a75835a6dc893740b6dc0eea624727181e39265f3221148c1543e8aabc6e5633

Analysis

max time kernel
119s
max time network
76s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
03-01-2025 12:55

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General

Target

a75835a6dc893740b6dc0eea624727181e39265f3221148c1543e8aabc6e5633N.dll
Size

80KB
MD5

85c11b1f4a4d1292f48b119c63b56a90
SHA1

3fdbeb5acac2246055fad8a45e1df7ff05e3480c
SHA256

a75835a6dc893740b6dc0eea624727181e39265f3221148c1543e8aabc6e5633
SHA512

15e4b90ce117f6640fbadb38b01872cc91a1bd4b55241d6cf9ae88a5591ad272d1e61bdfa2f7603b9ef5348b017683d72be3dd253193e1c28cd0b85f149ee765
SSDEEP

1536:5POOhfbOjovgdVydUgoNrwBZXGDaZ1QIxrfItMgR7ZaO+fGxHZPEI9z:5dbwovEVyqgoZmZXWfIdQdRaefP1z

Score

8^/10

discovery upx

Malware Config

Signatures

Blocklisted process makes network request 3 IoCs

flow	pid	Process
5	2128	rundll32.exe
8	2128	rundll32.exe
9	2128	rundll32.exe

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\e:	rundll32.exe

Network Service Discovery 1 TTPs 9 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
2192	arp.exe
2784	arp.exe
1804	arp.exe
2788	arp.exe
3012	arp.exe
1632	arp.exe
2648	arp.exe
2620	arp.exe
1956	arp.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2128-2-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2128-1-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2128-5-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2128-6-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2128-7-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2128-13-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2128-15-0x0000000010000000-0x0000000010033000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 11 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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2128	rundll32.exe
2128	rundll32.exe
2128	rundll32.exe

Suspicious behavior: LoadsDriver 2 IoCs

pid	Process
472	Process not Found
472	Process not Found

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2128	rundll32.exe

Suspicious use of WriteProcessMemory 47 IoCs

description	pid	Process	procid_target
PID 1812 wrote to memory of 2128	1812	rundll32.exe	30
PID 1812 wrote to memory of 2128	1812	rundll32.exe	30
PID 1812 wrote to memory of 2128	1812	rundll32.exe	30
PID 1812 wrote to memory of 2128	1812	rundll32.exe	30
PID 1812 wrote to memory of 2128	1812	rundll32.exe	30
PID 1812 wrote to memory of 2128	1812	rundll32.exe	30
PID 1812 wrote to memory of 2128	1812	rundll32.exe	30
PID 2128 wrote to memory of 2620	2128	rundll32.exe	31
PID 2128 wrote to memory of 2620	2128	rundll32.exe	31
PID 2128 wrote to memory of 2620	2128	rundll32.exe	31
PID 2128 wrote to memory of 2620	2128	rundll32.exe	31
PID 2128 wrote to memory of 1804	2128	rundll32.exe	33
PID 2128 wrote to memory of 1804	2128	rundll32.exe	33
PID 2128 wrote to memory of 1804	2128	rundll32.exe	33
PID 2128 wrote to memory of 1804	2128	rundll32.exe	33
PID 2128 wrote to memory of 1956	2128	rundll32.exe	34
PID 2128 wrote to memory of 1956	2128	rundll32.exe	34
PID 2128 wrote to memory of 1956	2128	rundll32.exe	34
PID 2128 wrote to memory of 1956	2128	rundll32.exe	34
PID 2128 wrote to memory of 3012	2128	rundll32.exe	36
PID 2128 wrote to memory of 3012	2128	rundll32.exe	36
PID 2128 wrote to memory of 3012	2128	rundll32.exe	36
PID 2128 wrote to memory of 3012	2128	rundll32.exe	36
PID 2128 wrote to memory of 1632	2128	rundll32.exe	37
PID 2128 wrote to memory of 1632	2128	rundll32.exe	37
PID 2128 wrote to memory of 1632	2128	rundll32.exe	37
PID 2128 wrote to memory of 1632	2128	rundll32.exe	37
PID 2128 wrote to memory of 2648	2128	rundll32.exe	40
PID 2128 wrote to memory of 2648	2128	rundll32.exe	40
PID 2128 wrote to memory of 2648	2128	rundll32.exe	40
PID 2128 wrote to memory of 2648	2128	rundll32.exe	40
PID 2128 wrote to memory of 2788	2128	rundll32.exe	41
PID 2128 wrote to memory of 2788	2128	rundll32.exe	41
PID 2128 wrote to memory of 2788	2128	rundll32.exe	41
PID 2128 wrote to memory of 2788	2128	rundll32.exe	41
PID 2128 wrote to memory of 2192	2128	rundll32.exe	42
PID 2128 wrote to memory of 2192	2128	rundll32.exe	42
PID 2128 wrote to memory of 2192	2128	rundll32.exe	42
PID 2128 wrote to memory of 2192	2128	rundll32.exe	42
PID 2128 wrote to memory of 2784	2128	rundll32.exe	44
PID 2128 wrote to memory of 2784	2128	rundll32.exe	44
PID 2128 wrote to memory of 2784	2128	rundll32.exe	44
PID 2128 wrote to memory of 2784	2128	rundll32.exe	44
PID 2128 wrote to memory of 2756	2128	rundll32.exe	50
PID 2128 wrote to memory of 2756	2128	rundll32.exe	50
PID 2128 wrote to memory of 2756	2128	rundll32.exe	50
PID 2128 wrote to memory of 2756	2128	rundll32.exe	50

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a75835a6dc893740b6dc0eea624727181e39265f3221148c1543e8aabc6e5633N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1812
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a75835a6dc893740b6dc0eea624727181e39265f3221148c1543e8aabc6e5633N.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Enumerates connected drives
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2128
- - C:\Windows\SysWOW64\arp.exe
    arp -a
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:2620
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.0.1 e1-7e-3e-92-31-40
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1804
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.255.255 6c-27-49-9f-b2-81
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1956
- - C:\Windows\SysWOW64\arp.exe
    arp -s 37.27.61.184 a9-d3-3e-2d-8a-b3
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:3012
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.22 90-a2-ec-57-e6-99
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:1632
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.251 77-19-9c-c2-87-49
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:2648
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.252 b3-c3-af-91-a2-0e
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:2788
- - C:\Windows\SysWOW64\arp.exe
    arp -s 239.255.255.250 00-e3-e2-21-72-0c
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:2192
- - C:\Windows\SysWOW64\arp.exe
    arp -s 255.255.255.255 b3-90-74-29-03-7c
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:2784
- - C:\Windows\SysWOW64\arp.exe
    arp -d
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2756

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

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/2128-2-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2128-1-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2128-0-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2128-5-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2128-6-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2128-7-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2128-13-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2128-15-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download