stealc | 017872dc556f1b6384d34154a2ea8770d387239be567ce349d6cbd3fe823f7ea

General

Target

017872dc556f1b6384d34154a2ea8770d387239be567ce349d6cbd3fe823f7eaN.exe
Size

1.8MB
MD5

87a9528a1387e95558bcb12d4537bbe0
SHA1

75cce48eb5aacc6873a2193f70dea37be6afb50e
SHA256

017872dc556f1b6384d34154a2ea8770d387239be567ce349d6cbd3fe823f7ea
SHA512

774127f5f84915501f34c1be140193f2d4ff1c0c6d40a214557020bb910a8287a088d7076106bb2393b0c83f4c16e6a86e7ee353f861d92d562e8cb8396eb308
SSDEEP

49152:BFP0ugcPpwraDOFk8Bhc9hM+WL68YzilpK9bhWLZ2NUz:/0BK/O+8Bq9DJ8escq

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__	017872dc556f1b6384d34154a2ea8770d387239be567ce349d6cbd3fe823f7eaN.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	017872dc556f1b6384d34154a2ea8770d387239be567ce349d6cbd3fe823f7eaN.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	017872dc556f1b6384d34154a2ea8770d387239be567ce349d6cbd3fe823f7eaN.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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Wine	017872dc556f1b6384d34154a2ea8770d387239be567ce349d6cbd3fe823f7eaN.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
2504	017872dc556f1b6384d34154a2ea8770d387239be567ce349d6cbd3fe823f7eaN.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2668	2504	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	017872dc556f1b6384d34154a2ea8770d387239be567ce349d6cbd3fe823f7eaN.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	017872dc556f1b6384d34154a2ea8770d387239be567ce349d6cbd3fe823f7eaN.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	017872dc556f1b6384d34154a2ea8770d387239be567ce349d6cbd3fe823f7eaN.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2504	017872dc556f1b6384d34154a2ea8770d387239be567ce349d6cbd3fe823f7eaN.exe
2504	017872dc556f1b6384d34154a2ea8770d387239be567ce349d6cbd3fe823f7eaN.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2504 wrote to memory of 2668	2504	017872dc556f1b6384d34154a2ea8770d387239be567ce349d6cbd3fe823f7eaN.exe	32
PID 2504 wrote to memory of 2668	2504	017872dc556f1b6384d34154a2ea8770d387239be567ce349d6cbd3fe823f7eaN.exe	32
PID 2504 wrote to memory of 2668	2504	017872dc556f1b6384d34154a2ea8770d387239be567ce349d6cbd3fe823f7eaN.exe	32
PID 2504 wrote to memory of 2668	2504	017872dc556f1b6384d34154a2ea8770d387239be567ce349d6cbd3fe823f7eaN.exe	32

C:\Users\Admin\AppData\Local\Temp\017872dc556f1b6384d34154a2ea8770d387239be567ce349d6cbd3fe823f7eaN.exe
"C:\Users\Admin\AppData\Local\Temp\017872dc556f1b6384d34154a2ea8770d387239be567ce349d6cbd3fe823f7eaN.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:2504
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2504 -s 928
  2⤵
  - Program crash
  PID:2668

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/2504-0-0x0000000001040000-0x00000000016F6000-memory.dmp

Filesize
6.7MB

Download
memory/2504-1-0x0000000077CA0000-0x0000000077CA2000-memory.dmp

Filesize
8KB

Download
memory/2504-2-0x0000000001041000-0x0000000001058000-memory.dmp

Filesize
92KB

Download
memory/2504-3-0x0000000001040000-0x00000000016F6000-memory.dmp

Filesize
6.7MB

Download
memory/2504-4-0x0000000001040000-0x00000000016F6000-memory.dmp

Filesize
6.7MB

Download
memory/2504-5-0x0000000001040000-0x00000000016F6000-memory.dmp

Filesize
6.7MB

Download
memory/2504-6-0x0000000001040000-0x00000000016F6000-memory.dmp

Filesize
6.7MB

Download
memory/2504-7-0x0000000001040000-0x00000000016F6000-memory.dmp

Filesize
6.7MB

Download
memory/2504-8-0x0000000001040000-0x00000000016F6000-memory.dmp

Filesize
6.7MB

Download
memory/2504-9-0x0000000001040000-0x00000000016F6000-memory.dmp

Filesize
6.7MB

Download
memory/2504-10-0x0000000001040000-0x00000000016F6000-memory.dmp

Filesize
6.7MB

Download
memory/2504-11-0x0000000001040000-0x00000000016F6000-memory.dmp

Filesize
6.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads