fed765bcb3c5b010e90ee520664fdd945e719e99c2bb7e17dc190cdbf530f2fb

Analysis

max time kernel
90s
max time network
143s
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 04:49

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General

Target

fed765bcb3c5b010e90ee520664fdd945e719e99c2bb7e17dc190cdbf530f2fb.dll
Size

80KB
MD5

8860dde3ce682f86c8802b891cb54775
SHA1

e3909fd5eff9481a182d5679f7bb6b845da931bc
SHA256

fed765bcb3c5b010e90ee520664fdd945e719e99c2bb7e17dc190cdbf530f2fb
SHA512

c582de1c3f2cddcb4676c4b647cf63bd26e6973dd1ecfbb831c1acea2e521e2bbf28de863e0b265f2f689f8839cbbf7990776a61d8744c07a455f5b6a7ff093c
SSDEEP

1536:5POOhfbOjovgdVydUgoNrwBZXGDaZ1QIxrfItMgR7ZaO+fGxHZPEb+p3k:5dbwovEVyqgoZmZXWfIdQdRaefPM+pU

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
744	arp.exe
3796	arp.exe
4144	arp.exe
4892	arp.exe
64	arp.exe
2032	arp.exe
880	arp.exe
1824	arp.exe
4504	arp.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/772-0-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/772-2-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1356	772	WerFault.exe	84

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	772	rundll32.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 516 wrote to memory of 772	516	rundll32.exe	84
PID 516 wrote to memory of 772	516	rundll32.exe	84
PID 516 wrote to memory of 772	516	rundll32.exe	84
PID 772 wrote to memory of 2032	772	rundll32.exe	86
PID 772 wrote to memory of 2032	772	rundll32.exe	86
PID 772 wrote to memory of 2032	772	rundll32.exe	86
PID 772 wrote to memory of 4504	772	rundll32.exe	89
PID 772 wrote to memory of 4504	772	rundll32.exe	89
PID 772 wrote to memory of 4504	772	rundll32.exe	89
PID 772 wrote to memory of 64	772	rundll32.exe	90
PID 772 wrote to memory of 64	772	rundll32.exe	90
PID 772 wrote to memory of 64	772	rundll32.exe	90
PID 772 wrote to memory of 1824	772	rundll32.exe	91
PID 772 wrote to memory of 1824	772	rundll32.exe	91
PID 772 wrote to memory of 1824	772	rundll32.exe	91
PID 772 wrote to memory of 4892	772	rundll32.exe	92
PID 772 wrote to memory of 4892	772	rundll32.exe	92
PID 772 wrote to memory of 4892	772	rundll32.exe	92
PID 772 wrote to memory of 4144	772	rundll32.exe	93
PID 772 wrote to memory of 4144	772	rundll32.exe	93
PID 772 wrote to memory of 4144	772	rundll32.exe	93
PID 772 wrote to memory of 3796	772	rundll32.exe	94
PID 772 wrote to memory of 3796	772	rundll32.exe	94
PID 772 wrote to memory of 3796	772	rundll32.exe	94
PID 772 wrote to memory of 744	772	rundll32.exe	95
PID 772 wrote to memory of 744	772	rundll32.exe	95
PID 772 wrote to memory of 744	772	rundll32.exe	95
PID 772 wrote to memory of 880	772	rundll32.exe	96
PID 772 wrote to memory of 880	772	rundll32.exe	96
PID 772 wrote to memory of 880	772	rundll32.exe	96

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\fed765bcb3c5b010e90ee520664fdd945e719e99c2bb7e17dc190cdbf530f2fb.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:516
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\fed765bcb3c5b010e90ee520664fdd945e719e99c2bb7e17dc190cdbf530f2fb.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:772
- - C:\Windows\SysWOW64\arp.exe
    arp -a
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:2032
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.0.1 72-fa-93-18-e9-ca
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4504
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.255.255 39-26-31-51-d9-75
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:64
- - C:\Windows\SysWOW64\arp.exe
    arp -s 136.243.76.170 bb-14-8f-67-59-1a
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1824
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.22 64-e9-dc-18-57-93
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4892
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.251 31-b6-d6-90-4b-fb
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4144
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.252 43-c5-2a-c4-46-d9
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:3796
- - C:\Windows\SysWOW64\arp.exe
    arp -s 239.255.255.250 a5-80-02-c7-53-cc
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:744
- - C:\Windows\SysWOW64\arp.exe
    arp -s 255.255.255.255 cd-76-81-c5-51-ca
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:880
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 772 -s 704
    3⤵
    - Program crash
    PID:1356

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 772 -ip 772
1⤵
PID:2044

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/772-0-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/772-2-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

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