stealc | bf424f7a51514c455568df41d22c5a0749c2e8ac08df15312c71d627ff384b98

Analysis

max time kernel
140s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
30-06-2024 02:57

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General

Target

bf424f7a51514c455568df41d22c5a0749c2e8ac08df15312c71d627ff384b98.exe
Size

2.2MB
MD5

fe22582c7e3185ada02dd84217bf3adc
SHA1

a839396ac636ca2d7d7fc9d17942e65e281ca9fa
SHA256

bf424f7a51514c455568df41d22c5a0749c2e8ac08df15312c71d627ff384b98
SHA512

3707b4f07c48548f349992405d76323ed8fc02189f4d5401930d65ea285f609943ad8cb5de9431eb6235ac29dbf543bce76293dbb9a187c105613b00ccb3dd02
SSDEEP

49152:qpjNvr9ySAOmw4VHHO+SASagXkJr4MDkUwm:qpjNp7p4VHH8n5A

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

vidar

https://t.me/g067n

https://steamcommunity.com/profiles/76561199707802586

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Signatures

Detect Vidar Stealer 14 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/3148-1-0x0000000004180000-0x0000000004290000-memory.dmp	family_vidar_v7
behavioral2/memory/4760-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4760-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4760-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4760-22-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4760-23-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4760-24-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4760-41-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4760-42-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4760-58-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4760-65-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4760-79-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4760-80-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4760-81-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

kat2A18.tmp

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation kat2A18.tmp
Executes dropped EXE 1 IoCs

Processes:

kat2A18.tmp

pid process

4760 kat2A18.tmp
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Suspicious use of SetThreadContext 1 IoCs

Processes:

bf424f7a51514c455568df41d22c5a0749c2e8ac08df15312c71d627ff384b98.exe

description pid process target process

PID 3148 set thread context of 4760 3148 bf424f7a51514c455568df41d22c5a0749c2e8ac08df15312c71d627ff384b98.exe kat2A18.tmp
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	kat2A18.tmp

description	pid	process	target process
PID 3148 set thread context of 4760	3148	bf424f7a51514c455568df41d22c5a0749c2e8ac08df15312c71d627ff384b98.exe	kat2A18.tmp

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

kat2A18.tmp

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	kat2A18.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat2A18.tmp

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2160 timeout.exe

pid	process
2160	timeout.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

Processes:

kat2A18.tmp

pid	process
4760	kat2A18.tmp
4760	kat2A18.tmp
4760	kat2A18.tmp
4760	kat2A18.tmp
4760	kat2A18.tmp
4760	kat2A18.tmp
4760	kat2A18.tmp
4760	kat2A18.tmp
4760	kat2A18.tmp
4760	kat2A18.tmp
4760	kat2A18.tmp
4760	kat2A18.tmp
4760	kat2A18.tmp
4760	kat2A18.tmp
4760	kat2A18.tmp
4760	kat2A18.tmp
4760	kat2A18.tmp
4760	kat2A18.tmp
4760	kat2A18.tmp
4760	kat2A18.tmp

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

bf424f7a51514c455568df41d22c5a0749c2e8ac08df15312c71d627ff384b98.exekat2A18.tmpcmd.exe

description	pid	process	target process
PID 3148 wrote to memory of 4760	3148	bf424f7a51514c455568df41d22c5a0749c2e8ac08df15312c71d627ff384b98.exe	kat2A18.tmp
PID 3148 wrote to memory of 4760	3148	bf424f7a51514c455568df41d22c5a0749c2e8ac08df15312c71d627ff384b98.exe	kat2A18.tmp
PID 3148 wrote to memory of 4760	3148	bf424f7a51514c455568df41d22c5a0749c2e8ac08df15312c71d627ff384b98.exe	kat2A18.tmp
PID 3148 wrote to memory of 4760	3148	bf424f7a51514c455568df41d22c5a0749c2e8ac08df15312c71d627ff384b98.exe	kat2A18.tmp
PID 3148 wrote to memory of 4760	3148	bf424f7a51514c455568df41d22c5a0749c2e8ac08df15312c71d627ff384b98.exe	kat2A18.tmp
PID 3148 wrote to memory of 4760	3148	bf424f7a51514c455568df41d22c5a0749c2e8ac08df15312c71d627ff384b98.exe	kat2A18.tmp
PID 3148 wrote to memory of 4760	3148	bf424f7a51514c455568df41d22c5a0749c2e8ac08df15312c71d627ff384b98.exe	kat2A18.tmp
PID 3148 wrote to memory of 4760	3148	bf424f7a51514c455568df41d22c5a0749c2e8ac08df15312c71d627ff384b98.exe	kat2A18.tmp
PID 4760 wrote to memory of 4012	4760	kat2A18.tmp	cmd.exe
PID 4760 wrote to memory of 4012	4760	kat2A18.tmp	cmd.exe
PID 4760 wrote to memory of 4012	4760	kat2A18.tmp	cmd.exe
PID 4012 wrote to memory of 2160	4012	cmd.exe	timeout.exe
PID 4012 wrote to memory of 2160	4012	cmd.exe	timeout.exe
PID 4012 wrote to memory of 2160	4012	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\bf424f7a51514c455568df41d22c5a0749c2e8ac08df15312c71d627ff384b98.exe
"C:\Users\Admin\AppData\Local\Temp\bf424f7a51514c455568df41d22c5a0749c2e8ac08df15312c71d627ff384b98.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3148

C:\Users\Admin\AppData\Local\Temp\kat2A18.tmp
C:\Users\Admin\AppData\Local\Temp\kat2A18.tmp
2⤵
- Checks computer location settings
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4760

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat2A18.tmp" & rd /s /q "C:\ProgramData\DGCGDBGCAAEB" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:4012

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
4⤵
- Delays execution with timeout.exe
PID:2160

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 --no-appcompat-clear --mojo-platform-channel-handle=2176 --field-trial-handle=2252,i,16022092570067181109,3235558581947505669,262144 --variations-seed-version /prefetch:3
1⤵
PID:844

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 --mojo-platform-channel-handle=4388 --field-trial-handle=2252,i,16022092570067181109,3235558581947505669,262144 --variations-seed-version /prefetch:8
1⤵
PID:1948

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\SCT Auditing Pending Reports
Filesize
2B

MD5
d751713988987e9331980363e24189ce

SHA1
97d170e1550eee4afc0af065b78cda302a97674c

SHA256
4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945

SHA512
b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\Sdch Dictionaries
Filesize
40B

MD5
20d4b8fa017a12a108c87f540836e250

SHA1
1ac617fac131262b6d3ce1f52f5907e31d5f6f00

SHA256
6028bd681dbf11a0a58dde8a0cd884115c04caa59d080ba51bde1b086ce0079d

SHA512
507b2b8a8a168ff8f2bdafa5d9d341c44501a5f17d9f63f3d43bd586bc9e8ae33221887869fa86f845b7d067cb7d2a7009efd71dda36e03a40a74fee04b86856

Download Submit
C:\Users\Admin\AppData\Local\Temp\kat2A18.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/3148-0-0x00000000023B0000-0x00000000023B1000-memory.dmp

Filesize
4KB

Download
memory/3148-1-0x0000000004180000-0x0000000004290000-memory.dmp

Filesize
1.1MB

Download
memory/3148-9-0x0000000000400000-0x0000000000635000-memory.dmp

Filesize
2.2MB

Download
memory/4760-26-0x00000000227E0000-0x0000000022A3F000-memory.dmp

Filesize
2.4MB

Download
memory/4760-58-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4760-23-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4760-24-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4760-10-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4760-41-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4760-42-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4760-22-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4760-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4760-65-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4760-79-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4760-80-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4760-81-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4760-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download