stealc | c9b7962d520c5a0a1067f8b61c08ed27b23387ee910b2b0f328fee3a3cdab9d3

General

Target

c9b7962d520c5a0a1067f8b61c08ed27b23387ee910b2b0f328fee3a3cdab9d3.exe
Size

4.9MB
MD5

6b80064dc2ce990d86dfe626b049e4fd
SHA1

086b7a4ef8878371aa32673af2365d562f3179d0
SHA256

c9b7962d520c5a0a1067f8b61c08ed27b23387ee910b2b0f328fee3a3cdab9d3
SHA512

38c71885521d916f69d2cf21055d3cf9e212c67c78427aca2fe5559c14fb8e7f065345502f2354567f5fa58c329adeb66d01f911faefa28e34bed94478bd713f
SSDEEP

98304:2qYmylwIJ31NFsPu7MF7ft6N6FxLFxmI:2qYmf7Qk6OF8

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__	c9b7962d520c5a0a1067f8b61c08ed27b23387ee910b2b0f328fee3a3cdab9d3.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	c9b7962d520c5a0a1067f8b61c08ed27b23387ee910b2b0f328fee3a3cdab9d3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	c9b7962d520c5a0a1067f8b61c08ed27b23387ee910b2b0f328fee3a3cdab9d3.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-1-5-21-2039016743-699959520-214465309-1000\Software\Wine	c9b7962d520c5a0a1067f8b61c08ed27b23387ee910b2b0f328fee3a3cdab9d3.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
2756	c9b7962d520c5a0a1067f8b61c08ed27b23387ee910b2b0f328fee3a3cdab9d3.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2100	2756	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	c9b7962d520c5a0a1067f8b61c08ed27b23387ee910b2b0f328fee3a3cdab9d3.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	c9b7962d520c5a0a1067f8b61c08ed27b23387ee910b2b0f328fee3a3cdab9d3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	c9b7962d520c5a0a1067f8b61c08ed27b23387ee910b2b0f328fee3a3cdab9d3.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2756	c9b7962d520c5a0a1067f8b61c08ed27b23387ee910b2b0f328fee3a3cdab9d3.exe
2756	c9b7962d520c5a0a1067f8b61c08ed27b23387ee910b2b0f328fee3a3cdab9d3.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2756 wrote to memory of 2100	2756	c9b7962d520c5a0a1067f8b61c08ed27b23387ee910b2b0f328fee3a3cdab9d3.exe	32
PID 2756 wrote to memory of 2100	2756	c9b7962d520c5a0a1067f8b61c08ed27b23387ee910b2b0f328fee3a3cdab9d3.exe	32
PID 2756 wrote to memory of 2100	2756	c9b7962d520c5a0a1067f8b61c08ed27b23387ee910b2b0f328fee3a3cdab9d3.exe	32
PID 2756 wrote to memory of 2100	2756	c9b7962d520c5a0a1067f8b61c08ed27b23387ee910b2b0f328fee3a3cdab9d3.exe	32

C:\Users\Admin\AppData\Local\Temp\c9b7962d520c5a0a1067f8b61c08ed27b23387ee910b2b0f328fee3a3cdab9d3.exe
"C:\Users\Admin\AppData\Local\Temp\c9b7962d520c5a0a1067f8b61c08ed27b23387ee910b2b0f328fee3a3cdab9d3.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:2756
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2756 -s 924
  2⤵
  - Program crash
  PID:2100

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/2756-0-0x0000000000120000-0x0000000000613000-memory.dmp

Filesize
4.9MB

Download
memory/2756-1-0x0000000077E70000-0x0000000077E72000-memory.dmp

Filesize
8KB

Download
memory/2756-2-0x0000000000121000-0x000000000036A000-memory.dmp

Filesize
2.3MB

Download
memory/2756-3-0x0000000000120000-0x0000000000613000-memory.dmp

Filesize
4.9MB

Download
memory/2756-4-0x0000000000120000-0x0000000000613000-memory.dmp

Filesize
4.9MB

Download
memory/2756-5-0x0000000000121000-0x000000000036A000-memory.dmp

Filesize
2.3MB

Download
memory/2756-6-0x0000000000120000-0x0000000000613000-memory.dmp

Filesize
4.9MB

Download
memory/2756-7-0x0000000000120000-0x0000000000613000-memory.dmp

Filesize
4.9MB

Download
memory/2756-8-0x0000000000120000-0x0000000000613000-memory.dmp

Filesize
4.9MB

Download
memory/2756-9-0x0000000000120000-0x0000000000613000-memory.dmp

Filesize
4.9MB

Download
memory/2756-10-0x0000000000120000-0x0000000000613000-memory.dmp

Filesize
4.9MB

Download
memory/2756-11-0x0000000000120000-0x0000000000613000-memory.dmp

Filesize
4.9MB

Download
memory/2756-12-0x0000000000120000-0x0000000000613000-memory.dmp

Filesize
4.9MB

Download
memory/2756-13-0x0000000000121000-0x000000000036A000-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