stealc | 66ef253d873fe7b0ec0819e227ad414ba790323cf22768e1d77b8bbb60b5763d

General

Target

66ef253d873fe7b0ec0819e227ad414ba790323cf22768e1d77b8bbb60b5763d.exe
Size

1.7MB
MD5

1c9d2ce02cf2db4e31c233b989e19481
SHA1

27288ea0eed37f5bfc90821579adc3d43bde44bd
SHA256

66ef253d873fe7b0ec0819e227ad414ba790323cf22768e1d77b8bbb60b5763d
SHA512

925562d14ab4cc118ffd66ff0532409b3970c4b7de84bdc9c59a32872c4628f530e696a422e67f8d4a7d9c6232ad0e5cef8b2cf07be464d4373aa2ddee02b58c
SSDEEP

24576:I2+fxEtozb6GS9f1z9m9ag3RX++lv6+rNA6lBNkPFRRCjviiTxLsFX1R/8OBO2v:EEtHGo1ZmRlvle6lBeWiQe7O

Score

10^/10

stealc reno defense_evasion discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

reno

C2

http://185.215.113.115

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__	66ef253d873fe7b0ec0819e227ad414ba790323cf22768e1d77b8bbb60b5763d.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	66ef253d873fe7b0ec0819e227ad414ba790323cf22768e1d77b8bbb60b5763d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	66ef253d873fe7b0ec0819e227ad414ba790323cf22768e1d77b8bbb60b5763d.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Wine	66ef253d873fe7b0ec0819e227ad414ba790323cf22768e1d77b8bbb60b5763d.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
2552	66ef253d873fe7b0ec0819e227ad414ba790323cf22768e1d77b8bbb60b5763d.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1332	2552	WerFault.exe	27

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	66ef253d873fe7b0ec0819e227ad414ba790323cf22768e1d77b8bbb60b5763d.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	66ef253d873fe7b0ec0819e227ad414ba790323cf22768e1d77b8bbb60b5763d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	66ef253d873fe7b0ec0819e227ad414ba790323cf22768e1d77b8bbb60b5763d.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2552	66ef253d873fe7b0ec0819e227ad414ba790323cf22768e1d77b8bbb60b5763d.exe
2552	66ef253d873fe7b0ec0819e227ad414ba790323cf22768e1d77b8bbb60b5763d.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2552 wrote to memory of 1332	2552	66ef253d873fe7b0ec0819e227ad414ba790323cf22768e1d77b8bbb60b5763d.exe	31
PID 2552 wrote to memory of 1332	2552	66ef253d873fe7b0ec0819e227ad414ba790323cf22768e1d77b8bbb60b5763d.exe	31
PID 2552 wrote to memory of 1332	2552	66ef253d873fe7b0ec0819e227ad414ba790323cf22768e1d77b8bbb60b5763d.exe	31
PID 2552 wrote to memory of 1332	2552	66ef253d873fe7b0ec0819e227ad414ba790323cf22768e1d77b8bbb60b5763d.exe	31

C:\Users\Admin\AppData\Local\Temp\66ef253d873fe7b0ec0819e227ad414ba790323cf22768e1d77b8bbb60b5763d.exe
"C:\Users\Admin\AppData\Local\Temp\66ef253d873fe7b0ec0819e227ad414ba790323cf22768e1d77b8bbb60b5763d.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:2552
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2552 -s 924
  2⤵
  - Program crash
  PID:1332

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/2552-0-0x0000000000C00000-0x0000000001292000-memory.dmp

Filesize
6.6MB

Download
memory/2552-1-0x0000000000C00000-0x0000000001292000-memory.dmp

Filesize
6.6MB

Download
memory/2552-2-0x0000000000C00000-0x0000000001292000-memory.dmp

Filesize
6.6MB

Download
memory/2552-3-0x0000000000C00000-0x0000000001292000-memory.dmp

Filesize
6.6MB

Download
memory/2552-4-0x0000000000C00000-0x0000000001292000-memory.dmp

Filesize
6.6MB

Download
memory/2552-6-0x0000000000C00000-0x0000000001292000-memory.dmp

Filesize
6.6MB

Download
memory/2552-5-0x0000000000C00000-0x0000000001292000-memory.dmp

Filesize
6.6MB

Download
memory/2552-7-0x0000000000C00000-0x0000000001292000-memory.dmp

Filesize
6.6MB

Download
memory/2552-8-0x0000000000C00000-0x0000000001292000-memory.dmp

Filesize
6.6MB

Download
memory/2552-9-0x0000000000C00000-0x0000000001292000-memory.dmp

Filesize
6.6MB

Download
memory/2552-10-0x0000000000C00000-0x0000000001292000-memory.dmp

Filesize
6.6MB

Download
memory/2552-11-0x0000000000C00000-0x0000000001292000-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