stealc | 1e057497f0ea743c71538d4e08bff3e469e0bc7467617245841375587f4d4a2a

General

Target

1e057497f0ea743c71538d4e08bff3e469e0bc7467617245841375587f4d4a2a.exe
Size

2.9MB
MD5

0106c47448dd2470e5d3d2550e94a560
SHA1

06e62d065bac64d68e44742adbdf45067b950648
SHA256

1e057497f0ea743c71538d4e08bff3e469e0bc7467617245841375587f4d4a2a
SHA512

75a342fa44fa3ccabe80c499f4357b82dec2b31a49fb7f6a982a0880ba6045237b0c7a0ab761478eaca2c26ec35d2d322139bc104e8c1ef3b89f7b37d54bed97
SSDEEP

49152:rtpSxptE1AKnCVMS4cdR/z4+UVi4e9Crn:r/4nE1dCqKxx4e9Cb

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 8 IoCs

stealer

resource	yara_rule
behavioral2/memory/3408-1-0x0000000004270000-0x00000000043D6000-memory.dmp	family_vidar_v7
behavioral2/memory/3684-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3684-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3684-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3684-24-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3684-25-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3684-42-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3684-43-0x0000000000400000-0x0000000000648000-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
3684	kat3A59.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 3408 set thread context of 3684	3408	1e057497f0ea743c71538d4e08bff3e469e0bc7467617245841375587f4d4a2a.exe	78

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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat3A59.tmp

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3684	kat3A59.tmp
3684	kat3A59.tmp

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3408 wrote to memory of 3684	3408	1e057497f0ea743c71538d4e08bff3e469e0bc7467617245841375587f4d4a2a.exe	78
PID 3408 wrote to memory of 3684	3408	1e057497f0ea743c71538d4e08bff3e469e0bc7467617245841375587f4d4a2a.exe	78
PID 3408 wrote to memory of 3684	3408	1e057497f0ea743c71538d4e08bff3e469e0bc7467617245841375587f4d4a2a.exe	78
PID 3408 wrote to memory of 3684	3408	1e057497f0ea743c71538d4e08bff3e469e0bc7467617245841375587f4d4a2a.exe	78
PID 3408 wrote to memory of 3684	3408	1e057497f0ea743c71538d4e08bff3e469e0bc7467617245841375587f4d4a2a.exe	78
PID 3408 wrote to memory of 3684	3408	1e057497f0ea743c71538d4e08bff3e469e0bc7467617245841375587f4d4a2a.exe	78
PID 3408 wrote to memory of 3684	3408	1e057497f0ea743c71538d4e08bff3e469e0bc7467617245841375587f4d4a2a.exe	78
PID 3408 wrote to memory of 3684	3408	1e057497f0ea743c71538d4e08bff3e469e0bc7467617245841375587f4d4a2a.exe	78

C:\Users\Admin\AppData\Local\Temp\1e057497f0ea743c71538d4e08bff3e469e0bc7467617245841375587f4d4a2a.exe
"C:\Users\Admin\AppData\Local\Temp\1e057497f0ea743c71538d4e08bff3e469e0bc7467617245841375587f4d4a2a.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3408
- C:\Users\Admin\AppData\Local\Temp\kat3A59.tmp
  C:\Users\Admin\AppData\Local\Temp\kat3A59.tmp
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3684

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\kat3A59.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/3408-0-0x0000000002590000-0x0000000002591000-memory.dmp

Filesize
4KB

Download
memory/3408-1-0x0000000004270000-0x00000000043D6000-memory.dmp

Filesize
1.4MB

Download
memory/3408-9-0x0000000000400000-0x00000000006EF000-memory.dmp

Filesize
2.9MB

Download
memory/3684-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3684-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3684-10-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3684-24-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3684-25-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3684-28-0x000000001DCB0000-0x000000001DF0F000-memory.dmp

Filesize
2.4MB

Download
memory/3684-42-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3684-43-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads