ef695c91c264c91733d7836ce9552430960631e8d745e7f95c96492962e40f74

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
31-12-2024 17:41

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General

Target

ef695c91c264c91733d7836ce9552430960631e8d745e7f95c96492962e40f74.dll
Size

80KB
MD5

605d917837db2d341cb4c021f821f97b
SHA1

7d6c1a9ef64152bee7dc77e9dd327fe884e818c7
SHA256

ef695c91c264c91733d7836ce9552430960631e8d745e7f95c96492962e40f74
SHA512

235800a8ae0f8a1ef7cd897175cd6d572aecac18a5dd84187ee7d8a6cec58eebad1509322bd078e0083373b3a368ba08aaae143d3d9ba6900bc038914b1dc32c
SSDEEP

1536:5POOhfbOjovgdVydUgoNrwBZXGDaZ1QIxrfItMgR7ZaO+fGxHZPEVo66:5dbwovEVyqgoZmZXWfIdQdRaefPrl

Score

6^/10

discovery upx

Malware Config

Signatures

Network Service Discovery 1 TTPs 9 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
1532	arp.exe
1612	arp.exe
1960	arp.exe
4088	arp.exe
2032	arp.exe
4856	arp.exe
4308	arp.exe
876	arp.exe
4084	arp.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1000-0-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/1000-2-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1356	1000	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	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

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1000	rundll32.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 1000	2872	rundll32.exe	82
PID 2872 wrote to memory of 1000	2872	rundll32.exe	82
PID 2872 wrote to memory of 1000	2872	rundll32.exe	82
PID 1000 wrote to memory of 2032	1000	rundll32.exe	84
PID 1000 wrote to memory of 2032	1000	rundll32.exe	84
PID 1000 wrote to memory of 2032	1000	rundll32.exe	84
PID 1000 wrote to memory of 1532	1000	rundll32.exe	87
PID 1000 wrote to memory of 1532	1000	rundll32.exe	87
PID 1000 wrote to memory of 1532	1000	rundll32.exe	87
PID 1000 wrote to memory of 4856	1000	rundll32.exe	88
PID 1000 wrote to memory of 4856	1000	rundll32.exe	88
PID 1000 wrote to memory of 4856	1000	rundll32.exe	88
PID 1000 wrote to memory of 1612	1000	rundll32.exe	89
PID 1000 wrote to memory of 1612	1000	rundll32.exe	89
PID 1000 wrote to memory of 1612	1000	rundll32.exe	89
PID 1000 wrote to memory of 1960	1000	rundll32.exe	90
PID 1000 wrote to memory of 1960	1000	rundll32.exe	90
PID 1000 wrote to memory of 1960	1000	rundll32.exe	90
PID 1000 wrote to memory of 4088	1000	rundll32.exe	91
PID 1000 wrote to memory of 4088	1000	rundll32.exe	91
PID 1000 wrote to memory of 4088	1000	rundll32.exe	91
PID 1000 wrote to memory of 4084	1000	rundll32.exe	92
PID 1000 wrote to memory of 4084	1000	rundll32.exe	92
PID 1000 wrote to memory of 4084	1000	rundll32.exe	92
PID 1000 wrote to memory of 876	1000	rundll32.exe	93
PID 1000 wrote to memory of 876	1000	rundll32.exe	93
PID 1000 wrote to memory of 876	1000	rundll32.exe	93
PID 1000 wrote to memory of 4308	1000	rundll32.exe	94
PID 1000 wrote to memory of 4308	1000	rundll32.exe	94
PID 1000 wrote to memory of 4308	1000	rundll32.exe	94

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef695c91c264c91733d7836ce9552430960631e8d745e7f95c96492962e40f74.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2872
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef695c91c264c91733d7836ce9552430960631e8d745e7f95c96492962e40f74.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1000
- - 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 d3-0b-f8-72-f2-11
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1532
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.255.255 8a-5c-e2-ba-16-a6
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4856
- - C:\Windows\SysWOW64\arp.exe
    arp -s 136.243.76.170 f1-db-b8-62-36-de
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1612
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.22 67-64-68-af-7a-5e
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1960
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.251 68-51-55-c8-84-26
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4088
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.252 9d-ef-53-34-1c-31
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4084
- - C:\Windows\SysWOW64\arp.exe
    arp -s 239.255.255.250 ed-00-03-8f-c8-bf
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:876
- - C:\Windows\SysWOW64\arp.exe
    arp -s 255.255.255.255 fd-08-32-96-49-ac
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4308
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1000 -s 704
    3⤵
    - Program crash
    PID:1356

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1000 -ip 1000
1⤵
PID:1152

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

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/1000-0-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

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memory/1000-2-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

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