a3da8aaaf439be346fdb26bb918efaedef2955be88bd4f53860c2a4812fbb5d1

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27-12-2024 01:16

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General

Target

a3da8aaaf439be346fdb26bb918efaedef2955be88bd4f53860c2a4812fbb5d1.dll
Size

80KB
MD5

bf937b141d9b925050d8dd6c85fbc3a3
SHA1

531cf97ebbe39fd2dcfc6d6090fd9fbb771b3f84
SHA256

a3da8aaaf439be346fdb26bb918efaedef2955be88bd4f53860c2a4812fbb5d1
SHA512

f4bd0793fa8b2d1e60403fd7b973bce457c6e0b87c472e5423fccb22d0c45e886915db38aab88cc42c02a58951efa36e37b0c378639af5b6ac974dd39a449d5a
SSDEEP

1536:5POOhfbOjovgdVydUgoNrwBZXGDaZ1QIxrfItMgR7ZaO+fGxHZPEg6ZV:5dbwovEVyqgoZmZXWfIdQdRaefP2

Score

6^/10

discovery upx

Malware Config

Signatures

Network Service Discovery 1 TTPs 4 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
596	arp.exe
2232	arp.exe
3016	arp.exe
576	arp.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2116-2-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2116-1-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2116-4-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
996	2116	WerFault.exe	30

System Location Discovery: System Language Discovery 1 TTPs 4 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

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2116	rundll32.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3008 wrote to memory of 2116	3008	rundll32.exe	30
PID 3008 wrote to memory of 2116	3008	rundll32.exe	30
PID 3008 wrote to memory of 2116	3008	rundll32.exe	30
PID 3008 wrote to memory of 2116	3008	rundll32.exe	30
PID 3008 wrote to memory of 2116	3008	rundll32.exe	30
PID 3008 wrote to memory of 2116	3008	rundll32.exe	30
PID 3008 wrote to memory of 2116	3008	rundll32.exe	30
PID 2116 wrote to memory of 996	2116	rundll32.exe	31
PID 2116 wrote to memory of 996	2116	rundll32.exe	31
PID 2116 wrote to memory of 996	2116	rundll32.exe	31
PID 2116 wrote to memory of 996	2116	rundll32.exe	31
PID 2116 wrote to memory of 596	2116	rundll32.exe	32
PID 2116 wrote to memory of 596	2116	rundll32.exe	32
PID 2116 wrote to memory of 596	2116	rundll32.exe	32
PID 2116 wrote to memory of 596	2116	rundll32.exe	32
PID 2116 wrote to memory of 2232	2116	rundll32.exe	35
PID 2116 wrote to memory of 2232	2116	rundll32.exe	35
PID 2116 wrote to memory of 2232	2116	rundll32.exe	35
PID 2116 wrote to memory of 2232	2116	rundll32.exe	35
PID 2116 wrote to memory of 3016	2116	rundll32.exe	36
PID 2116 wrote to memory of 3016	2116	rundll32.exe	36
PID 2116 wrote to memory of 3016	2116	rundll32.exe	36
PID 2116 wrote to memory of 3016	2116	rundll32.exe	36

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a3da8aaaf439be346fdb26bb918efaedef2955be88bd4f53860c2a4812fbb5d1.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3008
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a3da8aaaf439be346fdb26bb918efaedef2955be88bd4f53860c2a4812fbb5d1.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2116
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2116 -s 276
    3⤵
    - Program crash
    PID:996
- - C:\Windows\SysWOW64\arp.exe
    arp -a
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:596
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.0.1 f3-53-2d-53-5c-05
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:2232
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.255.255 cc-52-03-32-48-4b
    3⤵
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    PID:3016
- - C:\Windows\SysWOW64\arp.exe
    arp -s 37.27.61.183 9b-0b-27-1f-3f-17
    3⤵
    - Network Service Discovery
    PID:576

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/2116-2-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2116-1-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2116-0-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2116-4-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download