7b97b9673170dce184556a790a8bf4d0ae847fa757f3564edd0540a187c31621

Analysis

max time kernel
92s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
25-12-2024 16:08

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General

Target

7b97b9673170dce184556a790a8bf4d0ae847fa757f3564edd0540a187c31621.dll
Size

380KB
MD5

2e105a3d4ac1f34442ac38c4aed63aa5
SHA1

5b6d9102642d2971e74850c79f1aece482d112e0
SHA256

7b97b9673170dce184556a790a8bf4d0ae847fa757f3564edd0540a187c31621
SHA512

966af334e95e70e610ffca72d4b651fc2da78716aa502f793482b3ab75fd47a37918fdfd1ef64b73213fae00daf1112f96e4ec8e74a1e87ad812b8a443816685
SSDEEP

6144:/4y8gOl2lWXFYTVNtfU3bnKWWJZfEJ8xln5+H:gy8gyQNe2J6Js58

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1648	rundll32mgr.exe
2368	rundll32mgrmgr.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32mgrmgr.exe	rundll32mgr.exe
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2864	1648	WerFault.exe	84
4636	2368	WerFault.exe	85

System Location Discovery: System Language Discovery 1 TTPs 3 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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32mgrmgr.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3764 wrote to memory of 4156	3764	rundll32.exe	83
PID 3764 wrote to memory of 4156	3764	rundll32.exe	83
PID 3764 wrote to memory of 4156	3764	rundll32.exe	83
PID 4156 wrote to memory of 1648	4156	rundll32.exe	84
PID 4156 wrote to memory of 1648	4156	rundll32.exe	84
PID 4156 wrote to memory of 1648	4156	rundll32.exe	84
PID 1648 wrote to memory of 2368	1648	rundll32mgr.exe	85
PID 1648 wrote to memory of 2368	1648	rundll32mgr.exe	85
PID 1648 wrote to memory of 2368	1648	rundll32mgr.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7b97b9673170dce184556a790a8bf4d0ae847fa757f3564edd0540a187c31621.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3764
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\7b97b9673170dce184556a790a8bf4d0ae847fa757f3564edd0540a187c31621.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4156
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1648
  - - C:\Windows\SysWOW64\rundll32mgrmgr.exe
      C:\Windows\SysWOW64\rundll32mgrmgr.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:2368
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2368 -s 316
        5⤵
        Program crash
        
        PID:4636
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1648 -s 312
      4⤵
      Program crash
      PID:2864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1648 -ip 1648
1⤵
PID:1668

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2368 -ip 2368
1⤵
PID:1008

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

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Downloads

C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
288KB

MD5
cfe059b10b1bc8f06bb9c6138d483841

SHA1
249c77b3fd7e8ccf8e28265d26b398afa2c35da8

SHA256
8b8112544efbab0d457590a04fe11069073d29f7b912e7c163cb7ab4c215570f

SHA512
f7fc030eb5650cee2ecdd23e4874b51ce76aebda0d639f7ac7d0c4554f51c81998b935b68a57802c154b6a7d76966ec0c6b59e40654e4ac237f7dc6da88d1d46

Download Submit
C:\Windows\SysWOW64\rundll32mgrmgr.exe

Filesize
143KB

MD5
963056968f712dce49fed780756eafa3

SHA1
1f833526e877d34bda4b7aad52be1b52f25c9bf2

SHA256
be71c16ee9e9ea295cf6f266ddf343c4589843e4288a09f60f9e15923d8f8313

SHA512
8ff2bd3c17e6a8730940dcc45faa600c5429a1e5e812821350d8c6448ddcc1526f5246608b5a56592276b15a821a78440adf05652c7dfb2b0016707dce9c958e

Download Submit
memory/1648-6-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1648-12-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2368-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2368-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4156-0-0x0000000010000000-0x0000000010060000-memory.dmp

Filesize
384KB

Download