Malware Analysis Report

2024-09-11 16:54

Sample ID 240614-chvmas1fjf
Target df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe
SHA256 df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db
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

df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db

Threat Level: Known bad

The file df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Vidar

Detect Vidar Stealer

Stealc

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

Detects Windows executables referencing non-Windows User-Agents

Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs.

Detect binaries embedding considerable number of MFA browser extension IDs.

Detects executables containing potential Windows Defender anti-emulation checks

Downloads MZ/PE file

Reads user/profile data of local email clients

Reads data files stored by FTP clients

Reads user/profile data of web browsers

Checks computer location settings

Checks installed software on the system

Accesses cryptocurrency files/wallets, possible credential harvesting

Suspicious use of SetThreadContext

Enumerates physical storage devices

Program crash

Unsigned PE

Delays execution with timeout.exe

Suspicious use of WriteProcessMemory

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
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 02:05

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-14 02:05

Reported

2024-06-14 02:07

Platform

win7-20240508-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe"

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1192 wrote to memory of 1104 N/A C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe C:\Windows\SysWOW64\WerFault.exe
PID 1192 wrote to memory of 1104 N/A C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe C:\Windows\SysWOW64\WerFault.exe
PID 1192 wrote to memory of 1104 N/A C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe C:\Windows\SysWOW64\WerFault.exe
PID 1192 wrote to memory of 1104 N/A C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe

"C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1192 -s 144

Network

N/A

Files

memory/1192-0-0x0000000000230000-0x0000000000231000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-14 02:05

Reported

2024-06-14 02:07

Platform

win10v2004-20240611-en

Max time kernel

133s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.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
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
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
N/A N/A N/A N/A

Stealc

stealer stealc

Vidar

stealer vidar

Detect binaries embedding considerable number of MFA browser extension IDs.

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
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
N/A N/A N/A N/A
N/A N/A N/A N/A

Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs.

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
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
N/A N/A N/A N/A
N/A N/A N/A N/A

Detects Windows executables referencing non-Windows User-Agents

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
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
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
N/A N/A N/A N/A

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

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
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
N/A N/A N/A N/A
N/A N/A N/A N/A

Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

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
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
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
N/A N/A N/A N/A

Detects executables containing potential Windows Defender anti-emulation checks

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
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
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
N/A N/A N/A N/A

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2188 set thread context of 3164 N/A C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

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:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.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:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2188 wrote to memory of 3480 N/A C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2188 wrote to memory of 3480 N/A C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2188 wrote to memory of 3480 N/A C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2188 wrote to memory of 1992 N/A C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2188 wrote to memory of 1992 N/A C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2188 wrote to memory of 1992 N/A C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2188 wrote to memory of 3164 N/A C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2188 wrote to memory of 3164 N/A C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2188 wrote to memory of 3164 N/A C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2188 wrote to memory of 3164 N/A C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2188 wrote to memory of 3164 N/A C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2188 wrote to memory of 3164 N/A C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2188 wrote to memory of 3164 N/A C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2188 wrote to memory of 3164 N/A C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2188 wrote to memory of 3164 N/A C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3164 wrote to memory of 4400 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\cmd.exe
PID 3164 wrote to memory of 4400 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\cmd.exe
PID 3164 wrote to memory of 4400 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\cmd.exe
PID 4400 wrote to memory of 4768 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4400 wrote to memory of 4768 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4400 wrote to memory of 4768 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe

"C:\Users\Admin\AppData\Local\Temp\df5fe65af1f6f93e6fa38aa46f53d3f6a17942cad637c450a61380d3024504db.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.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 --field-trial-handle=1028,i,4778049104057176787,6631751660692402210,262144 --variations-seed-version --mojo-platform-channel-handle=3980 /prefetch:8

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

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --field-trial-handle=3124,i,4778049104057176787,6631751660692402210,262144 --variations-seed-version --mojo-platform-channel-handle=4312 /prefetch:3

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\FHCBGDAAFBKE" & 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
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
US 8.8.8.8:53 240.143.123.92.in-addr.arpa udp
US 8.8.8.8:53 41.249.124.192.in-addr.arpa udp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 58.251.201.195.in-addr.arpa udp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 tcp
DE 195.201.251.58:9000 tcp
DE 195.201.251.58:9000 tcp
DE 195.201.251.58:9000 tcp
DE 195.201.251.58:9000 tcp
DE 195.201.251.58:9000 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 17.14.97.104.in-addr.arpa udp
NL 52.111.243.30:443 tcp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp

Files

memory/2188-0-0x0000000003220000-0x0000000003221000-memory.dmp

memory/3164-1-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3164-3-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3164-5-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3164-17-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3164-18-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3164-20-0x000000001B950000-0x000000001BBAF000-memory.dmp

memory/3164-28-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3164-29-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3164-37-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3164-38-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3164-54-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\SCT Auditing Pending Reports

MD5 d751713988987e9331980363e24189ce
SHA1 97d170e1550eee4afc0af065b78cda302a97674c
SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
SHA512 b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

memory/3164-61-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3164-75-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3164-76-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\Sdch Dictionaries

MD5 20d4b8fa017a12a108c87f540836e250
SHA1 1ac617fac131262b6d3ce1f52f5907e31d5f6f00
SHA256 6028bd681dbf11a0a58dde8a0cd884115c04caa59d080ba51bde1b086ce0079d
SHA512 507b2b8a8a168ff8f2bdafa5d9d341c44501a5f17d9f63f3d43bd586bc9e8ae33221887869fa86f845b7d067cb7d2a7009efd71dda36e03a40a74fee04b86856