stealc | a7f8b342432721e07f208f8d793f5a248e15c22cba255ef6b22f1b572a11b759

General

Target

83a46515e437539d5d00a1ed4d361f3a.exe
Size

5.0MB
MD5

83a46515e437539d5d00a1ed4d361f3a
SHA1

ce89f1c3e1c3e069020db65ae35b5b1c6b4b3d15
SHA256

a7f8b342432721e07f208f8d793f5a248e15c22cba255ef6b22f1b572a11b759
SHA512

3a52653fcdc707572be2405294fc51b46ce15501f6edeeb5af4e845f67551834f0d4b0d8b82e687b5d8d9b5410b5bc4a200d27ee4c936a6db3a167b29a43d9cb
SSDEEP

49152:a5s9bIAUGBCBSP9A7MlYReqYWwDZZorzh67u7DrFP9dO:aqbOGBCcVAglieRZZIzVHrFP

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__	83a46515e437539d5d00a1ed4d361f3a.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	83a46515e437539d5d00a1ed4d361f3a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	83a46515e437539d5d00a1ed4d361f3a.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Wine	83a46515e437539d5d00a1ed4d361f3a.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
2348	83a46515e437539d5d00a1ed4d361f3a.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2548	2348	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	83a46515e437539d5d00a1ed4d361f3a.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	83a46515e437539d5d00a1ed4d361f3a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	83a46515e437539d5d00a1ed4d361f3a.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2348	83a46515e437539d5d00a1ed4d361f3a.exe
2348	83a46515e437539d5d00a1ed4d361f3a.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 2548	2348	83a46515e437539d5d00a1ed4d361f3a.exe	32
PID 2348 wrote to memory of 2548	2348	83a46515e437539d5d00a1ed4d361f3a.exe	32
PID 2348 wrote to memory of 2548	2348	83a46515e437539d5d00a1ed4d361f3a.exe	32
PID 2348 wrote to memory of 2548	2348	83a46515e437539d5d00a1ed4d361f3a.exe	32

C:\Users\Admin\AppData\Local\Temp\83a46515e437539d5d00a1ed4d361f3a.exe
"C:\Users\Admin\AppData\Local\Temp\83a46515e437539d5d00a1ed4d361f3a.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:2348
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2348 -s 932
  2⤵
  - Program crash
  PID:2548

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/2348-0-0x00000000008B0000-0x0000000000DB4000-memory.dmp

Filesize
5.0MB

Download
memory/2348-1-0x0000000077BA0000-0x0000000077BA2000-memory.dmp

Filesize
8KB

Download
memory/2348-2-0x00000000008B1000-0x0000000000AFA000-memory.dmp

Filesize
2.3MB

Download
memory/2348-3-0x00000000008B0000-0x0000000000DB4000-memory.dmp

Filesize
5.0MB

Download
memory/2348-4-0x00000000008B0000-0x0000000000DB4000-memory.dmp

Filesize
5.0MB

Download
memory/2348-5-0x00000000008B1000-0x0000000000AFA000-memory.dmp

Filesize
2.3MB

Download
memory/2348-6-0x00000000008B0000-0x0000000000DB4000-memory.dmp

Filesize
5.0MB

Download
memory/2348-7-0x00000000008B0000-0x0000000000DB4000-memory.dmp

Filesize
5.0MB

Download
memory/2348-8-0x00000000008B0000-0x0000000000DB4000-memory.dmp

Filesize
5.0MB

Download
memory/2348-9-0x00000000008B0000-0x0000000000DB4000-memory.dmp

Filesize
5.0MB

Download
memory/2348-10-0x00000000008B0000-0x0000000000DB4000-memory.dmp

Filesize
5.0MB

Download
memory/2348-11-0x00000000008B0000-0x0000000000DB4000-memory.dmp

Filesize
5.0MB

Download
memory/2348-12-0x00000000008B0000-0x0000000000DB4000-memory.dmp

Filesize
5.0MB

Download
memory/2348-13-0x00000000008B1000-0x0000000000AFA000-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