stealc | 07be352dde09851de71ce7c763537e2b5c567e52fd161304cbaa54895dcd5c8f

Analysis

max time kernel
132s
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, 01:01

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General

Target
07be352dde09851de71ce7c763537e2b5c567e52fd161304cbaa54895dcd5c8f.exe
Size 2.2MB
Sample240630-bdlcds1crb
SHA256 07be352dde09851de71ce7c763537e2b5c567e52fd161304cbaa54895dcd5c8f
MD5 6a605bfcf8816ab1a6e21238fcb55747
SHA1 3e3a35e578c8a3faf88abe8fd7791ecc4bca538d
SHA512 a6f7c16fe752905dd9305ba7e46b0cc5de054f1dafd8ba836f61a50781f5f089bcf2e49961fa886de4efc2c6c972313bfd2770558131c360bcb8b2823ea1db0a
SSDEEP 49152:qpjNvr9ySAOmw4dHHO+SASagXkJr4MDkUwm:qpjNp7p4dHH8n5A
MD5 SHA1 SHA512 SSDEEP

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 16 IoCs

stealer

resource	yara_rule
behavioral2/memory/3648-2-0x0000000004030000-0x0000000004140000-memory.dmp	family_vidar_v7
behavioral2/memory/2460-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2460-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2460-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2460-22-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2460-23-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2460-40-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2460-41-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2460-50-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2460-57-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2460-65-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2460-66-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2460-77-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2460-78-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2460-79-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2460-80-0x0000000000400000-0x0000000000648000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	katEC15.tmp

Executes dropped EXE 1 IoCs

pid	Process
2460	katEC15.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

description	pid	Process	procid_target
PID 3648 set thread context of 2460	3648	07be352dde09851de71ce7c763537e2b5c567e52fd161304cbaa54895dcd5c8f.exe	89

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 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	katEC15.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	katEC15.tmp

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2168	timeout.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\2796BAE63F1801E277261BA0D77770028F20EEE4	katEC15.tmp
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\2796BAE63F1801E277261BA0D77770028F20EEE4\Blob = 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	katEC15.tmp

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2460	katEC15.tmp
2460	katEC15.tmp
2460	katEC15.tmp
2460	katEC15.tmp
2460	katEC15.tmp
2460	katEC15.tmp
2460	katEC15.tmp
2460	katEC15.tmp
2460	katEC15.tmp
2460	katEC15.tmp
2460	katEC15.tmp
2460	katEC15.tmp
2460	katEC15.tmp
2460	katEC15.tmp

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3648 wrote to memory of 2460	3648	07be352dde09851de71ce7c763537e2b5c567e52fd161304cbaa54895dcd5c8f.exe	89
PID 3648 wrote to memory of 2460	3648	07be352dde09851de71ce7c763537e2b5c567e52fd161304cbaa54895dcd5c8f.exe	89
PID 3648 wrote to memory of 2460	3648	07be352dde09851de71ce7c763537e2b5c567e52fd161304cbaa54895dcd5c8f.exe	89
PID 3648 wrote to memory of 2460	3648	07be352dde09851de71ce7c763537e2b5c567e52fd161304cbaa54895dcd5c8f.exe	89
PID 3648 wrote to memory of 2460	3648	07be352dde09851de71ce7c763537e2b5c567e52fd161304cbaa54895dcd5c8f.exe	89
PID 3648 wrote to memory of 2460	3648	07be352dde09851de71ce7c763537e2b5c567e52fd161304cbaa54895dcd5c8f.exe	89
PID 3648 wrote to memory of 2460	3648	07be352dde09851de71ce7c763537e2b5c567e52fd161304cbaa54895dcd5c8f.exe	89
PID 3648 wrote to memory of 2460	3648	07be352dde09851de71ce7c763537e2b5c567e52fd161304cbaa54895dcd5c8f.exe	89
PID 2460 wrote to memory of 1600	2460	katEC15.tmp	99
PID 2460 wrote to memory of 1600	2460	katEC15.tmp	99
PID 2460 wrote to memory of 1600	2460	katEC15.tmp	99
PID 1600 wrote to memory of 2168	1600	cmd.exe	101
PID 1600 wrote to memory of 2168	1600	cmd.exe	101
PID 1600 wrote to memory of 2168	1600	cmd.exe	101

C:\Users\Admin\AppData\Local\Temp\07be352dde09851de71ce7c763537e2b5c567e52fd161304cbaa54895dcd5c8f.exe
"C:\Users\Admin\AppData\Local\Temp\07be352dde09851de71ce7c763537e2b5c567e52fd161304cbaa54895dcd5c8f.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3648
- C:\Users\Admin\AppData\Local\Temp\katEC15.tmp
  C:\Users\Admin\AppData\Local\Temp\katEC15.tmp
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Checks processor information in registry
  - Modifies system certificate store
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2460
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\katEC15.tmp" & rd /s /q "C:\ProgramData\DGHDHIDGHIDG" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1600
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:2168

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=1032,i,13640054265074968359,8146127767143474550,262144 --variations-seed-version --mojo-platform-channel-handle=3816 /prefetch:8
1⤵
PID:2012

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=3504,i,13640054265074968359,8146127767143474550,262144 --variations-seed-version --mojo-platform-channel-handle=2376 /prefetch:3
1⤵
PID:4016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Subvert Trust Controls

T1553

Install Root Certificate

T1553.004

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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

SCT Auditing Pending Reports

Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\SCT Auditing Pending Reports
Size 2B
SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
MD5 d751713988987e9331980363e24189ce
SHA1 97d170e1550eee4afc0af065b78cda302a97674c
SHA512 b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af
MD5 SHA1 SHA512

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Sdch Dictionaries

Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\Sdch Dictionaries
Size 40B
SHA256 6028bd681dbf11a0a58dde8a0cd884115c04caa59d080ba51bde1b086ce0079d
MD5 20d4b8fa017a12a108c87f540836e250
SHA1 1ac617fac131262b6d3ce1f52f5907e31d5f6f00
SHA512 507b2b8a8a168ff8f2bdafa5d9d341c44501a5f17d9f63f3d43bd586bc9e8ae33221887869fa86f845b7d067cb7d2a7009efd71dda36e03a40a74fee04b86856
MD5 SHA1 SHA512

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katEC15.tmp

Path C:\Users\Admin\AppData\Local\Temp\katEC15.tmp
Size 861KB
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
SSDEEP 24576:o0ESdQpglO1CxDyawn27h+9hrlgKQY9SGcZwCdTp:o0RIglO1CuL9VNcaCd9
MD5 SHA1 SHA512 SSDEEP

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memory/2460-65-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/2460-50-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/2460-80-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/2460-4-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/2460-22-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/2460-23-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/2460-25-0x0000000022750000-0x00000000229AF000-memory.dmp

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memory/2460-40-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/2460-41-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/2460-10-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/2460-8-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/2460-57-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/2460-79-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/2460-66-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/2460-77-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/2460-78-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/3648-0-0x0000000000800000-0x0000000000801000-memory.dmp

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memory/3648-9-0x0000000000400000-0x0000000000635000-memory.dmp

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memory/3648-2-0x0000000004030000-0x0000000004140000-memory.dmp

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