stealc | 26f4752c9c6e47f46a1542f0d3fb360cc90250b5106135c43d66ad096833b1c7

Analysis

max time kernel
291s
max time network
305s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
07-05-2024 22:32

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General

Target

26f4752c9c6e47f46a1542f0d3fb360cc90250b5106135c43d66ad096833b1c7.exe
Size

387KB
MD5

7318bf9884fb2c2c5fd8cd433ec1365b
SHA1

ee3c29a40f2a55c915305535a1d9bd604d6ed2ee
SHA256

26f4752c9c6e47f46a1542f0d3fb360cc90250b5106135c43d66ad096833b1c7
SHA512

b3c024b70352d1c17fa0f475a0e2db28c58e106e4b4bbebbedc68b1d97dedab7fd8a7e562ccc38a77517a928094157fba91dcd64699419a784b35affc5f784e1
SSDEEP

12288:Xo+IGLAUh9pXNF4kay4y3tZioO65Q14XPi:lIUJrFayjTiIdf

Score

10^/10

stealc vidar 03cea2609023d13f145ac6c5dc897112 stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

Version

9.3

Botnet

03cea2609023d13f145ac6c5dc897112

https://steamcommunity.com/profiles/76561199680449169

https://t.me/r1g1o

Attributes

profile_id_v2
03cea2609023d13f145ac6c5dc897112
user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36 OPR/101.0.0.0

Signatures

Detect Vidar Stealer 4 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/1628-3-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7
behavioral2/memory/1628-5-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7
behavioral2/memory/1628-1-0x0000000000400000-0x0000000000643000-memory.dmp	family_vidar_v7
behavioral2/memory/748-14-0x0000000000090000-0x00000000000F2953-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

Suspicious use of SetThreadContext 1 IoCs

Processes:

26f4752c9c6e47f46a1542f0d3fb360cc90250b5106135c43d66ad096833b1c7.exe

description	pid	process	target process
PID 748 set thread context of 1628	748	26f4752c9c6e47f46a1542f0d3fb360cc90250b5106135c43d66ad096833b1c7.exe	RegAsm.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid	pid_target	process	target process
4588	748	WerFault.exe	26f4752c9c6e47f46a1542f0d3fb360cc90250b5106135c43d66ad096833b1c7.exe
4152	1628	WerFault.exe	RegAsm.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

26f4752c9c6e47f46a1542f0d3fb360cc90250b5106135c43d66ad096833b1c7.exe

description	pid	process	target process
PID 748 wrote to memory of 4620	748	26f4752c9c6e47f46a1542f0d3fb360cc90250b5106135c43d66ad096833b1c7.exe	RegAsm.exe
PID 748 wrote to memory of 4620	748	26f4752c9c6e47f46a1542f0d3fb360cc90250b5106135c43d66ad096833b1c7.exe	RegAsm.exe
PID 748 wrote to memory of 4620	748	26f4752c9c6e47f46a1542f0d3fb360cc90250b5106135c43d66ad096833b1c7.exe	RegAsm.exe
PID 748 wrote to memory of 1628	748	26f4752c9c6e47f46a1542f0d3fb360cc90250b5106135c43d66ad096833b1c7.exe	RegAsm.exe
PID 748 wrote to memory of 1628	748	26f4752c9c6e47f46a1542f0d3fb360cc90250b5106135c43d66ad096833b1c7.exe	RegAsm.exe
PID 748 wrote to memory of 1628	748	26f4752c9c6e47f46a1542f0d3fb360cc90250b5106135c43d66ad096833b1c7.exe	RegAsm.exe
PID 748 wrote to memory of 1628	748	26f4752c9c6e47f46a1542f0d3fb360cc90250b5106135c43d66ad096833b1c7.exe	RegAsm.exe
PID 748 wrote to memory of 1628	748	26f4752c9c6e47f46a1542f0d3fb360cc90250b5106135c43d66ad096833b1c7.exe	RegAsm.exe
PID 748 wrote to memory of 1628	748	26f4752c9c6e47f46a1542f0d3fb360cc90250b5106135c43d66ad096833b1c7.exe	RegAsm.exe
PID 748 wrote to memory of 1628	748	26f4752c9c6e47f46a1542f0d3fb360cc90250b5106135c43d66ad096833b1c7.exe	RegAsm.exe
PID 748 wrote to memory of 1628	748	26f4752c9c6e47f46a1542f0d3fb360cc90250b5106135c43d66ad096833b1c7.exe	RegAsm.exe
PID 748 wrote to memory of 1628	748	26f4752c9c6e47f46a1542f0d3fb360cc90250b5106135c43d66ad096833b1c7.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\26f4752c9c6e47f46a1542f0d3fb360cc90250b5106135c43d66ad096833b1c7.exe
"C:\Users\Admin\AppData\Local\Temp\26f4752c9c6e47f46a1542f0d3fb360cc90250b5106135c43d66ad096833b1c7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:748

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
PID:4620

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
PID:1628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 2176
3⤵
- Program crash
PID:4152

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 748 -s 316
2⤵
- Program crash
PID:4588

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/748-0-0x00000000000EE000-0x00000000000F0000-memory.dmp

Filesize
8KB

Download
memory/748-14-0x0000000000090000-0x00000000000F2953-memory.dmp

Filesize
394KB

Download
memory/748-16-0x00000000000EE000-0x00000000000F0000-memory.dmp

Filesize
8KB

Download
memory/1628-3-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/1628-5-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/1628-1-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download