stealc | 2baa3c3f5a7a820dddcb4d8c361cd7b6fa5d14f7a1b0ed4c8b60c1e627d493d2

General

Target

2baa3c3f5a7a820dddcb4d8c361cd7b6fa5d14f7a1b0ed4c8b60c1e627d493d2.exe
Size

1.8MB
MD5

eef42eb83a04eeaa34e9359d7929a3c8
SHA1

5994d5d39e688af5b0df6ecb0f983865a1c4bda4
SHA256

2baa3c3f5a7a820dddcb4d8c361cd7b6fa5d14f7a1b0ed4c8b60c1e627d493d2
SHA512

9961ea4d802f67ee5fea7384515a3ba3f4bbef51180f7567990700f9c25f62b18149ff7b94a066474e5ed8aadcc87938e06d511f0360dcaeac916928ad18bb04
SSDEEP

49152:YdTVnweyOsMQgy/R4QivU99KAHVswBBJ:AwdCQ72QimKoBJ

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__	2baa3c3f5a7a820dddcb4d8c361cd7b6fa5d14f7a1b0ed4c8b60c1e627d493d2.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	2baa3c3f5a7a820dddcb4d8c361cd7b6fa5d14f7a1b0ed4c8b60c1e627d493d2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	2baa3c3f5a7a820dddcb4d8c361cd7b6fa5d14f7a1b0ed4c8b60c1e627d493d2.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-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	2baa3c3f5a7a820dddcb4d8c361cd7b6fa5d14f7a1b0ed4c8b60c1e627d493d2.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
2028	2baa3c3f5a7a820dddcb4d8c361cd7b6fa5d14f7a1b0ed4c8b60c1e627d493d2.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2828	2028	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	2baa3c3f5a7a820dddcb4d8c361cd7b6fa5d14f7a1b0ed4c8b60c1e627d493d2.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	2baa3c3f5a7a820dddcb4d8c361cd7b6fa5d14f7a1b0ed4c8b60c1e627d493d2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2baa3c3f5a7a820dddcb4d8c361cd7b6fa5d14f7a1b0ed4c8b60c1e627d493d2.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2028	2baa3c3f5a7a820dddcb4d8c361cd7b6fa5d14f7a1b0ed4c8b60c1e627d493d2.exe
2028	2baa3c3f5a7a820dddcb4d8c361cd7b6fa5d14f7a1b0ed4c8b60c1e627d493d2.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2028 wrote to memory of 2828	2028	2baa3c3f5a7a820dddcb4d8c361cd7b6fa5d14f7a1b0ed4c8b60c1e627d493d2.exe	32
PID 2028 wrote to memory of 2828	2028	2baa3c3f5a7a820dddcb4d8c361cd7b6fa5d14f7a1b0ed4c8b60c1e627d493d2.exe	32
PID 2028 wrote to memory of 2828	2028	2baa3c3f5a7a820dddcb4d8c361cd7b6fa5d14f7a1b0ed4c8b60c1e627d493d2.exe	32
PID 2028 wrote to memory of 2828	2028	2baa3c3f5a7a820dddcb4d8c361cd7b6fa5d14f7a1b0ed4c8b60c1e627d493d2.exe	32

C:\Users\Admin\AppData\Local\Temp\2baa3c3f5a7a820dddcb4d8c361cd7b6fa5d14f7a1b0ed4c8b60c1e627d493d2.exe
"C:\Users\Admin\AppData\Local\Temp\2baa3c3f5a7a820dddcb4d8c361cd7b6fa5d14f7a1b0ed4c8b60c1e627d493d2.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:2028
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2028 -s 928
  2⤵
  - Program crash
  PID:2828

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/2028-0-0x0000000001270000-0x0000000001921000-memory.dmp

Filesize
6.7MB

Download
memory/2028-1-0x0000000077660000-0x0000000077662000-memory.dmp

Filesize
8KB

Download
memory/2028-2-0x0000000001271000-0x0000000001288000-memory.dmp

Filesize
92KB

Download
memory/2028-3-0x0000000001270000-0x0000000001921000-memory.dmp

Filesize
6.7MB

Download
memory/2028-4-0x0000000001270000-0x0000000001921000-memory.dmp

Filesize
6.7MB

Download
memory/2028-5-0x0000000001270000-0x0000000001921000-memory.dmp

Filesize
6.7MB

Download
memory/2028-6-0x0000000001270000-0x0000000001921000-memory.dmp

Filesize
6.7MB

Download
memory/2028-7-0x0000000001270000-0x0000000001921000-memory.dmp

Filesize
6.7MB

Download
memory/2028-8-0x0000000001270000-0x0000000001921000-memory.dmp

Filesize
6.7MB

Download
memory/2028-9-0x0000000001270000-0x0000000001921000-memory.dmp

Filesize
6.7MB

Download
memory/2028-10-0x0000000001270000-0x0000000001921000-memory.dmp

Filesize
6.7MB

Download
memory/2028-11-0x0000000001270000-0x0000000001921000-memory.dmp

Filesize
6.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads