stealc | 3bbe4740ca668ab4c53de42413bf53ded17ab11c289919b4df497fdef5a9f342

General

Target

3bbe4740ca668ab4c53de42413bf53ded17ab11c289919b4df497fdef5a9f342.exe
Size

5.0MB
MD5

a347b21decb0421332c440e9d2511930
SHA1

304da48e42cc69c6526c6c6c69fd7654f2b05e1b
SHA256

3bbe4740ca668ab4c53de42413bf53ded17ab11c289919b4df497fdef5a9f342
SHA512

7d9105d3eab38e9fe86ed2c2033a01054251774f42e9b413d223c24e1844f7e4a14a78d707086295aee0414c9221407ac972fa442a20c21e79b92492e736cf5d
SSDEEP

49152:NkVYzmVtKKnnbMjTid/lncvxYDJSDXy18bNb8Gm6:NkWzmzKKnbWTid/FOxKC

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__	3bbe4740ca668ab4c53de42413bf53ded17ab11c289919b4df497fdef5a9f342.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	3bbe4740ca668ab4c53de42413bf53ded17ab11c289919b4df497fdef5a9f342.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	3bbe4740ca668ab4c53de42413bf53ded17ab11c289919b4df497fdef5a9f342.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-1-5-21-2039016743-699959520-214465309-1000\Software\Wine	3bbe4740ca668ab4c53de42413bf53ded17ab11c289919b4df497fdef5a9f342.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
1504	3bbe4740ca668ab4c53de42413bf53ded17ab11c289919b4df497fdef5a9f342.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2752	1504	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	3bbe4740ca668ab4c53de42413bf53ded17ab11c289919b4df497fdef5a9f342.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	3bbe4740ca668ab4c53de42413bf53ded17ab11c289919b4df497fdef5a9f342.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	3bbe4740ca668ab4c53de42413bf53ded17ab11c289919b4df497fdef5a9f342.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1504	3bbe4740ca668ab4c53de42413bf53ded17ab11c289919b4df497fdef5a9f342.exe
1504	3bbe4740ca668ab4c53de42413bf53ded17ab11c289919b4df497fdef5a9f342.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1504 wrote to memory of 2752	1504	3bbe4740ca668ab4c53de42413bf53ded17ab11c289919b4df497fdef5a9f342.exe	32
PID 1504 wrote to memory of 2752	1504	3bbe4740ca668ab4c53de42413bf53ded17ab11c289919b4df497fdef5a9f342.exe	32
PID 1504 wrote to memory of 2752	1504	3bbe4740ca668ab4c53de42413bf53ded17ab11c289919b4df497fdef5a9f342.exe	32
PID 1504 wrote to memory of 2752	1504	3bbe4740ca668ab4c53de42413bf53ded17ab11c289919b4df497fdef5a9f342.exe	32

C:\Users\Admin\AppData\Local\Temp\3bbe4740ca668ab4c53de42413bf53ded17ab11c289919b4df497fdef5a9f342.exe
"C:\Users\Admin\AppData\Local\Temp\3bbe4740ca668ab4c53de42413bf53ded17ab11c289919b4df497fdef5a9f342.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:1504
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1504 -s 924
  2⤵
  - Program crash
  PID:2752

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/1504-0-0x0000000000E30000-0x000000000132A000-memory.dmp

Filesize
5.0MB

Download
memory/1504-1-0x0000000076EE0000-0x0000000076EE2000-memory.dmp

Filesize
8KB

Download
memory/1504-2-0x0000000000E31000-0x000000000107A000-memory.dmp

Filesize
2.3MB

Download
memory/1504-3-0x0000000000E30000-0x000000000132A000-memory.dmp

Filesize
5.0MB

Download
memory/1504-4-0x0000000000E30000-0x000000000132A000-memory.dmp

Filesize
5.0MB

Download
memory/1504-5-0x0000000000E31000-0x000000000107A000-memory.dmp

Filesize
2.3MB

Download
memory/1504-6-0x0000000000E30000-0x000000000132A000-memory.dmp

Filesize
5.0MB

Download
memory/1504-7-0x0000000000E30000-0x000000000132A000-memory.dmp

Filesize
5.0MB

Download
memory/1504-8-0x0000000000E30000-0x000000000132A000-memory.dmp

Filesize
5.0MB

Download
memory/1504-9-0x0000000000E30000-0x000000000132A000-memory.dmp

Filesize
5.0MB

Download
memory/1504-10-0x0000000000E30000-0x000000000132A000-memory.dmp

Filesize
5.0MB

Download
memory/1504-11-0x0000000000E30000-0x000000000132A000-memory.dmp

Filesize
5.0MB

Download
memory/1504-13-0x0000000000E30000-0x000000000132A000-memory.dmp

Filesize
5.0MB

Download
memory/1504-14-0x0000000000E31000-0x000000000107A000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads