stealc | 4263bde1b23b0124b475c08c4748daeb1b01eaf7d003b9450c69cdee25549d8d

General

Target

4263bde1b23b0124b475c08c4748daeb1b01eaf7d003b9450c69cdee25549d8d.exe
Size

2.0MB
MD5

7ca41de791791686a7161f1fb243ef60
SHA1

30c5de84df33ae833cec1f990c7567b4abd140a1
SHA256

4263bde1b23b0124b475c08c4748daeb1b01eaf7d003b9450c69cdee25549d8d
SHA512

b181fc800e12eb597791bc10beb42b206f6fbe133427120750f219b3eee2bc8e1c8e908f2b75d09358b1740e844e9fadbe35c5d28de5738fc7f12fb58d4dc8b9
SSDEEP

49152:7QzHt472DIJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHtCtIuoITsdZ

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

Detect Vidar Stealer 16 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/1292-2-0x0000000004180000-0x00000000042C9000-memory.dmp	family_vidar_v7
behavioral1/memory/3840-10-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3840-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3840-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3840-14-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3840-15-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3840-25-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3840-26-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3840-34-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3840-35-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3840-51-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3840-52-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3840-63-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3840-64-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3840-65-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3840-66-0x0000000000400000-0x0000000000646000-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

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:

kat494D.tmp

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	kat494D.tmp

Executes dropped EXE 1 IoCs

Processes:

kat494D.tmp

pid process

3840 kat494D.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 local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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

pid	process
3840	kat494D.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

4263bde1b23b0124b475c08c4748daeb1b01eaf7d003b9450c69cdee25549d8d.exe

description	pid	process	target process
PID 1292 set thread context of 3840	1292	4263bde1b23b0124b475c08c4748daeb1b01eaf7d003b9450c69cdee25549d8d.exe	kat494D.tmp

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
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:

kat494D.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat494D.tmp
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2864 timeout.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

kat494D.tmp

pid process

3840 kat494D.tmp
3840 kat494D.tmp
3840 kat494D.tmp
3840 kat494D.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat494D.tmp

pid	process
2864	timeout.exe

pid	process
3840	kat494D.tmp
3840	kat494D.tmp
3840	kat494D.tmp
3840	kat494D.tmp

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

4263bde1b23b0124b475c08c4748daeb1b01eaf7d003b9450c69cdee25549d8d.exekat494D.tmpcmd.exe

description	pid	process	target process
PID 1292 wrote to memory of 3840	1292	4263bde1b23b0124b475c08c4748daeb1b01eaf7d003b9450c69cdee25549d8d.exe	kat494D.tmp
PID 1292 wrote to memory of 3840	1292	4263bde1b23b0124b475c08c4748daeb1b01eaf7d003b9450c69cdee25549d8d.exe	kat494D.tmp
PID 1292 wrote to memory of 3840	1292	4263bde1b23b0124b475c08c4748daeb1b01eaf7d003b9450c69cdee25549d8d.exe	kat494D.tmp
PID 1292 wrote to memory of 3840	1292	4263bde1b23b0124b475c08c4748daeb1b01eaf7d003b9450c69cdee25549d8d.exe	kat494D.tmp
PID 1292 wrote to memory of 3840	1292	4263bde1b23b0124b475c08c4748daeb1b01eaf7d003b9450c69cdee25549d8d.exe	kat494D.tmp
PID 1292 wrote to memory of 3840	1292	4263bde1b23b0124b475c08c4748daeb1b01eaf7d003b9450c69cdee25549d8d.exe	kat494D.tmp
PID 1292 wrote to memory of 3840	1292	4263bde1b23b0124b475c08c4748daeb1b01eaf7d003b9450c69cdee25549d8d.exe	kat494D.tmp
PID 1292 wrote to memory of 3840	1292	4263bde1b23b0124b475c08c4748daeb1b01eaf7d003b9450c69cdee25549d8d.exe	kat494D.tmp
PID 3840 wrote to memory of 4608	3840	kat494D.tmp	cmd.exe
PID 3840 wrote to memory of 4608	3840	kat494D.tmp	cmd.exe
PID 3840 wrote to memory of 4608	3840	kat494D.tmp	cmd.exe
PID 4608 wrote to memory of 2864	4608	cmd.exe	timeout.exe
PID 4608 wrote to memory of 2864	4608	cmd.exe	timeout.exe
PID 4608 wrote to memory of 2864	4608	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\4263bde1b23b0124b475c08c4748daeb1b01eaf7d003b9450c69cdee25549d8d.exe
"C:\Users\Admin\AppData\Local\Temp\4263bde1b23b0124b475c08c4748daeb1b01eaf7d003b9450c69cdee25549d8d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1292

C:\Users\Admin\AppData\Local\Temp\kat494D.tmp
C:\Users\Admin\AppData\Local\Temp\kat494D.tmp
2⤵
- Checks computer location settings
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3840

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat494D.tmp" & rd /s /q "C:\ProgramData\BAECFCAAECBG" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:4608

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
4⤵
- Delays execution with timeout.exe
PID:2864

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

4

T1552

Credentials In Files

4

T1552.001

Discovery

Query Registry

3

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

4

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\kat494D.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/1292-0-0x00000000024B0000-0x00000000024B1000-memory.dmp

Filesize
4KB

Download
memory/1292-2-0x0000000004180000-0x00000000042C9000-memory.dmp

Filesize
1.3MB

Download
memory/1292-9-0x0000000000400000-0x0000000000601000-memory.dmp

Filesize
2.0MB

Download
memory/3840-25-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3840-26-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3840-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3840-14-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3840-15-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3840-18-0x000000001B710000-0x000000001B96F000-memory.dmp

Filesize
2.4MB

Download
memory/3840-10-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3840-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3840-34-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3840-35-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3840-51-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3840-52-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3840-63-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3840-64-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3840-65-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3840-66-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads