stealc | 12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3

General

Target

12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe
Size

1.7MB
MD5

f83c6e690ab67b3f8d222351c3c1b020
SHA1

3492eeb2212322a8c0d15886a2413024da2af90e
SHA256

12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3
SHA512

2826e5e4a9e315a4122afc65b3a726b33187976e53e65b1e0e7e05a54a87ded3097df7b2bc152b1570878cfbba2cd51bfb2cffbaeb6ab77bbc99025854b5330b
SSDEEP

24576:mgdfW911MOeaBUTBozeykDxl2VatG82Ias+ZwBbNO4PLy74L0WukrqLANfu:mgFWDHBDO2ZnIahZw58KhL0cN

Score

10^/10

stealc brat discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

brat

C2

http://185.215.113.206

Attributes

url_path
/c4becf79229cb002.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Stealc family
stealc

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Wine	12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe

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 NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4448	12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
212	4448	WerFault.exe	81

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4448	12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe
4448	12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe
4448	12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe
4448	12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe

C:\Users\Admin\AppData\Local\Temp\12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe
"C:\Users\Admin\AppData\Local\Temp\12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4448
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4448 -s 1476
  2⤵
  - Program crash
  PID:212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 4448 -ip 4448
1⤵
PID:3684

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

5

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4448-0-0x00000000006C0000-0x0000000000D48000-memory.dmp

Filesize
6.5MB

Download
memory/4448-1-0x0000000077904000-0x0000000077906000-memory.dmp

Filesize
8KB

Download
memory/4448-2-0x00000000006C1000-0x00000000006D8000-memory.dmp

Filesize
92KB

Download
memory/4448-3-0x00000000006C0000-0x0000000000D48000-memory.dmp

Filesize
6.5MB

Download
memory/4448-4-0x00000000006C0000-0x0000000000D48000-memory.dmp

Filesize
6.5MB

Download
memory/4448-5-0x00000000006C0000-0x0000000000D48000-memory.dmp

Filesize
6.5MB

Download
memory/4448-6-0x00000000006C0000-0x0000000000D48000-memory.dmp

Filesize
6.5MB

Download
memory/4448-7-0x00000000006C0000-0x0000000000D48000-memory.dmp

Filesize
6.5MB

Download
memory/4448-8-0x00000000006C0000-0x0000000000D48000-memory.dmp

Filesize
6.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads