stealc | e2f9bac4b3acf13d9cb00ece182267ed9e19acfe967dbbdaabf278a732b4b973

General

Target

e2f9bac4b3acf13d9cb00ece182267ed9e19acfe967dbbdaabf278a732b4b973.exe
Size

1.8MB
MD5

c7f5831524d20be3dc55a0fdbeeae6ae
SHA1

76f170b8d3d80a06c51837410591ae733c3ac46e
SHA256

e2f9bac4b3acf13d9cb00ece182267ed9e19acfe967dbbdaabf278a732b4b973
SHA512

191ed3ec14aea521957cd670a03b9e34cc01b7854a4d9ecafafd4fbe90e335a8adc38882b818c9e3b16e24f6f408c538c56fecd9d0c6145d21d834597563fb0b
SSDEEP

24576:DEMhvHDY4gmiXj0/eqaAgjJRRDFzWI07gc910qWhXPGnHts0JFBITqqenHemqa6p:Y6jYfnjJtW3ccT0NhmHtsOFBMF/E6G

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__	e2f9bac4b3acf13d9cb00ece182267ed9e19acfe967dbbdaabf278a732b4b973.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	e2f9bac4b3acf13d9cb00ece182267ed9e19acfe967dbbdaabf278a732b4b973.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	e2f9bac4b3acf13d9cb00ece182267ed9e19acfe967dbbdaabf278a732b4b973.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-1-5-21-1163522206-1469769407-485553996-1000\Software\Wine	e2f9bac4b3acf13d9cb00ece182267ed9e19acfe967dbbdaabf278a732b4b973.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
1544	e2f9bac4b3acf13d9cb00ece182267ed9e19acfe967dbbdaabf278a732b4b973.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2676	1544	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	e2f9bac4b3acf13d9cb00ece182267ed9e19acfe967dbbdaabf278a732b4b973.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	e2f9bac4b3acf13d9cb00ece182267ed9e19acfe967dbbdaabf278a732b4b973.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	e2f9bac4b3acf13d9cb00ece182267ed9e19acfe967dbbdaabf278a732b4b973.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1544	e2f9bac4b3acf13d9cb00ece182267ed9e19acfe967dbbdaabf278a732b4b973.exe
1544	e2f9bac4b3acf13d9cb00ece182267ed9e19acfe967dbbdaabf278a732b4b973.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1544 wrote to memory of 2676	1544	e2f9bac4b3acf13d9cb00ece182267ed9e19acfe967dbbdaabf278a732b4b973.exe	32
PID 1544 wrote to memory of 2676	1544	e2f9bac4b3acf13d9cb00ece182267ed9e19acfe967dbbdaabf278a732b4b973.exe	32
PID 1544 wrote to memory of 2676	1544	e2f9bac4b3acf13d9cb00ece182267ed9e19acfe967dbbdaabf278a732b4b973.exe	32
PID 1544 wrote to memory of 2676	1544	e2f9bac4b3acf13d9cb00ece182267ed9e19acfe967dbbdaabf278a732b4b973.exe	32

C:\Users\Admin\AppData\Local\Temp\e2f9bac4b3acf13d9cb00ece182267ed9e19acfe967dbbdaabf278a732b4b973.exe
"C:\Users\Admin\AppData\Local\Temp\e2f9bac4b3acf13d9cb00ece182267ed9e19acfe967dbbdaabf278a732b4b973.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:1544
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1544 -s 936
  2⤵
  - Program crash
  PID:2676

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/1544-0-0x0000000000140000-0x00000000007EF000-memory.dmp

Filesize
6.7MB

Download
memory/1544-1-0x0000000077270000-0x0000000077272000-memory.dmp

Filesize
8KB

Download
memory/1544-2-0x0000000000141000-0x0000000000158000-memory.dmp

Filesize
92KB

Download
memory/1544-3-0x0000000000140000-0x00000000007EF000-memory.dmp

Filesize
6.7MB

Download
memory/1544-4-0x0000000000140000-0x00000000007EF000-memory.dmp

Filesize
6.7MB

Download
memory/1544-5-0x0000000000140000-0x00000000007EF000-memory.dmp

Filesize
6.7MB

Download
memory/1544-6-0x0000000000140000-0x00000000007EF000-memory.dmp

Filesize
6.7MB

Download
memory/1544-7-0x0000000000140000-0x00000000007EF000-memory.dmp

Filesize
6.7MB

Download
memory/1544-8-0x0000000000140000-0x00000000007EF000-memory.dmp

Filesize
6.7MB

Download
memory/1544-9-0x0000000000140000-0x00000000007EF000-memory.dmp

Filesize
6.7MB

Download
memory/1544-10-0x0000000000140000-0x00000000007EF000-memory.dmp

Filesize
6.7MB

Download
memory/1544-11-0x0000000000140000-0x00000000007EF000-memory.dmp

Filesize
6.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads