75c77a6605110682bca7169b9af69e01781bda774f3ad11e785d0b8bee9aea76

Analysis

max time kernel
93s
max time network
148s
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 22:53

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General

Target

75c77a6605110682bca7169b9af69e01781bda774f3ad11e785d0b8bee9aea76.dll
Size

80KB
MD5

231338e073ad7739914ed682a4cd5978
SHA1

022a52cbd32c7763ab0e7158a2401d9a10562d19
SHA256

75c77a6605110682bca7169b9af69e01781bda774f3ad11e785d0b8bee9aea76
SHA512

e1cb226a4a7253c2fef5ed3c9bd4d28951a4e79a492f2832dffeb80aceb2bcc89e34e0a911970c559a6aec7e3b972aa76ac6beab10eac81f7ee00b450907a8b3
SSDEEP

1536:5POOhfbOjovgdVydUgoNrwBZXGDaZ1QIxrfItMgR7ZaO+fGxHZPEPejP:5dbwovEVyqgoZmZXWfIdQdRaefPr

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
2172	arp.exe
3012	arp.exe
4332	arp.exe
4444	arp.exe
1996	arp.exe
1904	arp.exe
5084	arp.exe
1788	arp.exe
3316	arp.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3388-0-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/3388-1-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1768	3388	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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3388	rundll32.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1928 wrote to memory of 3388	1928	rundll32.exe	83
PID 1928 wrote to memory of 3388	1928	rundll32.exe	83
PID 1928 wrote to memory of 3388	1928	rundll32.exe	83
PID 3388 wrote to memory of 1904	3388	rundll32.exe	85
PID 3388 wrote to memory of 1904	3388	rundll32.exe	85
PID 3388 wrote to memory of 1904	3388	rundll32.exe	85
PID 3388 wrote to memory of 5084	3388	rundll32.exe	88
PID 3388 wrote to memory of 5084	3388	rundll32.exe	88
PID 3388 wrote to memory of 5084	3388	rundll32.exe	88
PID 3388 wrote to memory of 4444	3388	rundll32.exe	89
PID 3388 wrote to memory of 4444	3388	rundll32.exe	89
PID 3388 wrote to memory of 4444	3388	rundll32.exe	89
PID 3388 wrote to memory of 1996	3388	rundll32.exe	90
PID 3388 wrote to memory of 1996	3388	rundll32.exe	90
PID 3388 wrote to memory of 1996	3388	rundll32.exe	90
PID 3388 wrote to memory of 2172	3388	rundll32.exe	91
PID 3388 wrote to memory of 2172	3388	rundll32.exe	91
PID 3388 wrote to memory of 2172	3388	rundll32.exe	91
PID 3388 wrote to memory of 1788	3388	rundll32.exe	92
PID 3388 wrote to memory of 1788	3388	rundll32.exe	92
PID 3388 wrote to memory of 1788	3388	rundll32.exe	92
PID 3388 wrote to memory of 3012	3388	rundll32.exe	93
PID 3388 wrote to memory of 3012	3388	rundll32.exe	93
PID 3388 wrote to memory of 3012	3388	rundll32.exe	93
PID 3388 wrote to memory of 3316	3388	rundll32.exe	94
PID 3388 wrote to memory of 3316	3388	rundll32.exe	94
PID 3388 wrote to memory of 3316	3388	rundll32.exe	94
PID 3388 wrote to memory of 4332	3388	rundll32.exe	95
PID 3388 wrote to memory of 4332	3388	rundll32.exe	95
PID 3388 wrote to memory of 4332	3388	rundll32.exe	95

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\75c77a6605110682bca7169b9af69e01781bda774f3ad11e785d0b8bee9aea76.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1928
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\75c77a6605110682bca7169b9af69e01781bda774f3ad11e785d0b8bee9aea76.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3388
- - C:\Windows\SysWOW64\arp.exe
    arp -a
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1904
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.0.1 8d-d3-18-41-d8-4d
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:5084
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.255.255 4f-18-51-81-40-8b
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4444
- - C:\Windows\SysWOW64\arp.exe
    arp -s 136.243.76.21 d8-22-62-8d-5d-73
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1996
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.22 ff-78-4c-e5-f7-c6
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:2172
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.251 a3-3a-35-14-57-b7
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1788
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.252 b0-9e-17-fc-ad-ee
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:3012
- - C:\Windows\SysWOW64\arp.exe
    arp -s 239.255.255.250 4a-62-c7-a6-4f-f9
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:3316
- - C:\Windows\SysWOW64\arp.exe
    arp -s 255.255.255.255 eb-ed-63-9d-16-56
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:4332
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3388 -s 704
    3⤵
    - Program crash
    PID:1768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3388 -ip 3388
1⤵
PID:3088

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/3388-0-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

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memory/3388-1-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

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