stealc | 66ad706bf6d8fd7f00f3ec06d9d421e30c1855105c94d2320e25b3dfce98d7c4

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2025, 13:25

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General

Target

66ad706bf6d8fd7f00f3ec06d9d421e30c1855105c94d2320e25b3dfce98d7c4.exe
Size

1.7MB
MD5

e6cd645a221c12039a9365722fa6430d
SHA1

f711762e81f7d04e1e7bb258cef4443b0048b084
SHA256

66ad706bf6d8fd7f00f3ec06d9d421e30c1855105c94d2320e25b3dfce98d7c4
SHA512

dafb580fc7e88314e80f3bff3df540def474d889170b9b6a6449c1c1969dba0371434d8e933d3ee2c17587413eb03127a6fe01a96fdb8ecfc36b21d45e82342f
SSDEEP

49152:66pp7NvzxvdRvwe5VoJPtBCfXzez+8V2:6kdlXvEJPtw6z+8V

Score

10^/10

stealc reno defense_evasion discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

reno

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__	66ad706bf6d8fd7f00f3ec06d9d421e30c1855105c94d2320e25b3dfce98d7c4.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	66ad706bf6d8fd7f00f3ec06d9d421e30c1855105c94d2320e25b3dfce98d7c4.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	66ad706bf6d8fd7f00f3ec06d9d421e30c1855105c94d2320e25b3dfce98d7c4.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-1-5-21-1170604239-850860757-3112005715-1000\Software\Wine	66ad706bf6d8fd7f00f3ec06d9d421e30c1855105c94d2320e25b3dfce98d7c4.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4112	66ad706bf6d8fd7f00f3ec06d9d421e30c1855105c94d2320e25b3dfce98d7c4.exe

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	66ad706bf6d8fd7f00f3ec06d9d421e30c1855105c94d2320e25b3dfce98d7c4.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4112	66ad706bf6d8fd7f00f3ec06d9d421e30c1855105c94d2320e25b3dfce98d7c4.exe
4112	66ad706bf6d8fd7f00f3ec06d9d421e30c1855105c94d2320e25b3dfce98d7c4.exe

C:\Users\Admin\AppData\Local\Temp\66ad706bf6d8fd7f00f3ec06d9d421e30c1855105c94d2320e25b3dfce98d7c4.exe
"C:\Users\Admin\AppData\Local\Temp\66ad706bf6d8fd7f00f3ec06d9d421e30c1855105c94d2320e25b3dfce98d7c4.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
- Suspicious behavior: EnumeratesProcesses
PID:4112

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4112-0-0x0000000000050000-0x00000000006E2000-memory.dmp

Filesize
6.6MB

Download
memory/4112-1-0x0000000077914000-0x0000000077916000-memory.dmp

Filesize
8KB

Download
memory/4112-2-0x0000000000051000-0x0000000000068000-memory.dmp

Filesize
92KB

Download
memory/4112-3-0x0000000000050000-0x00000000006E2000-memory.dmp

Filesize
6.6MB

Download
memory/4112-4-0x0000000000050000-0x00000000006E2000-memory.dmp

Filesize
6.6MB

Download