46604cb79716d7402b03cf68c6aa353d1c560d750bc82a1b4d549309a4d58ff4

Analysis

max time kernel
149s
max time network
123s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
03-03-2024 01:08

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General

Target

Email-Worm/Lentin/Lentin.d.exe
Size

26KB
MD5

d9ce0273f791da275ed2a69446413a87
SHA1

38cf7ea93d74fb770bfba766845cf29bef0169df
SHA256

aa2e8d70654e30cf11e2b57e92cea72a9823a048f75fc9029da04e1e4d8a9810
SHA512

a521b2a55207c9996c0399bc0403c0865c23bf7457b5cfa80d0bec2c2eeb898a30599d99dda15ece4aa5db405c46ea4183d4b3bac20a3d5836775efccedd0f8e
SSDEEP

384:EfhdE5u7Gd2xurrqotHeK5oeh94uKcAvl50HHMqn7VtN3F/n4tyyUGLtFly0s:SEc7KPrGotHeKzAXvWMO13ZerL/5s

Score

7^/10

persistence

Malware Config

Signatures

Modifies system executable filetype association 2 TTPs 2 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

Processes:

Lentin.d.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	Lentin.d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"C:\\Windows\\tlcfpu\" %1 %*"	Lentin.d.exe

Drops file in Windows directory 4 IoCs

Processes:

Lentin.d.exe

description	ioc	process
File created	C:\Windows\tlcfpu.txt	Lentin.d.exe
File created	C:\Windows\tlcfpu.exe	Lentin.d.exe
File opened for modification	C:\Windows\tlcfpu.exe	Lentin.d.exe
File opened for modification	C:\Windows\tlcfputlcfpu.dll	Lentin.d.exe

Modifies registry class 2 IoCs

Processes:

Lentin.d.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	Lentin.d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"C:\\Windows\\tlcfpu\" %1 %*"	Lentin.d.exe

C:\Users\Admin\AppData\Local\Temp\Email-Worm\Lentin\Lentin.d.exe
"C:\Users\Admin\AppData\Local\Temp\Email-Worm\Lentin\Lentin.d.exe"
1⤵
- Modifies system executable filetype association
- Drops file in Windows directory
- Modifies registry class
PID:2416

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Privilege Escalation

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

memory/2416-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

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memory/2416-5-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads