stealc | 8ec3fd344b9e38438046160f7cd33666582a1eb6456c9e062bd1e40e24ae5377

General

Target

8ec3fd344b9e38438046160f7cd33666582a1eb6456c9e062bd1e40e24ae5377.exe
Size

1.5MB
MD5

74f9c22c5aca48d0952b8afa3526d7a1
SHA1

88ad613c43bd72cf6aa0b9ee5854d08ac8039dd2
SHA256

8ec3fd344b9e38438046160f7cd33666582a1eb6456c9e062bd1e40e24ae5377
SHA512

0d0b7f8a77b9d3105faedca4f3ab94ad511f000b7a379bea82fed6186043349104e354e3a83f2b39f6f76135dd3e364a69e6a491dcb050a6403a7f6e4da44690
SSDEEP

24576:FQH4MilLLfPSJOUc3ErwoD/k9wokidQrlVSP0p+vMiZOVDtplF:m5KL30OU0ONyw5iqpNUONtx

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

vidar

C2

https://t.me/bu77un

https://steamcommunity.com/profiles/76561199730044335

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.1) Gecko/20100101 Firefox/128.1

Signatures

Detect Vidar Stealer 16 IoCs

stealer

resource	yara_rule
behavioral1/memory/3608-1-0x0000000004070000-0x0000000004183000-memory.dmp	family_vidar_v7
behavioral1/memory/2580-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2580-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2580-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2580-22-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2580-23-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2580-40-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2580-41-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2580-50-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2580-57-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2580-65-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2580-66-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2580-77-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2580-78-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2580-79-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2580-80-0x0000000000400000-0x0000000000648000-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	katE261.tmp

Executes dropped EXE 1 IoCs

pid	Process
2580	katE261.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 3608 set thread context of 2580	3608	8ec3fd344b9e38438046160f7cd33666582a1eb6456c9e062bd1e40e24ae5377.exe	88

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	katE261.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	katE261.tmp

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
404	timeout.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2580	katE261.tmp
2580	katE261.tmp
2580	katE261.tmp
2580	katE261.tmp
2580	katE261.tmp
2580	katE261.tmp
2580	katE261.tmp
2580	katE261.tmp
2580	katE261.tmp
2580	katE261.tmp
2580	katE261.tmp
2580	katE261.tmp
2580	katE261.tmp
2580	katE261.tmp

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3608 wrote to memory of 2580	3608	8ec3fd344b9e38438046160f7cd33666582a1eb6456c9e062bd1e40e24ae5377.exe	88
PID 3608 wrote to memory of 2580	3608	8ec3fd344b9e38438046160f7cd33666582a1eb6456c9e062bd1e40e24ae5377.exe	88
PID 3608 wrote to memory of 2580	3608	8ec3fd344b9e38438046160f7cd33666582a1eb6456c9e062bd1e40e24ae5377.exe	88
PID 3608 wrote to memory of 2580	3608	8ec3fd344b9e38438046160f7cd33666582a1eb6456c9e062bd1e40e24ae5377.exe	88
PID 3608 wrote to memory of 2580	3608	8ec3fd344b9e38438046160f7cd33666582a1eb6456c9e062bd1e40e24ae5377.exe	88
PID 3608 wrote to memory of 2580	3608	8ec3fd344b9e38438046160f7cd33666582a1eb6456c9e062bd1e40e24ae5377.exe	88
PID 3608 wrote to memory of 2580	3608	8ec3fd344b9e38438046160f7cd33666582a1eb6456c9e062bd1e40e24ae5377.exe	88
PID 3608 wrote to memory of 2580	3608	8ec3fd344b9e38438046160f7cd33666582a1eb6456c9e062bd1e40e24ae5377.exe	88
PID 2580 wrote to memory of 4820	2580	katE261.tmp	98
PID 2580 wrote to memory of 4820	2580	katE261.tmp	98
PID 2580 wrote to memory of 4820	2580	katE261.tmp	98
PID 4820 wrote to memory of 404	4820	cmd.exe	100
PID 4820 wrote to memory of 404	4820	cmd.exe	100
PID 4820 wrote to memory of 404	4820	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\8ec3fd344b9e38438046160f7cd33666582a1eb6456c9e062bd1e40e24ae5377.exe
"C:\Users\Admin\AppData\Local\Temp\8ec3fd344b9e38438046160f7cd33666582a1eb6456c9e062bd1e40e24ae5377.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3608
- C:\Users\Admin\AppData\Local\Temp\katE261.tmp
  C:\Users\Admin\AppData\Local\Temp\katE261.tmp
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2580
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\katE261.tmp" & rd /s /q "C:\ProgramData\BKEBFHIJECFI" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4820
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:404

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=2892,i,2607710392823067546,4648797561512801463,262144 --variations-seed-version --mojo-platform-channel-handle=2356 /prefetch:3
1⤵
PID:4324

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=3808,i,2607710392823067546,4648797561512801463,262144 --variations-seed-version --mojo-platform-channel-handle=2928 /prefetch:8
1⤵
PID:3536

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Command and Control

Exfiltration

Impact

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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

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C:\Users\Admin\AppData\Local\Temp\katE261.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/2580-40-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2580-50-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2580-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2580-10-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2580-22-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2580-23-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2580-25-0x0000000022660000-0x00000000228BF000-memory.dmp

Filesize
2.4MB

Download
memory/2580-80-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2580-41-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2580-79-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2580-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2580-57-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2580-65-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2580-66-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2580-77-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2580-78-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3608-9-0x0000000000400000-0x000000000058E000-memory.dmp

Filesize
1.6MB

Download
memory/3608-0-0x0000000002540000-0x0000000002541000-memory.dmp

Filesize
4KB

Download
memory/3608-1-0x0000000004070000-0x0000000004183000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads