stealc | 16a0507068a23fe21f4bc8f70d7f91679ff3fa4b2a30d345bd341cf172dcbcb7

Analysis

max time kernel
139s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30-06-2024 04:40

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General

Target

16a0507068a23fe21f4bc8f70d7f91679ff3fa4b2a30d345bd341cf172dcbcb7.exe
Size

2.2MB
MD5

2e88b95a6e42293dfca44927cccdd33d
SHA1

7456fab6cc700fcdc39a2d0062611af607816b5f
SHA256

16a0507068a23fe21f4bc8f70d7f91679ff3fa4b2a30d345bd341cf172dcbcb7
SHA512

7ca226a301ee22fee544c6b759e7afd5ae84b3c67d1d3176a675a02c32bd8af576738669c9e3c2a220ae7f43e10da98b6f635009e0579bf50fa9bcd25c70c7b6
SSDEEP

49152:qpjNvr9ySAOmw4dHHO+SASagXkJr4MDkUwm:qpjNp7p4dHH8n5A

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 15 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/1744-1-0x00000000041E0000-0x00000000042F0000-memory.dmp	family_vidar_v7
behavioral1/memory/3572-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3572-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3572-9-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3572-22-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3572-23-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3572-40-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3572-41-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3572-50-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3572-57-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3572-65-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3572-66-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3572-77-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3572-78-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3572-79-0x0000000000400000-0x0000000000648000-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:

katF59B.tmp

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation katF59B.tmp
Executes dropped EXE 1 IoCs

Processes:

katF59B.tmp

pid process

3572 katF59B.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:

16a0507068a23fe21f4bc8f70d7f91679ff3fa4b2a30d345bd341cf172dcbcb7.exe

description pid process target process

PID 1744 set thread context of 3572 1744 16a0507068a23fe21f4bc8f70d7f91679ff3fa4b2a30d345bd341cf172dcbcb7.exe katF59B.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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	katF59B.tmp

description	pid	process	target process
PID 1744 set thread context of 3572	1744	16a0507068a23fe21f4bc8f70d7f91679ff3fa4b2a30d345bd341cf172dcbcb7.exe	katF59B.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:

katF59B.tmp

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	katF59B.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	katF59B.tmp

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

3428 timeout.exe

pid	process
3428	timeout.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

katF59B.tmp

pid	process
3572	katF59B.tmp
3572	katF59B.tmp
3572	katF59B.tmp
3572	katF59B.tmp
3572	katF59B.tmp
3572	katF59B.tmp
3572	katF59B.tmp
3572	katF59B.tmp
3572	katF59B.tmp
3572	katF59B.tmp
3572	katF59B.tmp
3572	katF59B.tmp
3572	katF59B.tmp
3572	katF59B.tmp
3572	katF59B.tmp
3572	katF59B.tmp

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

16a0507068a23fe21f4bc8f70d7f91679ff3fa4b2a30d345bd341cf172dcbcb7.exekatF59B.tmpcmd.exe

description	pid	process	target process
PID 1744 wrote to memory of 3572	1744	16a0507068a23fe21f4bc8f70d7f91679ff3fa4b2a30d345bd341cf172dcbcb7.exe	katF59B.tmp
PID 1744 wrote to memory of 3572	1744	16a0507068a23fe21f4bc8f70d7f91679ff3fa4b2a30d345bd341cf172dcbcb7.exe	katF59B.tmp
PID 1744 wrote to memory of 3572	1744	16a0507068a23fe21f4bc8f70d7f91679ff3fa4b2a30d345bd341cf172dcbcb7.exe	katF59B.tmp
PID 1744 wrote to memory of 3572	1744	16a0507068a23fe21f4bc8f70d7f91679ff3fa4b2a30d345bd341cf172dcbcb7.exe	katF59B.tmp
PID 1744 wrote to memory of 3572	1744	16a0507068a23fe21f4bc8f70d7f91679ff3fa4b2a30d345bd341cf172dcbcb7.exe	katF59B.tmp
PID 1744 wrote to memory of 3572	1744	16a0507068a23fe21f4bc8f70d7f91679ff3fa4b2a30d345bd341cf172dcbcb7.exe	katF59B.tmp
PID 1744 wrote to memory of 3572	1744	16a0507068a23fe21f4bc8f70d7f91679ff3fa4b2a30d345bd341cf172dcbcb7.exe	katF59B.tmp
PID 1744 wrote to memory of 3572	1744	16a0507068a23fe21f4bc8f70d7f91679ff3fa4b2a30d345bd341cf172dcbcb7.exe	katF59B.tmp
PID 3572 wrote to memory of 3336	3572	katF59B.tmp	cmd.exe
PID 3572 wrote to memory of 3336	3572	katF59B.tmp	cmd.exe
PID 3572 wrote to memory of 3336	3572	katF59B.tmp	cmd.exe
PID 3336 wrote to memory of 3428	3336	cmd.exe	timeout.exe
PID 3336 wrote to memory of 3428	3336	cmd.exe	timeout.exe
PID 3336 wrote to memory of 3428	3336	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\16a0507068a23fe21f4bc8f70d7f91679ff3fa4b2a30d345bd341cf172dcbcb7.exe
"C:\Users\Admin\AppData\Local\Temp\16a0507068a23fe21f4bc8f70d7f91679ff3fa4b2a30d345bd341cf172dcbcb7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1744

C:\Users\Admin\AppData\Local\Temp\katF59B.tmp
C:\Users\Admin\AppData\Local\Temp\katF59B.tmp
2⤵
- Checks computer location settings
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3572

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\katF59B.tmp" & rd /s /q "C:\ProgramData\FBAAAKFCAFII" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:3336

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
4⤵
- Delays execution with timeout.exe
PID:3428

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 --field-trial-handle=3080,i,6576818814118437872,11004518367271063231,262144 --variations-seed-version --mojo-platform-channel-handle=2396 /prefetch:3
1⤵
PID:3768

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=3916,i,6576818814118437872,11004518367271063231,262144 --variations-seed-version --mojo-platform-channel-handle=2388 /prefetch:8
1⤵
PID:4608

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

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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\katF59B.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/1744-0-0x0000000000810000-0x0000000000811000-memory.dmp

Filesize
4KB

Download
memory/1744-1-0x00000000041E0000-0x00000000042F0000-memory.dmp

Filesize
1.1MB

Download
memory/1744-10-0x0000000000400000-0x0000000000635000-memory.dmp

Filesize
2.2MB

Download
memory/3572-40-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3572-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3572-23-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3572-25-0x0000000020240000-0x000000002049F000-memory.dmp

Filesize
2.4MB

Download
memory/3572-9-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3572-41-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3572-50-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3572-22-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3572-57-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3572-65-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3572-66-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3572-77-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3572-78-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3572-79-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3572-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download