stealc | 308d03c0a0145f5b8ec0483534177c69ccf41ec103da8648f5b7fd9de50db2a4

General

Target

308d03c0a0145f5b8ec0483534177c69ccf41ec103da8648f5b7fd9de50db2a4.exe
Size

1.7MB
MD5

1010fe1b9353aa5fdbed0a82c5cc27ea
SHA1

61a021fbdfe2f0a30f35080c9b37901e871f7a55
SHA256

308d03c0a0145f5b8ec0483534177c69ccf41ec103da8648f5b7fd9de50db2a4
SHA512

f2b175cca0baf75315226284ea8db26ff89f25d7c596e2e007a473dd8ecf066eb4bd12ffeef88c21073d68f965d8d15a3cb07b6615226e228efe87c2f8d89522
SSDEEP

49152:Ag9v2aGQgJVDPOVGLrKzQUscF7qIplWYRX0p:6LmVIdDchq85VO

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__	308d03c0a0145f5b8ec0483534177c69ccf41ec103da8648f5b7fd9de50db2a4.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	308d03c0a0145f5b8ec0483534177c69ccf41ec103da8648f5b7fd9de50db2a4.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	308d03c0a0145f5b8ec0483534177c69ccf41ec103da8648f5b7fd9de50db2a4.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	308d03c0a0145f5b8ec0483534177c69ccf41ec103da8648f5b7fd9de50db2a4.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
2936	308d03c0a0145f5b8ec0483534177c69ccf41ec103da8648f5b7fd9de50db2a4.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1684	2936	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	308d03c0a0145f5b8ec0483534177c69ccf41ec103da8648f5b7fd9de50db2a4.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	308d03c0a0145f5b8ec0483534177c69ccf41ec103da8648f5b7fd9de50db2a4.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	308d03c0a0145f5b8ec0483534177c69ccf41ec103da8648f5b7fd9de50db2a4.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2936	308d03c0a0145f5b8ec0483534177c69ccf41ec103da8648f5b7fd9de50db2a4.exe
2936	308d03c0a0145f5b8ec0483534177c69ccf41ec103da8648f5b7fd9de50db2a4.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2936 wrote to memory of 1684	2936	308d03c0a0145f5b8ec0483534177c69ccf41ec103da8648f5b7fd9de50db2a4.exe	31
PID 2936 wrote to memory of 1684	2936	308d03c0a0145f5b8ec0483534177c69ccf41ec103da8648f5b7fd9de50db2a4.exe	31
PID 2936 wrote to memory of 1684	2936	308d03c0a0145f5b8ec0483534177c69ccf41ec103da8648f5b7fd9de50db2a4.exe	31
PID 2936 wrote to memory of 1684	2936	308d03c0a0145f5b8ec0483534177c69ccf41ec103da8648f5b7fd9de50db2a4.exe	31

C:\Users\Admin\AppData\Local\Temp\308d03c0a0145f5b8ec0483534177c69ccf41ec103da8648f5b7fd9de50db2a4.exe
"C:\Users\Admin\AppData\Local\Temp\308d03c0a0145f5b8ec0483534177c69ccf41ec103da8648f5b7fd9de50db2a4.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:2936
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2936 -s 432
  2⤵
  - Program crash
  PID:1684

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/2936-0-0x0000000001310000-0x00000000019A0000-memory.dmp

Filesize
6.6MB

Download
memory/2936-1-0x00000000774E0000-0x00000000774E2000-memory.dmp

Filesize
8KB

Download
memory/2936-2-0x0000000001311000-0x0000000001328000-memory.dmp

Filesize
92KB

Download
memory/2936-3-0x0000000001310000-0x00000000019A0000-memory.dmp

Filesize
6.6MB

Download
memory/2936-4-0x0000000001310000-0x00000000019A0000-memory.dmp

Filesize
6.6MB

Download
memory/2936-5-0x0000000001310000-0x00000000019A0000-memory.dmp

Filesize
6.6MB

Download
memory/2936-6-0x0000000001310000-0x00000000019A0000-memory.dmp

Filesize
6.6MB

Download
memory/2936-7-0x0000000001310000-0x00000000019A0000-memory.dmp

Filesize
6.6MB

Download
memory/2936-8-0x0000000001310000-0x00000000019A0000-memory.dmp

Filesize
6.6MB

Download
memory/2936-9-0x0000000001310000-0x00000000019A0000-memory.dmp

Filesize
6.6MB

Download
memory/2936-10-0x0000000001310000-0x00000000019A0000-memory.dmp

Filesize
6.6MB

Download
memory/2936-11-0x0000000001310000-0x00000000019A0000-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