Malware Analysis Report

2024-11-30 21:50

Sample ID 230206-jtb3nacf62
Target 094506dab589aa3933fe28379d607e4e.bin
SHA256 e566072b5e8377bbb7697223a6a43161505955bed00c84ec3371df1782f8b28a
Tags
purecrypter vidar 886 downloader loader persistence stealer discovery spyware
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

e566072b5e8377bbb7697223a6a43161505955bed00c84ec3371df1782f8b28a

Threat Level: Known bad

The file 094506dab589aa3933fe28379d607e4e.bin was found to be: Known bad.

Malicious Activity Summary

purecrypter vidar 886 downloader loader persistence stealer discovery spyware

Detect PureCrypter injector

Vidar

PureCrypter

Reads user/profile data of web browsers

Checks computer location settings

Loads dropped DLL

Accesses 2FA software files, possible credential harvesting

Checks installed software on the system

Adds Run key to start application

Accesses cryptocurrency files/wallets, possible credential harvesting

Suspicious use of SetThreadContext

Program crash

Enumerates physical storage devices

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-02-06 07:57

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-02-06 07:57

Reported

2023-02-06 07:59

Platform

win7-20221111-en

Max time kernel

98s

Max time network

99s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe"

Signatures

Detect PureCrypter injector

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

PureCrypter

loader downloader purecrypter

Vidar

stealer vidar

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\Mkfexvjrq = "\"C:\\Users\\Admin\\AppData\\Roaming\\Ngueozpsjs\\Mkfexvjrq.exe\"" C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 852 wrote to memory of 700 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 852 wrote to memory of 700 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 852 wrote to memory of 700 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 852 wrote to memory of 700 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 852 wrote to memory of 588 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe
PID 852 wrote to memory of 588 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe
PID 852 wrote to memory of 588 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe
PID 852 wrote to memory of 588 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe
PID 852 wrote to memory of 588 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe
PID 852 wrote to memory of 588 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe
PID 852 wrote to memory of 588 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe
PID 852 wrote to memory of 588 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe
PID 852 wrote to memory of 588 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe
PID 852 wrote to memory of 588 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe

Processes

C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe

"C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==

C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe

C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 t.me udp
NL 149.154.167.99:443 t.me tcp
NL 149.154.167.99:443 t.me tcp
NL 149.154.167.99:443 t.me tcp
NL 149.154.167.99:443 t.me tcp
US 8.8.8.8:53 steamcommunity.com udp
DE 49.12.239.21:80 tcp
DE 49.12.239.21:80 tcp

Files

memory/852-54-0x0000000000A00000-0x0000000000C8C000-memory.dmp

memory/852-55-0x00000000049C0000-0x0000000004C4A000-memory.dmp

memory/852-56-0x0000000075FF1000-0x0000000075FF3000-memory.dmp

memory/700-57-0x0000000000000000-mapping.dmp

memory/700-59-0x000000006FEE0000-0x000000007048B000-memory.dmp

memory/700-60-0x000000006FEE0000-0x000000007048B000-memory.dmp

memory/700-61-0x000000006FEE0000-0x000000007048B000-memory.dmp

memory/852-62-0x0000000004580000-0x00000000045EE000-memory.dmp

memory/588-63-0x0000000000400000-0x0000000000471000-memory.dmp

memory/588-64-0x0000000000400000-0x0000000000471000-memory.dmp

memory/588-66-0x0000000000400000-0x0000000000471000-memory.dmp

memory/588-68-0x0000000000400000-0x0000000000471000-memory.dmp

memory/588-70-0x0000000000400000-0x0000000000471000-memory.dmp

memory/588-72-0x0000000000400000-0x0000000000471000-memory.dmp

memory/588-73-0x000000000043211C-mapping.dmp

memory/588-75-0x0000000000400000-0x0000000000471000-memory.dmp

memory/588-76-0x0000000000400000-0x0000000000471000-memory.dmp

memory/588-78-0x0000000000400000-0x0000000000471000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-02-06 07:57

Reported

2023-02-06 07:59

Platform

win10v2004-20220812-en

Max time kernel

87s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe"

Signatures

Vidar

stealer vidar

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe N/A

Reads user/profile data of web browsers

spyware stealer

Accesses 2FA software files, possible credential harvesting

spyware stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Mkfexvjrq = "\"C:\\Users\\Admin\\AppData\\Roaming\\Ngueozpsjs\\Mkfexvjrq.exe\"" C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe N/A

Checks installed software on the system

discovery

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\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4128 wrote to memory of 520 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 4128 wrote to memory of 520 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 4128 wrote to memory of 520 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 4128 wrote to memory of 3848 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe
PID 4128 wrote to memory of 3848 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe
PID 4128 wrote to memory of 3848 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe
PID 4128 wrote to memory of 3848 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe
PID 4128 wrote to memory of 3848 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe
PID 4128 wrote to memory of 3848 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe
PID 4128 wrote to memory of 3848 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe
PID 4128 wrote to memory of 3848 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe
PID 4128 wrote to memory of 3848 N/A C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe

Processes

C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe

"C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==

C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe

C:\Users\Admin\AppData\Local\Temp\8b45ddb55c917429dad237eac7bce95e29808c4157d098956144d19f247a1c0d.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3848 -ip 3848

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3848 -s 1804

Network

Country Destination Domain Proto
US 8.8.8.8:53 t.me udp
NL 149.154.167.99:443 t.me tcp
FI 65.109.7.48:80 65.109.7.48 tcp
US 93.184.220.29:80 tcp
NL 8.253.208.113:80 tcp
NL 8.253.208.113:80 tcp
NL 8.253.208.113:80 tcp
NL 8.253.208.113:80 tcp
NL 104.80.225.205:443 tcp

Files

memory/4128-132-0x0000000000C20000-0x0000000000EAC000-memory.dmp

memory/4128-133-0x0000000005B10000-0x0000000005B32000-memory.dmp

memory/520-134-0x0000000000000000-mapping.dmp

memory/520-135-0x00000000049D0000-0x0000000004A06000-memory.dmp

memory/520-136-0x0000000005080000-0x00000000056A8000-memory.dmp

memory/520-137-0x00000000057B0000-0x0000000005816000-memory.dmp

memory/520-138-0x0000000005950000-0x00000000059B6000-memory.dmp

memory/520-139-0x0000000005E70000-0x0000000005E8E000-memory.dmp

memory/520-140-0x00000000075B0000-0x0000000007C2A000-memory.dmp

memory/520-141-0x0000000006490000-0x00000000064AA000-memory.dmp

memory/3848-142-0x0000000000000000-mapping.dmp

memory/3848-143-0x0000000000400000-0x0000000000471000-memory.dmp

memory/3848-144-0x0000000000400000-0x0000000000471000-memory.dmp

memory/3848-145-0x0000000000400000-0x0000000000471000-memory.dmp

memory/3848-146-0x0000000000400000-0x0000000000471000-memory.dmp

memory/3848-147-0x0000000051690000-0x0000000051783000-memory.dmp

C:\ProgramData\nss3.dll

MD5 1cc453cdf74f31e4d913ff9c10acdde2
SHA1 6e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
SHA512 dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

C:\ProgramData\mozglue.dll

MD5 c8fd9be83bc728cc04beffafc2907fe9
SHA1 95ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
SHA512 fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

memory/3848-167-0x0000000000400000-0x0000000000471000-memory.dmp