.exe	95
PID 1880 wrote to memory of 5024	1880	rundll32.exe	96
PID 1880 wrote to memory of 5024	1880	rundll32.exe	96
PID 1880 wrote to memory of 5024	1880	rundll32.exe	96
PID 1880 wrote to memory of 1268	1880	rundll32.exe	97
PID 1880 wrote to memory of 1268	1880	rundll32.exe	97
PID 1880 wrote to memory of 1268	1880	rundll32.exe	97

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a3da8aaaf439be346fdb26bb918efaedef2955be88bd4f53860c2a4812fbb5d1.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1224
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a3da8aaaf439be346fdb26bb918efaedef2955be88bd4f53860c2a4812fbb5d1.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1880
- - C:\Windows\SysWOW64\arp.exe
    arp -a
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4984
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.0.1 f3-53-2d-53-5c-05
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:3900
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.255.255 cc-52-03-32-48-4b
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4724
- - C:\Windows\SysWOW64\arp.exe
    arp -s 136.243.76.21 9b-0b-27-1f-3f-17
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:5036
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.22 0f-e0-5d-51-06-a6
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4900
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.251 14-94-d3-ce-77-49
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1924
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.252 d1-c3-71-79-fe-bc
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:3692
- - C:\Windows\SysWOW64\arp.exe
    arp -s 239.255.255.250 65-7c-d3-91-ee-87
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:5024
- - C:\Windows\SysWOW64\arp.exe
    arp -s 255.255.255.255 d0-75-ba-66-c3-6d
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1268
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1880 -s 716
    3⤵
    - Program crash
    PID:4152

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1880 -ip 1880
1⤵
PID:860

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/1880-0-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/1880-2-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download