stealc | 0f9975d87bd889e21169449c4d05101ee72fb9196ef6ec2f225b6604dfb1f4ff

General

Target

0f9975d87bd889e21169449c4d05101ee72fb9196ef6ec2f225b6604dfb1f4ff.exe
Size

1.8MB
MD5

59c5e15022fc3f65761ad5186d855479
SHA1

3194e851bb800b39e28c61c9d5983f061a67002d
SHA256

0f9975d87bd889e21169449c4d05101ee72fb9196ef6ec2f225b6604dfb1f4ff
SHA512

d19572b11231df9e1fe2029c2ae7610cf153a168677c8393e3926e9d745f2d4f7798805cdeb2f1b45cd0c20eab5e642519c54e38c0183112b38eb6e0f3d5cd0c
SSDEEP

24576:u3ozH3SBka/Kw9HVtYJRmhnZyygb71apYE7bUuK5KUJXZQItDrwLfJgms3eHZNE8:uKSWaywKJRGFJsugXZWFgmNWD

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__	0f9975d87bd889e21169449c4d05101ee72fb9196ef6ec2f225b6604dfb1f4ff.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	0f9975d87bd889e21169449c4d05101ee72fb9196ef6ec2f225b6604dfb1f4ff.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	0f9975d87bd889e21169449c4d05101ee72fb9196ef6ec2f225b6604dfb1f4ff.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Wine	0f9975d87bd889e21169449c4d05101ee72fb9196ef6ec2f225b6604dfb1f4ff.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
2096	0f9975d87bd889e21169449c4d05101ee72fb9196ef6ec2f225b6604dfb1f4ff.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2612	2096	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	0f9975d87bd889e21169449c4d05101ee72fb9196ef6ec2f225b6604dfb1f4ff.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	0f9975d87bd889e21169449c4d05101ee72fb9196ef6ec2f225b6604dfb1f4ff.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	0f9975d87bd889e21169449c4d05101ee72fb9196ef6ec2f225b6604dfb1f4ff.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2096	0f9975d87bd889e21169449c4d05101ee72fb9196ef6ec2f225b6604dfb1f4ff.exe
2096	0f9975d87bd889e21169449c4d05101ee72fb9196ef6ec2f225b6604dfb1f4ff.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2096 wrote to memory of 2612	2096	0f9975d87bd889e21169449c4d05101ee72fb9196ef6ec2f225b6604dfb1f4ff.exe	32
PID 2096 wrote to memory of 2612	2096	0f9975d87bd889e21169449c4d05101ee72fb9196ef6ec2f225b6604dfb1f4ff.exe	32
PID 2096 wrote to memory of 2612	2096	0f9975d87bd889e21169449c4d05101ee72fb9196ef6ec2f225b6604dfb1f4ff.exe	32
PID 2096 wrote to memory of 2612	2096	0f9975d87bd889e21169449c4d05101ee72fb9196ef6ec2f225b6604dfb1f4ff.exe	32

C:\Users\Admin\AppData\Local\Temp\0f9975d87bd889e21169449c4d05101ee72fb9196ef6ec2f225b6604dfb1f4ff.exe
"C:\Users\Admin\AppData\Local\Temp\0f9975d87bd889e21169449c4d05101ee72fb9196ef6ec2f225b6604dfb1f4ff.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:2096
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2096 -s 924
  2⤵
  - Program crash
  PID:2612

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/2096-0-0x00000000011B0000-0x0000000001860000-memory.dmp

Filesize
6.7MB

Download
memory/2096-2-0x00000000011B1000-0x00000000011C8000-memory.dmp

Filesize
92KB

Download
memory/2096-1-0x0000000077110000-0x0000000077112000-memory.dmp

Filesize
8KB

Download
memory/2096-3-0x00000000011B0000-0x0000000001860000-memory.dmp

Filesize
6.7MB

Download
memory/2096-4-0x00000000011B0000-0x0000000001860000-memory.dmp

Filesize
6.7MB

Download
memory/2096-5-0x00000000011B0000-0x0000000001860000-memory.dmp

Filesize
6.7MB

Download
memory/2096-6-0x00000000011B0000-0x0000000001860000-memory.dmp

Filesize
6.7MB

Download
memory/2096-7-0x00000000011B0000-0x0000000001860000-memory.dmp

Filesize
6.7MB

Download
memory/2096-8-0x00000000011B0000-0x0000000001860000-memory.dmp

Filesize
6.7MB

Download
memory/2096-9-0x00000000011B0000-0x0000000001860000-memory.dmp

Filesize
6.7MB

Download
memory/2096-11-0x00000000011B0000-0x0000000001860000-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