stealc | 949bf96681405cd718638e5174da3b1db3ed2b6f03cb694cf51ad4e92c660e88

General

Target

949bf96681405cd718638e5174da3b1db3ed2b6f03cb694cf51ad4e92c660e88.exe
Size

1.7MB
MD5

b0ec0b7a3fb5ae516b820051b3cdcfd2
SHA1

1ff5b9cac7cdc4f639ff9b4ac58db838ec726550
SHA256

949bf96681405cd718638e5174da3b1db3ed2b6f03cb694cf51ad4e92c660e88
SHA512

db2ac48867443166f4c24f3b3a67884726b1d210ad52b95559d0d956fcb7da90d9f523e07a81520ae324b051a9d7d0f037a91f794176882a1d10c7e242461817
SSDEEP

49152:Zi3sCMjXSCa4QOt6OfpoRsTQz2ZyGtXnY7Nj:g72wyt6YaRCQyZftM

Score

10^/10

stealc brat discovery evasion 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

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	949bf96681405cd718638e5174da3b1db3ed2b6f03cb694cf51ad4e92c660e88.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	949bf96681405cd718638e5174da3b1db3ed2b6f03cb694cf51ad4e92c660e88.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	949bf96681405cd718638e5174da3b1db3ed2b6f03cb694cf51ad4e92c660e88.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.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Wine	949bf96681405cd718638e5174da3b1db3ed2b6f03cb694cf51ad4e92c660e88.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
2160	949bf96681405cd718638e5174da3b1db3ed2b6f03cb694cf51ad4e92c660e88.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2292	2160	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	949bf96681405cd718638e5174da3b1db3ed2b6f03cb694cf51ad4e92c660e88.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	949bf96681405cd718638e5174da3b1db3ed2b6f03cb694cf51ad4e92c660e88.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	949bf96681405cd718638e5174da3b1db3ed2b6f03cb694cf51ad4e92c660e88.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2160	949bf96681405cd718638e5174da3b1db3ed2b6f03cb694cf51ad4e92c660e88.exe
2160	949bf96681405cd718638e5174da3b1db3ed2b6f03cb694cf51ad4e92c660e88.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2160 wrote to memory of 2292	2160	949bf96681405cd718638e5174da3b1db3ed2b6f03cb694cf51ad4e92c660e88.exe	32
PID 2160 wrote to memory of 2292	2160	949bf96681405cd718638e5174da3b1db3ed2b6f03cb694cf51ad4e92c660e88.exe	32
PID 2160 wrote to memory of 2292	2160	949bf96681405cd718638e5174da3b1db3ed2b6f03cb694cf51ad4e92c660e88.exe	32
PID 2160 wrote to memory of 2292	2160	949bf96681405cd718638e5174da3b1db3ed2b6f03cb694cf51ad4e92c660e88.exe	32

C:\Users\Admin\AppData\Local\Temp\949bf96681405cd718638e5174da3b1db3ed2b6f03cb694cf51ad4e92c660e88.exe
"C:\Users\Admin\AppData\Local\Temp\949bf96681405cd718638e5174da3b1db3ed2b6f03cb694cf51ad4e92c660e88.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:2160
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2160 -s 928
  2⤵
  - Program crash
  PID:2292

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/2160-0-0x0000000000230000-0x00000000008CF000-memory.dmp

Filesize
6.6MB

Download
memory/2160-1-0x0000000077180000-0x0000000077182000-memory.dmp

Filesize
8KB

Download
memory/2160-2-0x0000000000231000-0x0000000000248000-memory.dmp

Filesize
92KB

Download
memory/2160-3-0x0000000000230000-0x00000000008CF000-memory.dmp

Filesize
6.6MB

Download
memory/2160-4-0x0000000000230000-0x00000000008CF000-memory.dmp

Filesize
6.6MB

Download
memory/2160-5-0x0000000000230000-0x00000000008CF000-memory.dmp

Filesize
6.6MB

Download
memory/2160-6-0x0000000000230000-0x00000000008CF000-memory.dmp

Filesize
6.6MB

Download
memory/2160-7-0x0000000000230000-0x00000000008CF000-memory.dmp

Filesize
6.6MB

Download
memory/2160-8-0x0000000000230000-0x00000000008CF000-memory.dmp

Filesize
6.6MB

Download
memory/2160-9-0x0000000000230000-0x00000000008CF000-memory.dmp

Filesize
6.6MB

Download
memory/2160-10-0x0000000000230000-0x00000000008CF000-memory.dmp

Filesize
6.6MB

Download
memory/2160-11-0x0000000000230000-0x00000000008CF000-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