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-1-5-21-3692679935-4019334568-335155002-1000\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
2124	12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1624	2124	WerFault.exe	29

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 2 IoCs

pid	Process
2124	12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe
2124	12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 1624	2124	12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe	31
PID 2124 wrote to memory of 1624	2124	12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe	31
PID 2124 wrote to memory of 1624	2124	12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe	31
PID 2124 wrote to memory of 1624	2124	12e1a315a9098572d93983fbaa21865ab98f93649f5199c06e39c9bcfb7e0de3N.exe	31

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
- Suspicious use of WriteProcessMemory
PID:2124
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2124 -s 436
  2⤵
  - Program crash
  PID:1624

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/2124-0-0x0000000000260000-0x00000000008E8000-memory.dmp

Filesize
6.5MB

Download
memory/2124-1-0x0000000077DD0000-0x0000000077DD2000-memory.dmp

Filesize
8KB

Download
memory/2124-2-0x0000000000261000-0x0000000000278000-memory.dmp

Filesize
92KB

Download
memory/2124-3-0x0000000000260000-0x00000000008E8000-memory.dmp

Filesize
6.5MB

Download
memory/2124-4-0x0000000000260000-0x00000000008E8000-memory.dmp

Filesize
6.5MB

Download
memory/2124-5-0x0000000000260000-0x00000000008E8000-memory.dmp

Filesize
6.5MB

Download
memory/2124-6-0x0000000000260000-0x00000000008E8000-memory.dmp

Filesize
6.5MB

Download
memory/2124-7-0x0000000000260000-0x00000000008E8000-memory.dmp

Filesize
6.5MB

Download
memory/2124-8-0x0000000000260000-0x00000000008E8000-memory.dmp

Filesize
6.5MB

Download
memory/2124-9-0x0000000000260000-0x00000000008E8000-memory.dmp

Filesize
6.5MB

Download
memory/2124-10-0x0000000000260000-0x00000000008E8000-memory.dmp

Filesize
6.5MB

Download
memory/2124-12-0x0000000000260000-0x00000000008E8000-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