stealc | bbe59338533d1e313bd878a3507fdbfe04e7b187d07f154c73c5bfe9c54bf260

General

Target

bbe59338533d1e313bd878a3507fdbfe04e7b187d07f154c73c5bfe9c54bf260.exe
Size

1.7MB
MD5

ce7750d50c56a9cb1e863c7f90cf0030
SHA1

2127ed24bdc4bc37950941376cb25d4b72abaad6
SHA256

bbe59338533d1e313bd878a3507fdbfe04e7b187d07f154c73c5bfe9c54bf260
SHA512

578d9c7063515ba148a9046376a5c18795814c3b729baa72eb4aead14d1f374d8ca5e07a5c0783adfd1d3ac7a96d901c2600cf418ad024708599b74b6f0fce91
SSDEEP

24576:p1Oihl9F65Hoji3BaJWg995vIBtnzsWnsOhxxc+X1CQmXATwSgjdElsoA:p1O2565H8i3Baz93OtnSGo+B04lso

Score

10^/10

stealc brat discovery evasion 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

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	bbe59338533d1e313bd878a3507fdbfe04e7b187d07f154c73c5bfe9c54bf260.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\VideoBiosVersion	bbe59338533d1e313bd878a3507fdbfe04e7b187d07f154c73c5bfe9c54bf260.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	bbe59338533d1e313bd878a3507fdbfe04e7b187d07f154c73c5bfe9c54bf260.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.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Wine	bbe59338533d1e313bd878a3507fdbfe04e7b187d07f154c73c5bfe9c54bf260.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
2988	bbe59338533d1e313bd878a3507fdbfe04e7b187d07f154c73c5bfe9c54bf260.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2636	2988	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	bbe59338533d1e313bd878a3507fdbfe04e7b187d07f154c73c5bfe9c54bf260.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	bbe59338533d1e313bd878a3507fdbfe04e7b187d07f154c73c5bfe9c54bf260.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	bbe59338533d1e313bd878a3507fdbfe04e7b187d07f154c73c5bfe9c54bf260.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2988	bbe59338533d1e313bd878a3507fdbfe04e7b187d07f154c73c5bfe9c54bf260.exe
2988	bbe59338533d1e313bd878a3507fdbfe04e7b187d07f154c73c5bfe9c54bf260.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2988 wrote to memory of 2636	2988	bbe59338533d1e313bd878a3507fdbfe04e7b187d07f154c73c5bfe9c54bf260.exe	32
PID 2988 wrote to memory of 2636	2988	bbe59338533d1e313bd878a3507fdbfe04e7b187d07f154c73c5bfe9c54bf260.exe	32
PID 2988 wrote to memory of 2636	2988	bbe59338533d1e313bd878a3507fdbfe04e7b187d07f154c73c5bfe9c54bf260.exe	32
PID 2988 wrote to memory of 2636	2988	bbe59338533d1e313bd878a3507fdbfe04e7b187d07f154c73c5bfe9c54bf260.exe	32

C:\Users\Admin\AppData\Local\Temp\bbe59338533d1e313bd878a3507fdbfe04e7b187d07f154c73c5bfe9c54bf260.exe
"C:\Users\Admin\AppData\Local\Temp\bbe59338533d1e313bd878a3507fdbfe04e7b187d07f154c73c5bfe9c54bf260.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:2988
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2988 -s 940
  2⤵
  - Program crash
  PID:2636

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/2988-0-0x0000000000D90000-0x0000000001424000-memory.dmp

Filesize
6.6MB

Download
memory/2988-1-0x00000000773F0000-0x00000000773F2000-memory.dmp

Filesize
8KB

Download
memory/2988-2-0x0000000000D91000-0x0000000000DA8000-memory.dmp

Filesize
92KB

Download
memory/2988-3-0x0000000000D90000-0x0000000001424000-memory.dmp

Filesize
6.6MB

Download
memory/2988-4-0x0000000000D90000-0x0000000001424000-memory.dmp

Filesize
6.6MB

Download
memory/2988-5-0x0000000000D90000-0x0000000001424000-memory.dmp

Filesize
6.6MB

Download
memory/2988-6-0x0000000000D90000-0x0000000001424000-memory.dmp

Filesize
6.6MB

Download
memory/2988-7-0x0000000000D90000-0x0000000001424000-memory.dmp

Filesize
6.6MB

Download
memory/2988-8-0x0000000000D90000-0x0000000001424000-memory.dmp

Filesize
6.6MB

Download
memory/2988-9-0x0000000000D90000-0x0000000001424000-memory.dmp

Filesize
6.6MB

Download
memory/2988-10-0x0000000000D90000-0x0000000001424000-memory.dmp

Filesize
6.6MB

Download
memory/2988-11-0x0000000000D90000-0x0000000001424000-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