a75835a6dc893740b6dc0eea624727181e39265f3221148c1543e8aabc6e5633

Analysis

max time kernel
91s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03/01/2025, 12:55

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General

Target

a75835a6dc893740b6dc0eea624727181e39265f3221148c1543e8aabc6e5633N.dll
Size

80KB
MD5

85c11b1f4a4d1292f48b119c63b56a90
SHA1

3fdbeb5acac2246055fad8a45e1df7ff05e3480c
SHA256

a75835a6dc893740b6dc0eea624727181e39265f3221148c1543e8aabc6e5633
SHA512

15e4b90ce117f6640fbadb38b01872cc91a1bd4b55241d6cf9ae88a5591ad272d1e61bdfa2f7603b9ef5348b017683d72be3dd253193e1c28cd0b85f149ee765
SSDEEP

1536:5POOhfbOjovgdVydUgoNrwBZXGDaZ1QIxrfItMgR7ZaO+fGxHZPEI9z:5dbwovEVyqgoZmZXWfIdQdRaefP1z

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
1872	arp.exe
2132	arp.exe
816	arp.exe
4192	arp.exe
3496	arp.exe
1492	arp.exe
1976	arp.exe
3644	arp.exe
4468	arp.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4992-0-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/4992-2-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
320	4992	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	4992	rundll32.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1064 wrote to memory of 4992	1064	rundll32.exe	83
PID 1064 wrote to memory of 4992	1064	rundll32.exe	83
PID 1064 wrote to memory of 4992	1064	rundll32.exe	83
PID 4992 wrote to memory of 3644	4992	rundll32.exe	85
PID 4992 wrote to memory of 3644	4992	rundll32.exe	85
PID 4992 wrote to memory of 3644	4992	rundll32.exe	85
PID 4992 wrote to memory of 4468	4992	rundll32.exe	88
PID 4992 wrote to memory of 4468	4992	rundll32.exe	88
PID 4992 wrote to memory of 4468	4992	rundll32.exe	88
PID 4992 wrote to memory of 1872	4992	rundll32.exe	89
PID 4992 wrote to memory of 1872	4992	rundll32.exe	89
PID 4992 wrote to memory of 1872	4992	rundll32.exe	89
PID 4992 wrote to memory of 1976	4992	rundll32.exe	90
PID 4992 wrote to memory of 1976	4992	rundll32.exe	90
PID 4992 wrote to memory of 1976	4992	rundll32.exe	90
PID 4992 wrote to memory of 1492	4992	rundll32.exe	91
PID 4992 wrote to memory of 1492	4992	rundll32.exe	91
PID 4992 wrote to memory of 1492	4992	rundll32.exe	91
PID 4992 wrote to memory of 816	4992	rundll32.exe	92
PID 4992 wrote to memory of 816	4992	rundll32.exe	92
PID 4992 wrote to memory of 816	4992	rundll32.exe	92
PID 4992 wrote to memory of 3496	4992	rundll32.exe	93
PID 4992 wrote to memory of 3496	4992	rundll32.exe	93
PID 4992 wrote to memory of 3496	4992	rundll32.exe	93
PID 4992 wrote to memory of 4192	4992	rundll32.exe	94
PID 4992 wrote to memory of 4192	4992	rundll32.exe	94
PID 4992 wrote to memory of 4192	4992	rundll32.exe	94
PID 4992 wrote to memory of 2132	4992	rundll32.exe	95
PID 4992 wrote to memory of 2132	4992	rundll32.exe	95
PID 4992 wrote to memory of 2132	4992	rundll32.exe	95

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a75835a6dc893740b6dc0eea624727181e39265f3221148c1543e8aabc6e5633N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1064
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a75835a6dc893740b6dc0eea624727181e39265f3221148c1543e8aabc6e5633N.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4992
- - C:\Windows\SysWOW64\arp.exe
    arp -a
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:3644
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.0.1 32-2b-d4-91-c2-38
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4468
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.255.255 62-7f-21-97-b1-a3
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1872
- - C:\Windows\SysWOW64\arp.exe
    arp -s 136.243.76.173 f6-c5-c2-a1-eb-f8
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1976
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.22 a6-6f-3a-49-15-62
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1492
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.251 e9-5b-ae-7a-00-ae
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:816
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.252 c3-6a-33-80-78-2f
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:3496
- - C:\Windows\SysWOW64\arp.exe
    arp -s 239.255.255.250 37-2d-68-a7-38-ee
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4192
- - C:\Windows\SysWOW64\arp.exe
    arp -s 255.255.255.255 38-c0-57-c8-3c-ba
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:2132
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 712
    3⤵
    - Program crash
    PID:320

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4992 -ip 4992
1⤵
PID:1544

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/4992-0-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/4992-2-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download