stealc | cc582748b0ee318ef0463664a8bddfecb29a289345effd64d88b5327c5b9dd92

Analysis

max time kernel
78s
max time network
99s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
30-06-2024 15:18

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General

Target

cc582748b0ee318ef0463664a8bddfecb29a289345effd64d88b5327c5b9dd92.exe
Size

2.2MB
MD5

d916b4d5cd104b3c23c9344394f5aef7
SHA1

d24a165d7601904c15ea967ecc922cad7d797818
SHA256

cc582748b0ee318ef0463664a8bddfecb29a289345effd64d88b5327c5b9dd92
SHA512

8b810832e3589d257a4dbb2ac2646a73d6f0bf3ee00ad35dfe350c3f42338339f97a887677f5f0f0cecb0eaa6bcf119def7a868d280bab9c3ec28f0fcf5d64cb
SSDEEP

24576:Uc0PyhhGkCI1wUL24jtYkYGbawg757CgXueAgXTTU2MZQti1u8LnsDJY6WpEYGYG:UJ0hsA91MPk21tuuIeNHYGY0LzjsJxK

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 9 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/1856-1-0x0000000004180000-0x0000000004293000-memory.dmp	family_vidar_v7
behavioral2/memory/4812-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4812-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4812-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4812-11-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4812-12-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4812-14-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4812-13-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4812-15-0x0000000000400000-0x0000000000648000-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
Executes dropped EXE 1 IoCs

Processes:

kat7271.tmp

pid process

4812 kat7271.tmp
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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:

cc582748b0ee318ef0463664a8bddfecb29a289345effd64d88b5327c5b9dd92.exe

description pid process target process

PID 1856 set thread context of 4812 1856 cc582748b0ee318ef0463664a8bddfecb29a289345effd64d88b5327c5b9dd92.exe kat7271.tmp
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4812	kat7271.tmp

description	pid	process	target process
PID 1856 set thread context of 4812	1856	cc582748b0ee318ef0463664a8bddfecb29a289345effd64d88b5327c5b9dd92.exe	kat7271.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:

kat7271.tmp

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	kat7271.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat7271.tmp

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

4908 timeout.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

kat7271.tmp

pid process

4812 kat7271.tmp
4812 kat7271.tmp
4812 kat7271.tmp
4812 kat7271.tmp
4812 kat7271.tmp
4812 kat7271.tmp

pid	process
4908	timeout.exe

pid	process
4812	kat7271.tmp
4812	kat7271.tmp
4812	kat7271.tmp
4812	kat7271.tmp
4812	kat7271.tmp
4812	kat7271.tmp

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

cc582748b0ee318ef0463664a8bddfecb29a289345effd64d88b5327c5b9dd92.exekat7271.tmpcmd.exe

description	pid	process	target process
PID 1856 wrote to memory of 4812	1856	cc582748b0ee318ef0463664a8bddfecb29a289345effd64d88b5327c5b9dd92.exe	kat7271.tmp
PID 1856 wrote to memory of 4812	1856	cc582748b0ee318ef0463664a8bddfecb29a289345effd64d88b5327c5b9dd92.exe	kat7271.tmp
PID 1856 wrote to memory of 4812	1856	cc582748b0ee318ef0463664a8bddfecb29a289345effd64d88b5327c5b9dd92.exe	kat7271.tmp
PID 1856 wrote to memory of 4812	1856	cc582748b0ee318ef0463664a8bddfecb29a289345effd64d88b5327c5b9dd92.exe	kat7271.tmp
PID 1856 wrote to memory of 4812	1856	cc582748b0ee318ef0463664a8bddfecb29a289345effd64d88b5327c5b9dd92.exe	kat7271.tmp
PID 1856 wrote to memory of 4812	1856	cc582748b0ee318ef0463664a8bddfecb29a289345effd64d88b5327c5b9dd92.exe	kat7271.tmp
PID 1856 wrote to memory of 4812	1856	cc582748b0ee318ef0463664a8bddfecb29a289345effd64d88b5327c5b9dd92.exe	kat7271.tmp
PID 1856 wrote to memory of 4812	1856	cc582748b0ee318ef0463664a8bddfecb29a289345effd64d88b5327c5b9dd92.exe	kat7271.tmp
PID 4812 wrote to memory of 4364	4812	kat7271.tmp	cmd.exe
PID 4812 wrote to memory of 4364	4812	kat7271.tmp	cmd.exe
PID 4812 wrote to memory of 4364	4812	kat7271.tmp	cmd.exe
PID 4364 wrote to memory of 4908	4364	cmd.exe	timeout.exe
PID 4364 wrote to memory of 4908	4364	cmd.exe	timeout.exe
PID 4364 wrote to memory of 4908	4364	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\cc582748b0ee318ef0463664a8bddfecb29a289345effd64d88b5327c5b9dd92.exe
"C:\Users\Admin\AppData\Local\Temp\cc582748b0ee318ef0463664a8bddfecb29a289345effd64d88b5327c5b9dd92.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1856

C:\Users\Admin\AppData\Local\Temp\kat7271.tmp
C:\Users\Admin\AppData\Local\Temp\kat7271.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4812

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat7271.tmp" & rd /s /q "C:\ProgramData\FHCGCFHDHIII" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:4364

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
4⤵
- Delays execution with timeout.exe
PID:4908

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\kat7271.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/1856-0-0x00000000025F0000-0x00000000025F1000-memory.dmp

Filesize
4KB

Download
memory/1856-1-0x0000000004180000-0x0000000004293000-memory.dmp

Filesize
1.1MB

Download
memory/1856-9-0x0000000000400000-0x0000000000641000-memory.dmp

Filesize
2.3MB

Download
memory/4812-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4812-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4812-10-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4812-11-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4812-12-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4812-14-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4812-13-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4812-15-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download