Malware Analysis Report

2024-11-16 13:51

Sample ID 240628-b78d1sxdkm
Target c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243
SHA256 c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243
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

c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243

Threat Level: Known bad

The file c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243 was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Detect Vidar Stealer

Stealc

Vidar

Downloads MZ/PE file

Checks computer location settings

Executes dropped EXE

Reads user/profile data of web browsers

Reads data files stored by FTP clients

Accesses cryptocurrency files/wallets, possible credential harvesting

Checks installed software on the system

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Delays execution with timeout.exe

Suspicious use of WriteProcessMemory

Checks processor information in registry

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-28 01:48

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 01:48

Reported

2024-06-28 01:50

Platform

win10v2004-20240611-en

Max time kernel

146s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe"

Signatures

Detect Vidar Stealer

stealer
Description Indicator Process Target
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Stealc

stealer stealc

Vidar

stealer vidar

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\kat6263.tmp N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat6263.tmp N/A

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4016 set thread context of 5096 N/A C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe C:\Users\Admin\AppData\Local\Temp\kat6263.tmp

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\kat6263.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat6263.tmp N/A

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\timeout.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4016 wrote to memory of 5096 N/A C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe C:\Users\Admin\AppData\Local\Temp\kat6263.tmp
PID 4016 wrote to memory of 5096 N/A C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe C:\Users\Admin\AppData\Local\Temp\kat6263.tmp
PID 4016 wrote to memory of 5096 N/A C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe C:\Users\Admin\AppData\Local\Temp\kat6263.tmp
PID 4016 wrote to memory of 5096 N/A C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe C:\Users\Admin\AppData\Local\Temp\kat6263.tmp
PID 4016 wrote to memory of 5096 N/A C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe C:\Users\Admin\AppData\Local\Temp\kat6263.tmp
PID 4016 wrote to memory of 5096 N/A C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe C:\Users\Admin\AppData\Local\Temp\kat6263.tmp
PID 4016 wrote to memory of 5096 N/A C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe C:\Users\Admin\AppData\Local\Temp\kat6263.tmp
PID 4016 wrote to memory of 5096 N/A C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe C:\Users\Admin\AppData\Local\Temp\kat6263.tmp
PID 5096 wrote to memory of 1676 N/A C:\Users\Admin\AppData\Local\Temp\kat6263.tmp C:\Windows\SysWOW64\cmd.exe
PID 5096 wrote to memory of 1676 N/A C:\Users\Admin\AppData\Local\Temp\kat6263.tmp C:\Windows\SysWOW64\cmd.exe
PID 5096 wrote to memory of 1676 N/A C:\Users\Admin\AppData\Local\Temp\kat6263.tmp C:\Windows\SysWOW64\cmd.exe
PID 1676 wrote to memory of 2424 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1676 wrote to memory of 2424 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1676 wrote to memory of 2424 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe

"C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe"

C:\Users\Admin\AppData\Local\Temp\kat6263.tmp

C:\Users\Admin\AppData\Local\Temp\kat6263.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat6263.tmp" & rd /s /q "C:\ProgramData\BAAAAKJKJEBG" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

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 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 18.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
BE 23.41.178.64:443 www.bing.com tcp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 64.178.41.23.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 t.me udp
NL 149.154.167.99:443 t.me tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
US 8.8.8.8:53 36.249.124.192.in-addr.arpa udp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
DE 195.201.251.214:9000 195.201.251.214 tcp
US 8.8.8.8:53 214.251.201.195.in-addr.arpa udp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
US 8.8.8.8:53 tea.arpdabl.org udp
DE 207.180.253.128:80 tea.arpdabl.org tcp
US 8.8.8.8:53 128.253.180.207.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 25.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp

Files

memory/4016-0-0x0000000000920000-0x0000000000921000-memory.dmp

memory/4016-3-0x00000000029D0000-0x0000000002AE0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat6263.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/5096-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5096-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5096-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4016-9-0x0000000000400000-0x000000000058E000-memory.dmp

memory/5096-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5096-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5096-25-0x00000000200D0000-0x000000002032F000-memory.dmp

memory/5096-33-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5096-34-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5096-42-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5096-43-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5096-59-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5096-60-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5096-67-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5096-72-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5096-73-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5096-76-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 01:48

Reported

2024-06-28 01:50

Platform

win11-20240508-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe"

Signatures

Detect Vidar Stealer

stealer
Description Indicator Process Target
N/A N/A N/A N/A
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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\kat637D.tmp N/A

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 636 set thread context of 832 N/A C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe C:\Users\Admin\AppData\Local\Temp\kat637D.tmp

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\kat637D.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat637D.tmp N/A

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\timeout.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 636 wrote to memory of 832 N/A C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe C:\Users\Admin\AppData\Local\Temp\kat637D.tmp
PID 636 wrote to memory of 832 N/A C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe C:\Users\Admin\AppData\Local\Temp\kat637D.tmp
PID 636 wrote to memory of 832 N/A C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe C:\Users\Admin\AppData\Local\Temp\kat637D.tmp
PID 636 wrote to memory of 832 N/A C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe C:\Users\Admin\AppData\Local\Temp\kat637D.tmp
PID 636 wrote to memory of 832 N/A C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe C:\Users\Admin\AppData\Local\Temp\kat637D.tmp
PID 636 wrote to memory of 832 N/A C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe C:\Users\Admin\AppData\Local\Temp\kat637D.tmp
PID 636 wrote to memory of 832 N/A C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe C:\Users\Admin\AppData\Local\Temp\kat637D.tmp
PID 636 wrote to memory of 832 N/A C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe C:\Users\Admin\AppData\Local\Temp\kat637D.tmp
PID 832 wrote to memory of 3664 N/A C:\Users\Admin\AppData\Local\Temp\kat637D.tmp C:\Windows\SysWOW64\cmd.exe
PID 832 wrote to memory of 3664 N/A C:\Users\Admin\AppData\Local\Temp\kat637D.tmp C:\Windows\SysWOW64\cmd.exe
PID 832 wrote to memory of 3664 N/A C:\Users\Admin\AppData\Local\Temp\kat637D.tmp C:\Windows\SysWOW64\cmd.exe
PID 3664 wrote to memory of 1728 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 3664 wrote to memory of 1728 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 3664 wrote to memory of 1728 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe

"C:\Users\Admin\AppData\Local\Temp\c2051a18433a7b3516fea85d681b74f4cda569e5df1c5da6ae3ac3e141821243.exe"

C:\Users\Admin\AppData\Local\Temp\kat637D.tmp

C:\Users\Admin\AppData\Local\Temp\kat637D.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat637D.tmp" & rd /s /q "C:\ProgramData\DHIEHIIEHIEH" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
US 8.8.8.8:53 t.me udp
NL 149.154.167.99:443 t.me tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 25.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 36.249.124.192.in-addr.arpa udp
US 8.8.8.8:53 214.251.201.195.in-addr.arpa udp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 207.180.253.128:80 tea.arpdabl.org tcp

Files

memory/636-0-0x0000000002420000-0x0000000002421000-memory.dmp

memory/636-1-0x00000000040E0000-0x00000000041F0000-memory.dmp

memory/832-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/832-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/636-10-0x0000000000400000-0x000000000058E000-memory.dmp

memory/832-9-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat637D.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/832-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/832-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/832-28-0x000000002F6D0000-0x000000002F92F000-memory.dmp

memory/832-42-0x0000000000400000-0x0000000000648000-memory.dmp

memory/832-59-0x0000000000400000-0x0000000000648000-memory.dmp

memory/832-43-0x0000000000400000-0x0000000000648000-memory.dmp

memory/832-60-0x0000000000400000-0x0000000000648000-memory.dmp

memory/832-71-0x0000000000400000-0x0000000000648000-memory.dmp

memory/832-72-0x0000000000400000-0x0000000000648000-memory.dmp

memory/832-73-0x0000000000400000-0x0000000000648000-memory.dmp

memory/832-76-0x0000000000400000-0x0000000000648000-memory.dmp