7a77dec7a2a6cd2769e82ea0fd053881853c0f7612e605c41758952629740c19

Analysis

max time kernel
94s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-12-2024 00:13

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General

Target

7a77dec7a2a6cd2769e82ea0fd053881853c0f7612e605c41758952629740c19.dll
Size

80KB
MD5

b07174fc391992f4bd743300a0fe745b
SHA1

8abfbd6137e367e13bc1a48210188dfbb7d46604
SHA256

7a77dec7a2a6cd2769e82ea0fd053881853c0f7612e605c41758952629740c19
SHA512

028cfc33a66ea62cf9c3b7731146e97f7042f20224bed9a922ef97b5546d4a2f6f06a62f184da51c042d462fcaa5085de0defc3dea47e3efda6dd60e83d60ea7
SSDEEP

1536:5POOhfbOjovgdVydUgoNrwBZXGDaZ1QIxrfItMgR7ZaO+fGxHZPEMLS:5dbwovEVyqgoZmZXWfIdQdRaefPhLS

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
1432	arp.exe
1528	arp.exe
3580	arp.exe
532	arp.exe
1100	arp.exe
3516	arp.exe
4260	arp.exe
2772	arp.exe
2840	arp.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1860-0-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/1860-2-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4572	1860	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	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

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1860	rundll32.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 5008 wrote to memory of 1860	5008	rundll32.exe	82
PID 5008 wrote to memory of 1860	5008	rundll32.exe	82
PID 5008 wrote to memory of 1860	5008	rundll32.exe	82
PID 1860 wrote to memory of 4260	1860	rundll32.exe	83
PID 1860 wrote to memory of 4260	1860	rundll32.exe	83
PID 1860 wrote to memory of 4260	1860	rundll32.exe	83
PID 1860 wrote to memory of 3516	1860	rundll32.exe	87
PID 1860 wrote to memory of 3516	1860	rundll32.exe	87
PID 1860 wrote to memory of 3516	1860	rundll32.exe	87
PID 1860 wrote to memory of 3580	1860	rundll32.exe	88
PID 1860 wrote to memory of 3580	1860	rundll32.exe	88
PID 1860 wrote to memory of 3580	1860	rundll32.exe	88
PID 1860 wrote to memory of 1100	1860	rundll32.exe	89
PID 1860 wrote to memory of 1100	1860	rundll32.exe	89
PID 1860 wrote to memory of 1100	1860	rundll32.exe	89
PID 1860 wrote to memory of 2772	1860	rundll32.exe	90
PID 1860 wrote to memory of 2772	1860	rundll32.exe	90
PID 1860 wrote to memory of 2772	1860	rundll32.exe	90
PID 1860 wrote to memory of 532	1860	rundll32.exe	91
PID 1860 wrote to memory of 532	1860	rundll32.exe	91
PID 1860 wrote to memory of 532	1860	rundll32.exe	91
PID 1860 wrote to memory of 1528	1860	rundll32.exe	92
PID 1860 wrote to memory of 1528	1860	rundll32.exe	92
PID 1860 wrote to memory of 1528	1860	rundll32.exe	92
PID 1860 wrote to memory of 2840	1860	rundll32.exe	93
PID 1860 wrote to memory of 2840	1860	rundll32.exe	93
PID 1860 wrote to memory of 2840	1860	rundll32.exe	93
PID 1860 wrote to memory of 1432	1860	rundll32.exe	94
PID 1860 wrote to memory of 1432	1860	rundll32.exe	94
PID 1860 wrote to memory of 1432	1860	rundll32.exe	94

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7a77dec7a2a6cd2769e82ea0fd053881853c0f7612e605c41758952629740c19.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5008
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\7a77dec7a2a6cd2769e82ea0fd053881853c0f7612e605c41758952629740c19.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1860
- - C:\Windows\SysWOW64\arp.exe
    arp -a
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4260
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.0.1 95-5f-f4-fc-1a-b2
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:3516
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.255.255 15-16-85-04-57-3e
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:3580
- - C:\Windows\SysWOW64\arp.exe
    arp -s 37.27.61.183 d2-ec-de-bc-08-30
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1100
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.22 3a-9f-74-4e-ae-9f
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:2772
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.251 23-cd-8d-7c-de-4b
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:532
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.252 16-b7-7d-05-f3-8e
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1528
- - C:\Windows\SysWOW64\arp.exe
    arp -s 239.255.255.250 f4-84-67-97-91-03
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:2840
- - C:\Windows\SysWOW64\arp.exe
    arp -s 255.255.255.255 46-a7-ed-0b-bf-fe
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1432
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1860 -s 716
    3⤵
    - Program crash
    PID:4572

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1860 -ip 1860
1⤵
PID:8

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/1860-0-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

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memory/1860-2-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

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