stealc | a75e6f408d9ff472c4826b8c0fd2d0c486e0127b6329dbdf49bc1b7f4f7fb879

General

Target

a75e6f408d9ff472c4826b8c0fd2d0c486e0127b6329dbdf49bc1b7f4f7fb879.exe
Size

1.8MB
MD5

9bad3775f7a3115971d323a47fe47663
SHA1

c72b399d93767ca10dd4baefb8721dac94159af0
SHA256

a75e6f408d9ff472c4826b8c0fd2d0c486e0127b6329dbdf49bc1b7f4f7fb879
SHA512

752ada1e4c9af2b67298f57f6ecab94326aed4848704ac390268aac85f6e5e7ba572a8f59aedd34126f173f38fe453d7dc2e5f8ca0316033d4fbc1ff2eab7b89
SSDEEP

24576:fHNAvGsfmW6R1uDr5d6H4u5LzXm1MIAEpZxWa4WQwi6s65DLVFPgffNYute:uvp+R1uvw4On2KWpWGiSbhm1R

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__	a75e6f408d9ff472c4826b8c0fd2d0c486e0127b6329dbdf49bc1b7f4f7fb879.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	a75e6f408d9ff472c4826b8c0fd2d0c486e0127b6329dbdf49bc1b7f4f7fb879.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	a75e6f408d9ff472c4826b8c0fd2d0c486e0127b6329dbdf49bc1b7f4f7fb879.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Wine	a75e6f408d9ff472c4826b8c0fd2d0c486e0127b6329dbdf49bc1b7f4f7fb879.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
1924	a75e6f408d9ff472c4826b8c0fd2d0c486e0127b6329dbdf49bc1b7f4f7fb879.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2636	1924	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	a75e6f408d9ff472c4826b8c0fd2d0c486e0127b6329dbdf49bc1b7f4f7fb879.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	a75e6f408d9ff472c4826b8c0fd2d0c486e0127b6329dbdf49bc1b7f4f7fb879.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	a75e6f408d9ff472c4826b8c0fd2d0c486e0127b6329dbdf49bc1b7f4f7fb879.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1924	a75e6f408d9ff472c4826b8c0fd2d0c486e0127b6329dbdf49bc1b7f4f7fb879.exe
1924	a75e6f408d9ff472c4826b8c0fd2d0c486e0127b6329dbdf49bc1b7f4f7fb879.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 2636	1924	a75e6f408d9ff472c4826b8c0fd2d0c486e0127b6329dbdf49bc1b7f4f7fb879.exe	32
PID 1924 wrote to memory of 2636	1924	a75e6f408d9ff472c4826b8c0fd2d0c486e0127b6329dbdf49bc1b7f4f7fb879.exe	32
PID 1924 wrote to memory of 2636	1924	a75e6f408d9ff472c4826b8c0fd2d0c486e0127b6329dbdf49bc1b7f4f7fb879.exe	32
PID 1924 wrote to memory of 2636	1924	a75e6f408d9ff472c4826b8c0fd2d0c486e0127b6329dbdf49bc1b7f4f7fb879.exe	32

C:\Users\Admin\AppData\Local\Temp\a75e6f408d9ff472c4826b8c0fd2d0c486e0127b6329dbdf49bc1b7f4f7fb879.exe
"C:\Users\Admin\AppData\Local\Temp\a75e6f408d9ff472c4826b8c0fd2d0c486e0127b6329dbdf49bc1b7f4f7fb879.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:1924
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1924 -s 928
  2⤵
  - Program crash
  PID:2636

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/1924-0-0x0000000000FB0000-0x0000000001655000-memory.dmp

Filesize
6.6MB

Download
memory/1924-1-0x0000000000FB0000-0x0000000001655000-memory.dmp

Filesize
6.6MB

Download
memory/1924-2-0x0000000000FB0000-0x0000000001655000-memory.dmp

Filesize
6.6MB

Download
memory/1924-3-0x0000000000FB0000-0x0000000001655000-memory.dmp

Filesize
6.6MB

Download
memory/1924-4-0x0000000000FB0000-0x0000000001655000-memory.dmp

Filesize
6.6MB

Download
memory/1924-5-0x0000000000FB0000-0x0000000001655000-memory.dmp

Filesize
6.6MB

Download
memory/1924-6-0x0000000000FB0000-0x0000000001655000-memory.dmp

Filesize
6.6MB

Download
memory/1924-7-0x0000000000FB0000-0x0000000001655000-memory.dmp

Filesize
6.6MB

Download
memory/1924-8-0x0000000000FB0000-0x0000000001655000-memory.dmp

Filesize
6.6MB

Download
memory/1924-9-0x0000000000FB0000-0x0000000001655000-memory.dmp

Filesize
6.6MB

Download
memory/1924-10-0x0000000000FB0000-0x0000000001655000-memory.dmp

Filesize
6.6MB

Download
memory/1924-11-0x0000000000FB0000-0x0000000001655000-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