stealc | 53bd2c768909ff79fa0a51c66d069cd8e032854934e4e3fd78f6b7f2ad740b7e

General

Target

53bd2c768909ff79fa0a51c66d069cd8e032854934e4e3fd78f6b7f2ad740b7e.exe
Size

1.8MB
MD5

58770eb5bedf4fc2dab2db6ddc290c04
SHA1

4f6389348b0d50171081cd0aeb67eead61b9ab3a
SHA256

53bd2c768909ff79fa0a51c66d069cd8e032854934e4e3fd78f6b7f2ad740b7e
SHA512

db37949bed7994ba7f0383bc4a664716b8cbd6f340173284fd9b996018210e18983e0c31542f19f41aa5a643890914b5cec57fe004b3d535e404c7c2def7a938
SSDEEP

24576:FBfuZfeq6slO6hTdtTF+TxMoxQH1Tj4wtjYZH1DmoYYzi3WH45yv+OueSJhm9e:F7qF3JtTF+TxMoxc1TU+j+dAzGwlrh

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/4156-2-0x0000000003FF0000-0x0000000004139000-memory.dmp	family_vidar_v7
behavioral2/memory/4456-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4456-9-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4456-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4456-19-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4456-20-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4456-37-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/4456-38-0x0000000000400000-0x0000000000646000-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:

kat7D1F.tmp

pid process

4456 kat7D1F.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
4456	kat7D1F.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

53bd2c768909ff79fa0a51c66d069cd8e032854934e4e3fd78f6b7f2ad740b7e.exe

description	pid	process	target process
PID 4156 set thread context of 4456	4156	53bd2c768909ff79fa0a51c66d069cd8e032854934e4e3fd78f6b7f2ad740b7e.exe	kat7D1F.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:

kat7D1F.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat7D1F.tmp
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

kat7D1F.tmp

pid process

4456 kat7D1F.tmp
4456 kat7D1F.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat7D1F.tmp

pid	process
4456	kat7D1F.tmp
4456	kat7D1F.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

53bd2c768909ff79fa0a51c66d069cd8e032854934e4e3fd78f6b7f2ad740b7e.exe

description	pid	process	target process
PID 4156 wrote to memory of 4456	4156	53bd2c768909ff79fa0a51c66d069cd8e032854934e4e3fd78f6b7f2ad740b7e.exe	kat7D1F.tmp
PID 4156 wrote to memory of 4456	4156	53bd2c768909ff79fa0a51c66d069cd8e032854934e4e3fd78f6b7f2ad740b7e.exe	kat7D1F.tmp
PID 4156 wrote to memory of 4456	4156	53bd2c768909ff79fa0a51c66d069cd8e032854934e4e3fd78f6b7f2ad740b7e.exe	kat7D1F.tmp
PID 4156 wrote to memory of 4456	4156	53bd2c768909ff79fa0a51c66d069cd8e032854934e4e3fd78f6b7f2ad740b7e.exe	kat7D1F.tmp
PID 4156 wrote to memory of 4456	4156	53bd2c768909ff79fa0a51c66d069cd8e032854934e4e3fd78f6b7f2ad740b7e.exe	kat7D1F.tmp
PID 4156 wrote to memory of 4456	4156	53bd2c768909ff79fa0a51c66d069cd8e032854934e4e3fd78f6b7f2ad740b7e.exe	kat7D1F.tmp
PID 4156 wrote to memory of 4456	4156	53bd2c768909ff79fa0a51c66d069cd8e032854934e4e3fd78f6b7f2ad740b7e.exe	kat7D1F.tmp
PID 4156 wrote to memory of 4456	4156	53bd2c768909ff79fa0a51c66d069cd8e032854934e4e3fd78f6b7f2ad740b7e.exe	kat7D1F.tmp

C:\Users\Admin\AppData\Local\Temp\53bd2c768909ff79fa0a51c66d069cd8e032854934e4e3fd78f6b7f2ad740b7e.exe
"C:\Users\Admin\AppData\Local\Temp\53bd2c768909ff79fa0a51c66d069cd8e032854934e4e3fd78f6b7f2ad740b7e.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4156

C:\Users\Admin\AppData\Local\Temp\kat7D1F.tmp
C:\Users\Admin\AppData\Local\Temp\kat7D1F.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4456

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\kat7D1F.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/4156-0-0x0000000002530000-0x0000000002531000-memory.dmp

Filesize
4KB

Download
memory/4156-2-0x0000000003FF0000-0x0000000004139000-memory.dmp

Filesize
1.3MB

Download
memory/4156-10-0x0000000000400000-0x00000000005D1000-memory.dmp

Filesize
1.8MB

Download
memory/4456-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4456-9-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4456-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4456-19-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4456-20-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4456-22-0x0000000026020000-0x000000002627F000-memory.dmp

Filesize
2.4MB

Download
memory/4456-37-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4456-38-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads