stealc | 02ef72ce1848869eda35d518c46c9d1ce61475276204b01713c784d425fa0311

General

Target

02ef72ce1848869eda35d518c46c9d1ce61475276204b01713c784d425fa0311.exe
Size

1.7MB
MD5

0ab07f832db786eaabdeb417e19cf33a
SHA1

009629d0f3f238f7848332ea9ae77bccd1ecbe8d
SHA256

02ef72ce1848869eda35d518c46c9d1ce61475276204b01713c784d425fa0311
SHA512

8e6e17d337c8069a1719063bc4968028986329ab28fb357083c9c2296736344b60bbd0fbf833447fd424faaf8b07b8dda30b2333841ffa0659b0083fcc965a7c
SSDEEP

24576:rhIpSzHXP2ydfuHjeS+ifCEbnAj1t3u25KhdYYQbFx8LagXcOp8b0x8mrP4hFY:5z3OyZ5UwtbKhibkLa+d8mMh

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__	02ef72ce1848869eda35d518c46c9d1ce61475276204b01713c784d425fa0311.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	02ef72ce1848869eda35d518c46c9d1ce61475276204b01713c784d425fa0311.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	02ef72ce1848869eda35d518c46c9d1ce61475276204b01713c784d425fa0311.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Wine	02ef72ce1848869eda35d518c46c9d1ce61475276204b01713c784d425fa0311.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
2728	02ef72ce1848869eda35d518c46c9d1ce61475276204b01713c784d425fa0311.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2052	2728	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	02ef72ce1848869eda35d518c46c9d1ce61475276204b01713c784d425fa0311.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	02ef72ce1848869eda35d518c46c9d1ce61475276204b01713c784d425fa0311.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	02ef72ce1848869eda35d518c46c9d1ce61475276204b01713c784d425fa0311.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2728	02ef72ce1848869eda35d518c46c9d1ce61475276204b01713c784d425fa0311.exe
2728	02ef72ce1848869eda35d518c46c9d1ce61475276204b01713c784d425fa0311.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2728 wrote to memory of 2052	2728	02ef72ce1848869eda35d518c46c9d1ce61475276204b01713c784d425fa0311.exe	33
PID 2728 wrote to memory of 2052	2728	02ef72ce1848869eda35d518c46c9d1ce61475276204b01713c784d425fa0311.exe	33
PID 2728 wrote to memory of 2052	2728	02ef72ce1848869eda35d518c46c9d1ce61475276204b01713c784d425fa0311.exe	33
PID 2728 wrote to memory of 2052	2728	02ef72ce1848869eda35d518c46c9d1ce61475276204b01713c784d425fa0311.exe	33

C:\Users\Admin\AppData\Local\Temp\02ef72ce1848869eda35d518c46c9d1ce61475276204b01713c784d425fa0311.exe
"C:\Users\Admin\AppData\Local\Temp\02ef72ce1848869eda35d518c46c9d1ce61475276204b01713c784d425fa0311.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:2728
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2728 -s 924
  2⤵
  - Program crash
  PID:2052

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/2728-0-0x0000000000900000-0x0000000000FA0000-memory.dmp

Filesize
6.6MB

Download
memory/2728-1-0x0000000076F30000-0x0000000076F32000-memory.dmp

Filesize
8KB

Download
memory/2728-2-0x0000000000901000-0x0000000000918000-memory.dmp

Filesize
92KB

Download
memory/2728-3-0x0000000000900000-0x0000000000FA0000-memory.dmp

Filesize
6.6MB

Download
memory/2728-4-0x0000000000900000-0x0000000000FA0000-memory.dmp

Filesize
6.6MB

Download
memory/2728-5-0x0000000000900000-0x0000000000FA0000-memory.dmp

Filesize
6.6MB

Download
memory/2728-6-0x0000000000900000-0x0000000000FA0000-memory.dmp

Filesize
6.6MB

Download
memory/2728-7-0x0000000000900000-0x0000000000FA0000-memory.dmp

Filesize
6.6MB

Download
memory/2728-8-0x0000000000900000-0x0000000000FA0000-memory.dmp

Filesize
6.6MB

Download
memory/2728-9-0x0000000000900000-0x0000000000FA0000-memory.dmp

Filesize
6.6MB

Download
memory/2728-10-0x0000000000900000-0x0000000000FA0000-memory.dmp

Filesize
6.6MB

Download
memory/2728-11-0x0000000000900000-0x0000000000FA0000-memory.dmp

Filesize
6.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads