stealc | 6b0f895abd9fd90ba2e7226e3a314dd687333329ea102b24db84f940bd9ca799

General

Target

6b0f895abd9fd90ba2e7226e3a314dd687333329ea102b24db84f940bd9ca799.exe
Size

1.7MB
MD5

b237c3b16fa2fd1417db6245d039fe6e
SHA1

fb7906f921e102269b8ba8f599a39b944dcdf73c
SHA256

6b0f895abd9fd90ba2e7226e3a314dd687333329ea102b24db84f940bd9ca799
SHA512

1ae96c09cdef3dca87addd720a72333ece4da42ff0ea4e8faa623d9b1e1ce2d402824b462a881887adae663a48da81384235f83f339ac89e0c844d1563b975ae
SSDEEP

49152:SsST+04NRbexphBRrPDc/blhWSlL9JGMGxy:SsST+04sphE/bXWILaMI

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__	6b0f895abd9fd90ba2e7226e3a314dd687333329ea102b24db84f940bd9ca799.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	6b0f895abd9fd90ba2e7226e3a314dd687333329ea102b24db84f940bd9ca799.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	6b0f895abd9fd90ba2e7226e3a314dd687333329ea102b24db84f940bd9ca799.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-1-5-21-4089630652-1596403869-279772308-1000\Software\Wine	6b0f895abd9fd90ba2e7226e3a314dd687333329ea102b24db84f940bd9ca799.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
464	6b0f895abd9fd90ba2e7226e3a314dd687333329ea102b24db84f940bd9ca799.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3288	464	WerFault.exe	81

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	6b0f895abd9fd90ba2e7226e3a314dd687333329ea102b24db84f940bd9ca799.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	6b0f895abd9fd90ba2e7226e3a314dd687333329ea102b24db84f940bd9ca799.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	6b0f895abd9fd90ba2e7226e3a314dd687333329ea102b24db84f940bd9ca799.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
464	6b0f895abd9fd90ba2e7226e3a314dd687333329ea102b24db84f940bd9ca799.exe
464	6b0f895abd9fd90ba2e7226e3a314dd687333329ea102b24db84f940bd9ca799.exe
464	6b0f895abd9fd90ba2e7226e3a314dd687333329ea102b24db84f940bd9ca799.exe
464	6b0f895abd9fd90ba2e7226e3a314dd687333329ea102b24db84f940bd9ca799.exe

C:\Users\Admin\AppData\Local\Temp\6b0f895abd9fd90ba2e7226e3a314dd687333329ea102b24db84f940bd9ca799.exe
"C:\Users\Admin\AppData\Local\Temp\6b0f895abd9fd90ba2e7226e3a314dd687333329ea102b24db84f940bd9ca799.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
PID:464
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 1480
  2⤵
  - Program crash
  PID:3288

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 464 -ip 464
1⤵
PID:4664

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/464-0-0x00000000009D0000-0x0000000001054000-memory.dmp

Filesize
6.5MB

Download
memory/464-1-0x0000000077A84000-0x0000000077A86000-memory.dmp

Filesize
8KB

Download
memory/464-2-0x00000000009D1000-0x00000000009E8000-memory.dmp

Filesize
92KB

Download
memory/464-3-0x00000000009D0000-0x0000000001054000-memory.dmp

Filesize
6.5MB

Download
memory/464-4-0x00000000009D0000-0x0000000001054000-memory.dmp

Filesize
6.5MB

Download
memory/464-5-0x00000000009D0000-0x0000000001054000-memory.dmp

Filesize
6.5MB

Download
memory/464-6-0x00000000009D0000-0x0000000001054000-memory.dmp

Filesize
6.5MB

Download
memory/464-7-0x00000000009D0000-0x0000000001054000-memory.dmp

Filesize
6.5MB

Download
memory/464-8-0x00000000009D0000-0x0000000001054000-memory.dmp

Filesize
6.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads