ff77b09a521f7dcce6d1ac4ce7618fd4c17d3d4a4580407a39fe04321315d6c2

Analysis

max time kernel
93s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19-12-2024 10:38

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General

Target

ff77b09a521f7dcce6d1ac4ce7618fd4c17d3d4a4580407a39fe04321315d6c2N.dll
Size

80KB
MD5

ad04d20d5b4ebb9de75cf3b594257e50
SHA1

6dab5f3c43f763988dae111af3bf32f3a1a404a8
SHA256

ff77b09a521f7dcce6d1ac4ce7618fd4c17d3d4a4580407a39fe04321315d6c2
SHA512

84a2dfb53163cb32d936f701b5b936fe7f68e420ad8436f6b5ab6b3877ede6c99777c74ce8fda5e9b853d35a31c821c991427e3a7d3be886df93e40a0eb022ec
SSDEEP

1536:5POOhfbOjovgdVydUgoNrwBZXGDaZ1QIxrfItMgR7ZaO+fGxHZPEqQWMInY:5dbwovEVyqgoZmZXWfIdQdRaefPJnY

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
2728	arp.exe
1808	arp.exe
1556	arp.exe
4652	arp.exe
1492	arp.exe
5068	arp.exe
4212	arp.exe
492	arp.exe
3852	arp.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4940-0-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/4940-1-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1904	4940	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	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	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

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4940	rundll32.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3588 wrote to memory of 4940	3588	rundll32.exe	84
PID 3588 wrote to memory of 4940	3588	rundll32.exe	84
PID 3588 wrote to memory of 4940	3588	rundll32.exe	84
PID 4940 wrote to memory of 1808	4940	rundll32.exe	85
PID 4940 wrote to memory of 1808	4940	rundll32.exe	85
PID 4940 wrote to memory of 1808	4940	rundll32.exe	85
PID 4940 wrote to memory of 3852	4940	rundll32.exe	89
PID 4940 wrote to memory of 3852	4940	rundll32.exe	89
PID 4940 wrote to memory of 3852	4940	rundll32.exe	89
PID 4940 wrote to memory of 492	4940	rundll32.exe	90
PID 4940 wrote to memory of 492	4940	rundll32.exe	90
PID 4940 wrote to memory of 492	4940	rundll32.exe	90
PID 4940 wrote to memory of 2728	4940	rundll32.exe	91
PID 4940 wrote to memory of 2728	4940	rundll32.exe	91
PID 4940 wrote to memory of 2728	4940	rundll32.exe	91
PID 4940 wrote to memory of 1556	4940	rundll32.exe	92
PID 4940 wrote to memory of 1556	4940	rundll32.exe	92
PID 4940 wrote to memory of 1556	4940	rundll32.exe	92
PID 4940 wrote to memory of 4212	4940	rundll32.exe	93
PID 4940 wrote to memory of 4212	4940	rundll32.exe	93
PID 4940 wrote to memory of 4212	4940	rundll32.exe	93
PID 4940 wrote to memory of 5068	4940	rundll32.exe	94
PID 4940 wrote to memory of 5068	4940	rundll32.exe	94
PID 4940 wrote to memory of 5068	4940	rundll32.exe	94
PID 4940 wrote to memory of 1492	4940	rundll32.exe	95
PID 4940 wrote to memory of 1492	4940	rundll32.exe	95
PID 4940 wrote to memory of 1492	4940	rundll32.exe	95
PID 4940 wrote to memory of 4652	4940	rundll32.exe	96
PID 4940 wrote to memory of 4652	4940	rundll32.exe	96
PID 4940 wrote to memory of 4652	4940	rundll32.exe	96

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ff77b09a521f7dcce6d1ac4ce7618fd4c17d3d4a4580407a39fe04321315d6c2N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3588
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ff77b09a521f7dcce6d1ac4ce7618fd4c17d3d4a4580407a39fe04321315d6c2N.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4940
- - C:\Windows\SysWOW64\arp.exe
    arp -a
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1808
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.0.1 3d-47-ce-d8-f6-71
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:3852
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.255.255 ff-fa-3e-4c-0b-ef
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:492
- - C:\Windows\SysWOW64\arp.exe
    arp -s 37.27.61.183 5d-55-81-ca-e5-77
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:2728
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.22 81-0e-1b-5a-c6-6a
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1556
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.251 76-e6-4f-46-1f-75
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4212
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.252 1d-8c-04-54-53-77
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:5068
- - C:\Windows\SysWOW64\arp.exe
    arp -s 239.255.255.250 c0-e3-d1-e9-80-1a
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1492
- - C:\Windows\SysWOW64\arp.exe
    arp -s 255.255.255.255 ea-e8-37-76-85-a0
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4652
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4940 -s 700
    3⤵
    - Program crash
    PID:1904

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4940 -ip 4940
1⤵
PID:4608

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

Replay Monitor

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Downloads

memory/4940-0-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/4940-1-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download