Malware Analysis Report

2024-11-16 13:51

Sample ID 240628-bjfn4asfka
Target 3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab
SHA256 3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab

Threat Level: Known bad

The file 3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab 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

Reads data files stored by FTP clients

Executes dropped EXE

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

Delays execution with timeout.exe

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-28 01:10

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 01:10

Reported

2024-06-28 01:12

Platform

win11-20240611-en

Max time kernel

149s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.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\kat351A.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 2684 set thread context of 4004 N/A C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe C:\Users\Admin\AppData\Local\Temp\kat351A.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\kat351A.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat351A.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 2684 wrote to memory of 4004 N/A C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe C:\Users\Admin\AppData\Local\Temp\kat351A.tmp
PID 2684 wrote to memory of 4004 N/A C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe C:\Users\Admin\AppData\Local\Temp\kat351A.tmp
PID 2684 wrote to memory of 4004 N/A C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe C:\Users\Admin\AppData\Local\Temp\kat351A.tmp
PID 2684 wrote to memory of 4004 N/A C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe C:\Users\Admin\AppData\Local\Temp\kat351A.tmp
PID 2684 wrote to memory of 4004 N/A C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe C:\Users\Admin\AppData\Local\Temp\kat351A.tmp
PID 2684 wrote to memory of 4004 N/A C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe C:\Users\Admin\AppData\Local\Temp\kat351A.tmp
PID 2684 wrote to memory of 4004 N/A C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe C:\Users\Admin\AppData\Local\Temp\kat351A.tmp
PID 2684 wrote to memory of 4004 N/A C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe C:\Users\Admin\AppData\Local\Temp\kat351A.tmp
PID 4004 wrote to memory of 4608 N/A C:\Users\Admin\AppData\Local\Temp\kat351A.tmp C:\Windows\SysWOW64\cmd.exe
PID 4004 wrote to memory of 4608 N/A C:\Users\Admin\AppData\Local\Temp\kat351A.tmp C:\Windows\SysWOW64\cmd.exe
PID 4004 wrote to memory of 4608 N/A C:\Users\Admin\AppData\Local\Temp\kat351A.tmp C:\Windows\SysWOW64\cmd.exe
PID 4608 wrote to memory of 2140 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4608 wrote to memory of 2140 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4608 wrote to memory of 2140 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe

"C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe"

C:\Users\Admin\AppData\Local\Temp\kat351A.tmp

C:\Users\Admin\AppData\Local\Temp\kat351A.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat351A.tmp" & rd /s /q "C:\ProgramData\CFHIIJDBKEGI" & 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 24.249.124.192.in-addr.arpa udp
US 8.8.8.8:53 99.167.154.149.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/2684-0-0x00000000024F0000-0x00000000024F1000-memory.dmp

memory/2684-1-0x0000000002980000-0x0000000002A90000-memory.dmp

memory/4004-4-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat351A.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/4004-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2684-9-0x0000000000400000-0x000000000058E000-memory.dmp

memory/4004-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4004-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4004-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4004-27-0x0000000022770000-0x00000000229CF000-memory.dmp

memory/4004-35-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4004-36-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4004-44-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4004-45-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4004-61-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4004-62-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4004-73-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4004-74-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4004-75-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4004-78-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 01:10

Reported

2024-06-28 01:12

Platform

win10v2004-20240611-en

Max time kernel

137s

Max time network

133s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.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-1-5-21-200405930-3877336739-3533750831-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\kat878F.tmp N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat878F.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 1932 set thread context of 1400 N/A C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe C:\Users\Admin\AppData\Local\Temp\kat878F.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\kat878F.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat878F.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 1932 wrote to memory of 1400 N/A C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe C:\Users\Admin\AppData\Local\Temp\kat878F.tmp
PID 1932 wrote to memory of 1400 N/A C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe C:\Users\Admin\AppData\Local\Temp\kat878F.tmp
PID 1932 wrote to memory of 1400 N/A C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe C:\Users\Admin\AppData\Local\Temp\kat878F.tmp
PID 1932 wrote to memory of 1400 N/A C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe C:\Users\Admin\AppData\Local\Temp\kat878F.tmp
PID 1932 wrote to memory of 1400 N/A C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe C:\Users\Admin\AppData\Local\Temp\kat878F.tmp
PID 1932 wrote to memory of 1400 N/A C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe C:\Users\Admin\AppData\Local\Temp\kat878F.tmp
PID 1932 wrote to memory of 1400 N/A C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe C:\Users\Admin\AppData\Local\Temp\kat878F.tmp
PID 1932 wrote to memory of 1400 N/A C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe C:\Users\Admin\AppData\Local\Temp\kat878F.tmp
PID 1400 wrote to memory of 4672 N/A C:\Users\Admin\AppData\Local\Temp\kat878F.tmp C:\Windows\SysWOW64\cmd.exe
PID 1400 wrote to memory of 4672 N/A C:\Users\Admin\AppData\Local\Temp\kat878F.tmp C:\Windows\SysWOW64\cmd.exe
PID 1400 wrote to memory of 4672 N/A C:\Users\Admin\AppData\Local\Temp\kat878F.tmp C:\Windows\SysWOW64\cmd.exe
PID 4672 wrote to memory of 4184 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4672 wrote to memory of 4184 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4672 wrote to memory of 4184 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe

"C:\Users\Admin\AppData\Local\Temp\3b46576f5d0e3f34048476dc197b3749aafcdaaeeb467082d62b0497d60be8ab.exe"

C:\Users\Admin\AppData\Local\Temp\kat878F.tmp

C:\Users\Admin\AppData\Local\Temp\kat878F.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat878F.tmp" & rd /s /q "C:\ProgramData\IECBGIDAEHCG" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 194.61.62.23.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
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 22.249.124.192.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 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
US 8.8.8.8:53 97.17.167.52.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
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 52.182.143.211:443 tcp
US 8.8.8.8:53 183.59.114.20.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
PL 93.184.221.240:80 tcp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp

Files

memory/1932-0-0x00000000021E0000-0x00000000021E1000-memory.dmp

memory/1932-1-0x0000000002990000-0x0000000002AA0000-memory.dmp

memory/1400-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1400-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1400-8-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat878F.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/1932-10-0x0000000000400000-0x000000000058E000-memory.dmp

memory/1400-20-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1400-21-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1400-23-0x0000000022650000-0x00000000228AF000-memory.dmp

memory/1400-31-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1400-32-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1400-40-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1400-41-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1400-57-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1400-58-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1400-69-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1400-71-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1400-72-0x0000000000400000-0x0000000000648000-memory.dmp