stealc | c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de

General

Target

c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe
Size

2.1MB
MD5

c19fa538bced1969f1316bcebcf16468
SHA1

1ce8f14d436741f3d09fb7493d8c20d068cf3b48
SHA256

c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de
SHA512

262832017398a760ef43cf9d60bda3737cf22494cd82e400dbb9b3e32f9c8e1dddd51c35314618ff11914699f2b22f7f31528a294f40d919b439bab58acaa599
SSDEEP

49152:N6uDuaS9refegJtTF+TxMoxc1TU+j+dAzGwlrh:N6uKb9zgtIuoITsdZ

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/1360-1-0x0000000004030000-0x0000000004179000-memory.dmp	family_vidar_v7
behavioral2/memory/3744-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3744-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3744-10-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3744-16-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3744-17-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3744-34-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3744-35-0x0000000000400000-0x0000000000646000-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:

kat64D4.tmp

pid process

3744 kat64D4.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
3744	kat64D4.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe

description	pid	process	target process
PID 1360 set thread context of 3744	1360	c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe	kat64D4.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:

kat64D4.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat64D4.tmp
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

kat64D4.tmp

pid process

3744 kat64D4.tmp
3744 kat64D4.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat64D4.tmp

pid	process
3744	kat64D4.tmp
3744	kat64D4.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe

description	pid	process	target process
PID 1360 wrote to memory of 3744	1360	c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe	kat64D4.tmp
PID 1360 wrote to memory of 3744	1360	c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe	kat64D4.tmp
PID 1360 wrote to memory of 3744	1360	c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe	kat64D4.tmp
PID 1360 wrote to memory of 3744	1360	c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe	kat64D4.tmp
PID 1360 wrote to memory of 3744	1360	c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe	kat64D4.tmp
PID 1360 wrote to memory of 3744	1360	c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe	kat64D4.tmp
PID 1360 wrote to memory of 3744	1360	c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe	kat64D4.tmp
PID 1360 wrote to memory of 3744	1360	c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe	kat64D4.tmp

C:\Users\Admin\AppData\Local\Temp\c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe
"C:\Users\Admin\AppData\Local\Temp\c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1360

C:\Users\Admin\AppData\Local\Temp\kat64D4.tmp
C:\Users\Admin\AppData\Local\Temp\kat64D4.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:3744

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\kat64D4.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/1360-0-0x0000000002480000-0x0000000002481000-memory.dmp

Filesize
4KB

Download
memory/1360-1-0x0000000004030000-0x0000000004179000-memory.dmp

Filesize
1.3MB

Download
memory/1360-9-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/3744-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3744-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3744-10-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3744-16-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3744-17-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3744-19-0x000000001B7E0000-0x000000001BA3F000-memory.dmp

Filesize
2.4MB

Download
memory/3744-34-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3744-35-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads