stealc | 9ad8ef7e2d4352996793f937032dbfc063e31477093e3f6689b46bd1b5b7fd81

General

Target

52957d4501c8b066b7208e418ddb49848c116905b2a8c3d37366ed188fb99eda.exe
Size

1.8MB
MD5

85424194e3012b5970ef13dda8861ae7
SHA1

d3464cf08ff3e16c81d08cefd1c6159c0a501a31
SHA256

52957d4501c8b066b7208e418ddb49848c116905b2a8c3d37366ed188fb99eda
SHA512

a24b6a7a8aaf431f584d38f3bee62c948ddaa488fc6d3c720ea39a1b1e47db1e4449211f36de14a50d66380b5bf2a722b125db6c23143b7de9a1e9941f6a396a
SSDEEP

49152:8gaeIscyHv+wLZNB/vpjqB/s1qoI5mfIG+9xRe:8gVIZyFZLvMGEx5m1k3e

Score

10^/10

stealc doma discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

doma

C2

http://185.215.113.37

Attributes

url_path
/e2b1563c6670f193.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__	52957d4501c8b066b7208e418ddb49848c116905b2a8c3d37366ed188fb99eda.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	52957d4501c8b066b7208e418ddb49848c116905b2a8c3d37366ed188fb99eda.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	52957d4501c8b066b7208e418ddb49848c116905b2a8c3d37366ed188fb99eda.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	52957d4501c8b066b7208e418ddb49848c116905b2a8c3d37366ed188fb99eda.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
2540	52957d4501c8b066b7208e418ddb49848c116905b2a8c3d37366ed188fb99eda.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
648	2540	WerFault.exe	28

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	52957d4501c8b066b7208e418ddb49848c116905b2a8c3d37366ed188fb99eda.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	52957d4501c8b066b7208e418ddb49848c116905b2a8c3d37366ed188fb99eda.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	52957d4501c8b066b7208e418ddb49848c116905b2a8c3d37366ed188fb99eda.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2540	52957d4501c8b066b7208e418ddb49848c116905b2a8c3d37366ed188fb99eda.exe
2540	52957d4501c8b066b7208e418ddb49848c116905b2a8c3d37366ed188fb99eda.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2540 wrote to memory of 648	2540	52957d4501c8b066b7208e418ddb49848c116905b2a8c3d37366ed188fb99eda.exe	30
PID 2540 wrote to memory of 648	2540	52957d4501c8b066b7208e418ddb49848c116905b2a8c3d37366ed188fb99eda.exe	30
PID 2540 wrote to memory of 648	2540	52957d4501c8b066b7208e418ddb49848c116905b2a8c3d37366ed188fb99eda.exe	30
PID 2540 wrote to memory of 648	2540	52957d4501c8b066b7208e418ddb49848c116905b2a8c3d37366ed188fb99eda.exe	30

C:\Users\Admin\AppData\Local\Temp\52957d4501c8b066b7208e418ddb49848c116905b2a8c3d37366ed188fb99eda.exe
"C:\Users\Admin\AppData\Local\Temp\52957d4501c8b066b7208e418ddb49848c116905b2a8c3d37366ed188fb99eda.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:2540
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2540 -s 432
  2⤵
  - Program crash
  PID:648

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/2540-0-0x0000000000880000-0x0000000000F27000-memory.dmp

Filesize
6.7MB

Download
memory/2540-1-0x0000000077E80000-0x0000000077E82000-memory.dmp

Filesize
8KB

Download
memory/2540-2-0x0000000000881000-0x00000000008A4000-memory.dmp

Filesize
140KB

Download
memory/2540-3-0x0000000000880000-0x0000000000F27000-memory.dmp

Filesize
6.7MB

Download
memory/2540-4-0x0000000000880000-0x0000000000F27000-memory.dmp

Filesize
6.7MB

Download
memory/2540-5-0x0000000000880000-0x0000000000F27000-memory.dmp

Filesize
6.7MB

Download
memory/2540-6-0x0000000000880000-0x0000000000F27000-memory.dmp

Filesize
6.7MB

Download
memory/2540-7-0x0000000000880000-0x0000000000F27000-memory.dmp

Filesize
6.7MB

Download
memory/2540-8-0x0000000000880000-0x0000000000F27000-memory.dmp

Filesize
6.7MB

Download
memory/2540-9-0x0000000000880000-0x0000000000F27000-memory.dmp

Filesize
6.7MB

Download
memory/2540-10-0x0000000000880000-0x0000000000F27000-memory.dmp

Filesize
6.7MB

Download
memory/2540-11-0x0000000000880000-0x0000000000F27000-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