8638824331336e8fd9015afda82253752b4fe052d6e00d6df843e2309ee81351

Analysis

max time kernel
32s
max time network
19s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
30/07/2024, 10:16

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General

Target
b936853a0c50a0cd0bc8b33103b55bd88e19c6c28768d990b954c11d714286ca.dll
Size 1.9MB
Sample240730-ma22hs1ele
SHA256 b936853a0c50a0cd0bc8b33103b55bd88e19c6c28768d990b954c11d714286ca
MD5 8f4e17608aa8b1678f9c810ba1df77ee
SHA1 5df6dd26be208d81f626c86db9b388d46e7577e5
SHA512 cab27d97c78630f194bff6d87f4a0b7e2f28e4795d1c516e85906079708b456af845cc01575620b0067b7a5a95040b73eb56f7bf53c7d3f719dea4fc695ff8bc
SSDEEP 49152:zdALA+rMVL7LZLOkALP7fiKHnMDpNU0pixrJpI2s2ey5SDjgsWlWOS3lXF5uA6WH:zqAj7Lkkk7Hxs
MD5 SHA1 SHA512 SSDEEP

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
1420	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2740	2208	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	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 1996 wrote to memory of 1420	1996	rundll32.exe	29
PID 1996 wrote to memory of 1420	1996	rundll32.exe	29
PID 1996 wrote to memory of 1420	1996	rundll32.exe	29
PID 1996 wrote to memory of 1420	1996	rundll32.exe	29
PID 1996 wrote to memory of 1420	1996	rundll32.exe	29
PID 1996 wrote to memory of 1420	1996	rundll32.exe	29
PID 1996 wrote to memory of 1420	1996	rundll32.exe	29
PID 1420 wrote to memory of 2208	1420	rundll32.exe	30
PID 1420 wrote to memory of 2208	1420	rundll32.exe	30
PID 1420 wrote to memory of 2208	1420	rundll32.exe	30
PID 1420 wrote to memory of 2208	1420	rundll32.exe	30
PID 1420 wrote to memory of 2208	1420	rundll32.exe	30
PID 1420 wrote to memory of 2208	1420	rundll32.exe	30
PID 1420 wrote to memory of 2208	1420	rundll32.exe	30
PID 1420 wrote to memory of 2208	1420	rundll32.exe	30
PID 1420 wrote to memory of 2208	1420	rundll32.exe	30
PID 1420 wrote to memory of 2208	1420	rundll32.exe	30
PID 2208 wrote to memory of 2740	2208	rundll32.exe	31
PID 2208 wrote to memory of 2740	2208	rundll32.exe	31
PID 2208 wrote to memory of 2740	2208	rundll32.exe	31
PID 2208 wrote to memory of 2740	2208	rundll32.exe	31
PID 1420 wrote to memory of 2800	1420	rundll32.exe	32
PID 1420 wrote to memory of 2800	1420	rundll32.exe	32
PID 1420 wrote to memory of 2800	1420	rundll32.exe	32
PID 1420 wrote to memory of 2800	1420	rundll32.exe	32
PID 2800 wrote to memory of 2836	2800	cmd.exe	34
PID 2800 wrote to memory of 2836	2800	cmd.exe	34
PID 2800 wrote to memory of 2836	2800	cmd.exe	34
PID 2800 wrote to memory of 2836	2800	cmd.exe	34

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b936853a0c50a0cd0bc8b33103b55bd88e19c6c28768d990b954c11d714286ca.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\b936853a0c50a0cd0bc8b33103b55bd88e19c6c28768d990b954c11d714286ca.dll,#1
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1420
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2208
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2208 -s 196
      4⤵
      Program crash
      PID:2740
- - 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:2800
  - - 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:2836

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/1420-0-0x000000006C940000-0x000000006CB26000-memory.dmp

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memory/1420-3-0x000000006C95E000-0x000000006C978000-memory.dmp

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memory/1420-2-0x000000006C940000-0x000000006CB26000-memory.dmp

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memory/1420-4-0x000000006C940000-0x000000006CB26000-memory.dmp

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memory/1420-13-0x000000006C940000-0x000000006CB26000-memory.dmp

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memory/1420-18-0x000000006C940000-0x000000006CB26000-memory.dmp

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memory/2208-5-0x0000000000090000-0x000000000010E000-memory.dmp

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memory/2208-14-0x0000000000090000-0x000000000010E000-memory.dmp

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memory/2208-9-0x0000000000150000-0x0000000000151000-memory.dmp

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memory/2208-15-0x0000000000090000-0x000000000010E000-memory.dmp

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memory/2208-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2208-10-0x0000000000150000-0x0000000000151000-memory.dmp

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memory/2208-17-0x0000000000090000-0x000000000010E000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads