stealc | cb3d56ebb17f2a8101c3c0c8e49f97da0dd2e57047a47d3a5469759824d573d1

General

Target

cb3d56ebb17f2a8101c3c0c8e49f97da0dd2e57047a47d3a5469759824d573d1.exe
Size

1.7MB
MD5

1e2cd841291b37908bb8f53ac3b9ee54
SHA1

dc08f9ab49a294d55aa22b86406f24f8a4f06ee9
SHA256

cb3d56ebb17f2a8101c3c0c8e49f97da0dd2e57047a47d3a5469759824d573d1
SHA512

3264cf6a973b89a23b0755ba7a5fe49819d5acd59c2d908c6135f0142c9f985b4825b8e7e81d0f09d14faa05f57af2daa6ffc0ba372aaacc6c8b8f7adae28c94
SSDEEP

49152:ANEUnvh+177lpgB49uzP1hIDuDwbM26E4:4ng17hHZDH4z

Score

10^/10

stealc brat defense_evasion discovery 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

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	cb3d56ebb17f2a8101c3c0c8e49f97da0dd2e57047a47d3a5469759824d573d1.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	cb3d56ebb17f2a8101c3c0c8e49f97da0dd2e57047a47d3a5469759824d573d1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	cb3d56ebb17f2a8101c3c0c8e49f97da0dd2e57047a47d3a5469759824d573d1.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.

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	cb3d56ebb17f2a8101c3c0c8e49f97da0dd2e57047a47d3a5469759824d573d1.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
2204	cb3d56ebb17f2a8101c3c0c8e49f97da0dd2e57047a47d3a5469759824d573d1.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2620	2204	WerFault.exe	30

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	cb3d56ebb17f2a8101c3c0c8e49f97da0dd2e57047a47d3a5469759824d573d1.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	cb3d56ebb17f2a8101c3c0c8e49f97da0dd2e57047a47d3a5469759824d573d1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	cb3d56ebb17f2a8101c3c0c8e49f97da0dd2e57047a47d3a5469759824d573d1.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2204	cb3d56ebb17f2a8101c3c0c8e49f97da0dd2e57047a47d3a5469759824d573d1.exe
2204	cb3d56ebb17f2a8101c3c0c8e49f97da0dd2e57047a47d3a5469759824d573d1.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 2620	2204	cb3d56ebb17f2a8101c3c0c8e49f97da0dd2e57047a47d3a5469759824d573d1.exe	32
PID 2204 wrote to memory of 2620	2204	cb3d56ebb17f2a8101c3c0c8e49f97da0dd2e57047a47d3a5469759824d573d1.exe	32
PID 2204 wrote to memory of 2620	2204	cb3d56ebb17f2a8101c3c0c8e49f97da0dd2e57047a47d3a5469759824d573d1.exe	32
PID 2204 wrote to memory of 2620	2204	cb3d56ebb17f2a8101c3c0c8e49f97da0dd2e57047a47d3a5469759824d573d1.exe	32

C:\Users\Admin\AppData\Local\Temp\cb3d56ebb17f2a8101c3c0c8e49f97da0dd2e57047a47d3a5469759824d573d1.exe
"C:\Users\Admin\AppData\Local\Temp\cb3d56ebb17f2a8101c3c0c8e49f97da0dd2e57047a47d3a5469759824d573d1.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:2204
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2204 -s 928
  2⤵
  - Program crash
  PID:2620

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/2204-0-0x0000000001320000-0x0000000001997000-memory.dmp

Filesize
6.5MB

Download
memory/2204-2-0x0000000001321000-0x0000000001338000-memory.dmp

Filesize
92KB

Download
memory/2204-3-0x0000000001320000-0x0000000001997000-memory.dmp

Filesize
6.5MB

Download
memory/2204-1-0x00000000777C0000-0x00000000777C2000-memory.dmp

Filesize
8KB

Download
memory/2204-4-0x0000000001320000-0x0000000001997000-memory.dmp

Filesize
6.5MB

Download
memory/2204-5-0x0000000001320000-0x0000000001997000-memory.dmp

Filesize
6.5MB

Download
memory/2204-6-0x0000000001320000-0x0000000001997000-memory.dmp

Filesize
6.5MB

Download
memory/2204-7-0x0000000001320000-0x0000000001997000-memory.dmp

Filesize
6.5MB

Download
memory/2204-8-0x0000000001320000-0x0000000001997000-memory.dmp

Filesize
6.5MB

Download
memory/2204-9-0x0000000001320000-0x0000000001997000-memory.dmp

Filesize
6.5MB

Download
memory/2204-10-0x0000000001320000-0x0000000001997000-memory.dmp

Filesize
6.5MB

Download
memory/2204-11-0x0000000001320000-0x0000000001997000-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