stealc | d9584ddea50a6c3554b167ac6415a40598adb4def23fbcd4d163c290ac195925

General

Target

d9584ddea50a6c3554b167ac6415a40598adb4def23fbcd4d163c290ac195925.exe
Size

2.2MB
MD5

771d3479acad162769b11e0a37adc2a1
SHA1

c1474348765bf363dc14b27446a3f8309e352eda
SHA256

d9584ddea50a6c3554b167ac6415a40598adb4def23fbcd4d163c290ac195925
SHA512

5e14a7eaeeda73d535a0ce8da015b887b5fe8f23569e1ffaae21d2d84966a57a18130c5dc9086c199689f7ae3ab1cb7a11765d5e5169d51182ff79fc5a50e0a2
SSDEEP

49152:qpjNvr9ySAOmw4pHHO+SASagXkJr4MDkUwm:qpjNp7p4pHH8n5A

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

vidar

C2

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 9 IoCs

stealer

resource	yara_rule
behavioral1/memory/3200-1-0x0000000004020000-0x0000000004130000-memory.dmp	family_vidar_v7
behavioral1/memory/2280-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2280-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2280-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2280-20-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2280-23-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2280-24-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2280-41-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2280-42-0x0000000000400000-0x0000000000648000-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

Executes dropped EXE 1 IoCs

pid	Process
2280	kat3E41.tmp

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
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 3200 set thread context of 2280	3200	d9584ddea50a6c3554b167ac6415a40598adb4def23fbcd4d163c290ac195925.exe	81

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	kat3E41.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat3E41.tmp

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2280	kat3E41.tmp
2280	kat3E41.tmp
2280	kat3E41.tmp
2280	kat3E41.tmp

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3200 wrote to memory of 2280	3200	d9584ddea50a6c3554b167ac6415a40598adb4def23fbcd4d163c290ac195925.exe	81
PID 3200 wrote to memory of 2280	3200	d9584ddea50a6c3554b167ac6415a40598adb4def23fbcd4d163c290ac195925.exe	81
PID 3200 wrote to memory of 2280	3200	d9584ddea50a6c3554b167ac6415a40598adb4def23fbcd4d163c290ac195925.exe	81
PID 3200 wrote to memory of 2280	3200	d9584ddea50a6c3554b167ac6415a40598adb4def23fbcd4d163c290ac195925.exe	81
PID 3200 wrote to memory of 2280	3200	d9584ddea50a6c3554b167ac6415a40598adb4def23fbcd4d163c290ac195925.exe	81
PID 3200 wrote to memory of 2280	3200	d9584ddea50a6c3554b167ac6415a40598adb4def23fbcd4d163c290ac195925.exe	81
PID 3200 wrote to memory of 2280	3200	d9584ddea50a6c3554b167ac6415a40598adb4def23fbcd4d163c290ac195925.exe	81
PID 3200 wrote to memory of 2280	3200	d9584ddea50a6c3554b167ac6415a40598adb4def23fbcd4d163c290ac195925.exe	81

C:\Users\Admin\AppData\Local\Temp\d9584ddea50a6c3554b167ac6415a40598adb4def23fbcd4d163c290ac195925.exe
"C:\Users\Admin\AppData\Local\Temp\d9584ddea50a6c3554b167ac6415a40598adb4def23fbcd4d163c290ac195925.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3200
- C:\Users\Admin\AppData\Local\Temp\kat3E41.tmp
  C:\Users\Admin\AppData\Local\Temp\kat3E41.tmp
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:2280

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\kat3E41.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/2280-24-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2280-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2280-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2280-10-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2280-20-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2280-23-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2280-26-0x0000000020200000-0x000000002045F000-memory.dmp

Filesize
2.4MB

Download
memory/2280-41-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2280-42-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3200-1-0x0000000004020000-0x0000000004130000-memory.dmp

Filesize
1.1MB

Download
memory/3200-9-0x0000000000400000-0x0000000000635000-memory.dmp

Filesize
2.2MB

Download
memory/3200-0-0x0000000000800000-0x0000000000801000-memory.dmp

Filesize
4KB

Download

Analysis

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