Malware Analysis Report

2024-11-16 13:51

Sample ID 240628-cqcfpawbrf
Target 4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd
SHA256 4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd
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

4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd

Threat Level: Known bad

The file 4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Detect Vidar Stealer

Vidar

Stealc

Downloads MZ/PE file

Checks computer location settings

Executes dropped EXE

Reads data files stored by FTP clients

Reads user/profile data of web browsers

Checks installed software on the system

Accesses cryptocurrency files/wallets, possible credential harvesting

Suspicious use of SetThreadContext

Unsigned PE

Enumerates physical storage devices

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Delays execution with timeout.exe

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-28 02:16

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 02:16

Reported

2024-06-28 02:19

Platform

win10v2004-20240611-en

Max time kernel

128s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.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\kat39CD.tmp N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat39CD.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 2660 set thread context of 1244 N/A C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe C:\Users\Admin\AppData\Local\Temp\kat39CD.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\kat39CD.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat39CD.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 2660 wrote to memory of 1244 N/A C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe C:\Users\Admin\AppData\Local\Temp\kat39CD.tmp
PID 2660 wrote to memory of 1244 N/A C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe C:\Users\Admin\AppData\Local\Temp\kat39CD.tmp
PID 2660 wrote to memory of 1244 N/A C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe C:\Users\Admin\AppData\Local\Temp\kat39CD.tmp
PID 2660 wrote to memory of 1244 N/A C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe C:\Users\Admin\AppData\Local\Temp\kat39CD.tmp
PID 2660 wrote to memory of 1244 N/A C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe C:\Users\Admin\AppData\Local\Temp\kat39CD.tmp
PID 2660 wrote to memory of 1244 N/A C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe C:\Users\Admin\AppData\Local\Temp\kat39CD.tmp
PID 2660 wrote to memory of 1244 N/A C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe C:\Users\Admin\AppData\Local\Temp\kat39CD.tmp
PID 2660 wrote to memory of 1244 N/A C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe C:\Users\Admin\AppData\Local\Temp\kat39CD.tmp
PID 1244 wrote to memory of 3164 N/A C:\Users\Admin\AppData\Local\Temp\kat39CD.tmp C:\Windows\SysWOW64\cmd.exe
PID 1244 wrote to memory of 3164 N/A C:\Users\Admin\AppData\Local\Temp\kat39CD.tmp C:\Windows\SysWOW64\cmd.exe
PID 1244 wrote to memory of 3164 N/A C:\Users\Admin\AppData\Local\Temp\kat39CD.tmp C:\Windows\SysWOW64\cmd.exe
PID 3164 wrote to memory of 3208 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 3164 wrote to memory of 3208 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 3164 wrote to memory of 3208 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe

"C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe"

C:\Users\Admin\AppData\Local\Temp\kat39CD.tmp

C:\Users\Admin\AppData\Local\Temp\kat39CD.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat39CD.tmp" & rd /s /q "C:\ProgramData\CAKFIJDHJEGI" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.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
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 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 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 28.118.140.52.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 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 24.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/2660-0-0x0000000000760000-0x0000000000761000-memory.dmp

memory/2660-1-0x0000000002920000-0x0000000002A30000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat39CD.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/1244-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2660-10-0x0000000000400000-0x000000000058E000-memory.dmp

memory/1244-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1244-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1244-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1244-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1244-25-0x0000000022650000-0x00000000228AF000-memory.dmp

memory/1244-33-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1244-34-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1244-42-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1244-43-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1244-59-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1244-60-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1244-74-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1244-75-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1244-76-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1244-77-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 02:16

Reported

2024-06-28 02:19

Platform

win11-20240419-en

Max time kernel

91s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.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\kat4B61.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 3572 set thread context of 664 N/A C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe C:\Users\Admin\AppData\Local\Temp\kat4B61.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\kat4B61.tmp N/A
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\kat4B61.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 3572 wrote to memory of 664 N/A C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe C:\Users\Admin\AppData\Local\Temp\kat4B61.tmp
PID 3572 wrote to memory of 664 N/A C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe C:\Users\Admin\AppData\Local\Temp\kat4B61.tmp
PID 3572 wrote to memory of 664 N/A C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe C:\Users\Admin\AppData\Local\Temp\kat4B61.tmp
PID 3572 wrote to memory of 664 N/A C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe C:\Users\Admin\AppData\Local\Temp\kat4B61.tmp
PID 3572 wrote to memory of 664 N/A C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe C:\Users\Admin\AppData\Local\Temp\kat4B61.tmp
PID 3572 wrote to memory of 664 N/A C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe C:\Users\Admin\AppData\Local\Temp\kat4B61.tmp
PID 3572 wrote to memory of 664 N/A C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe C:\Users\Admin\AppData\Local\Temp\kat4B61.tmp
PID 3572 wrote to memory of 664 N/A C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe C:\Users\Admin\AppData\Local\Temp\kat4B61.tmp
PID 664 wrote to memory of 4388 N/A C:\Users\Admin\AppData\Local\Temp\kat4B61.tmp C:\Windows\SysWOW64\cmd.exe
PID 664 wrote to memory of 4388 N/A C:\Users\Admin\AppData\Local\Temp\kat4B61.tmp C:\Windows\SysWOW64\cmd.exe
PID 664 wrote to memory of 4388 N/A C:\Users\Admin\AppData\Local\Temp\kat4B61.tmp C:\Windows\SysWOW64\cmd.exe
PID 4388 wrote to memory of 3404 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4388 wrote to memory of 3404 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4388 wrote to memory of 3404 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe

"C:\Users\Admin\AppData\Local\Temp\4a54e82bb486c9ba176257b58e55458a141e51429dc0a45baf61b2f0ebf420fd.exe"

C:\Users\Admin\AppData\Local\Temp\kat4B61.tmp

C:\Users\Admin\AppData\Local\Temp\kat4B61.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4B61.tmp" & rd /s /q "C:\ProgramData\IDHIIJJJKEGI" & 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 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 41.249.124.192.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 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/3572-0-0x00000000022C0000-0x00000000022C1000-memory.dmp

memory/3572-1-0x0000000003F90000-0x00000000040A0000-memory.dmp

memory/664-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/664-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/664-10-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat4B61.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/3572-9-0x0000000000400000-0x000000000058E000-memory.dmp

memory/664-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/664-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/664-27-0x000000002D180000-0x000000002D3DF000-memory.dmp

memory/664-42-0x0000000000400000-0x0000000000648000-memory.dmp

memory/664-43-0x0000000000400000-0x0000000000648000-memory.dmp

memory/664-59-0x0000000000400000-0x0000000000648000-memory.dmp

memory/664-60-0x0000000000400000-0x0000000000648000-memory.dmp

memory/664-71-0x0000000000400000-0x0000000000648000-memory.dmp

memory/664-72-0x0000000000400000-0x0000000000648000-memory.dmp

memory/664-73-0x0000000000400000-0x0000000000648000-memory.dmp