stealc | 5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f

Analysis

max time kernel
133s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
01-07-2024 01:43

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General

Target

5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe
Size

2.2MB
MD5

f6c70e61be060afb38a02279082880f4
SHA1

16c5e255fcfe2cea29c1277899f08b80c6f5de04
SHA256

5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f
SHA512

6693199de657802583bd56af51edf90d6f44951df0be69ca54ea7394e201c9cecd75e1948af5e8c14bdca581bae53feac1e92a67819b53e54faa36d3d9b4e363
SSDEEP

24576:Uc0PyhhGkCI1wUL24jtYkYGbawg757CgXueAgXb0U2MZQti1u8LnsDJY6WpEYGYG:UJ0hsA91MPn21tuuIeNHYGY0LzjsJxK

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 16 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/1876-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/1876-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/1876-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3836-2-0x0000000002B40000-0x0000000002C53000-memory.dmp	family_vidar_v7
behavioral1/memory/1876-22-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/1876-23-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/1876-33-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/1876-34-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/1876-42-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/1876-43-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/1876-59-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/1876-60-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/1876-67-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/1876-72-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/1876-73-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/1876-74-0x0000000000400000-0x0000000000648000-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
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

kat4229.tmp

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-4204450073-1267028356-951339405-1000\Control Panel\International\Geo\Nation kat4229.tmp
Executes dropped EXE 1 IoCs

Processes:

kat4229.tmp

pid process

1876 kat4229.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
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
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

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:

5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe

description pid process target process

PID 3836 set thread context of 1876 3836 5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe kat4229.tmp
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4204450073-1267028356-951339405-1000\Control Panel\International\Geo\Nation	kat4229.tmp

pid	process
1876	kat4229.tmp

description	pid	process	target process
PID 3836 set thread context of 1876	3836	5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe	kat4229.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:

kat4229.tmp

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	kat4229.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat4229.tmp

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2928 timeout.exe
Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

kat4229.tmp

pid process

1876 kat4229.tmp
1876 kat4229.tmp
1876 kat4229.tmp
1876 kat4229.tmp
1876 kat4229.tmp
1876 kat4229.tmp
1876 kat4229.tmp
1876 kat4229.tmp

pid	process
2928	timeout.exe

pid	process
1876	kat4229.tmp
1876	kat4229.tmp
1876	kat4229.tmp
1876	kat4229.tmp
1876	kat4229.tmp
1876	kat4229.tmp
1876	kat4229.tmp
1876	kat4229.tmp

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exekat4229.tmpcmd.exe

description	pid	process	target process
PID 3836 wrote to memory of 1876	3836	5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe	kat4229.tmp
PID 3836 wrote to memory of 1876	3836	5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe	kat4229.tmp
PID 3836 wrote to memory of 1876	3836	5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe	kat4229.tmp
PID 3836 wrote to memory of 1876	3836	5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe	kat4229.tmp
PID 3836 wrote to memory of 1876	3836	5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe	kat4229.tmp
PID 3836 wrote to memory of 1876	3836	5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe	kat4229.tmp
PID 3836 wrote to memory of 1876	3836	5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe	kat4229.tmp
PID 3836 wrote to memory of 1876	3836	5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe	kat4229.tmp
PID 1876 wrote to memory of 5036	1876	kat4229.tmp	cmd.exe
PID 1876 wrote to memory of 5036	1876	kat4229.tmp	cmd.exe
PID 1876 wrote to memory of 5036	1876	kat4229.tmp	cmd.exe
PID 5036 wrote to memory of 2928	5036	cmd.exe	timeout.exe
PID 5036 wrote to memory of 2928	5036	cmd.exe	timeout.exe
PID 5036 wrote to memory of 2928	5036	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe
"C:\Users\Admin\AppData\Local\Temp\5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3836

C:\Users\Admin\AppData\Local\Temp\kat4229.tmp
C:\Users\Admin\AppData\Local\Temp\kat4229.tmp
2⤵
- Checks computer location settings
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1876

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4229.tmp" & rd /s /q "C:\ProgramData\GIDHDGCBFBKE" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:5036

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
4⤵
- Delays execution with timeout.exe
PID:2928

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\kat4229.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/1876-60-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1876-59-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1876-25-0x00000000227D0000-0x0000000022A2F000-memory.dmp

Filesize
2.4MB

Download
memory/1876-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1876-33-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1876-73-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1876-22-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1876-23-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1876-10-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1876-74-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1876-42-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1876-34-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1876-43-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1876-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1876-72-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1876-67-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3836-0-0x00000000023F0000-0x00000000023F1000-memory.dmp

Filesize
4KB

Download
memory/3836-9-0x0000000000400000-0x0000000000641000-memory.dmp

Filesize
2.3MB

Download
memory/3836-2-0x0000000002B40000-0x0000000002C53000-memory.dmp

Filesize
1.1MB

Download