stealc | 88d0907e14aee76cdac846db8243f3461b06ec8769eda047497191d02e7bf887

General

Target

88d0907e14aee76cdac846db8243f3461b06ec8769eda047497191d02e7bf887.exe
Size

1.7MB
MD5

bab9f5144b403a4ee4c4341878bba825
SHA1

d909a2a0a5a2f46bd23a0dfb053d513f08453dd1
SHA256

88d0907e14aee76cdac846db8243f3461b06ec8769eda047497191d02e7bf887
SHA512

54a0c368f533cb8fe38063a187ce0f4ac68cde5f7c259b7c756cc09095537c2d70b5d6365481d7db38d45a377c6abfd36a3fa7376bf9a5616dc96777af5b5d14
SSDEEP

24576:K+hr2AdAED9xMjtQwyuhSeOHJUS8lJpzVZa/4j10IFSh/ORTmjmSFvLrIJ12owdi:KudcjtOlgJhVXAUW4cowLO

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__	88d0907e14aee76cdac846db8243f3461b06ec8769eda047497191d02e7bf887.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	88d0907e14aee76cdac846db8243f3461b06ec8769eda047497191d02e7bf887.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	88d0907e14aee76cdac846db8243f3461b06ec8769eda047497191d02e7bf887.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Wine	88d0907e14aee76cdac846db8243f3461b06ec8769eda047497191d02e7bf887.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
1868	88d0907e14aee76cdac846db8243f3461b06ec8769eda047497191d02e7bf887.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1828	1868	WerFault.exe	27

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	88d0907e14aee76cdac846db8243f3461b06ec8769eda047497191d02e7bf887.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	88d0907e14aee76cdac846db8243f3461b06ec8769eda047497191d02e7bf887.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	88d0907e14aee76cdac846db8243f3461b06ec8769eda047497191d02e7bf887.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1868	88d0907e14aee76cdac846db8243f3461b06ec8769eda047497191d02e7bf887.exe
1868	88d0907e14aee76cdac846db8243f3461b06ec8769eda047497191d02e7bf887.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1868 wrote to memory of 1828	1868	88d0907e14aee76cdac846db8243f3461b06ec8769eda047497191d02e7bf887.exe	31
PID 1868 wrote to memory of 1828	1868	88d0907e14aee76cdac846db8243f3461b06ec8769eda047497191d02e7bf887.exe	31
PID 1868 wrote to memory of 1828	1868	88d0907e14aee76cdac846db8243f3461b06ec8769eda047497191d02e7bf887.exe	31
PID 1868 wrote to memory of 1828	1868	88d0907e14aee76cdac846db8243f3461b06ec8769eda047497191d02e7bf887.exe	31

C:\Users\Admin\AppData\Local\Temp\88d0907e14aee76cdac846db8243f3461b06ec8769eda047497191d02e7bf887.exe
"C:\Users\Admin\AppData\Local\Temp\88d0907e14aee76cdac846db8243f3461b06ec8769eda047497191d02e7bf887.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:1868
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1868 -s 928
  2⤵
  - Program crash
  PID:1828

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/1868-0-0x00000000002F0000-0x0000000000982000-memory.dmp

Filesize
6.6MB

Download
memory/1868-1-0x00000000772F0000-0x00000000772F2000-memory.dmp

Filesize
8KB

Download
memory/1868-2-0x00000000002F1000-0x0000000000308000-memory.dmp

Filesize
92KB

Download
memory/1868-3-0x00000000002F0000-0x0000000000982000-memory.dmp

Filesize
6.6MB

Download
memory/1868-4-0x00000000002F0000-0x0000000000982000-memory.dmp

Filesize
6.6MB

Download
memory/1868-5-0x00000000002F0000-0x0000000000982000-memory.dmp

Filesize
6.6MB

Download
memory/1868-6-0x00000000002F0000-0x0000000000982000-memory.dmp

Filesize
6.6MB

Download
memory/1868-7-0x00000000002F0000-0x0000000000982000-memory.dmp

Filesize
6.6MB

Download
memory/1868-8-0x00000000002F0000-0x0000000000982000-memory.dmp

Filesize
6.6MB

Download
memory/1868-9-0x00000000002F0000-0x0000000000982000-memory.dmp

Filesize
6.6MB

Download
memory/1868-10-0x00000000002F0000-0x0000000000982000-memory.dmp

Filesize
6.6MB

Download
memory/1868-11-0x00000000002F0000-0x0000000000982000-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