stealc | 9bee1839332630cbc3b1574eb99f3e2c00c7f94622e13e3b2465e0c1cd30fe01

General

Target

9bee1839332630cbc3b1574eb99f3e2c00c7f94622e13e3b2465e0c1cd30fe01.exe
Size

2.1MB
MD5

e80400f40e148f56c7a8939afd9ce692
SHA1

6d3f7c931086aea55842b88a4f01a3d4fec341c7
SHA256

9bee1839332630cbc3b1574eb99f3e2c00c7f94622e13e3b2465e0c1cd30fe01
SHA512

d80955c78718a9fbcd5b8da60a0b06536ca281b421626960a1274584e525768c2426745ab7b9cddc7d06eb04c89b7fd0cd84db8b9a7e41c67bc11550b69f0260
SSDEEP

49152:N6uDuaS9refe0JtTF+TxMoxc1TU+j+dAzGwlrh:N6uKb9r0tIuoITsdZ

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
behavioral1/memory/1300-1-0x00000000040D0000-0x0000000004219000-memory.dmp	family_vidar_v7
behavioral1/memory/1256-9-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1256-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1256-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1256-14-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1256-15-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1256-32-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1256-33-0x0000000000400000-0x0000000000646000-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:

kat3587.tmp

pid process

1256 kat3587.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
1256	kat3587.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

9bee1839332630cbc3b1574eb99f3e2c00c7f94622e13e3b2465e0c1cd30fe01.exe

description	pid	process	target process
PID 1300 set thread context of 1256	1300	9bee1839332630cbc3b1574eb99f3e2c00c7f94622e13e3b2465e0c1cd30fe01.exe	kat3587.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:

kat3587.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat3587.tmp
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

kat3587.tmp

pid process

1256 kat3587.tmp
1256 kat3587.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat3587.tmp

pid	process
1256	kat3587.tmp
1256	kat3587.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

9bee1839332630cbc3b1574eb99f3e2c00c7f94622e13e3b2465e0c1cd30fe01.exe

description	pid	process	target process
PID 1300 wrote to memory of 1256	1300	9bee1839332630cbc3b1574eb99f3e2c00c7f94622e13e3b2465e0c1cd30fe01.exe	kat3587.tmp
PID 1300 wrote to memory of 1256	1300	9bee1839332630cbc3b1574eb99f3e2c00c7f94622e13e3b2465e0c1cd30fe01.exe	kat3587.tmp
PID 1300 wrote to memory of 1256	1300	9bee1839332630cbc3b1574eb99f3e2c00c7f94622e13e3b2465e0c1cd30fe01.exe	kat3587.tmp
PID 1300 wrote to memory of 1256	1300	9bee1839332630cbc3b1574eb99f3e2c00c7f94622e13e3b2465e0c1cd30fe01.exe	kat3587.tmp
PID 1300 wrote to memory of 1256	1300	9bee1839332630cbc3b1574eb99f3e2c00c7f94622e13e3b2465e0c1cd30fe01.exe	kat3587.tmp
PID 1300 wrote to memory of 1256	1300	9bee1839332630cbc3b1574eb99f3e2c00c7f94622e13e3b2465e0c1cd30fe01.exe	kat3587.tmp
PID 1300 wrote to memory of 1256	1300	9bee1839332630cbc3b1574eb99f3e2c00c7f94622e13e3b2465e0c1cd30fe01.exe	kat3587.tmp
PID 1300 wrote to memory of 1256	1300	9bee1839332630cbc3b1574eb99f3e2c00c7f94622e13e3b2465e0c1cd30fe01.exe	kat3587.tmp

C:\Users\Admin\AppData\Local\Temp\9bee1839332630cbc3b1574eb99f3e2c00c7f94622e13e3b2465e0c1cd30fe01.exe
"C:\Users\Admin\AppData\Local\Temp\9bee1839332630cbc3b1574eb99f3e2c00c7f94622e13e3b2465e0c1cd30fe01.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1300

C:\Users\Admin\AppData\Local\Temp\kat3587.tmp
C:\Users\Admin\AppData\Local\Temp\kat3587.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:1256

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\kat3587.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/1256-9-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1256-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1256-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1256-14-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1256-15-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1256-17-0x000000001B740000-0x000000001B99F000-memory.dmp

Filesize
2.4MB

Download
memory/1256-32-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1256-33-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1300-0-0x0000000002270000-0x0000000002271000-memory.dmp

Filesize
4KB

Download
memory/1300-1-0x00000000040D0000-0x0000000004219000-memory.dmp

Filesize
1.3MB

Download
memory/1300-10-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads