stealc | 3e6670b28e6a555a94c2b6dd9c5159bd2d0f0fd80d1c768f332b256cfd8a06e5

General

Target

3e6670b28e6a555a94c2b6dd9c5159bd2d0f0fd80d1c768f332b256cfd8a06e5.exe
Size

1.7MB
MD5

774b886af101cbd81218638ff8997b1c
SHA1

5206f2bf6c12b0a89e64d2a4e6b7eca76ec91beb
SHA256

3e6670b28e6a555a94c2b6dd9c5159bd2d0f0fd80d1c768f332b256cfd8a06e5
SHA512

4d0e0485f2a2c3b7cefe18fb0a9ca8260fd26f3e40c8029f8813e2d47686fb74b6ffae8fc859ddb77d56002e181642dbc71f06576b173bfd0b0ab650d03b92ee
SSDEEP

49152:GGuQwAOVggl6i4jHRX0S6dtiWjOIg1t/a:GGHwAOwiKHRE1e8gy

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__	3e6670b28e6a555a94c2b6dd9c5159bd2d0f0fd80d1c768f332b256cfd8a06e5.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	3e6670b28e6a555a94c2b6dd9c5159bd2d0f0fd80d1c768f332b256cfd8a06e5.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	3e6670b28e6a555a94c2b6dd9c5159bd2d0f0fd80d1c768f332b256cfd8a06e5.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-1-5-21-2045521122-590294423-3465680274-1000\Software\Wine	3e6670b28e6a555a94c2b6dd9c5159bd2d0f0fd80d1c768f332b256cfd8a06e5.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
4000	3e6670b28e6a555a94c2b6dd9c5159bd2d0f0fd80d1c768f332b256cfd8a06e5.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3420	4000	WerFault.exe	82

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	3e6670b28e6a555a94c2b6dd9c5159bd2d0f0fd80d1c768f332b256cfd8a06e5.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	3e6670b28e6a555a94c2b6dd9c5159bd2d0f0fd80d1c768f332b256cfd8a06e5.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	3e6670b28e6a555a94c2b6dd9c5159bd2d0f0fd80d1c768f332b256cfd8a06e5.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4000	3e6670b28e6a555a94c2b6dd9c5159bd2d0f0fd80d1c768f332b256cfd8a06e5.exe
4000	3e6670b28e6a555a94c2b6dd9c5159bd2d0f0fd80d1c768f332b256cfd8a06e5.exe
4000	3e6670b28e6a555a94c2b6dd9c5159bd2d0f0fd80d1c768f332b256cfd8a06e5.exe
4000	3e6670b28e6a555a94c2b6dd9c5159bd2d0f0fd80d1c768f332b256cfd8a06e5.exe

C:\Users\Admin\AppData\Local\Temp\3e6670b28e6a555a94c2b6dd9c5159bd2d0f0fd80d1c768f332b256cfd8a06e5.exe
"C:\Users\Admin\AppData\Local\Temp\3e6670b28e6a555a94c2b6dd9c5159bd2d0f0fd80d1c768f332b256cfd8a06e5.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:4000
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4000 -s 1492
  2⤵
  - Program crash
  PID:3420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4000 -ip 4000
1⤵
PID:1012

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/4000-0-0x0000000000C10000-0x0000000001295000-memory.dmp

Filesize
6.5MB

Download
memory/4000-1-0x00000000770F4000-0x00000000770F6000-memory.dmp

Filesize
8KB

Download
memory/4000-2-0x0000000000C11000-0x0000000000C28000-memory.dmp

Filesize
92KB

Download
memory/4000-3-0x0000000000C10000-0x0000000001295000-memory.dmp

Filesize
6.5MB

Download
memory/4000-4-0x0000000000C10000-0x0000000001295000-memory.dmp

Filesize
6.5MB

Download
memory/4000-5-0x0000000000C10000-0x0000000001295000-memory.dmp

Filesize
6.5MB

Download
memory/4000-6-0x0000000000C10000-0x0000000001295000-memory.dmp

Filesize
6.5MB

Download
memory/4000-7-0x0000000000C10000-0x0000000001295000-memory.dmp

Filesize
6.5MB

Download
memory/4000-8-0x0000000000C10000-0x0000000001295000-memory.dmp

Filesize
6.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads