stealc | e8776bb428aaae87d950fcd824716adf60d688b0ecff6c38a621fd3a631f15fc

General

Target

e8776bb428aaae87d950fcd824716adf60d688b0ecff6c38a621fd3a631f15fc.exe
Size

2.1MB
MD5

a4276accbbed07488df8c5aea711dcde
SHA1

392d232942a64d0f9e74cf10d26daa0f25d792d5
SHA256

e8776bb428aaae87d950fcd824716adf60d688b0ecff6c38a621fd3a631f15fc
SHA512

e17dd2fa944bf2739d60ed2d863b9f99656f04d535f9b6a90eaf02029ff45f9f5b3e734f11cda09ae743450940ca2efc17b21166ac124f781d4a7f23b5ca4c43
SSDEEP

49152:N6uDuaS9refe4JtTF+TxMoxc1TU+j+dAzGwlrh:N6uKb9b4tIuoITsdZ

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

Detect Vidar Stealer 8 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/2352-1-0x0000000003FF0000-0x0000000004139000-memory.dmp	family_vidar_v7
behavioral2/memory/1392-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1392-9-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1392-10-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1392-17-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1392-18-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1392-35-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1392-36-0x0000000000400000-0x0000000000646000-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

Processes:

kat3E8F.tmp

pid process

1392 kat3E8F.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

pid	process
1392	kat3E8F.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

e8776bb428aaae87d950fcd824716adf60d688b0ecff6c38a621fd3a631f15fc.exe

description	pid	process	target process
PID 2352 set thread context of 1392	2352	e8776bb428aaae87d950fcd824716adf60d688b0ecff6c38a621fd3a631f15fc.exe	kat3E8F.tmp

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

Processes:

kat3E8F.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat3E8F.tmp
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

kat3E8F.tmp

pid process

1392 kat3E8F.tmp
1392 kat3E8F.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat3E8F.tmp

pid	process
1392	kat3E8F.tmp
1392	kat3E8F.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

e8776bb428aaae87d950fcd824716adf60d688b0ecff6c38a621fd3a631f15fc.exe

description	pid	process	target process
PID 2352 wrote to memory of 1392	2352	e8776bb428aaae87d950fcd824716adf60d688b0ecff6c38a621fd3a631f15fc.exe	kat3E8F.tmp
PID 2352 wrote to memory of 1392	2352	e8776bb428aaae87d950fcd824716adf60d688b0ecff6c38a621fd3a631f15fc.exe	kat3E8F.tmp
PID 2352 wrote to memory of 1392	2352	e8776bb428aaae87d950fcd824716adf60d688b0ecff6c38a621fd3a631f15fc.exe	kat3E8F.tmp
PID 2352 wrote to memory of 1392	2352	e8776bb428aaae87d950fcd824716adf60d688b0ecff6c38a621fd3a631f15fc.exe	kat3E8F.tmp
PID 2352 wrote to memory of 1392	2352	e8776bb428aaae87d950fcd824716adf60d688b0ecff6c38a621fd3a631f15fc.exe	kat3E8F.tmp
PID 2352 wrote to memory of 1392	2352	e8776bb428aaae87d950fcd824716adf60d688b0ecff6c38a621fd3a631f15fc.exe	kat3E8F.tmp
PID 2352 wrote to memory of 1392	2352	e8776bb428aaae87d950fcd824716adf60d688b0ecff6c38a621fd3a631f15fc.exe	kat3E8F.tmp
PID 2352 wrote to memory of 1392	2352	e8776bb428aaae87d950fcd824716adf60d688b0ecff6c38a621fd3a631f15fc.exe	kat3E8F.tmp

C:\Users\Admin\AppData\Local\Temp\e8776bb428aaae87d950fcd824716adf60d688b0ecff6c38a621fd3a631f15fc.exe
"C:\Users\Admin\AppData\Local\Temp\e8776bb428aaae87d950fcd824716adf60d688b0ecff6c38a621fd3a631f15fc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2352
- C:\Users\Admin\AppData\Local\Temp\kat3E8F.tmp
  C:\Users\Admin\AppData\Local\Temp\kat3E8F.tmp
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:1392

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\kat3E8F.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/1392-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1392-9-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1392-10-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1392-17-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1392-18-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1392-20-0x000000001B760000-0x000000001B9BF000-memory.dmp

Filesize
2.4MB

Download
memory/1392-35-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1392-36-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2352-0-0x00000000007E0000-0x00000000007E1000-memory.dmp

Filesize
4KB

Download
memory/2352-1-0x0000000003FF0000-0x0000000004139000-memory.dmp

Filesize
1.3MB

Download
memory/2352-6-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads