stealc | 7db8813130a8632e902a429b1ff83d5545a360d2ca06354815293ecca9fd025c

General

Target

7db8813130a8632e902a429b1ff83d5545a360d2ca06354815293ecca9fd025c.exe
Size

1.8MB
MD5

12e60913c3792f9ce24b60e6c3ff5142
SHA1

313202074b283981fd22cc76274301c00bf7231b
SHA256

7db8813130a8632e902a429b1ff83d5545a360d2ca06354815293ecca9fd025c
SHA512

bf60887b7d224769bdbf93ffa568da4272c278c1fba4def1b423afcddf8f642415e131ab9a81ec86244b42aae83873d934ffb5c49a8fa99aeefbeb8d094cf1df
SSDEEP

24576:W7YfUB7F1931tbIYaOV+rEfv0xwT3zxNOt4XigDSCuptNEynEsqqfD:W75B7FDFtbIYa8aesY3Ot4N7G/

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://t.me/ta904ek

https://steamcommunity.com/profiles/76561199695752269

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
behavioral1/memory/2812-2-0x0000000002AD0000-0x0000000002C1C000-memory.dmp	family_vidar_v7
behavioral1/memory/4956-8-0x0000000000400000-0x0000000000649000-memory.dmp	family_vidar_v7
behavioral1/memory/4956-4-0x0000000000400000-0x0000000000649000-memory.dmp	family_vidar_v7
behavioral1/memory/4956-19-0x0000000000400000-0x0000000000649000-memory.dmp	family_vidar_v7
behavioral1/memory/4956-22-0x0000000000400000-0x0000000000649000-memory.dmp	family_vidar_v7
behavioral1/memory/4956-23-0x0000000000400000-0x0000000000649000-memory.dmp	family_vidar_v7
behavioral1/memory/4956-40-0x0000000000400000-0x0000000000649000-memory.dmp	family_vidar_v7
behavioral1/memory/4956-41-0x0000000000400000-0x0000000000649000-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
4956	kat5554.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 2812 set thread context of 4956	2812	7db8813130a8632e902a429b1ff83d5545a360d2ca06354815293ecca9fd025c.exe	92

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	kat5554.tmp

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4956	kat5554.tmp
4956	kat5554.tmp

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2812 wrote to memory of 4956	2812	7db8813130a8632e902a429b1ff83d5545a360d2ca06354815293ecca9fd025c.exe	92
PID 2812 wrote to memory of 4956	2812	7db8813130a8632e902a429b1ff83d5545a360d2ca06354815293ecca9fd025c.exe	92
PID 2812 wrote to memory of 4956	2812	7db8813130a8632e902a429b1ff83d5545a360d2ca06354815293ecca9fd025c.exe	92
PID 2812 wrote to memory of 4956	2812	7db8813130a8632e902a429b1ff83d5545a360d2ca06354815293ecca9fd025c.exe	92
PID 2812 wrote to memory of 4956	2812	7db8813130a8632e902a429b1ff83d5545a360d2ca06354815293ecca9fd025c.exe	92
PID 2812 wrote to memory of 4956	2812	7db8813130a8632e902a429b1ff83d5545a360d2ca06354815293ecca9fd025c.exe	92
PID 2812 wrote to memory of 4956	2812	7db8813130a8632e902a429b1ff83d5545a360d2ca06354815293ecca9fd025c.exe	92
PID 2812 wrote to memory of 4956	2812	7db8813130a8632e902a429b1ff83d5545a360d2ca06354815293ecca9fd025c.exe	92

C:\Users\Admin\AppData\Local\Temp\7db8813130a8632e902a429b1ff83d5545a360d2ca06354815293ecca9fd025c.exe
"C:\Users\Admin\AppData\Local\Temp\7db8813130a8632e902a429b1ff83d5545a360d2ca06354815293ecca9fd025c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2812
- C:\Users\Admin\AppData\Local\Temp\kat5554.tmp
  C:\Users\Admin\AppData\Local\Temp\kat5554.tmp
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:4956

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\kat5554.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/2812-0-0x0000000000780000-0x0000000000781000-memory.dmp

Filesize
4KB

Download
memory/2812-2-0x0000000002AD0000-0x0000000002C1C000-memory.dmp

Filesize
1.3MB

Download
memory/2812-9-0x0000000000400000-0x00000000005CE000-memory.dmp

Filesize
1.8MB

Download
memory/4956-8-0x0000000000400000-0x0000000000649000-memory.dmp

Filesize
2.3MB

Download
memory/4956-4-0x0000000000400000-0x0000000000649000-memory.dmp

Filesize
2.3MB

Download
memory/4956-19-0x0000000000400000-0x0000000000649000-memory.dmp

Filesize
2.3MB

Download
memory/4956-22-0x0000000000400000-0x0000000000649000-memory.dmp

Filesize
2.3MB

Download
memory/4956-23-0x0000000000400000-0x0000000000649000-memory.dmp

Filesize
2.3MB

Download
memory/4956-25-0x000000001B830000-0x000000001BA8F000-memory.dmp

Filesize
2.4MB

Download
memory/4956-40-0x0000000000400000-0x0000000000649000-memory.dmp

Filesize
2.3MB

Download
memory/4956-41-0x0000000000400000-0x0000000000649000-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