stealc | 62fb38475854820cb7511f218b209a3ee10594025f3a1100b501525ff1c144c4

General

Target

62fb38475854820cb7511f218b209a3ee10594025f3a1100b501525ff1c144c4.exe
Size

1.7MB
MD5

c8bee3a59768fed0ed466e1dc8bbc7d1
SHA1

a108208f6c010fd504876ba09ce0bd0433fc4e8a
SHA256

62fb38475854820cb7511f218b209a3ee10594025f3a1100b501525ff1c144c4
SHA512

00e46fca183e0947defa872d5207080c1a1434aee0a1661f32a1761e109625822664e2cedc971d70fe6294a0a1fb1447874efc48a15f50e592048a3b9261491d
SSDEEP

49152:K5zamfZ8oMcza4Otf/1pwvZLoO0d4zlQkI:KBBfZLYxtf/wvRjJQk

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__	62fb38475854820cb7511f218b209a3ee10594025f3a1100b501525ff1c144c4.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	62fb38475854820cb7511f218b209a3ee10594025f3a1100b501525ff1c144c4.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	62fb38475854820cb7511f218b209a3ee10594025f3a1100b501525ff1c144c4.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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Wine	62fb38475854820cb7511f218b209a3ee10594025f3a1100b501525ff1c144c4.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
1728	62fb38475854820cb7511f218b209a3ee10594025f3a1100b501525ff1c144c4.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2288	1728	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	62fb38475854820cb7511f218b209a3ee10594025f3a1100b501525ff1c144c4.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	62fb38475854820cb7511f218b209a3ee10594025f3a1100b501525ff1c144c4.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	62fb38475854820cb7511f218b209a3ee10594025f3a1100b501525ff1c144c4.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1728	62fb38475854820cb7511f218b209a3ee10594025f3a1100b501525ff1c144c4.exe
1728	62fb38475854820cb7511f218b209a3ee10594025f3a1100b501525ff1c144c4.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 2288	1728	62fb38475854820cb7511f218b209a3ee10594025f3a1100b501525ff1c144c4.exe	31
PID 1728 wrote to memory of 2288	1728	62fb38475854820cb7511f218b209a3ee10594025f3a1100b501525ff1c144c4.exe	31
PID 1728 wrote to memory of 2288	1728	62fb38475854820cb7511f218b209a3ee10594025f3a1100b501525ff1c144c4.exe	31
PID 1728 wrote to memory of 2288	1728	62fb38475854820cb7511f218b209a3ee10594025f3a1100b501525ff1c144c4.exe	31

C:\Users\Admin\AppData\Local\Temp\62fb38475854820cb7511f218b209a3ee10594025f3a1100b501525ff1c144c4.exe
"C:\Users\Admin\AppData\Local\Temp\62fb38475854820cb7511f218b209a3ee10594025f3a1100b501525ff1c144c4.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:1728
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1728 -s 916
  2⤵
  - Program crash
  PID:2288

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/1728-0-0x0000000000BE0000-0x0000000001270000-memory.dmp

Filesize
6.6MB

Download
memory/1728-1-0x0000000077470000-0x0000000077472000-memory.dmp

Filesize
8KB

Download
memory/1728-2-0x0000000000BE1000-0x0000000000BF8000-memory.dmp

Filesize
92KB

Download
memory/1728-3-0x0000000000BE0000-0x0000000001270000-memory.dmp

Filesize
6.6MB

Download
memory/1728-4-0x0000000000BE0000-0x0000000001270000-memory.dmp

Filesize
6.6MB

Download
memory/1728-5-0x0000000000BE0000-0x0000000001270000-memory.dmp

Filesize
6.6MB

Download
memory/1728-6-0x0000000000BE0000-0x0000000001270000-memory.dmp

Filesize
6.6MB

Download
memory/1728-7-0x0000000000BE0000-0x0000000001270000-memory.dmp

Filesize
6.6MB

Download
memory/1728-8-0x0000000000BE0000-0x0000000001270000-memory.dmp

Filesize
6.6MB

Download
memory/1728-9-0x0000000000BE0000-0x0000000001270000-memory.dmp

Filesize
6.6MB

Download
memory/1728-10-0x0000000000BE0000-0x0000000001270000-memory.dmp

Filesize
6.6MB

Download
memory/1728-11-0x0000000000BE0000-0x0000000001270000-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