stealc | 234280ffc991114a1b74687cdf084ba754d826a3f6026aee65c3f21c21d57cf1

General

Target

234280ffc991114a1b74687cdf084ba754d826a3f6026aee65c3f21c21d57cf1.exe
Size

1.7MB
MD5

b2b25c53809cd8a4d1ad9a4c66dac6cb
SHA1

e1f1d1c7bb790d4d7f43b1ad320815bc3db47286
SHA256

234280ffc991114a1b74687cdf084ba754d826a3f6026aee65c3f21c21d57cf1
SHA512

160f940f14ee5e37d82d4bc308ef659d1be333e04a819580049ccebbeec3dee402af489570a74aeabb6c30342f0bfadf24b738df10f3edc7ba10770d4f59d4fc
SSDEEP

24576:bYhZe1B6+8Q+XSTR9TDQJ29C7C3Sgzbi8ZMSesantnNHUWwdgDiQ8825XdvyvjGQ:uy98Q+Cl9TDpPPq8ZkJxqq38FwjW/eQ

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__	234280ffc991114a1b74687cdf084ba754d826a3f6026aee65c3f21c21d57cf1.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	234280ffc991114a1b74687cdf084ba754d826a3f6026aee65c3f21c21d57cf1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	234280ffc991114a1b74687cdf084ba754d826a3f6026aee65c3f21c21d57cf1.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	234280ffc991114a1b74687cdf084ba754d826a3f6026aee65c3f21c21d57cf1.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
1508	234280ffc991114a1b74687cdf084ba754d826a3f6026aee65c3f21c21d57cf1.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2756	1508	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	234280ffc991114a1b74687cdf084ba754d826a3f6026aee65c3f21c21d57cf1.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	234280ffc991114a1b74687cdf084ba754d826a3f6026aee65c3f21c21d57cf1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	234280ffc991114a1b74687cdf084ba754d826a3f6026aee65c3f21c21d57cf1.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1508	234280ffc991114a1b74687cdf084ba754d826a3f6026aee65c3f21c21d57cf1.exe
1508	234280ffc991114a1b74687cdf084ba754d826a3f6026aee65c3f21c21d57cf1.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1508 wrote to memory of 2756	1508	234280ffc991114a1b74687cdf084ba754d826a3f6026aee65c3f21c21d57cf1.exe	32
PID 1508 wrote to memory of 2756	1508	234280ffc991114a1b74687cdf084ba754d826a3f6026aee65c3f21c21d57cf1.exe	32
PID 1508 wrote to memory of 2756	1508	234280ffc991114a1b74687cdf084ba754d826a3f6026aee65c3f21c21d57cf1.exe	32
PID 1508 wrote to memory of 2756	1508	234280ffc991114a1b74687cdf084ba754d826a3f6026aee65c3f21c21d57cf1.exe	32

C:\Users\Admin\AppData\Local\Temp\234280ffc991114a1b74687cdf084ba754d826a3f6026aee65c3f21c21d57cf1.exe
"C:\Users\Admin\AppData\Local\Temp\234280ffc991114a1b74687cdf084ba754d826a3f6026aee65c3f21c21d57cf1.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:1508
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1508 -s 928
  2⤵
  - Program crash
  PID:2756

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/1508-0-0x00000000010A0000-0x0000000001731000-memory.dmp

Filesize
6.6MB

Download
memory/1508-1-0x0000000077480000-0x0000000077482000-memory.dmp

Filesize
8KB

Download
memory/1508-2-0x00000000010A1000-0x00000000010B8000-memory.dmp

Filesize
92KB

Download
memory/1508-3-0x00000000010A0000-0x0000000001731000-memory.dmp

Filesize
6.6MB

Download
memory/1508-4-0x00000000010A0000-0x0000000001731000-memory.dmp

Filesize
6.6MB

Download
memory/1508-5-0x00000000010A0000-0x0000000001731000-memory.dmp

Filesize
6.6MB

Download
memory/1508-6-0x00000000010A0000-0x0000000001731000-memory.dmp

Filesize
6.6MB

Download
memory/1508-7-0x00000000010A0000-0x0000000001731000-memory.dmp

Filesize
6.6MB

Download
memory/1508-8-0x00000000010A0000-0x0000000001731000-memory.dmp

Filesize
6.6MB

Download
memory/1508-9-0x00000000010A0000-0x0000000001731000-memory.dmp

Filesize
6.6MB

Download
memory/1508-10-0x00000000010A0000-0x0000000001731000-memory.dmp

Filesize
6.6MB

Download
memory/1508-11-0x00000000010A0000-0x0000000001731000-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