6372eff8ffd9f871a8763263cc240387c321db5cdcf1e28e2d61d1f5c15092bd

Analysis

max time kernel
101s
max time network
102s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
27-07-2024 03:56

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General

Target

8d2882ede2ff875292739f125a8f3290N.exe
Size

57KB
MD5

8d2882ede2ff875292739f125a8f3290
SHA1

fb8d53da512f755bd617e2a4d418d07c1d8465e6
SHA256

6372eff8ffd9f871a8763263cc240387c321db5cdcf1e28e2d61d1f5c15092bd
SHA512

6fe8e54cfda0633f5c06bc600bcf727706d11ce1f40ea0e8c8c33376d50a007e4a8625656c1c1b220207df81d35894f3002dff8bf6d365970909ae5d0c835a7e
SSDEEP

1536:J5Vtu7dTkk3fFOMsbybXM/1nd20efLLTUq3wSOwwck/iXr7NFD0:JnMlkUJ4oi180aUFrck/ur73

Score

8^/10

discovery persistence upx

Malware Config

Signatures

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1896	rundll32.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1004-0-0x0000000000400000-0x0000000000447000-memory.dmp	upx
behavioral2/memory/1004-5-0x0000000000400000-0x0000000000447000-memory.dmp	upx

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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\3PMmUpdate = "rundll32 \"C:\\Windows\\Update.dll\",Main"	8d2882ede2ff875292739f125a8f3290N.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Update.dll	8d2882ede2ff875292739f125a8f3290N.exe

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	8d2882ede2ff875292739f125a8f3290N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1004 wrote to memory of 1896	1004	8d2882ede2ff875292739f125a8f3290N.exe	84
PID 1004 wrote to memory of 1896	1004	8d2882ede2ff875292739f125a8f3290N.exe	84
PID 1004 wrote to memory of 1896	1004	8d2882ede2ff875292739f125a8f3290N.exe	84
PID 1004 wrote to memory of 4208	1004	8d2882ede2ff875292739f125a8f3290N.exe	85
PID 1004 wrote to memory of 4208	1004	8d2882ede2ff875292739f125a8f3290N.exe	85
PID 1004 wrote to memory of 4208	1004	8d2882ede2ff875292739f125a8f3290N.exe	85

C:\Users\Admin\AppData\Local\Temp\8d2882ede2ff875292739f125a8f3290N.exe
"C:\Users\Admin\AppData\Local\Temp\8d2882ede2ff875292739f125a8f3290N.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1004
- C:\Windows\SysWOW64\rundll32.exe
  rundll32 "C:\Windows\Update.dll",Main
  2⤵
  - Drops file in Drivers directory
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:1896
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\\KB20312.bat"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4208

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

C:\Users\Admin\AppData\Local\Temp\KB20312.bat

Filesize
231B

MD5
50fbad6eb03f2e07ac7ab44c3730ac62

SHA1
5d64672189e0eccb28d41e8107668217e1cc2b71

SHA256
0530bfc42b1535f46a1a7c3411db2f3a352e84a13a0164eb944cc54fa1e4f744

SHA512
8f726bd0d66d15fcc1bbe211e1708a16813897205b1c786a49d56fa37a5e773e6dcd06bd25351abe3662e504e02f028b737e5590170e597ea639fd38783fd89a

Download Submit
C:\Windows\Update.dll

Filesize
252KB

MD5
77f9a0c53d0b18a9eb12cd62e9bc602f

SHA1
deba59873e9d749374aa67c3be18c27924fa5a03

SHA256
346679df2dbf08c448770ba5cbff751541179018f509d6a56193d3580e86dfb8

SHA512
5e36d88f0a4d534189a0ddb73739d187296e3c2b43b6d3af2f7724972d4f5566be4485a83a61b151417fe6325c5b920d55ec2a1c0ef4d7a24d6ada54912b5407

Download Submit
memory/1004-0-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/1004-5-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads