65819aa6eebef5f00ce515e71d0b39bf6b421be5f67c7f235e91daaa8db9f147

Analysis

max time kernel
121s
max time network
126s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
24/12/2023, 17:14

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General

Target

07cff9564f6e6a25ac9a56487cd43e33.dll
Size

236KB
MD5

07cff9564f6e6a25ac9a56487cd43e33
SHA1

9f196b934fe5b6dcf4a804bb010c5273a419adfb
SHA256

65819aa6eebef5f00ce515e71d0b39bf6b421be5f67c7f235e91daaa8db9f147
SHA512

d7f333b7c056cf5c9e7a65ef92f72645e1d1da31f9cece157b1b364d80ea2854f9c1bd5b4afe3f7aa2847e541c4cdea9c5c81586c8a4f8931f210490d630ae76
SSDEEP

3072:SeqmgHwlaazN9U3J+P0wFp+bLrt2wkkIX:+Qj9U3jwO3rt5U

Score

10^/10

persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\yiioo = "{4e2e6fa0-c6a6-1bfb-d7b7-c6a6e728a97f}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
2256	rundll32.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\lvvbb.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\lvvbb.dll	rundll32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4e2e6fa0-c6a6-1bfb-d7b7-c6a6e728a97f}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4e2e6fa0-c6a6-1bfb-d7b7-c6a6e728a97f}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4e2e6fa0-c6a6-1bfb-d7b7-c6a6e728a97f}\InprocServer32\ = "C:\\Windows\\SysWow64\\tddjj.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4e2e6fa0-c6a6-1bfb-d7b7-c6a6e728a97f}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4e2e6fa0-c6a6-1bfb-d7b7-c6a6e728a97f}	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2168 wrote to memory of 2256	2168	rundll32.exe	28
PID 2168 wrote to memory of 2256	2168	rundll32.exe	28
PID 2168 wrote to memory of 2256	2168	rundll32.exe	28
PID 2168 wrote to memory of 2256	2168	rundll32.exe	28
PID 2168 wrote to memory of 2256	2168	rundll32.exe	28
PID 2168 wrote to memory of 2256	2168	rundll32.exe	28
PID 2168 wrote to memory of 2256	2168	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\07cff9564f6e6a25ac9a56487cd43e33.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2168
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\07cff9564f6e6a25ac9a56487cd43e33.dll,#1
  2⤵
  - Adds autorun key to be loaded by Explorer.exe on startup
  - Loads dropped DLL
  - Drops file in System32 directory
  - Modifies registry class
  PID:2256

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Windows\SysWOW64\lvvbb.dll

Filesize
625KB

MD5
95e2376b3323f062eb562b8586d0f14a

SHA1
453d4c3bf4a489433b593420a37bbffb7749875a

SHA256
bd3fa8750123d00aa0967fba44372c46ea002681da9c9b77a4f9261553e26017

SHA512
b898603d07a49237e4dfc6872d5caa7616bae1258926f10e66c4d3f0d81cccefac1e844395b65bb1f308fbc022061b52e51f60658d0a546c04b365b3428cc87d

Download Submit
memory/2256-0-0x0000000000170000-0x00000000001B4000-memory.dmp

Filesize
272KB

Download
memory/2256-2-0x0000000000170000-0x00000000001B4000-memory.dmp

Filesize
272KB

Download
memory/2256-8-0x0000000075660000-0x0000000075700000-memory.dmp

Filesize
640KB

Download
memory/2256-7-0x0000000000170000-0x00000000001B4000-memory.dmp

Filesize
272KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads