stealc | b7eafee6c9c745b54b207f6e10c264a20662715c298394bd8010ae6befb80767

General

Target

b7eafee6c9c745b54b207f6e10c264a20662715c298394bd8010ae6befb80767.exe
Size

1.7MB
MD5

f09e48c537732a4af348cf06a914b18f
SHA1

daffe0df371a7cda4bc9d3684c6d89479f19e3db
SHA256

b7eafee6c9c745b54b207f6e10c264a20662715c298394bd8010ae6befb80767
SHA512

188e59f226b07c0a87e48b56b2422957ebbebfce7a3749af7a2488bcc94925ff3cda7e1a8f4bbef0815089199a1c6e978a930498dc9a80188ecb996e0bcff8a0
SSDEEP

24576:ZF4WuPAManDjddMQnvYHofQzp7S0kt76KEirTBIh/107++goA+cVHT8bYW7KSnua:/uYM2KgAPNS0y3Ei5W6Q8Y2/ujm

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__	b7eafee6c9c745b54b207f6e10c264a20662715c298394bd8010ae6befb80767.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	b7eafee6c9c745b54b207f6e10c264a20662715c298394bd8010ae6befb80767.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b7eafee6c9c745b54b207f6e10c264a20662715c298394bd8010ae6befb80767.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	b7eafee6c9c745b54b207f6e10c264a20662715c298394bd8010ae6befb80767.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
2384	b7eafee6c9c745b54b207f6e10c264a20662715c298394bd8010ae6befb80767.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2764	2384	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	b7eafee6c9c745b54b207f6e10c264a20662715c298394bd8010ae6befb80767.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	b7eafee6c9c745b54b207f6e10c264a20662715c298394bd8010ae6befb80767.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	b7eafee6c9c745b54b207f6e10c264a20662715c298394bd8010ae6befb80767.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2384	b7eafee6c9c745b54b207f6e10c264a20662715c298394bd8010ae6befb80767.exe
2384	b7eafee6c9c745b54b207f6e10c264a20662715c298394bd8010ae6befb80767.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 2764	2384	b7eafee6c9c745b54b207f6e10c264a20662715c298394bd8010ae6befb80767.exe	32
PID 2384 wrote to memory of 2764	2384	b7eafee6c9c745b54b207f6e10c264a20662715c298394bd8010ae6befb80767.exe	32
PID 2384 wrote to memory of 2764	2384	b7eafee6c9c745b54b207f6e10c264a20662715c298394bd8010ae6befb80767.exe	32
PID 2384 wrote to memory of 2764	2384	b7eafee6c9c745b54b207f6e10c264a20662715c298394bd8010ae6befb80767.exe	32

C:\Users\Admin\AppData\Local\Temp\b7eafee6c9c745b54b207f6e10c264a20662715c298394bd8010ae6befb80767.exe
"C:\Users\Admin\AppData\Local\Temp\b7eafee6c9c745b54b207f6e10c264a20662715c298394bd8010ae6befb80767.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:2384
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2384 -s 940
  2⤵
  - Program crash
  PID:2764

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/2384-0-0x0000000001150000-0x00000000017F7000-memory.dmp

Filesize
6.7MB

Download
memory/2384-1-0x00000000773D0000-0x00000000773D2000-memory.dmp

Filesize
8KB

Download
memory/2384-2-0x0000000001151000-0x0000000001168000-memory.dmp

Filesize
92KB

Download
memory/2384-3-0x0000000001150000-0x00000000017F7000-memory.dmp

Filesize
6.7MB

Download
memory/2384-4-0x0000000001150000-0x00000000017F7000-memory.dmp

Filesize
6.7MB

Download
memory/2384-5-0x0000000001150000-0x00000000017F7000-memory.dmp

Filesize
6.7MB

Download
memory/2384-6-0x0000000001150000-0x00000000017F7000-memory.dmp

Filesize
6.7MB

Download
memory/2384-7-0x0000000001150000-0x00000000017F7000-memory.dmp

Filesize
6.7MB

Download
memory/2384-8-0x0000000001150000-0x00000000017F7000-memory.dmp

Filesize
6.7MB

Download
memory/2384-9-0x0000000001150000-0x00000000017F7000-memory.dmp

Filesize
6.7MB

Download
memory/2384-10-0x0000000001150000-0x00000000017F7000-memory.dmp

Filesize
6.7MB

Download
memory/2384-11-0x0000000001150000-0x00000000017F7000-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