46604cb79716d7402b03cf68c6aa353d1c560d750bc82a1b4d549309a4d58ff4

Analysis

max time kernel
147s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
03-03-2024 01:08

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Email-Worm/Lacon.exe
Size

12KB
MD5

cb0f7b3fd927cf0d0ba36302e6f9af86
SHA1

32bdc349a35916e8991e69e9be1bd2596b6321cc
SHA256

9b3f73a12a793d1648f3209e1e3f10bbb548b1ec21d53b8ac060b7b95ae4ef1f
SHA512

e6152f3645d73c63f3f3aa9881fe8b404f9794b14a8ecaea659621828462baf042c13c88bb7f2c32277fa854ceda3056d09aa5603e92b107c6c8194464154252
SSDEEP

192:W+4C8fFkIp+ShIKIw4MUbLblp1E7qBalMyIl3PAHN0PhNx:W5kIp1IM4MUbPn1afIK4x

Score

7^/10

persistence upx

Malware Config

Signatures

Drops startup file 2 IoCs

Processes:

Lacon.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Configuration Utility.exe	Lacon.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Configuration Utility.exe	Lacon.exe

UPX packed file 3 IoCs

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

upx

Processes:

resource	yara_rule
behavioral14/memory/2352-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
C:\Windows\SysWOW64\No Call List.exe	upx
behavioral14/memory/2352-10-0x0000000000400000-0x000000000040E000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Lacon.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Bndt32 = "C:\\Windows\\System32\\Bndt32.exe"	Lacon.exe

Drops file in System32 directory 5 IoCs

Processes:

Lacon.exe

description	ioc	process
File created	C:\Windows\SysWOW64\Bndt32.exe	Lacon.exe
File opened for modification	C:\Windows\SysWOW64\Bndt32.exe	Lacon.exe
File created	C:\Windows\SysWOW64\No Call List.exe	Lacon.exe
File opened for modification	C:\Windows\SysWOW64\No Call List.exe	Lacon.exe
File created	C:\Windows\SysWOW64\Bndt32.txt	Lacon.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Lacon.exe

pid process

2352 Lacon.exe

pid	process
2352	Lacon.exe

C:\Users\Admin\AppData\Local\Temp\Email-Worm\Lacon.exe
"C:\Users\Admin\AppData\Local\Temp\Email-Worm\Lacon.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
PID:2352

Network

MITRE ATT&CK Matrix ATT&CK v13

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 Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\No Call List.exe
Filesize
12KB

MD5
cb0f7b3fd927cf0d0ba36302e6f9af86

SHA1
32bdc349a35916e8991e69e9be1bd2596b6321cc

SHA256
9b3f73a12a793d1648f3209e1e3f10bbb548b1ec21d53b8ac060b7b95ae4ef1f

SHA512
e6152f3645d73c63f3f3aa9881fe8b404f9794b14a8ecaea659621828462baf042c13c88bb7f2c32277fa854ceda3056d09aa5603e92b107c6c8194464154252

Download Submit
memory/2352-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2352-10-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download