stealc | 4a646bae75d97282a043aa8fc8837ceb407c947c7abeb83c8f2f12dba1a7017c

General

Target

random.exe
Size

1.7MB
MD5

1f8c1aad2738a582d7b549ced4b647ea
SHA1

073bd80fb416fe7cc74244798a0f323dc3907ce5
SHA256

4a646bae75d97282a043aa8fc8837ceb407c947c7abeb83c8f2f12dba1a7017c
SHA512

86cf0c9a3f6133595d3da54abd76a5f46b25d46d1f5d767b2e9f4b081a4e3af36664cf85ca9de49c6dfcf12e2a89d1ebd57e3526bec27949faf972d17733ffc7
SSDEEP

24576:WBpBJtgs4t5+Il89I+mQrC2QAJ+lNDHilLvqJghGg8gH7KRSirZHzUcndgDyF4nk:WRJWs6SmYaA7AG78KwhrWcnAyF4HfG5

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__	random.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	random.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	random.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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Wine	random.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
1288	random.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2772	1288	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	random.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	random.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	random.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1288	random.exe
1288	random.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1288 wrote to memory of 2772	1288	random.exe	32
PID 1288 wrote to memory of 2772	1288	random.exe	32
PID 1288 wrote to memory of 2772	1288	random.exe	32
PID 1288 wrote to memory of 2772	1288	random.exe	32

C:\Users\Admin\AppData\Local\Temp\random.exe
"C:\Users\Admin\AppData\Local\Temp\random.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:1288
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1288 -s 924
  2⤵
  - Program crash
  PID:2772

Network

No results found

185.215.113.206:80

random.exe

152 B
3
185.215.113.206:80

random.exe

152 B
3

No results found

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/1288-0-0x0000000000250000-0x00000000008D9000-memory.dmp

Filesize
6.5MB

Download
memory/1288-1-0x0000000077B90000-0x0000000077B92000-memory.dmp

Filesize
8KB

Download
memory/1288-2-0x0000000000251000-0x0000000000268000-memory.dmp

Filesize
92KB

Download
memory/1288-3-0x0000000000250000-0x00000000008D9000-memory.dmp

Filesize
6.5MB

Download
memory/1288-4-0x0000000000250000-0x00000000008D9000-memory.dmp

Filesize
6.5MB

Download
memory/1288-5-0x0000000000250000-0x00000000008D9000-memory.dmp

Filesize
6.5MB

Download
memory/1288-6-0x0000000000250000-0x00000000008D9000-memory.dmp

Filesize
6.5MB

Download
memory/1288-7-0x0000000000250000-0x00000000008D9000-memory.dmp

Filesize
6.5MB

Download
memory/1288-8-0x0000000000250000-0x00000000008D9000-memory.dmp

Filesize
6.5MB

Download
memory/1288-9-0x0000000000250000-0x00000000008D9000-memory.dmp

Filesize
6.5MB

Download
memory/1288-10-0x0000000000250000-0x00000000008D9000-memory.dmp

Filesize
6.5MB

Download
memory/1288-11-0x0000000000250000-0x00000000008D9000-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

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