stealc | c229d4ccba6715ffbf99e77713ec54e3deb7bfb6e8b64cab2b527d7d6b9e0532

General

Target

c229d4ccba6715ffbf99e77713ec54e3deb7bfb6e8b64cab2b527d7d6b9e0532.exe
Size

1.7MB
MD5

623f81a48ea7998e9077cefe4fc8f753
SHA1

6fcccc22f1c63ce5660ff9fe8a21ff15640fa768
SHA256

c229d4ccba6715ffbf99e77713ec54e3deb7bfb6e8b64cab2b527d7d6b9e0532
SHA512

227e2b69e30c1227dbd256587d7a28b7c4e72aee278ee3f1f8684b51bc3dc7f7ccc4e965e93fdbcd3e243c69ea23effd456dba1fd34363452abcba28314e58e3
SSDEEP

49152:aF92s+t7R8o5vfykH9kzRQRxO7Qxhv10EW0RpzDvhwlW7kC1:aFQVymNdARQIMhLlcWw

Score

10^/10

stealc brat defense_evasion discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

brat

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

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	c229d4ccba6715ffbf99e77713ec54e3deb7bfb6e8b64cab2b527d7d6b9e0532.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\VideoBiosVersion	c229d4ccba6715ffbf99e77713ec54e3deb7bfb6e8b64cab2b527d7d6b9e0532.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	c229d4ccba6715ffbf99e77713ec54e3deb7bfb6e8b64cab2b527d7d6b9e0532.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-1-5-21-2039016743-699959520-214465309-1000\Software\Wine	c229d4ccba6715ffbf99e77713ec54e3deb7bfb6e8b64cab2b527d7d6b9e0532.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
2888	c229d4ccba6715ffbf99e77713ec54e3deb7bfb6e8b64cab2b527d7d6b9e0532.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2616	2888	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	c229d4ccba6715ffbf99e77713ec54e3deb7bfb6e8b64cab2b527d7d6b9e0532.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	c229d4ccba6715ffbf99e77713ec54e3deb7bfb6e8b64cab2b527d7d6b9e0532.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	c229d4ccba6715ffbf99e77713ec54e3deb7bfb6e8b64cab2b527d7d6b9e0532.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2888	c229d4ccba6715ffbf99e77713ec54e3deb7bfb6e8b64cab2b527d7d6b9e0532.exe
2888	c229d4ccba6715ffbf99e77713ec54e3deb7bfb6e8b64cab2b527d7d6b9e0532.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2888 wrote to memory of 2616	2888	c229d4ccba6715ffbf99e77713ec54e3deb7bfb6e8b64cab2b527d7d6b9e0532.exe	32
PID 2888 wrote to memory of 2616	2888	c229d4ccba6715ffbf99e77713ec54e3deb7bfb6e8b64cab2b527d7d6b9e0532.exe	32
PID 2888 wrote to memory of 2616	2888	c229d4ccba6715ffbf99e77713ec54e3deb7bfb6e8b64cab2b527d7d6b9e0532.exe	32
PID 2888 wrote to memory of 2616	2888	c229d4ccba6715ffbf99e77713ec54e3deb7bfb6e8b64cab2b527d7d6b9e0532.exe	32

C:\Users\Admin\AppData\Local\Temp\c229d4ccba6715ffbf99e77713ec54e3deb7bfb6e8b64cab2b527d7d6b9e0532.exe
"C:\Users\Admin\AppData\Local\Temp\c229d4ccba6715ffbf99e77713ec54e3deb7bfb6e8b64cab2b527d7d6b9e0532.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:2888
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2888 -s 932
  2⤵
  - Program crash
  PID:2616

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/2888-0-0x0000000000260000-0x00000000008F3000-memory.dmp

Filesize
6.6MB

Download
memory/2888-1-0x0000000077CB0000-0x0000000077CB2000-memory.dmp

Filesize
8KB

Download
memory/2888-2-0x0000000000261000-0x0000000000278000-memory.dmp

Filesize
92KB

Download
memory/2888-3-0x0000000000260000-0x00000000008F3000-memory.dmp

Filesize
6.6MB

Download
memory/2888-4-0x0000000000260000-0x00000000008F3000-memory.dmp

Filesize
6.6MB

Download
memory/2888-5-0x0000000000260000-0x00000000008F3000-memory.dmp

Filesize
6.6MB

Download
memory/2888-6-0x0000000000260000-0x00000000008F3000-memory.dmp

Filesize
6.6MB

Download
memory/2888-7-0x0000000000260000-0x00000000008F3000-memory.dmp

Filesize
6.6MB

Download
memory/2888-8-0x0000000000260000-0x00000000008F3000-memory.dmp

Filesize
6.6MB

Download
memory/2888-9-0x0000000000260000-0x00000000008F3000-memory.dmp

Filesize
6.6MB

Download
memory/2888-10-0x0000000000260000-0x00000000008F3000-memory.dmp

Filesize
6.6MB

Download
memory/2888-11-0x0000000000260000-0x00000000008F3000-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