stealc | 4ebcd8cb5092328c6f200cfcc13602cc38f0da48cf57c8d85824acb5f28cbb09

General

Target

4ebcd8cb5092328c6f200cfcc13602cc38f0da48cf57c8d85824acb5f28cbb09.exe
Size

1.8MB
MD5

3012565ef4865df82ff58a952c8ea4fd
SHA1

3d342040e20e90417a6b9468e01c19c055048bb2
SHA256

4ebcd8cb5092328c6f200cfcc13602cc38f0da48cf57c8d85824acb5f28cbb09
SHA512

836fde54223f16b300d09c72607e8ba057dbbbfe22e192bd7073732084f382a4894d6bc1cb70a383231ee9d6cab7eb50c8248b6ab567767e6f76c76ab0b74f43
SSDEEP

49152:C7VyQvoh7OsOb7WgLvHlxOrIS7bKximbXVdMTe6na:C7fohKlb7WQvHlxcJSXVd0e6a

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__	4ebcd8cb5092328c6f200cfcc13602cc38f0da48cf57c8d85824acb5f28cbb09.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	4ebcd8cb5092328c6f200cfcc13602cc38f0da48cf57c8d85824acb5f28cbb09.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	4ebcd8cb5092328c6f200cfcc13602cc38f0da48cf57c8d85824acb5f28cbb09.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	4ebcd8cb5092328c6f200cfcc13602cc38f0da48cf57c8d85824acb5f28cbb09.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
1120	4ebcd8cb5092328c6f200cfcc13602cc38f0da48cf57c8d85824acb5f28cbb09.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1056	1120	WerFault.exe	27

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	4ebcd8cb5092328c6f200cfcc13602cc38f0da48cf57c8d85824acb5f28cbb09.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	4ebcd8cb5092328c6f200cfcc13602cc38f0da48cf57c8d85824acb5f28cbb09.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	4ebcd8cb5092328c6f200cfcc13602cc38f0da48cf57c8d85824acb5f28cbb09.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1120	4ebcd8cb5092328c6f200cfcc13602cc38f0da48cf57c8d85824acb5f28cbb09.exe
1120	4ebcd8cb5092328c6f200cfcc13602cc38f0da48cf57c8d85824acb5f28cbb09.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1120 wrote to memory of 1056	1120	4ebcd8cb5092328c6f200cfcc13602cc38f0da48cf57c8d85824acb5f28cbb09.exe	31
PID 1120 wrote to memory of 1056	1120	4ebcd8cb5092328c6f200cfcc13602cc38f0da48cf57c8d85824acb5f28cbb09.exe	31
PID 1120 wrote to memory of 1056	1120	4ebcd8cb5092328c6f200cfcc13602cc38f0da48cf57c8d85824acb5f28cbb09.exe	31
PID 1120 wrote to memory of 1056	1120	4ebcd8cb5092328c6f200cfcc13602cc38f0da48cf57c8d85824acb5f28cbb09.exe	31

C:\Users\Admin\AppData\Local\Temp\4ebcd8cb5092328c6f200cfcc13602cc38f0da48cf57c8d85824acb5f28cbb09.exe
"C:\Users\Admin\AppData\Local\Temp\4ebcd8cb5092328c6f200cfcc13602cc38f0da48cf57c8d85824acb5f28cbb09.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:1120
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1120 -s 940
  2⤵
  - Program crash
  PID:1056

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/1120-0-0x00000000010A0000-0x000000000175D000-memory.dmp

Filesize
6.7MB

Download
memory/1120-1-0x0000000077720000-0x0000000077722000-memory.dmp

Filesize
8KB

Download
memory/1120-2-0x00000000010A1000-0x00000000010B8000-memory.dmp

Filesize
92KB

Download
memory/1120-3-0x00000000010A0000-0x000000000175D000-memory.dmp

Filesize
6.7MB

Download
memory/1120-4-0x00000000010A0000-0x000000000175D000-memory.dmp

Filesize
6.7MB

Download
memory/1120-5-0x00000000010A0000-0x000000000175D000-memory.dmp

Filesize
6.7MB

Download
memory/1120-6-0x00000000010A0000-0x000000000175D000-memory.dmp

Filesize
6.7MB

Download
memory/1120-7-0x00000000010A0000-0x000000000175D000-memory.dmp

Filesize
6.7MB

Download
memory/1120-8-0x00000000010A0000-0x000000000175D000-memory.dmp

Filesize
6.7MB

Download
memory/1120-9-0x00000000010A0000-0x000000000175D000-memory.dmp

Filesize
6.7MB

Download
memory/1120-10-0x00000000010A0000-0x000000000175D000-memory.dmp

Filesize
6.7MB

Download
memory/1120-11-0x00000000010A0000-0x000000000175D000-memory.dmp

Filesize
6.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads