Malware Analysis Report

2024-11-16 13:48

Sample ID 240629-bvw58axfmf
Target f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc
SHA256 f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc
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

f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc

Threat Level: Known bad

The file f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Detect Vidar Stealer

Stealc

Vidar

Downloads MZ/PE file

Reads user/profile data of web browsers

Executes dropped EXE

Reads data files stored by FTP clients

Checks computer location settings

Checks installed software on the system

Accesses cryptocurrency files/wallets, possible credential harvesting

Suspicious use of SetThreadContext

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Delays execution with timeout.exe

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-29 01:28

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-29 01:28

Reported

2024-06-29 01:31

Platform

win10v2004-20240611-en

Max time kernel

129s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.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-1-5-21-4204450073-1267028356-951339405-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\kat38F2.tmp N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat38F2.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 2760 set thread context of 4408 N/A C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe C:\Users\Admin\AppData\Local\Temp\kat38F2.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\kat38F2.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat38F2.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 2760 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe C:\Users\Admin\AppData\Local\Temp\kat38F2.tmp
PID 2760 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe C:\Users\Admin\AppData\Local\Temp\kat38F2.tmp
PID 2760 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe C:\Users\Admin\AppData\Local\Temp\kat38F2.tmp
PID 2760 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe C:\Users\Admin\AppData\Local\Temp\kat38F2.tmp
PID 2760 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe C:\Users\Admin\AppData\Local\Temp\kat38F2.tmp
PID 2760 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe C:\Users\Admin\AppData\Local\Temp\kat38F2.tmp
PID 2760 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe C:\Users\Admin\AppData\Local\Temp\kat38F2.tmp
PID 2760 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe C:\Users\Admin\AppData\Local\Temp\kat38F2.tmp
PID 4408 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\kat38F2.tmp C:\Windows\SysWOW64\cmd.exe
PID 4408 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\kat38F2.tmp C:\Windows\SysWOW64\cmd.exe
PID 4408 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\kat38F2.tmp C:\Windows\SysWOW64\cmd.exe
PID 2528 wrote to memory of 5104 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2528 wrote to memory of 5104 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2528 wrote to memory of 5104 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe

"C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe"

C:\Users\Admin\AppData\Local\Temp\kat38F2.tmp

C:\Users\Admin\AppData\Local\Temp\kat38F2.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat38F2.tmp" & rd /s /q "C:\ProgramData\CAFHDBGHJKFI" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
BE 23.41.178.51:443 www.bing.com tcp
US 8.8.8.8:53 51.178.41.23.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.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 22.249.124.192.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
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
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
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
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 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 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 150.171.27.10:443 tse1.mm.bing.net tcp
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 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp

Files

memory/2760-0-0x00000000023D0000-0x00000000023D1000-memory.dmp

memory/2760-1-0x0000000002BF0000-0x0000000002D00000-memory.dmp

memory/4408-4-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat38F2.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/4408-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4408-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2760-10-0x0000000000400000-0x0000000000635000-memory.dmp

memory/4408-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4408-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4408-25-0x0000000024C00000-0x0000000024E5F000-memory.dmp

memory/4408-33-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4408-34-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4408-42-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4408-43-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4408-59-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4408-60-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4408-71-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4408-72-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4408-73-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4408-74-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-29 01:28

Reported

2024-06-29 01:31

Platform

win11-20240611-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe"

Signatures

Detect Vidar Stealer

stealer
Description Indicator Process Target
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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\kat5043.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 2324 set thread context of 868 N/A C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe C:\Users\Admin\AppData\Local\Temp\kat5043.tmp

Enumerates physical storage devices

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\kat5043.tmp N/A
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\kat5043.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 2324 wrote to memory of 868 N/A C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe C:\Users\Admin\AppData\Local\Temp\kat5043.tmp
PID 2324 wrote to memory of 868 N/A C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe C:\Users\Admin\AppData\Local\Temp\kat5043.tmp
PID 2324 wrote to memory of 868 N/A C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe C:\Users\Admin\AppData\Local\Temp\kat5043.tmp
PID 2324 wrote to memory of 868 N/A C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe C:\Users\Admin\AppData\Local\Temp\kat5043.tmp
PID 2324 wrote to memory of 868 N/A C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe C:\Users\Admin\AppData\Local\Temp\kat5043.tmp
PID 2324 wrote to memory of 868 N/A C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe C:\Users\Admin\AppData\Local\Temp\kat5043.tmp
PID 2324 wrote to memory of 868 N/A C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe C:\Users\Admin\AppData\Local\Temp\kat5043.tmp
PID 2324 wrote to memory of 868 N/A C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe C:\Users\Admin\AppData\Local\Temp\kat5043.tmp
PID 868 wrote to memory of 472 N/A C:\Users\Admin\AppData\Local\Temp\kat5043.tmp C:\Windows\SysWOW64\cmd.exe
PID 868 wrote to memory of 472 N/A C:\Users\Admin\AppData\Local\Temp\kat5043.tmp C:\Windows\SysWOW64\cmd.exe
PID 868 wrote to memory of 472 N/A C:\Users\Admin\AppData\Local\Temp\kat5043.tmp C:\Windows\SysWOW64\cmd.exe
PID 472 wrote to memory of 2544 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 472 wrote to memory of 2544 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 472 wrote to memory of 2544 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe

"C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe"

C:\Users\Admin\AppData\Local\Temp\kat5043.tmp

C:\Users\Admin\AppData\Local\Temp\kat5043.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat5043.tmp" & rd /s /q "C:\ProgramData\BAAFIJKKEHJD" & 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
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 22.249.124.192.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 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/2324-0-0x0000000002390000-0x0000000002391000-memory.dmp

memory/2324-2-0x00000000040B0000-0x00000000041C0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat5043.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/868-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/868-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/868-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2324-9-0x0000000000400000-0x0000000000635000-memory.dmp

memory/868-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/868-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/868-27-0x000000002D120000-0x000000002D37F000-memory.dmp

memory/868-35-0x0000000000400000-0x0000000000648000-memory.dmp

memory/868-36-0x0000000000400000-0x0000000000648000-memory.dmp

memory/868-44-0x0000000000400000-0x0000000000648000-memory.dmp

memory/868-45-0x0000000000400000-0x0000000000648000-memory.dmp

memory/868-61-0x0000000000400000-0x0000000000648000-memory.dmp

memory/868-62-0x0000000000400000-0x0000000000648000-memory.dmp

memory/868-73-0x0000000000400000-0x0000000000648000-memory.dmp

memory/868-74-0x0000000000400000-0x0000000000648000-memory.dmp

memory/868-75-0x0000000000400000-0x0000000000648000-memory.dmp

memory/868-78-0x0000000000400000-0x0000000000648000-memory.dmp