stealc | 795d7adccbd9c808ea9c70266476c67c9a411cdbd3444ad359dce618719bac60

General

Target

795d7adccbd9c808ea9c70266476c67c9a411cdbd3444ad359dce618719bac60.exe
Size

1.7MB
MD5

8259f3a2c31ac4637c4d87fc93a42868
SHA1

3b398ede4bf6032d6aeb8d1a3e287d7bd959a034
SHA256

795d7adccbd9c808ea9c70266476c67c9a411cdbd3444ad359dce618719bac60
SHA512

0a831e3b71e58331aa767b9a12e115369cd4ab0112df01b4f01809e03e5a294ea43071c1bc6247ed73e1f1f3098d405a4bf7b377388c7bca41abf9a9c94697d4
SSDEEP

24576:Lkd1eu5DTSnJ6XfZXLn7FQu7pXWuQQPrKNY+Q0Pa+ndYT1GdU:LXeDTwJ6XfZXLautGmuJy+61y

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__	795d7adccbd9c808ea9c70266476c67c9a411cdbd3444ad359dce618719bac60.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	795d7adccbd9c808ea9c70266476c67c9a411cdbd3444ad359dce618719bac60.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	795d7adccbd9c808ea9c70266476c67c9a411cdbd3444ad359dce618719bac60.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Wine	795d7adccbd9c808ea9c70266476c67c9a411cdbd3444ad359dce618719bac60.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
1704	795d7adccbd9c808ea9c70266476c67c9a411cdbd3444ad359dce618719bac60.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2624	1704	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	795d7adccbd9c808ea9c70266476c67c9a411cdbd3444ad359dce618719bac60.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	795d7adccbd9c808ea9c70266476c67c9a411cdbd3444ad359dce618719bac60.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	795d7adccbd9c808ea9c70266476c67c9a411cdbd3444ad359dce618719bac60.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1704	795d7adccbd9c808ea9c70266476c67c9a411cdbd3444ad359dce618719bac60.exe
1704	795d7adccbd9c808ea9c70266476c67c9a411cdbd3444ad359dce618719bac60.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 2624	1704	795d7adccbd9c808ea9c70266476c67c9a411cdbd3444ad359dce618719bac60.exe	32
PID 1704 wrote to memory of 2624	1704	795d7adccbd9c808ea9c70266476c67c9a411cdbd3444ad359dce618719bac60.exe	32
PID 1704 wrote to memory of 2624	1704	795d7adccbd9c808ea9c70266476c67c9a411cdbd3444ad359dce618719bac60.exe	32
PID 1704 wrote to memory of 2624	1704	795d7adccbd9c808ea9c70266476c67c9a411cdbd3444ad359dce618719bac60.exe	32

C:\Users\Admin\AppData\Local\Temp\795d7adccbd9c808ea9c70266476c67c9a411cdbd3444ad359dce618719bac60.exe
"C:\Users\Admin\AppData\Local\Temp\795d7adccbd9c808ea9c70266476c67c9a411cdbd3444ad359dce618719bac60.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:1704
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1704 -s 928
  2⤵
  - Program crash
  PID:2624

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/1704-0-0x0000000000F40000-0x00000000015D5000-memory.dmp

Filesize
6.6MB

Download
memory/1704-1-0x0000000077510000-0x0000000077512000-memory.dmp

Filesize
8KB

Download
memory/1704-2-0x0000000000F41000-0x0000000000F58000-memory.dmp

Filesize
92KB

Download
memory/1704-3-0x0000000000F40000-0x00000000015D5000-memory.dmp

Filesize
6.6MB

Download
memory/1704-4-0x0000000000F40000-0x00000000015D5000-memory.dmp

Filesize
6.6MB

Download
memory/1704-5-0x0000000000F40000-0x00000000015D5000-memory.dmp

Filesize
6.6MB

Download
memory/1704-6-0x0000000000F40000-0x00000000015D5000-memory.dmp

Filesize
6.6MB

Download
memory/1704-7-0x0000000000F40000-0x00000000015D5000-memory.dmp

Filesize
6.6MB

Download
memory/1704-8-0x0000000000F40000-0x00000000015D5000-memory.dmp

Filesize
6.6MB

Download
memory/1704-9-0x0000000000F40000-0x00000000015D5000-memory.dmp

Filesize
6.6MB

Download
memory/1704-10-0x0000000000F40000-0x00000000015D5000-memory.dmp

Filesize
6.6MB

Download
memory/1704-11-0x0000000000F40000-0x00000000015D5000-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