Malware Analysis Report

2024-09-11 16:55

Sample ID 240614-hmhfessgln
Target 4c3f0027d2e0e9c8664bf102fc2840e4.exe
SHA256 5f5d2d0921c6917bd07ea44fbfef38efc470942736a13283ba4e15df051c0f38
Tags
stealc vidar discovery spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

5f5d2d0921c6917bd07ea44fbfef38efc470942736a13283ba4e15df051c0f38

Threat Level: Known bad

The file 4c3f0027d2e0e9c8664bf102fc2840e4.exe was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Vidar

Stealc

Detect Vidar Stealer

Downloads MZ/PE file

Reads user/profile data of web browsers

Checks computer location settings

Reads user/profile data of local email clients

Reads data files stored by FTP clients

Checks installed software on the system

Accesses cryptocurrency files/wallets, possible credential harvesting

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Delays execution with timeout.exe

Checks processor information in registry

Modifies system certificate store

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Subvert Trust Controls
T1553
Install Root Certificate
T1553.004
Modify Registry
T1112
Credential Access
TA0006
Unsecured Credentials
T1552
Credentials In Files
T1552.001
Discovery
TA0007
Query Registry
T1012
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Data from Local System
T1005
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-14 06:51

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-14 06:51

Reported

2024-06-14 06:53

Platform

win7-20240221-en

Max time kernel

120s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe"

Signatures

Detect Vidar Stealer

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

Stealc

stealer stealc

Vidar

stealer vidar

Downloads MZ/PE file

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of local email 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

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\4c3f0027d2e0e9c8664bf102fc2840e4.exe N/A

Delays execution with timeout.exe

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

Modifies system certificate store

evasion spyware trojan
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25 C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe N/A
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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 C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe N/A
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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 C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1812 wrote to memory of 1712 N/A C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe C:\Windows\SysWOW64\cmd.exe
PID 1812 wrote to memory of 1712 N/A C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe C:\Windows\SysWOW64\cmd.exe
PID 1812 wrote to memory of 1712 N/A C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe C:\Windows\SysWOW64\cmd.exe
PID 1812 wrote to memory of 1712 N/A C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe C:\Windows\SysWOW64\cmd.exe
PID 1712 wrote to memory of 788 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1712 wrote to memory of 788 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1712 wrote to memory of 788 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1712 wrote to memory of 788 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe

"C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\DGHDHIDGHIDG" & 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
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
BE 104.68.92.92:443 steamcommunity.com tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 tcp
FI 65.109.240.138:443 tcp
FI 65.109.240.138:443 tcp
FI 65.109.240.138:443 tcp
FI 65.109.240.138:443 tcp
FI 65.109.240.138:443 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
RU 5.42.65.116:80 tcp
RU 5.42.65.116:80 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
RU 5.42.65.116:80 tcp
RU 5.42.65.116:80 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp

Files

memory/1812-4-0x0000000000110000-0x0000000000111000-memory.dmp

memory/1812-2-0x0000000000110000-0x0000000000111000-memory.dmp

memory/1812-0-0x0000000000110000-0x0000000000111000-memory.dmp

memory/1812-7-0x0000000000120000-0x0000000000121000-memory.dmp

memory/1812-5-0x0000000000120000-0x0000000000121000-memory.dmp

memory/1812-9-0x0000000000120000-0x0000000000121000-memory.dmp

memory/1812-29-0x0000000000160000-0x0000000000161000-memory.dmp

memory/1812-27-0x0000000000160000-0x0000000000161000-memory.dmp

memory/1812-24-0x0000000000150000-0x0000000000151000-memory.dmp

memory/1812-22-0x0000000000150000-0x0000000000151000-memory.dmp

memory/1812-19-0x0000000000140000-0x0000000000141000-memory.dmp

memory/1812-17-0x0000000000140000-0x0000000000141000-memory.dmp

memory/1812-14-0x0000000000130000-0x0000000000131000-memory.dmp

memory/1812-12-0x0000000000130000-0x0000000000131000-memory.dmp

memory/1812-32-0x00000000014E2000-0x000000000190A000-memory.dmp

memory/1812-31-0x00000000012A0000-0x0000000002065000-memory.dmp

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

MD5 49aebf8cbd62d92ac215b2923fb1b9f5
SHA1 1723be06719828dda65ad804298d0431f6aff976
SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512 bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

C:\Users\Admin\AppData\Local\Temp\Tar1B26.tmp

MD5 4ea6026cf93ec6338144661bf1202cd1
SHA1 a1dec9044f750ad887935a01430bf49322fbdcb7
SHA256 8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
SHA512 6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

MD5 90180ae58020211d6c968e73c118ccde
SHA1 c882c3f64e5118d9bcebcfba05f5460e8c5d0333
SHA256 70574259f41fc0283a73eccf1773018d48844d64055d4bb04859b77b11f9f5cd
SHA512 8e09afdc98314f001f9ed01cfed1ed9277f0bbc43f01c9d08128952fec7ff60176f48227d403be81769b3ffa22b2b6ab1ae329c136010338c612d96aad850084

memory/1812-222-0x000000002CCA0000-0x000000002CEFF000-memory.dmp

memory/1812-424-0x00000000012A0000-0x0000000002065000-memory.dmp

memory/1812-445-0x00000000012A0000-0x0000000002065000-memory.dmp

memory/1812-546-0x00000000014E2000-0x000000000190A000-memory.dmp

memory/1812-547-0x00000000012A0000-0x0000000002065000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-14 06:51

Reported

2024-06-14 06:53

Platform

win10v2004-20240508-en

Max time kernel

143s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe"

Signatures

Detect Vidar Stealer

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

Stealc

stealer stealc

Vidar

stealer vidar

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe N/A

Reads data files stored by FTP clients

spyware stealer

Checks installed software on the system

discovery

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\4c3f0027d2e0e9c8664bf102fc2840e4.exe N/A

Delays execution with timeout.exe

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 456 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe C:\Windows\SysWOW64\cmd.exe
PID 456 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe C:\Windows\SysWOW64\cmd.exe
PID 456 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe C:\Windows\SysWOW64\cmd.exe
PID 4824 wrote to memory of 2172 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4824 wrote to memory of 2172 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4824 wrote to memory of 2172 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe

"C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe"

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4084,i,11266875042087428226,16669718873272757238,262144 --variations-seed-version --mojo-platform-channel-handle=3444 /prefetch:8

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\4c3f0027d2e0e9c8664bf102fc2840e4.exe" & rd /s /q "C:\ProgramData\FCAEBFIJKEBG" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
US 8.8.8.8:53 t.me udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 steamcommunity.com udp

Files

memory/456-1-0x0000000000FE0000-0x0000000000FE1000-memory.dmp

memory/456-4-0x0000000003790000-0x0000000003791000-memory.dmp

memory/456-6-0x00000000000C0000-0x0000000000E85000-memory.dmp

memory/456-3-0x0000000003780000-0x0000000003781000-memory.dmp

memory/456-2-0x0000000000FF0000-0x0000000000FF1000-memory.dmp

memory/456-0-0x0000000000FD0000-0x0000000000FD1000-memory.dmp

memory/456-8-0x0000000000302000-0x000000000072A000-memory.dmp

memory/456-5-0x00000000037A0000-0x00000000037A1000-memory.dmp

memory/456-10-0x0000000000302000-0x000000000072A000-memory.dmp