stealc | 03df2264ac3415631fb4022b3a1b4d8815df67a7f11201299885a88893994bee

General

Target

03df2264ac3415631fb4022b3a1b4d8815df67a7f11201299885a88893994bee.exe
Size

1.7MB
MD5

a2685914d4fceef590bef1e9c298bad2
SHA1

2a5dc8029bb1640a18e280137afeeac7273e7fcf
SHA256

03df2264ac3415631fb4022b3a1b4d8815df67a7f11201299885a88893994bee
SHA512

d31002c0a68531bf75bbfaf880e218b42a10391dac31c0dc9523903e39c0fea65fe41cffd5226eb036073ac1c87e5f458384639973fb5285cf62d0be42fdf924
SSDEEP

24576:QuOhajb6cyjQFYxrWz4KQhl8N6kNAD91JHqOz+rucdFL/yXfyfcB27xnBat9UEQM:rOhBt2QrWOhl84AAJLojL2fIzeiiE

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__	03df2264ac3415631fb4022b3a1b4d8815df67a7f11201299885a88893994bee.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	03df2264ac3415631fb4022b3a1b4d8815df67a7f11201299885a88893994bee.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	03df2264ac3415631fb4022b3a1b4d8815df67a7f11201299885a88893994bee.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-1-5-21-940901362-3608833189-1915618603-1000\Software\Wine	03df2264ac3415631fb4022b3a1b4d8815df67a7f11201299885a88893994bee.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
448	03df2264ac3415631fb4022b3a1b4d8815df67a7f11201299885a88893994bee.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3944	448	WerFault.exe	82

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	03df2264ac3415631fb4022b3a1b4d8815df67a7f11201299885a88893994bee.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	03df2264ac3415631fb4022b3a1b4d8815df67a7f11201299885a88893994bee.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	03df2264ac3415631fb4022b3a1b4d8815df67a7f11201299885a88893994bee.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
448	03df2264ac3415631fb4022b3a1b4d8815df67a7f11201299885a88893994bee.exe
448	03df2264ac3415631fb4022b3a1b4d8815df67a7f11201299885a88893994bee.exe
448	03df2264ac3415631fb4022b3a1b4d8815df67a7f11201299885a88893994bee.exe
448	03df2264ac3415631fb4022b3a1b4d8815df67a7f11201299885a88893994bee.exe

C:\Users\Admin\AppData\Local\Temp\03df2264ac3415631fb4022b3a1b4d8815df67a7f11201299885a88893994bee.exe
"C:\Users\Admin\AppData\Local\Temp\03df2264ac3415631fb4022b3a1b4d8815df67a7f11201299885a88893994bee.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
PID:448
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 448 -s 1396
  2⤵
  - Program crash
  PID:3944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 448 -ip 448
1⤵
PID:4012

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/448-0-0x0000000000100000-0x00000000007A4000-memory.dmp

Filesize
6.6MB

Download
memory/448-1-0x0000000077124000-0x0000000077126000-memory.dmp

Filesize
8KB

Download
memory/448-2-0x0000000000101000-0x0000000000118000-memory.dmp

Filesize
92KB

Download
memory/448-3-0x0000000000100000-0x00000000007A4000-memory.dmp

Filesize
6.6MB

Download
memory/448-4-0x0000000000100000-0x00000000007A4000-memory.dmp

Filesize
6.6MB

Download
memory/448-5-0x0000000000100000-0x00000000007A4000-memory.dmp

Filesize
6.6MB

Download
memory/448-6-0x0000000000100000-0x00000000007A4000-memory.dmp

Filesize
6.6MB

Download
memory/448-7-0x0000000000100000-0x00000000007A4000-memory.dmp

Filesize
6.6MB

Download
memory/448-8-0x0000000000100000-0x00000000007A4000-memory.dmp

Filesize
6.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads