Malware Analysis Report

2024-11-16 13:43

Sample ID 240608-ed7r6sgf3y
Target 38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2
SHA256 38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2
Tags
stealc vidar discovery spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2

Threat Level: Known bad

The file 38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2 was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Stealc

Vidar

Detect Vidar Stealer

Downloads MZ/PE file

Executes dropped EXE

Reads user/profile data of web browsers

Checks installed software on the system

Suspicious use of SetThreadContext

Unsigned PE

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-08 03:50

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-08 03:50

Reported

2024-06-08 03:53

Platform

win10v2004-20240508-en

Max time kernel

93s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe"

Signatures

Detect Vidar Stealer

stealer
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Stealc

stealer stealc

Vidar

stealer vidar

Downloads MZ/PE file

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat44AA.tmp N/A

Reads user/profile data of web browsers

spyware stealer

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1488 set thread context of 4420 N/A C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe C:\Users\Admin\AppData\Local\Temp\kat44AA.tmp

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat44AA.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat44AA.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat44AA.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1488 wrote to memory of 4420 N/A C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe C:\Users\Admin\AppData\Local\Temp\kat44AA.tmp
PID 1488 wrote to memory of 4420 N/A C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe C:\Users\Admin\AppData\Local\Temp\kat44AA.tmp
PID 1488 wrote to memory of 4420 N/A C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe C:\Users\Admin\AppData\Local\Temp\kat44AA.tmp
PID 1488 wrote to memory of 4420 N/A C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe C:\Users\Admin\AppData\Local\Temp\kat44AA.tmp
PID 1488 wrote to memory of 4420 N/A C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe C:\Users\Admin\AppData\Local\Temp\kat44AA.tmp
PID 1488 wrote to memory of 4420 N/A C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe C:\Users\Admin\AppData\Local\Temp\kat44AA.tmp
PID 1488 wrote to memory of 4420 N/A C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe C:\Users\Admin\AppData\Local\Temp\kat44AA.tmp
PID 1488 wrote to memory of 4420 N/A C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe C:\Users\Admin\AppData\Local\Temp\kat44AA.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe

"C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe"

C:\Users\Admin\AppData\Local\Temp\kat44AA.tmp

C:\Users\Admin\AppData\Local\Temp\kat44AA.tmp

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 t.me udp
NL 149.154.167.99:443 t.me tcp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 36.249.124.192.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
US 8.8.8.8:53 18.190.202.116.in-addr.arpa udp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp

Files

memory/1488-0-0x0000000000800000-0x0000000000801000-memory.dmp

memory/1488-2-0x0000000002BC0000-0x0000000002D23000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat44AA.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/4420-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4420-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4420-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1488-9-0x0000000000400000-0x000000000067A000-memory.dmp

memory/4420-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4420-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4420-25-0x000000001DC90000-0x000000001DEEF000-memory.dmp

memory/4420-40-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4420-41-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-08 03:50

Reported

2024-06-08 03:53

Platform

win11-20240508-en

Max time kernel

146s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe"

Signatures

Detect Vidar Stealer

stealer
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Stealc

stealer stealc

Vidar

stealer vidar

Downloads MZ/PE file

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat62F0.tmp N/A

Reads user/profile data of web browsers

spyware stealer

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2720 set thread context of 1552 N/A C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe C:\Users\Admin\AppData\Local\Temp\kat62F0.tmp

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat62F0.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat62F0.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat62F0.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2720 wrote to memory of 1552 N/A C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe C:\Users\Admin\AppData\Local\Temp\kat62F0.tmp
PID 2720 wrote to memory of 1552 N/A C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe C:\Users\Admin\AppData\Local\Temp\kat62F0.tmp
PID 2720 wrote to memory of 1552 N/A C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe C:\Users\Admin\AppData\Local\Temp\kat62F0.tmp
PID 2720 wrote to memory of 1552 N/A C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe C:\Users\Admin\AppData\Local\Temp\kat62F0.tmp
PID 2720 wrote to memory of 1552 N/A C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe C:\Users\Admin\AppData\Local\Temp\kat62F0.tmp
PID 2720 wrote to memory of 1552 N/A C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe C:\Users\Admin\AppData\Local\Temp\kat62F0.tmp
PID 2720 wrote to memory of 1552 N/A C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe C:\Users\Admin\AppData\Local\Temp\kat62F0.tmp
PID 2720 wrote to memory of 1552 N/A C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe C:\Users\Admin\AppData\Local\Temp\kat62F0.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe

"C:\Users\Admin\AppData\Local\Temp\38d61e3df62efed32482afc3cdc8facaa72760d43305c9bfe9d79ce2e5f2c3b2.exe"

C:\Users\Admin\AppData\Local\Temp\kat62F0.tmp

C:\Users\Admin\AppData\Local\Temp\kat62F0.tmp

Network

Country Destination Domain Proto
US 8.8.8.8:53 t.me udp
NL 149.154.167.99:443 t.me tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 80.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 22.249.124.192.in-addr.arpa udp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp

Files

memory/2720-0-0x00000000023D0000-0x00000000023D1000-memory.dmp

memory/2720-2-0x0000000004140000-0x00000000042A3000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat62F0.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/1552-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1552-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1552-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2720-9-0x0000000000400000-0x000000000067A000-memory.dmp

memory/1552-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1552-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1552-27-0x00000000260E0000-0x000000002633F000-memory.dmp

memory/1552-42-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1552-43-0x0000000000400000-0x0000000000648000-memory.dmp