stealc | 3e7a85e113f4107523c80642934fc12086f0580aa7c8de6dd182f42530f2bd6c

General

Target

3e7a85e113f4107523c80642934fc12086f0580aa7c8de6dd182f42530f2bd6c.exe
Size

1.7MB
MD5

006c4c312e4895aaffb9f33016df6421
SHA1

02ccd4ca51f83a891222a1e6d58c4d4d06641aa1
SHA256

3e7a85e113f4107523c80642934fc12086f0580aa7c8de6dd182f42530f2bd6c
SHA512

eb97655a66da24e614d765645469aee1724c9ab3240297302a0e6b70ac56eb3fc7fb3384365cd4a18c82ffc08c109943b653ccb6b7baacd51a591580297b4bf6
SSDEEP

49152:y/6tzL5lxBmp/0FNRUWfB67kiety+puAkSmFp:y/6tH5lXgCkwBzFM+ojSup

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__	3e7a85e113f4107523c80642934fc12086f0580aa7c8de6dd182f42530f2bd6c.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	3e7a85e113f4107523c80642934fc12086f0580aa7c8de6dd182f42530f2bd6c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	3e7a85e113f4107523c80642934fc12086f0580aa7c8de6dd182f42530f2bd6c.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Wine	3e7a85e113f4107523c80642934fc12086f0580aa7c8de6dd182f42530f2bd6c.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
2200	3e7a85e113f4107523c80642934fc12086f0580aa7c8de6dd182f42530f2bd6c.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2900	2200	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	3e7a85e113f4107523c80642934fc12086f0580aa7c8de6dd182f42530f2bd6c.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	3e7a85e113f4107523c80642934fc12086f0580aa7c8de6dd182f42530f2bd6c.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	3e7a85e113f4107523c80642934fc12086f0580aa7c8de6dd182f42530f2bd6c.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2200	3e7a85e113f4107523c80642934fc12086f0580aa7c8de6dd182f42530f2bd6c.exe
2200	3e7a85e113f4107523c80642934fc12086f0580aa7c8de6dd182f42530f2bd6c.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2200 wrote to memory of 2900	2200	3e7a85e113f4107523c80642934fc12086f0580aa7c8de6dd182f42530f2bd6c.exe	32
PID 2200 wrote to memory of 2900	2200	3e7a85e113f4107523c80642934fc12086f0580aa7c8de6dd182f42530f2bd6c.exe	32
PID 2200 wrote to memory of 2900	2200	3e7a85e113f4107523c80642934fc12086f0580aa7c8de6dd182f42530f2bd6c.exe	32
PID 2200 wrote to memory of 2900	2200	3e7a85e113f4107523c80642934fc12086f0580aa7c8de6dd182f42530f2bd6c.exe	32

C:\Users\Admin\AppData\Local\Temp\3e7a85e113f4107523c80642934fc12086f0580aa7c8de6dd182f42530f2bd6c.exe
"C:\Users\Admin\AppData\Local\Temp\3e7a85e113f4107523c80642934fc12086f0580aa7c8de6dd182f42530f2bd6c.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:2200
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2200 -s 932
  2⤵
  - Program crash
  PID:2900

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/2200-0-0x00000000003A0000-0x0000000000A31000-memory.dmp

Filesize
6.6MB

Download
memory/2200-1-0x0000000077C80000-0x0000000077C82000-memory.dmp

Filesize
8KB

Download
memory/2200-2-0x00000000003A1000-0x00000000003B8000-memory.dmp

Filesize
92KB

Download
memory/2200-3-0x00000000003A0000-0x0000000000A31000-memory.dmp

Filesize
6.6MB

Download
memory/2200-4-0x00000000003A0000-0x0000000000A31000-memory.dmp

Filesize
6.6MB

Download
memory/2200-5-0x00000000003A0000-0x0000000000A31000-memory.dmp

Filesize
6.6MB

Download
memory/2200-6-0x00000000003A0000-0x0000000000A31000-memory.dmp

Filesize
6.6MB

Download
memory/2200-7-0x00000000003A0000-0x0000000000A31000-memory.dmp

Filesize
6.6MB

Download
memory/2200-8-0x00000000003A0000-0x0000000000A31000-memory.dmp

Filesize
6.6MB

Download
memory/2200-9-0x00000000003A0000-0x0000000000A31000-memory.dmp

Filesize
6.6MB

Download
memory/2200-10-0x00000000003A0000-0x0000000000A31000-memory.dmp

Filesize
6.6MB

Download
memory/2200-12-0x00000000003A0000-0x0000000000A31000-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