stealc | 35eab41584e126f6a9df335ebdb3bdb0f8406a91e99620f7aaea0f0e32e52314

General

Target

random.exe
Size

1.7MB
MD5

a1d508cd0f560187a4eec32172b572ea
SHA1

3bfc9a9695d74c9a884ac886c363b3d4e2e04046
SHA256

35eab41584e126f6a9df335ebdb3bdb0f8406a91e99620f7aaea0f0e32e52314
SHA512

1e3da8cada023e71b58796665dde1353d7f0fed6613b9f542ec6153aae7049c0b72efb98088401264ec004d9d38ecca5d234aaf7d57c778b52cdeb14dc460dde
SSDEEP

24576:nRJRKEiFqtJPXgbD8MmELN8X8UZay0xp6yIBnB74b298WOnSbR/pD2Ekd15iwP8S:jRniiNZMmAI8bBxpcBnB05WJ3Pa1cun

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__	random.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	random.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	random.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-1-5-21-2703099537-420551529-3771253338-1000\Software\Wine	random.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
2328	random.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1872	2328	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	random.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	random.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	random.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2328	random.exe
2328	random.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 1872	2328	random.exe	31
PID 2328 wrote to memory of 1872	2328	random.exe	31
PID 2328 wrote to memory of 1872	2328	random.exe	31
PID 2328 wrote to memory of 1872	2328	random.exe	31

C:\Users\Admin\AppData\Local\Temp\random.exe
"C:\Users\Admin\AppData\Local\Temp\random.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:2328
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2328 -s 932
  2⤵
  - Program crash
  PID:1872

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/2328-0-0x00000000002A0000-0x000000000093B000-memory.dmp

Filesize
6.6MB

Download
memory/2328-1-0x00000000771C0000-0x00000000771C2000-memory.dmp

Filesize
8KB

Download
memory/2328-2-0x00000000002A1000-0x00000000002B8000-memory.dmp

Filesize
92KB

Download
memory/2328-3-0x00000000002A0000-0x000000000093B000-memory.dmp

Filesize
6.6MB

Download
memory/2328-4-0x00000000002A0000-0x000000000093B000-memory.dmp

Filesize
6.6MB

Download
memory/2328-5-0x00000000002A0000-0x000000000093B000-memory.dmp

Filesize
6.6MB

Download
memory/2328-6-0x00000000002A0000-0x000000000093B000-memory.dmp

Filesize
6.6MB

Download
memory/2328-7-0x00000000002A0000-0x000000000093B000-memory.dmp

Filesize
6.6MB

Download
memory/2328-8-0x00000000002A0000-0x000000000093B000-memory.dmp

Filesize
6.6MB

Download
memory/2328-9-0x00000000002A0000-0x000000000093B000-memory.dmp

Filesize
6.6MB

Download
memory/2328-10-0x00000000002A0000-0x000000000093B000-memory.dmp

Filesize
6.6MB

Download
memory/2328-11-0x00000000002A0000-0x000000000093B000-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