stealc | 70cecb33bc91299aa46b3999ceb09055c3d3d011f89dabd3e516d44572c6197f

General

Target

70cecb33bc91299aa46b3999ceb09055c3d3d011f89dabd3e516d44572c6197f.exe
Size

1.6MB
MD5

8f59e6639e216e56946fd604ff032ef2
SHA1

042dcf2d433395a5a7c0d832e3b6c038daddb9d1
SHA256

70cecb33bc91299aa46b3999ceb09055c3d3d011f89dabd3e516d44572c6197f
SHA512

3b50f9d5a30f6125fe385c6b0d5232dc6a479af3cf02af57b9888ade58caa0d1c5b7bb5b68023574ce503397f31969856285e13f04d50b2debaf428c8ba5f932
SSDEEP

24576:spM5863IGfTAVpalBAUfMxVVtes12FxwojKr98YGeGG9i:spQLYkTYp6BAUkxVVChjHZQs

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://t.me/r8z0l

https://steamcommunity.com/profiles/76561199698764354

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Signatures

Detect Vidar Stealer 16 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/516-2-0x0000000002B40000-0x0000000002C50000-memory.dmp	family_vidar_v7
behavioral1/memory/4620-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4620-9-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4620-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4620-20-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4620-21-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4620-31-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4620-32-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4620-40-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4620-41-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4620-57-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4620-64-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4620-75-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4620-76-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4620-77-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4620-78-0x0000000000400000-0x0000000000648000-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:

katDACF.tmp

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation katDACF.tmp
Executes dropped EXE 1 IoCs

Processes:

katDACF.tmp

pid process

4620 katDACF.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

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation	katDACF.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

70cecb33bc91299aa46b3999ceb09055c3d3d011f89dabd3e516d44572c6197f.exe

description	pid	process	target process
PID 516 set thread context of 4620	516	70cecb33bc91299aa46b3999ceb09055c3d3d011f89dabd3e516d44572c6197f.exe	katDACF.tmp

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.

Query Registry
T1012

System Information Discovery
T1082

Processes:

katDACF.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString katDACF.tmp
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

928 timeout.exe

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

pid	process
928	timeout.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

katDACF.tmp

pid	process
4620	katDACF.tmp
4620	katDACF.tmp
4620	katDACF.tmp
4620	katDACF.tmp
4620	katDACF.tmp
4620	katDACF.tmp
4620	katDACF.tmp
4620	katDACF.tmp
4620	katDACF.tmp
4620	katDACF.tmp

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

70cecb33bc91299aa46b3999ceb09055c3d3d011f89dabd3e516d44572c6197f.exekatDACF.tmpcmd.exe

description	pid	process	target process
PID 516 wrote to memory of 4620	516	70cecb33bc91299aa46b3999ceb09055c3d3d011f89dabd3e516d44572c6197f.exe	katDACF.tmp
PID 516 wrote to memory of 4620	516	70cecb33bc91299aa46b3999ceb09055c3d3d011f89dabd3e516d44572c6197f.exe	katDACF.tmp
PID 516 wrote to memory of 4620	516	70cecb33bc91299aa46b3999ceb09055c3d3d011f89dabd3e516d44572c6197f.exe	katDACF.tmp
PID 516 wrote to memory of 4620	516	70cecb33bc91299aa46b3999ceb09055c3d3d011f89dabd3e516d44572c6197f.exe	katDACF.tmp
PID 516 wrote to memory of 4620	516	70cecb33bc91299aa46b3999ceb09055c3d3d011f89dabd3e516d44572c6197f.exe	katDACF.tmp
PID 516 wrote to memory of 4620	516	70cecb33bc91299aa46b3999ceb09055c3d3d011f89dabd3e516d44572c6197f.exe	katDACF.tmp
PID 516 wrote to memory of 4620	516	70cecb33bc91299aa46b3999ceb09055c3d3d011f89dabd3e516d44572c6197f.exe	katDACF.tmp
PID 516 wrote to memory of 4620	516	70cecb33bc91299aa46b3999ceb09055c3d3d011f89dabd3e516d44572c6197f.exe	katDACF.tmp
PID 4620 wrote to memory of 3544	4620	katDACF.tmp	cmd.exe
PID 4620 wrote to memory of 3544	4620	katDACF.tmp	cmd.exe
PID 4620 wrote to memory of 3544	4620	katDACF.tmp	cmd.exe
PID 3544 wrote to memory of 928	3544	cmd.exe	timeout.exe
PID 3544 wrote to memory of 928	3544	cmd.exe	timeout.exe
PID 3544 wrote to memory of 928	3544	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\70cecb33bc91299aa46b3999ceb09055c3d3d011f89dabd3e516d44572c6197f.exe
"C:\Users\Admin\AppData\Local\Temp\70cecb33bc91299aa46b3999ceb09055c3d3d011f89dabd3e516d44572c6197f.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:516

C:\Users\Admin\AppData\Local\Temp\katDACF.tmp
C:\Users\Admin\AppData\Local\Temp\katDACF.tmp
2⤵
- Checks computer location settings
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4620

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\katDACF.tmp" & rd /s /q "C:\ProgramData\EHDHDHIECGCA" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:3544

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
4⤵
- Delays execution with timeout.exe
PID:928

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=3508,i,8660989700097327804,17931739887231169645,262144 --variations-seed-version --mojo-platform-channel-handle=2512 /prefetch:3
1⤵
PID:1028

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=3484,i,8660989700097327804,17931739887231169645,262144 --variations-seed-version --mojo-platform-channel-handle=3756 /prefetch:8
1⤵
PID:2324

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

3

T1552

Credentials In Files

3

T1552.001

Discovery

Query Registry

3

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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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\katDACF.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/516-6-0x0000000000400000-0x0000000000594000-memory.dmp

Filesize
1.6MB

Download
memory/516-2-0x0000000002B40000-0x0000000002C50000-memory.dmp

Filesize
1.1MB

Download
memory/516-0-0x0000000000890000-0x0000000000891000-memory.dmp

Filesize
4KB

Download
memory/4620-40-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4620-41-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4620-21-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4620-23-0x000000001DC80000-0x000000001DEDF000-memory.dmp

Filesize
2.4MB

Download
memory/4620-31-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4620-32-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4620-9-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4620-20-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4620-57-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4620-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4620-64-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4620-75-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4620-76-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4620-77-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4620-78-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4620-10-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads