stealc | ab922f44d7991cf4815b2d264a96f56673cb8f77b0d1be4ceca46ac1f187be04

General

Target

ab922f44d7991cf4815b2d264a96f56673cb8f77b0d1be4ceca46ac1f187be04.exe
Size

5.0MB
MD5

5950e0c3247b78fc41a4c1cdae5135d2
SHA1

c1306d58b6e271c3a4c75529b223baf02d434cfe
SHA256

ab922f44d7991cf4815b2d264a96f56673cb8f77b0d1be4ceca46ac1f187be04
SHA512

18ee7dc2b49397f95b3b83fb5ba4f81a313275c64b069edb2d7a44ecab2d3d48913516d06417a6fc91ecae7380fb293a3317903f8a3305e66c6ed5d8f17cc5f3
SSDEEP

49152:oCUshPQt02tILjD6jAG5Kc+dNBjp6qKooXusZZC:oCUAQt0/LjDAoB/GowuQ

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__	ab922f44d7991cf4815b2d264a96f56673cb8f77b0d1be4ceca46ac1f187be04.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	ab922f44d7991cf4815b2d264a96f56673cb8f77b0d1be4ceca46ac1f187be04.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	ab922f44d7991cf4815b2d264a96f56673cb8f77b0d1be4ceca46ac1f187be04.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	ab922f44d7991cf4815b2d264a96f56673cb8f77b0d1be4ceca46ac1f187be04.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
2376	ab922f44d7991cf4815b2d264a96f56673cb8f77b0d1be4ceca46ac1f187be04.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3052	2376	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	ab922f44d7991cf4815b2d264a96f56673cb8f77b0d1be4ceca46ac1f187be04.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	ab922f44d7991cf4815b2d264a96f56673cb8f77b0d1be4ceca46ac1f187be04.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ab922f44d7991cf4815b2d264a96f56673cb8f77b0d1be4ceca46ac1f187be04.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2376	ab922f44d7991cf4815b2d264a96f56673cb8f77b0d1be4ceca46ac1f187be04.exe
2376	ab922f44d7991cf4815b2d264a96f56673cb8f77b0d1be4ceca46ac1f187be04.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 3052	2376	ab922f44d7991cf4815b2d264a96f56673cb8f77b0d1be4ceca46ac1f187be04.exe	32
PID 2376 wrote to memory of 3052	2376	ab922f44d7991cf4815b2d264a96f56673cb8f77b0d1be4ceca46ac1f187be04.exe	32
PID 2376 wrote to memory of 3052	2376	ab922f44d7991cf4815b2d264a96f56673cb8f77b0d1be4ceca46ac1f187be04.exe	32
PID 2376 wrote to memory of 3052	2376	ab922f44d7991cf4815b2d264a96f56673cb8f77b0d1be4ceca46ac1f187be04.exe	32

C:\Users\Admin\AppData\Local\Temp\ab922f44d7991cf4815b2d264a96f56673cb8f77b0d1be4ceca46ac1f187be04.exe
"C:\Users\Admin\AppData\Local\Temp\ab922f44d7991cf4815b2d264a96f56673cb8f77b0d1be4ceca46ac1f187be04.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:2376
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2376 -s 928
  2⤵
  - Program crash
  PID:3052

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/2376-0-0x00000000012B0000-0x00000000017AD000-memory.dmp

Filesize
5.0MB

Download
memory/2376-1-0x0000000077BF0000-0x0000000077BF2000-memory.dmp

Filesize
8KB

Download
memory/2376-2-0x00000000012B1000-0x00000000014FA000-memory.dmp

Filesize
2.3MB

Download
memory/2376-3-0x00000000012B0000-0x00000000017AD000-memory.dmp

Filesize
5.0MB

Download
memory/2376-4-0x00000000012B0000-0x00000000017AD000-memory.dmp

Filesize
5.0MB

Download
memory/2376-5-0x00000000012B1000-0x00000000014FA000-memory.dmp

Filesize
2.3MB

Download
memory/2376-6-0x00000000012B0000-0x00000000017AD000-memory.dmp

Filesize
5.0MB

Download
memory/2376-7-0x00000000012B0000-0x00000000017AD000-memory.dmp

Filesize
5.0MB

Download
memory/2376-8-0x00000000012B0000-0x00000000017AD000-memory.dmp

Filesize
5.0MB

Download
memory/2376-9-0x00000000012B0000-0x00000000017AD000-memory.dmp

Filesize
5.0MB

Download
memory/2376-10-0x00000000012B0000-0x00000000017AD000-memory.dmp

Filesize
5.0MB

Download
memory/2376-11-0x00000000012B0000-0x00000000017AD000-memory.dmp

Filesize
5.0MB

Download
memory/2376-12-0x00000000012B0000-0x00000000017AD000-memory.dmp

Filesize
5.0MB

Download
memory/2376-13-0x00000000012B1000-0x00000000014FA000-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