stealc | f7f5bd2daefbacddbdad2e23c43f1d43558baf6ebe50843db51f20491d5f7263

General

Target

f7f5bd2daefbacddbdad2e23c43f1d43558baf6ebe50843db51f20491d5f7263.exe
Size

5.0MB
MD5

8a52c9727ba14d8af880136b6212ca7c
SHA1

a5f3dff5f697ca064c8bdc020fa2209a16ed9124
SHA256

f7f5bd2daefbacddbdad2e23c43f1d43558baf6ebe50843db51f20491d5f7263
SHA512

b43ee411e3fd04bb5031af9490411e4e3cf85a8f4646099a29ae83a884453bbf86e85565facf7a2d93411c6d41fbf32dd556de398f0fa49bfe21135f12e02868
SSDEEP

49152:LqambSVCe0qJm465b0VHmf44Y7l5eBeNJgedcLkTZ:LqasSQe0q44MQ5O4n7SB0JlAkTZ

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__	f7f5bd2daefbacddbdad2e23c43f1d43558baf6ebe50843db51f20491d5f7263.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	f7f5bd2daefbacddbdad2e23c43f1d43558baf6ebe50843db51f20491d5f7263.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f7f5bd2daefbacddbdad2e23c43f1d43558baf6ebe50843db51f20491d5f7263.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-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	f7f5bd2daefbacddbdad2e23c43f1d43558baf6ebe50843db51f20491d5f7263.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
1916	f7f5bd2daefbacddbdad2e23c43f1d43558baf6ebe50843db51f20491d5f7263.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2608	1916	WerFault.exe	30

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	f7f5bd2daefbacddbdad2e23c43f1d43558baf6ebe50843db51f20491d5f7263.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f7f5bd2daefbacddbdad2e23c43f1d43558baf6ebe50843db51f20491d5f7263.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	f7f5bd2daefbacddbdad2e23c43f1d43558baf6ebe50843db51f20491d5f7263.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1916	f7f5bd2daefbacddbdad2e23c43f1d43558baf6ebe50843db51f20491d5f7263.exe
1916	f7f5bd2daefbacddbdad2e23c43f1d43558baf6ebe50843db51f20491d5f7263.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1916 wrote to memory of 2608	1916	f7f5bd2daefbacddbdad2e23c43f1d43558baf6ebe50843db51f20491d5f7263.exe	32
PID 1916 wrote to memory of 2608	1916	f7f5bd2daefbacddbdad2e23c43f1d43558baf6ebe50843db51f20491d5f7263.exe	32
PID 1916 wrote to memory of 2608	1916	f7f5bd2daefbacddbdad2e23c43f1d43558baf6ebe50843db51f20491d5f7263.exe	32
PID 1916 wrote to memory of 2608	1916	f7f5bd2daefbacddbdad2e23c43f1d43558baf6ebe50843db51f20491d5f7263.exe	32

C:\Users\Admin\AppData\Local\Temp\f7f5bd2daefbacddbdad2e23c43f1d43558baf6ebe50843db51f20491d5f7263.exe
"C:\Users\Admin\AppData\Local\Temp\f7f5bd2daefbacddbdad2e23c43f1d43558baf6ebe50843db51f20491d5f7263.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:1916
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1916 -s 928
  2⤵
  - Program crash
  PID:2608

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/1916-0-0x0000000001330000-0x000000000182B000-memory.dmp

Filesize
5.0MB

Download
memory/1916-1-0x0000000077420000-0x0000000077422000-memory.dmp

Filesize
8KB

Download
memory/1916-2-0x0000000001331000-0x000000000157A000-memory.dmp

Filesize
2.3MB

Download
memory/1916-3-0x0000000001330000-0x000000000182B000-memory.dmp

Filesize
5.0MB

Download
memory/1916-4-0x0000000001330000-0x000000000182B000-memory.dmp

Filesize
5.0MB

Download
memory/1916-5-0x0000000001331000-0x000000000157A000-memory.dmp

Filesize
2.3MB

Download
memory/1916-6-0x0000000001330000-0x000000000182B000-memory.dmp

Filesize
5.0MB

Download
memory/1916-7-0x0000000001330000-0x000000000182B000-memory.dmp

Filesize
5.0MB

Download
memory/1916-8-0x0000000001330000-0x000000000182B000-memory.dmp

Filesize
5.0MB

Download
memory/1916-9-0x0000000001330000-0x000000000182B000-memory.dmp

Filesize
5.0MB

Download
memory/1916-10-0x0000000001330000-0x000000000182B000-memory.dmp

Filesize
5.0MB

Download
memory/1916-11-0x0000000001330000-0x000000000182B000-memory.dmp

Filesize
5.0MB

Download
memory/1916-12-0x0000000001330000-0x000000000182B000-memory.dmp

Filesize
5.0MB

Download
memory/1916-13-0x0000000001331000-0x000000000157A000-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