stealc | ecb8cfe5d51ff3eff98719dad96cf7d143fb57294d42e2a702b0b179535106a2

General

Target

ecb8cfe5d51ff3eff98719dad96cf7d143fb57294d42e2a702b0b179535106a2.exe
Size

2.8MB
MD5

6bd56ec3800953b10c705363fa41c135
SHA1

a01aaa8823fa117ca7583ca8c4b39c545a0d63d9
SHA256

ecb8cfe5d51ff3eff98719dad96cf7d143fb57294d42e2a702b0b179535106a2
SHA512

b52f55556f001d3e1576f1fd9be57a175f7609f32a64e2c9912a5c0c0b2c4c62f4a8dea470dbb6aae64f0767136909842622c2a6d2befd8aef1126996acb1ecd
SSDEEP

49152:1AMqSN+38/Xk8FhxHnahf0f4SbR3Dkm59ws4/jrAkzkHwPh7:1ArSu8/Xk8Fhx6V0f4SbFz74/PPgHwPB

Score

10^/10

stealc stok discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

stok

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__	ecb8cfe5d51ff3eff98719dad96cf7d143fb57294d42e2a702b0b179535106a2.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	ecb8cfe5d51ff3eff98719dad96cf7d143fb57294d42e2a702b0b179535106a2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	ecb8cfe5d51ff3eff98719dad96cf7d143fb57294d42e2a702b0b179535106a2.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	ecb8cfe5d51ff3eff98719dad96cf7d143fb57294d42e2a702b0b179535106a2.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
2492	ecb8cfe5d51ff3eff98719dad96cf7d143fb57294d42e2a702b0b179535106a2.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1308	2492	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	ecb8cfe5d51ff3eff98719dad96cf7d143fb57294d42e2a702b0b179535106a2.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	ecb8cfe5d51ff3eff98719dad96cf7d143fb57294d42e2a702b0b179535106a2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ecb8cfe5d51ff3eff98719dad96cf7d143fb57294d42e2a702b0b179535106a2.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2492	ecb8cfe5d51ff3eff98719dad96cf7d143fb57294d42e2a702b0b179535106a2.exe
2492	ecb8cfe5d51ff3eff98719dad96cf7d143fb57294d42e2a702b0b179535106a2.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2492 wrote to memory of 1308	2492	ecb8cfe5d51ff3eff98719dad96cf7d143fb57294d42e2a702b0b179535106a2.exe	31
PID 2492 wrote to memory of 1308	2492	ecb8cfe5d51ff3eff98719dad96cf7d143fb57294d42e2a702b0b179535106a2.exe	31
PID 2492 wrote to memory of 1308	2492	ecb8cfe5d51ff3eff98719dad96cf7d143fb57294d42e2a702b0b179535106a2.exe	31
PID 2492 wrote to memory of 1308	2492	ecb8cfe5d51ff3eff98719dad96cf7d143fb57294d42e2a702b0b179535106a2.exe	31

C:\Users\Admin\AppData\Local\Temp\ecb8cfe5d51ff3eff98719dad96cf7d143fb57294d42e2a702b0b179535106a2.exe
"C:\Users\Admin\AppData\Local\Temp\ecb8cfe5d51ff3eff98719dad96cf7d143fb57294d42e2a702b0b179535106a2.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:2492
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2492 -s 436
  2⤵
  - Program crash
  PID:1308

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/2492-0-0x0000000000EA0000-0x00000000013A3000-memory.dmp

Filesize
5.0MB

Download
memory/2492-1-0x0000000077E60000-0x0000000077E62000-memory.dmp

Filesize
8KB

Download
memory/2492-2-0x0000000000EA1000-0x0000000000EB8000-memory.dmp

Filesize
92KB

Download
memory/2492-3-0x0000000000EA0000-0x00000000013A3000-memory.dmp

Filesize
5.0MB

Download
memory/2492-4-0x0000000000EA0000-0x00000000013A3000-memory.dmp

Filesize
5.0MB

Download
memory/2492-5-0x0000000000EA0000-0x00000000013A3000-memory.dmp

Filesize
5.0MB

Download
memory/2492-6-0x0000000000EA0000-0x00000000013A3000-memory.dmp

Filesize
5.0MB

Download
memory/2492-7-0x0000000000EA0000-0x00000000013A3000-memory.dmp

Filesize
5.0MB

Download
memory/2492-8-0x0000000000EA0000-0x00000000013A3000-memory.dmp

Filesize
5.0MB

Download
memory/2492-9-0x0000000000EA0000-0x00000000013A3000-memory.dmp

Filesize
5.0MB

Download
memory/2492-11-0x0000000000EA0000-0x00000000013A3000-memory.dmp

Filesize
5.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads