stealc | 76dc96174da7e5191c60360e701d320c18d7111d2e239a85cef89dd9883e0af1

General

Target

76dc96174da7e5191c60360e701d320c18d7111d2e239a85cef89dd9883e0af1.exe
Size

1.8MB
MD5

c800fa9591e67565c585156bfe2c7dc3
SHA1

dcdc3f3701fb75550d8c39c56241938870ac1c51
SHA256

76dc96174da7e5191c60360e701d320c18d7111d2e239a85cef89dd9883e0af1
SHA512

5df743907bc563f041e4af8a9bb409981e344a7e72998c98028939f2b38529c5233949f2b0a8987881a863402608d22bca09ffbab6f6bf3a136b18441c4cd2bc
SSDEEP

24576:FBfuZfeq6stO6hTdtTF+TxMoxQH1Tj4wtjYZH1DmoYYzi3WH45yv+OueSJhm9e:F7qF/JtTF+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/3172-1-0x0000000004100000-0x0000000004249000-memory.dmp	family_vidar_v7
behavioral2/memory/3764-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3764-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3764-10-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3764-19-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3764-20-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3764-37-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3764-38-0x0000000000400000-0x0000000000646000-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:

kat6CB4.tmp

pid process

3764 kat6CB4.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
3764	kat6CB4.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

76dc96174da7e5191c60360e701d320c18d7111d2e239a85cef89dd9883e0af1.exe

description	pid	process	target process
PID 3172 set thread context of 3764	3172	76dc96174da7e5191c60360e701d320c18d7111d2e239a85cef89dd9883e0af1.exe	kat6CB4.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:

kat6CB4.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat6CB4.tmp
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

kat6CB4.tmp

pid process

3764 kat6CB4.tmp
3764 kat6CB4.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat6CB4.tmp

pid	process
3764	kat6CB4.tmp
3764	kat6CB4.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

76dc96174da7e5191c60360e701d320c18d7111d2e239a85cef89dd9883e0af1.exe

description	pid	process	target process
PID 3172 wrote to memory of 3764	3172	76dc96174da7e5191c60360e701d320c18d7111d2e239a85cef89dd9883e0af1.exe	kat6CB4.tmp
PID 3172 wrote to memory of 3764	3172	76dc96174da7e5191c60360e701d320c18d7111d2e239a85cef89dd9883e0af1.exe	kat6CB4.tmp
PID 3172 wrote to memory of 3764	3172	76dc96174da7e5191c60360e701d320c18d7111d2e239a85cef89dd9883e0af1.exe	kat6CB4.tmp
PID 3172 wrote to memory of 3764	3172	76dc96174da7e5191c60360e701d320c18d7111d2e239a85cef89dd9883e0af1.exe	kat6CB4.tmp
PID 3172 wrote to memory of 3764	3172	76dc96174da7e5191c60360e701d320c18d7111d2e239a85cef89dd9883e0af1.exe	kat6CB4.tmp
PID 3172 wrote to memory of 3764	3172	76dc96174da7e5191c60360e701d320c18d7111d2e239a85cef89dd9883e0af1.exe	kat6CB4.tmp
PID 3172 wrote to memory of 3764	3172	76dc96174da7e5191c60360e701d320c18d7111d2e239a85cef89dd9883e0af1.exe	kat6CB4.tmp
PID 3172 wrote to memory of 3764	3172	76dc96174da7e5191c60360e701d320c18d7111d2e239a85cef89dd9883e0af1.exe	kat6CB4.tmp

C:\Users\Admin\AppData\Local\Temp\76dc96174da7e5191c60360e701d320c18d7111d2e239a85cef89dd9883e0af1.exe
"C:\Users\Admin\AppData\Local\Temp\76dc96174da7e5191c60360e701d320c18d7111d2e239a85cef89dd9883e0af1.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3172

C:\Users\Admin\AppData\Local\Temp\kat6CB4.tmp
C:\Users\Admin\AppData\Local\Temp\kat6CB4.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:3764

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\kat6CB4.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/3172-0-0x0000000002410000-0x0000000002411000-memory.dmp

Filesize
4KB

Download
memory/3172-1-0x0000000004100000-0x0000000004249000-memory.dmp

Filesize
1.3MB

Download
memory/3172-9-0x0000000000400000-0x00000000005D1000-memory.dmp

Filesize
1.8MB

Download
memory/3764-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3764-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3764-10-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3764-19-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3764-20-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3764-22-0x0000000026090000-0x00000000262EF000-memory.dmp

Filesize
2.4MB

Download
memory/3764-37-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3764-38-0x0000000000400000-0x0000000000646000-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