stealc | efe73ed9f4cb9f1aa43cc67d0f1c174c45393a7a5c0c2cbf8526540706d7bcc5

Analysis

max time kernel
93s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
29-06-2024 17:21

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General

Target

efe73ed9f4cb9f1aa43cc67d0f1c174c45393a7a5c0c2cbf8526540706d7bcc5.exe
Size

2.2MB
MD5

77fd6bd4cbe7766af161d30026ba93b5
SHA1

1873f71054a1156cd2ad7e856b24b09fcf5e2216
SHA256

efe73ed9f4cb9f1aa43cc67d0f1c174c45393a7a5c0c2cbf8526540706d7bcc5
SHA512

d7b2b3e6fed1d8278b3f7be815b257a54477548aa5dbc253e0da19da42687e736792756300c35d721709fb1a6fc8c32a820235fff5df78c73ca9ff6a09d16bc5
SSDEEP

49152:qpjNvr9ySAOmw49HHO+SASagXkJr4MDkUwm:qpjNp7p49HH8n5A

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

vidar

https://t.me/g067n

https://steamcommunity.com/profiles/76561199707802586

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Signatures

Detect Vidar Stealer 8 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/1900-1-0x0000000004110000-0x0000000004220000-memory.dmp	family_vidar_v7
behavioral1/memory/4900-9-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4900-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4900-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4900-22-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4900-23-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4900-40-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4900-41-0x0000000000400000-0x0000000000648000-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:

kat5B7E.tmp

pid process

4900 kat5B7E.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
Suspicious use of SetThreadContext 1 IoCs

Processes:

efe73ed9f4cb9f1aa43cc67d0f1c174c45393a7a5c0c2cbf8526540706d7bcc5.exe

description pid process target process

PID 1900 set thread context of 4900 1900 efe73ed9f4cb9f1aa43cc67d0f1c174c45393a7a5c0c2cbf8526540706d7bcc5.exe kat5B7E.tmp

pid	process
4900	kat5B7E.tmp

description	pid	process	target process
PID 1900 set thread context of 4900	1900	efe73ed9f4cb9f1aa43cc67d0f1c174c45393a7a5c0c2cbf8526540706d7bcc5.exe	kat5B7E.tmp

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

kat5B7E.tmp

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	kat5B7E.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat5B7E.tmp

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

Processes:

kat5B7E.tmp

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\2796BAE63F1801E277261BA0D77770028F20EEE4	kat5B7E.tmp
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\2796BAE63F1801E277261BA0D77770028F20EEE4\Blob = 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	kat5B7E.tmp

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

kat5B7E.tmp

pid process

4900 kat5B7E.tmp
4900 kat5B7E.tmp
4900 kat5B7E.tmp
4900 kat5B7E.tmp

pid	process
4900	kat5B7E.tmp
4900	kat5B7E.tmp
4900	kat5B7E.tmp
4900	kat5B7E.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

efe73ed9f4cb9f1aa43cc67d0f1c174c45393a7a5c0c2cbf8526540706d7bcc5.exe

description	pid	process	target process
PID 1900 wrote to memory of 4900	1900	efe73ed9f4cb9f1aa43cc67d0f1c174c45393a7a5c0c2cbf8526540706d7bcc5.exe	kat5B7E.tmp
PID 1900 wrote to memory of 4900	1900	efe73ed9f4cb9f1aa43cc67d0f1c174c45393a7a5c0c2cbf8526540706d7bcc5.exe	kat5B7E.tmp
PID 1900 wrote to memory of 4900	1900	efe73ed9f4cb9f1aa43cc67d0f1c174c45393a7a5c0c2cbf8526540706d7bcc5.exe	kat5B7E.tmp
PID 1900 wrote to memory of 4900	1900	efe73ed9f4cb9f1aa43cc67d0f1c174c45393a7a5c0c2cbf8526540706d7bcc5.exe	kat5B7E.tmp
PID 1900 wrote to memory of 4900	1900	efe73ed9f4cb9f1aa43cc67d0f1c174c45393a7a5c0c2cbf8526540706d7bcc5.exe	kat5B7E.tmp
PID 1900 wrote to memory of 4900	1900	efe73ed9f4cb9f1aa43cc67d0f1c174c45393a7a5c0c2cbf8526540706d7bcc5.exe	kat5B7E.tmp
PID 1900 wrote to memory of 4900	1900	efe73ed9f4cb9f1aa43cc67d0f1c174c45393a7a5c0c2cbf8526540706d7bcc5.exe	kat5B7E.tmp
PID 1900 wrote to memory of 4900	1900	efe73ed9f4cb9f1aa43cc67d0f1c174c45393a7a5c0c2cbf8526540706d7bcc5.exe	kat5B7E.tmp

C:\Users\Admin\AppData\Local\Temp\efe73ed9f4cb9f1aa43cc67d0f1c174c45393a7a5c0c2cbf8526540706d7bcc5.exe
"C:\Users\Admin\AppData\Local\Temp\efe73ed9f4cb9f1aa43cc67d0f1c174c45393a7a5c0c2cbf8526540706d7bcc5.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1900

C:\Users\Admin\AppData\Local\Temp\kat5B7E.tmp
C:\Users\Admin\AppData\Local\Temp\kat5B7E.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
PID:4900

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\kat5B7E.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/1900-0-0x00000000024D0000-0x00000000024D1000-memory.dmp

Filesize
4KB

Download
memory/1900-1-0x0000000004110000-0x0000000004220000-memory.dmp

Filesize
1.1MB

Download
memory/1900-10-0x0000000000400000-0x0000000000635000-memory.dmp

Filesize
2.2MB

Download
memory/4900-9-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4900-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4900-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4900-22-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4900-23-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4900-25-0x0000000024CE0000-0x0000000024F3F000-memory.dmp

Filesize
2.4MB

Download
memory/4900-40-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4900-41-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download