f91ec0b7844995cf71c92ac16afafd45cca77bc74c4394e7f5119a9b7f0b1532

Analysis

max time kernel
105s
max time network
16s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
16/01/2025, 07:11

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

f91ec0b7844995cf71c92ac16afafd45cca77bc74c4394e7f5119a9b7f0b1532N.dll
Size

504KB
MD5

a750fe49a05a90b4daa897a0d65a70a0
SHA1

3df4421793e529abf8f0402f56a3098ff8fe0b73
SHA256

f91ec0b7844995cf71c92ac16afafd45cca77bc74c4394e7f5119a9b7f0b1532
SHA512

ba64d42a5492e15a470d6ab55dd693276ca9b5e5a29f3d1871737980d7614bde256f91a3704b32a8df4916714e94ba12737c4982f52613dce7af2d51beee0aab
SSDEEP

12288:/h8fZLyb9PzVMBC/HVMOp4PkxHLCYwZckMQMNM3I9zjz:/8F+Pzr/Hfp4MIYwZckMQmMsXz

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1736	rundll32mgr.exe

Loads dropped DLL 9 IoCs

pid	Process
2064	rundll32.exe
2064	rundll32.exe
2420	WerFault.exe
2420	WerFault.exe
2420	WerFault.exe
2420	WerFault.exe
2420	WerFault.exe
2420	WerFault.exe
2420	WerFault.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2420	1736	WerFault.exe	32

System Location Discovery: System Language Discovery 1 TTPs 2 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	rundll32mgr.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2336 wrote to memory of 2064	2336	rundll32.exe	31
PID 2336 wrote to memory of 2064	2336	rundll32.exe	31
PID 2336 wrote to memory of 2064	2336	rundll32.exe	31
PID 2336 wrote to memory of 2064	2336	rundll32.exe	31
PID 2336 wrote to memory of 2064	2336	rundll32.exe	31
PID 2336 wrote to memory of 2064	2336	rundll32.exe	31
PID 2336 wrote to memory of 2064	2336	rundll32.exe	31
PID 2064 wrote to memory of 1736	2064	rundll32.exe	32
PID 2064 wrote to memory of 1736	2064	rundll32.exe	32
PID 2064 wrote to memory of 1736	2064	rundll32.exe	32
PID 2064 wrote to memory of 1736	2064	rundll32.exe	32
PID 1736 wrote to memory of 2420	1736	rundll32mgr.exe	33
PID 1736 wrote to memory of 2420	1736	rundll32mgr.exe	33
PID 1736 wrote to memory of 2420	1736	rundll32mgr.exe	33
PID 1736 wrote to memory of 2420	1736	rundll32mgr.exe	33

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f91ec0b7844995cf71c92ac16afafd45cca77bc74c4394e7f5119a9b7f0b1532N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2336
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\f91ec0b7844995cf71c92ac16afafd45cca77bc74c4394e7f5119a9b7f0b1532N.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2064
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1736
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1736 -s 100
      4⤵
      Loads dropped DLL
      Program crash
      PID:2420

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
69KB

MD5
03a048104272c7aabc167e893cc6d3cd

SHA1
304fdf6a45f2e4e422365f836ae526af3cd72af6

SHA256
cc3aa2d0788746f8e848b6e59142502ca61afe72c380c6f44b353064567b33d5

SHA512
0989ecced26ca343f2924b6407299886fe47b59e00ac9e9f51c0e4145d06f64d6aa0db1c2e28a0fcba343609aef39682916a809b786139c45bcc4adb28ec5df1

Download Submit
memory/2064-0-0x0000000010000000-0x0000000010083000-memory.dmp

Filesize
524KB

Download
memory/2064-8-0x0000000010000000-0x0000000010083000-memory.dmp

Filesize
524KB

Download
memory/2064-9-0x0000000010000000-0x0000000010083000-memory.dmp

Filesize
524KB

Download