Malware Analysis Report

2024-11-16 13:43

Sample ID 240607-nbczfsfc4z
Target c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3
SHA256 c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3
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

c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3

Threat Level: Known bad

The file c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3 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

Suspicious use of WriteProcessMemory

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-07 11:13

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-07 11:12

Reported

2024-06-07 11:15

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.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\kat5525.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 224 set thread context of 2868 N/A C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe C:\Users\Admin\AppData\Local\Temp\kat5525.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\kat5525.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat5525.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat5525.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 224 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe C:\Users\Admin\AppData\Local\Temp\kat5525.tmp
PID 224 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe C:\Users\Admin\AppData\Local\Temp\kat5525.tmp
PID 224 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe C:\Users\Admin\AppData\Local\Temp\kat5525.tmp
PID 224 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe C:\Users\Admin\AppData\Local\Temp\kat5525.tmp
PID 224 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe C:\Users\Admin\AppData\Local\Temp\kat5525.tmp
PID 224 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe C:\Users\Admin\AppData\Local\Temp\kat5525.tmp
PID 224 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe C:\Users\Admin\AppData\Local\Temp\kat5525.tmp
PID 224 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe C:\Users\Admin\AppData\Local\Temp\kat5525.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe

"C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe"

C:\Users\Admin\AppData\Local\Temp\kat5525.tmp

C:\Users\Admin\AppData\Local\Temp\kat5525.tmp

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
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 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 23.249.124.192.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
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 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 udp

Files

memory/224-0-0x00000000022D0000-0x00000000022D1000-memory.dmp

memory/224-1-0x0000000002B40000-0x0000000002CA3000-memory.dmp

memory/2868-4-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat5525.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/2868-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2868-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/224-6-0x0000000000400000-0x000000000067A000-memory.dmp

memory/2868-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2868-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2868-25-0x000000001B7C0000-0x000000001BA1F000-memory.dmp

memory/2868-40-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2868-41-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-07 11:12

Reported

2024-06-07 11:15

Platform

win11-20240426-en

Max time kernel

92s

Max time network

96s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.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\kat3DA5.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 5040 set thread context of 5036 N/A C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe C:\Users\Admin\AppData\Local\Temp\kat3DA5.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\kat3DA5.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat3DA5.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat3DA5.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 5040 wrote to memory of 5036 N/A C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe C:\Users\Admin\AppData\Local\Temp\kat3DA5.tmp
PID 5040 wrote to memory of 5036 N/A C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe C:\Users\Admin\AppData\Local\Temp\kat3DA5.tmp
PID 5040 wrote to memory of 5036 N/A C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe C:\Users\Admin\AppData\Local\Temp\kat3DA5.tmp
PID 5040 wrote to memory of 5036 N/A C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe C:\Users\Admin\AppData\Local\Temp\kat3DA5.tmp
PID 5040 wrote to memory of 5036 N/A C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe C:\Users\Admin\AppData\Local\Temp\kat3DA5.tmp
PID 5040 wrote to memory of 5036 N/A C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe C:\Users\Admin\AppData\Local\Temp\kat3DA5.tmp
PID 5040 wrote to memory of 5036 N/A C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe C:\Users\Admin\AppData\Local\Temp\kat3DA5.tmp
PID 5040 wrote to memory of 5036 N/A C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe C:\Users\Admin\AppData\Local\Temp\kat3DA5.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe

"C:\Users\Admin\AppData\Local\Temp\c2eccf4454452088897a66b59a1d3d785d834f9251a6a92a5106288ecd2b64c3.exe"

C:\Users\Admin\AppData\Local\Temp\kat3DA5.tmp

C:\Users\Admin\AppData\Local\Temp\kat3DA5.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
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
US 8.8.8.8:53 172.210.232.199.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

Files

memory/5040-0-0x0000000000930000-0x0000000000931000-memory.dmp

memory/5040-1-0x0000000004140000-0x00000000042A3000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat3DA5.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/5036-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5036-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5036-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5040-9-0x0000000000400000-0x000000000067A000-memory.dmp

memory/5036-15-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5036-16-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5036-18-0x0000000019360000-0x00000000195BF000-memory.dmp

memory/5036-33-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5036-34-0x0000000000400000-0x0000000000648000-memory.dmp