stealc | 594242f39e0a43970c2c6b459baade07c3cdc8df4dcadf89ad6166dc12d5f16c

General

Target

594242f39e0a43970c2c6b459baade07c3cdc8df4dcadf89ad6166dc12d5f16c.exe
Size

4.9MB
MD5

97b80e7a522a3d40515e954a1fb4b428
SHA1

a08336fcd36b3fec4efd009375c57f4e7fa452e7
SHA256

594242f39e0a43970c2c6b459baade07c3cdc8df4dcadf89ad6166dc12d5f16c
SHA512

3c58d0092977242a386107e0d74e376de0131523b139e09ba93d5604637af22017c0ec2359c42d1837f775137432efebd898102ce3dc22e66edb45a5f527a204
SSDEEP

24576:hcdSpdXoWs2ps+xunxcADxJN26yU5fd7Kp3fL1AbtY1W2Pb1eDMcPOwEmyrbvpyL:aWRs+hADNj7KD1V+5WFEfxVzT1wG3

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__	594242f39e0a43970c2c6b459baade07c3cdc8df4dcadf89ad6166dc12d5f16c.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	594242f39e0a43970c2c6b459baade07c3cdc8df4dcadf89ad6166dc12d5f16c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	594242f39e0a43970c2c6b459baade07c3cdc8df4dcadf89ad6166dc12d5f16c.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	594242f39e0a43970c2c6b459baade07c3cdc8df4dcadf89ad6166dc12d5f16c.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
2664	594242f39e0a43970c2c6b459baade07c3cdc8df4dcadf89ad6166dc12d5f16c.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2988	2664	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	594242f39e0a43970c2c6b459baade07c3cdc8df4dcadf89ad6166dc12d5f16c.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	594242f39e0a43970c2c6b459baade07c3cdc8df4dcadf89ad6166dc12d5f16c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	594242f39e0a43970c2c6b459baade07c3cdc8df4dcadf89ad6166dc12d5f16c.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2664	594242f39e0a43970c2c6b459baade07c3cdc8df4dcadf89ad6166dc12d5f16c.exe
2664	594242f39e0a43970c2c6b459baade07c3cdc8df4dcadf89ad6166dc12d5f16c.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2664 wrote to memory of 2988	2664	594242f39e0a43970c2c6b459baade07c3cdc8df4dcadf89ad6166dc12d5f16c.exe	32
PID 2664 wrote to memory of 2988	2664	594242f39e0a43970c2c6b459baade07c3cdc8df4dcadf89ad6166dc12d5f16c.exe	32
PID 2664 wrote to memory of 2988	2664	594242f39e0a43970c2c6b459baade07c3cdc8df4dcadf89ad6166dc12d5f16c.exe	32
PID 2664 wrote to memory of 2988	2664	594242f39e0a43970c2c6b459baade07c3cdc8df4dcadf89ad6166dc12d5f16c.exe	32

C:\Users\Admin\AppData\Local\Temp\594242f39e0a43970c2c6b459baade07c3cdc8df4dcadf89ad6166dc12d5f16c.exe
"C:\Users\Admin\AppData\Local\Temp\594242f39e0a43970c2c6b459baade07c3cdc8df4dcadf89ad6166dc12d5f16c.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:2664
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2664 -s 924
  2⤵
  - Program crash
  PID:2988

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/2664-0-0x0000000000B10000-0x0000000001002000-memory.dmp

Filesize
4.9MB

Download
memory/2664-1-0x0000000077D00000-0x0000000077D02000-memory.dmp

Filesize
8KB

Download
memory/2664-2-0x0000000000B11000-0x0000000000D5A000-memory.dmp

Filesize
2.3MB

Download
memory/2664-3-0x0000000000B10000-0x0000000001002000-memory.dmp

Filesize
4.9MB

Download
memory/2664-4-0x0000000000B10000-0x0000000001002000-memory.dmp

Filesize
4.9MB

Download
memory/2664-5-0x0000000000B11000-0x0000000000D5A000-memory.dmp

Filesize
2.3MB

Download
memory/2664-6-0x0000000000B10000-0x0000000001002000-memory.dmp

Filesize
4.9MB

Download
memory/2664-7-0x0000000000B10000-0x0000000001002000-memory.dmp

Filesize
4.9MB

Download
memory/2664-8-0x0000000000B10000-0x0000000001002000-memory.dmp

Filesize
4.9MB

Download
memory/2664-9-0x0000000000B10000-0x0000000001002000-memory.dmp

Filesize
4.9MB

Download
memory/2664-10-0x0000000000B10000-0x0000000001002000-memory.dmp

Filesize
4.9MB

Download
memory/2664-11-0x0000000000B10000-0x0000000001002000-memory.dmp

Filesize
4.9MB

Download
memory/2664-13-0x0000000000B10000-0x0000000001002000-memory.dmp

Filesize
4.9MB

Download
memory/2664-14-0x0000000000B11000-0x0000000000D5A000-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