742d4f2cf1cb7892a0a61314c08ad45a1948b7e65967b4392e53f00be5daa101

Analysis

max time kernel
93s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
25-01-2025 07:35

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General

Target

742d4f2cf1cb7892a0a61314c08ad45a1948b7e65967b4392e53f00be5daa101N.dll
Size

80KB
MD5

a850b1e7e2f65334b257fc12881fbec0
SHA1

2b3eed075f017e855088e845410b7faf2f2dbe9c
SHA256

742d4f2cf1cb7892a0a61314c08ad45a1948b7e65967b4392e53f00be5daa101
SHA512

92836e8fd3acca68f06e97a610fe8d87d2c86e011d87b518380dda97af09c57a849239421e746806071d47ccf2a81d712b490d1c908165a12202aef1ecac762a
SSDEEP

1536:5POOhfbOjovgdVydUgoNrwBZXGDaZ1QIxrfItMgR7ZaO+fGxHZPEn79uIei:5dbwovEVyqgoZmZXWfIdQdRaefP4RuY

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
1896	arp.exe
1532	arp.exe
1872	arp.exe
2604	arp.exe
4720	arp.exe
3944	arp.exe
1700	arp.exe
4512	arp.exe
4128	arp.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3964-0-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/3964-2-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1484	3964	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	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

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3964	rundll32.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 508 wrote to memory of 3964	508	rundll32.exe	82
PID 508 wrote to memory of 3964	508	rundll32.exe	82
PID 508 wrote to memory of 3964	508	rundll32.exe	82
PID 3964 wrote to memory of 1532	3964	rundll32.exe	83
PID 3964 wrote to memory of 1532	3964	rundll32.exe	83
PID 3964 wrote to memory of 1532	3964	rundll32.exe	83
PID 3964 wrote to memory of 4128	3964	rundll32.exe	87
PID 3964 wrote to memory of 4128	3964	rundll32.exe	87
PID 3964 wrote to memory of 4128	3964	rundll32.exe	87
PID 3964 wrote to memory of 4512	3964	rundll32.exe	88
PID 3964 wrote to memory of 4512	3964	rundll32.exe	88
PID 3964 wrote to memory of 4512	3964	rundll32.exe	88
PID 3964 wrote to memory of 1896	3964	rundll32.exe	89
PID 3964 wrote to memory of 1896	3964	rundll32.exe	89
PID 3964 wrote to memory of 1896	3964	rundll32.exe	89
PID 3964 wrote to memory of 4720	3964	rundll32.exe	90
PID 3964 wrote to memory of 4720	3964	rundll32.exe	90
PID 3964 wrote to memory of 4720	3964	rundll32.exe	90
PID 3964 wrote to memory of 2604	3964	rundll32.exe	91
PID 3964 wrote to memory of 2604	3964	rundll32.exe	91
PID 3964 wrote to memory of 2604	3964	rundll32.exe	91
PID 3964 wrote to memory of 1872	3964	rundll32.exe	92
PID 3964 wrote to memory of 1872	3964	rundll32.exe	92
PID 3964 wrote to memory of 1872	3964	rundll32.exe	92
PID 3964 wrote to memory of 1700	3964	rundll32.exe	93
PID 3964 wrote to memory of 1700	3964	rundll32.exe	93
PID 3964 wrote to memory of 1700	3964	rundll32.exe	93
PID 3964 wrote to memory of 3944	3964	rundll32.exe	94
PID 3964 wrote to memory of 3944	3964	rundll32.exe	94
PID 3964 wrote to memory of 3944	3964	rundll32.exe	94

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\742d4f2cf1cb7892a0a61314c08ad45a1948b7e65967b4392e53f00be5daa101N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:508
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\742d4f2cf1cb7892a0a61314c08ad45a1948b7e65967b4392e53f00be5daa101N.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3964
- - C:\Windows\SysWOW64\arp.exe
    arp -a
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1532
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.0.1 64-fb-d7-92-b8-68
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4128
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.255.255 85-6b-93-04-d3-9b
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4512
- - C:\Windows\SysWOW64\arp.exe
    arp -s 136.243.69.123 5a-ef-4b-e9-14-c4
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1896
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.22 5f-eb-74-ae-5e-08
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4720
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.251 db-c8-33-4c-40-ea
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:2604
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.252 d9-71-5b-70-11-1e
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1872
- - C:\Windows\SysWOW64\arp.exe
    arp -s 239.255.255.250 29-2c-a8-97-c1-13
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1700
- - C:\Windows\SysWOW64\arp.exe
    arp -s 255.255.255.255 2e-7b-44-06-a9-85
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:3944
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3964 -s 716
    3⤵
    - Program crash
    PID:1484

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3964 -ip 3964
1⤵
PID:4232

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/3964-0-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/3964-2-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download