stealc | 0e4673760c64a0792815f9d9562f47346818e54eb29cf1e1d39410fca5f8e00c

General

Target

0e4673760c64a0792815f9d9562f47346818e54eb29cf1e1d39410fca5f8e00c.exe
Size

423KB
MD5

11cb6973434f9c3d70775b9c8fbf048b
SHA1

e3b4918d477e0bcc9a6da4ca9eef0c960ec32278
SHA256

0e4673760c64a0792815f9d9562f47346818e54eb29cf1e1d39410fca5f8e00c
SHA512

428d5c125cc9552e90303bad79762f600b8f45618c852c88ca2c71f5f3eccdebdc7e669df3da97c5bdc8d7aa2e442a4aee2c88e3cf741c092ab4324c0174f0fa
SSDEEP

6144:tqiWRrCHLIo4V1p+a3VyTJQgCb5ntM03fkJSWcUquA+Mb26:/HLIoCmQfntL3fkJDcUq3+

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

Detect Vidar Stealer 11 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/1708-2-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1708-5-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1708-7-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1708-11-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1708-12-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1708-29-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1708-30-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1708-46-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1708-47-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1708-61-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/1708-62-0x0000000000400000-0x0000000000646000-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:

RegAsm.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation RegAsm.exe
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

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

0e4673760c64a0792815f9d9562f47346818e54eb29cf1e1d39410fca5f8e00c.exe

description	pid	process	target process
PID 3764 set thread context of 1708	3764	0e4673760c64a0792815f9d9562f47346818e54eb29cf1e1d39410fca5f8e00c.exe	RegAsm.exe

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:

RegAsm.exe

description ioc process

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

Processes:

timeout.exe

pid process

5000 timeout.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

RegAsm.exe

pid process

1708 RegAsm.exe
1708 RegAsm.exe
1708 RegAsm.exe
1708 RegAsm.exe

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

pid	process
5000	timeout.exe

pid	process
1708	RegAsm.exe
1708	RegAsm.exe
1708	RegAsm.exe
1708	RegAsm.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

0e4673760c64a0792815f9d9562f47346818e54eb29cf1e1d39410fca5f8e00c.exeRegAsm.execmd.exe

description	pid	process	target process
PID 3764 wrote to memory of 1708	3764	0e4673760c64a0792815f9d9562f47346818e54eb29cf1e1d39410fca5f8e00c.exe	RegAsm.exe
PID 3764 wrote to memory of 1708	3764	0e4673760c64a0792815f9d9562f47346818e54eb29cf1e1d39410fca5f8e00c.exe	RegAsm.exe
PID 3764 wrote to memory of 1708	3764	0e4673760c64a0792815f9d9562f47346818e54eb29cf1e1d39410fca5f8e00c.exe	RegAsm.exe
PID 3764 wrote to memory of 1708	3764	0e4673760c64a0792815f9d9562f47346818e54eb29cf1e1d39410fca5f8e00c.exe	RegAsm.exe
PID 3764 wrote to memory of 1708	3764	0e4673760c64a0792815f9d9562f47346818e54eb29cf1e1d39410fca5f8e00c.exe	RegAsm.exe
PID 3764 wrote to memory of 1708	3764	0e4673760c64a0792815f9d9562f47346818e54eb29cf1e1d39410fca5f8e00c.exe	RegAsm.exe
PID 3764 wrote to memory of 1708	3764	0e4673760c64a0792815f9d9562f47346818e54eb29cf1e1d39410fca5f8e00c.exe	RegAsm.exe
PID 3764 wrote to memory of 1708	3764	0e4673760c64a0792815f9d9562f47346818e54eb29cf1e1d39410fca5f8e00c.exe	RegAsm.exe
PID 3764 wrote to memory of 1708	3764	0e4673760c64a0792815f9d9562f47346818e54eb29cf1e1d39410fca5f8e00c.exe	RegAsm.exe
PID 1708 wrote to memory of 2292	1708	RegAsm.exe	cmd.exe
PID 1708 wrote to memory of 2292	1708	RegAsm.exe	cmd.exe
PID 1708 wrote to memory of 2292	1708	RegAsm.exe	cmd.exe
PID 2292 wrote to memory of 5000	2292	cmd.exe	timeout.exe
PID 2292 wrote to memory of 5000	2292	cmd.exe	timeout.exe
PID 2292 wrote to memory of 5000	2292	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\0e4673760c64a0792815f9d9562f47346818e54eb29cf1e1d39410fca5f8e00c.exe
"C:\Users\Admin\AppData\Local\Temp\0e4673760c64a0792815f9d9562f47346818e54eb29cf1e1d39410fca5f8e00c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3764

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
- Checks computer location settings
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1708

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\FBFCGIDAKECG" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:2292

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
4⤵
- Delays execution with timeout.exe
PID:5000

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

memory/1708-11-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1708-14-0x000000001B3B0000-0x000000001B60F000-memory.dmp

Filesize
2.4MB

Download
memory/1708-62-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1708-2-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1708-5-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1708-7-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1708-61-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1708-12-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1708-47-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1708-29-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1708-30-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1708-46-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3764-0-0x0000000000380000-0x0000000000381000-memory.dmp

Filesize
4KB

Download
memory/3764-1-0x0000000000380000-0x0000000000381000-memory.dmp

Filesize
4KB

Download
memory/3764-3-0x0000000000380000-0x0000000000381000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads