f055a8d695c7137f08ccd1926039789599501e59b3b81541e0d21cbb05e1cd2a

Analysis

max time kernel
14s
max time network
18s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
18-12-2024 22:08

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General

Target

f055a8d695c7137f08ccd1926039789599501e59b3b81541e0d21cbb05e1cd2a.dll
Size

444KB
MD5

e33faa1aa23b5541bcad705df1843455
SHA1

07675500d51123843466b064f3b9df9beb168177
SHA256

f055a8d695c7137f08ccd1926039789599501e59b3b81541e0d21cbb05e1cd2a
SHA512

4c4479b0713c3676fa1e65ccfa6c01e3c3924ff4b76a982823df5f419434dd86047825194ee9b73230d24823457a27387d93025c3999d112f57fa8c7754acaf3
SSDEEP

12288:iehnaNPpSVZmNxRCwnwm3W3OHIIf5amBUFCWii:ieh0PpS6NxNnwYeOHX1UgHi

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
952	rundll32mgr.exe

Loads dropped DLL 9 IoCs

pid	Process
2604	rundll32.exe
2604	rundll32.exe
1952	WerFault.exe
1952	WerFault.exe
1952	WerFault.exe
1952	WerFault.exe
1952	WerFault.exe
1952	WerFault.exe
1952	WerFault.exe

Drops file in System32 directory 1 IoCs

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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1668	2604	WerFault.exe	29
1952	952	WerFault.exe	30

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 19 IoCs

description	pid	Process	procid_target
PID 2344 wrote to memory of 2604	2344	rundll32.exe	29
PID 2344 wrote to memory of 2604	2344	rundll32.exe	29
PID 2344 wrote to memory of 2604	2344	rundll32.exe	29
PID 2344 wrote to memory of 2604	2344	rundll32.exe	29
PID 2344 wrote to memory of 2604	2344	rundll32.exe	29
PID 2344 wrote to memory of 2604	2344	rundll32.exe	29
PID 2344 wrote to memory of 2604	2344	rundll32.exe	29
PID 2604 wrote to memory of 952	2604	rundll32.exe	30
PID 2604 wrote to memory of 952	2604	rundll32.exe	30
PID 2604 wrote to memory of 952	2604	rundll32.exe	30
PID 2604 wrote to memory of 952	2604	rundll32.exe	30
PID 2604 wrote to memory of 1668	2604	rundll32.exe	31
PID 2604 wrote to memory of 1668	2604	rundll32.exe	31
PID 2604 wrote to memory of 1668	2604	rundll32.exe	31
PID 2604 wrote to memory of 1668	2604	rundll32.exe	31
PID 952 wrote to memory of 1952	952	rundll32mgr.exe	32
PID 952 wrote to memory of 1952	952	rundll32mgr.exe	32
PID 952 wrote to memory of 1952	952	rundll32mgr.exe	32
PID 952 wrote to memory of 1952	952	rundll32mgr.exe	32

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f055a8d695c7137f08ccd1926039789599501e59b3b81541e0d21cbb05e1cd2a.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2344
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\f055a8d695c7137f08ccd1926039789599501e59b3b81541e0d21cbb05e1cd2a.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2604
- - 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:952
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 952 -s 100
      4⤵
      Loads dropped DLL
      Program crash
      PID:1952
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2604 -s 228
    3⤵
    - Program crash
    PID:1668

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

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Downloads

\Windows\SysWOW64\rundll32mgr.exe

Filesize
60KB

MD5
94f2f6ffbba8e7644668b51b39983916

SHA1
63357bbdf90101969117983dbc0d4ed0e713c4d7

SHA256
ede7603855cb37082c241c720a6650988c684eb3bcb263e5dd7b457458940fed

SHA512
d04430ceac70c6fa71d07d9ee82ac2bb5e6c0641d5c9e7e5a3ed39d342e8b198f367676516a55f0653e0b88635a027b9ad220e223145b8be8df281bb6faf7156

Download Submit
memory/2604-1-0x0000000010000000-0x0000000010071000-memory.dmp

Filesize
452KB

Download
memory/2604-16-0x0000000010000000-0x0000000010071000-memory.dmp

Filesize
452KB

Download