ef789537f67e662d37877a77f804e0d1cdd9fdd062650b0d4f2397726a693f9e

Analysis

max time kernel
94s
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
19-12-2024 10:39

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General

Target

ef789537f67e662d37877a77f804e0d1cdd9fdd062650b0d4f2397726a693f9eN.dll
Size

80KB
MD5

7fabffb001494d6b28bc097bafed3550
SHA1

6402111c788bcf6e04fd40b693b05a42a038916f
SHA256

ef789537f67e662d37877a77f804e0d1cdd9fdd062650b0d4f2397726a693f9e
SHA512

9a759caad9c8dbe54c5c2af7ab08de0b1287cc6fee704613511669bddc1049f6b648f41710d23bb6dcbeebad417fcdae83cb133fbcd0d04d128ef611f7c972dd
SSDEEP

1536:5POOhfbOjovgdVydUgoNrwBZXGDaZ1QIxrfItMgR7ZaO+fGxHZPEBae:5dbwovEVyqgoZmZXWfIdQdRaefPAae

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
4212	arp.exe
1880	arp.exe
1376	arp.exe
2084	arp.exe
2656	arp.exe
3796	arp.exe
4936	arp.exe
1396	arp.exe
2512	arp.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1572-0-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/1572-2-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1068	1572	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	1572	rundll32.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1476 wrote to memory of 1572	1476	rundll32.exe	83
PID 1476 wrote to memory of 1572	1476	rundll32.exe	83
PID 1476 wrote to memory of 1572	1476	rundll32.exe	83
PID 1572 wrote to memory of 1880	1572	rundll32.exe	85
PID 1572 wrote to memory of 1880	1572	rundll32.exe	85
PID 1572 wrote to memory of 1880	1572	rundll32.exe	85
PID 1572 wrote to memory of 4212	1572	rundll32.exe	88
PID 1572 wrote to memory of 4212	1572	rundll32.exe	88
PID 1572 wrote to memory of 4212	1572	rundll32.exe	88
PID 1572 wrote to memory of 2656	1572	rundll32.exe	89
PID 1572 wrote to memory of 2656	1572	rundll32.exe	89
PID 1572 wrote to memory of 2656	1572	rundll32.exe	89
PID 1572 wrote to memory of 2084	1572	rundll32.exe	90
PID 1572 wrote to memory of 2084	1572	rundll32.exe	90
PID 1572 wrote to memory of 2084	1572	rundll32.exe	90
PID 1572 wrote to memory of 2512	1572	rundll32.exe	91
PID 1572 wrote to memory of 2512	1572	rundll32.exe	91
PID 1572 wrote to memory of 2512	1572	rundll32.exe	91
PID 1572 wrote to memory of 1376	1572	rundll32.exe	92
PID 1572 wrote to memory of 1376	1572	rundll32.exe	92
PID 1572 wrote to memory of 1376	1572	rundll32.exe	92
PID 1572 wrote to memory of 1396	1572	rundll32.exe	93
PID 1572 wrote to memory of 1396	1572	rundll32.exe	93
PID 1572 wrote to memory of 1396	1572	rundll32.exe	93
PID 1572 wrote to memory of 4936	1572	rundll32.exe	94
PID 1572 wrote to memory of 4936	1572	rundll32.exe	94
PID 1572 wrote to memory of 4936	1572	rundll32.exe	94
PID 1572 wrote to memory of 3796	1572	rundll32.exe	95
PID 1572 wrote to memory of 3796	1572	rundll32.exe	95
PID 1572 wrote to memory of 3796	1572	rundll32.exe	95

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef789537f67e662d37877a77f804e0d1cdd9fdd062650b0d4f2397726a693f9eN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1476
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef789537f67e662d37877a77f804e0d1cdd9fdd062650b0d4f2397726a693f9eN.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1572
- - C:\Windows\SysWOW64\arp.exe
    arp -a
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1880
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.0.1 16-40-1f-b2-c0-a8
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4212
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.255.255 e0-9c-e3-68-f4-98
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:2656
- - C:\Windows\SysWOW64\arp.exe
    arp -s 37.27.61.181 d5-da-f1-7f-6e-fa
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:2084
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.22 e8-7f-99-ce-ea-70
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:2512
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.251 eb-22-45-54-5d-90
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1376
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.252 cf-d5-78-62-bd-21
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1396
- - C:\Windows\SysWOW64\arp.exe
    arp -s 239.255.255.250 d6-e9-66-93-29-de
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4936
- - C:\Windows\SysWOW64\arp.exe
    arp -s 255.255.255.255 70-26-0d-ef-b9-62
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:3796
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1572 -s 704
    3⤵
    - Program crash
    PID:1068

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 1572 -ip 1572
1⤵
PID:4512

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/1572-0-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/1572-2-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download