258ffcc13dbe110bcce21b91f7f075995719791fdd3c9f55ea5934984fa4373d

Analysis

max time kernel
31s
max time network
19s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
07/08/2024, 03:05

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General

Target

543b69f96203ebf17cbb6fb6b4b424f0N.dll
Size

1.9MB
MD5

543b69f96203ebf17cbb6fb6b4b424f0
SHA1

609629f1c48a3f0c0d2635c45a8714c08fbdc76f
SHA256

258ffcc13dbe110bcce21b91f7f075995719791fdd3c9f55ea5934984fa4373d
SHA512

aa394ee33a7fa4a428e2b61b3e7825d3ef3d1087465e096259de5bfa90b57cdeeff21f2b075cd164193311404964f2788c0b09e4cd3c9243ce27348bf49f9d13
SSDEEP

24576:jduagYXnrNOEMudreb7LVkhdyJYKkbg6psPyWwxnMqfbc5MU47iA8koWOmydA7iA:jngjA+rMVL7rZLOkALP7fi6HC+nIzD

Score

6^/10

discovery persistence

Malware Config

Signatures

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\*ChromeUpdate = "rundll32.exe C:\\Users\\Admin\\Documents\\FirefoxData.dll,EntryPoint"	reg.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
924	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2904	2844	WerFault.exe	31

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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 624 wrote to memory of 924	624	rundll32.exe	30
PID 624 wrote to memory of 924	624	rundll32.exe	30
PID 624 wrote to memory of 924	624	rundll32.exe	30
PID 624 wrote to memory of 924	624	rundll32.exe	30
PID 624 wrote to memory of 924	624	rundll32.exe	30
PID 624 wrote to memory of 924	624	rundll32.exe	30
PID 624 wrote to memory of 924	624	rundll32.exe	30
PID 924 wrote to memory of 2844	924	rundll32.exe	31
PID 924 wrote to memory of 2844	924	rundll32.exe	31
PID 924 wrote to memory of 2844	924	rundll32.exe	31
PID 924 wrote to memory of 2844	924	rundll32.exe	31
PID 924 wrote to memory of 2844	924	rundll32.exe	31
PID 924 wrote to memory of 2844	924	rundll32.exe	31
PID 924 wrote to memory of 2844	924	rundll32.exe	31
PID 924 wrote to memory of 2844	924	rundll32.exe	31
PID 924 wrote to memory of 2844	924	rundll32.exe	31
PID 924 wrote to memory of 2844	924	rundll32.exe	31
PID 2844 wrote to memory of 2904	2844	rundll32.exe	32
PID 2844 wrote to memory of 2904	2844	rundll32.exe	32
PID 2844 wrote to memory of 2904	2844	rundll32.exe	32
PID 2844 wrote to memory of 2904	2844	rundll32.exe	32
PID 924 wrote to memory of 2748	924	rundll32.exe	33
PID 924 wrote to memory of 2748	924	rundll32.exe	33
PID 924 wrote to memory of 2748	924	rundll32.exe	33
PID 924 wrote to memory of 2748	924	rundll32.exe	33
PID 2748 wrote to memory of 2636	2748	cmd.exe	35
PID 2748 wrote to memory of 2636	2748	cmd.exe	35
PID 2748 wrote to memory of 2636	2748	cmd.exe	35
PID 2748 wrote to memory of 2636	2748	cmd.exe	35

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\543b69f96203ebf17cbb6fb6b4b424f0N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:624
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\543b69f96203ebf17cbb6fb6b4b424f0N.dll,#1
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:924
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2844
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2844 -s 196
      4⤵
      Program crash
      PID:2904
- - C:\Windows\SysWOW64\cmd.exe
    cmd.exe /C reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*ChromeUpdate" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\FirefoxData.dll",EntryPoint /f & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2748
  - - C:\Windows\SysWOW64\reg.exe
      reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*ChromeUpdate" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\FirefoxData.dll",EntryPoint /f
      4⤵
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:2636

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

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

memory/924-5-0x000000006C940000-0x000000006CB25000-memory.dmp

Filesize
1.9MB

Download
memory/924-0-0x000000006C940000-0x000000006CB25000-memory.dmp

Filesize
1.9MB

Download
memory/924-3-0x000000006C95E000-0x000000006C978000-memory.dmp

Filesize
104KB

Download
memory/924-2-0x000000006C940000-0x000000006CB25000-memory.dmp

Filesize
1.9MB

Download
memory/924-6-0x000000006C940000-0x000000006CB25000-memory.dmp

Filesize
1.9MB

Download
memory/924-16-0x000000006C940000-0x000000006CB25000-memory.dmp

Filesize
1.9MB

Download
memory/924-1-0x000000006C940000-0x000000006CB25000-memory.dmp

Filesize
1.9MB

Download
memory/924-14-0x000000006C940000-0x000000006CB25000-memory.dmp

Filesize
1.9MB

Download
memory/2844-20-0x00000000000D0000-0x000000000014E000-memory.dmp

Filesize
504KB

Download
memory/2844-7-0x00000000000D0000-0x000000000014E000-memory.dmp

Filesize
504KB

Download
memory/2844-17-0x00000000000D0000-0x000000000014E000-memory.dmp

Filesize
504KB

Download
memory/2844-18-0x00000000000D0000-0x000000000014E000-memory.dmp

Filesize
504KB

Download
memory/2844-12-0x0000000000150000-0x0000000000151000-memory.dmp

Filesize
4KB

Download
memory/2844-10-0x0000000000150000-0x0000000000151000-memory.dmp

Filesize
4KB

Download
memory/2844-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads