stealc | 4a859e1033128a34554835e09f0114d9b38711ea7684044f2df3a1769a41d8f1

General

Target

4a859e1033128a34554835e09f0114d9b38711ea7684044f2df3a1769a41d8f1.exe
Size

4.9MB
MD5

651d3138d8cd0406edaad620ce35f037
SHA1

1b9e21e794abb14f68778e0ee81e8193c0408a6f
SHA256

4a859e1033128a34554835e09f0114d9b38711ea7684044f2df3a1769a41d8f1
SHA512

8f487e5f40c950bd897520d3d4bc11aedec6c122e3bd00c72ade0058540117ca029ce30af83dff413b7417b782af7f85b6654686986bcc2ce374d2709dfbf64d
SSDEEP

49152:QMZVA3zzZn2QGUWxh/sCRoDTMqo4NyiBb4JwN+:QaVAjzZn2lxuCRoXMqRM

Score

10^/10

stealc stok discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

stok

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

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	4a859e1033128a34554835e09f0114d9b38711ea7684044f2df3a1769a41d8f1.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	4a859e1033128a34554835e09f0114d9b38711ea7684044f2df3a1769a41d8f1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	4a859e1033128a34554835e09f0114d9b38711ea7684044f2df3a1769a41d8f1.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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Wine	4a859e1033128a34554835e09f0114d9b38711ea7684044f2df3a1769a41d8f1.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
1380	4a859e1033128a34554835e09f0114d9b38711ea7684044f2df3a1769a41d8f1.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2652	1380	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	4a859e1033128a34554835e09f0114d9b38711ea7684044f2df3a1769a41d8f1.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	4a859e1033128a34554835e09f0114d9b38711ea7684044f2df3a1769a41d8f1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	4a859e1033128a34554835e09f0114d9b38711ea7684044f2df3a1769a41d8f1.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1380	4a859e1033128a34554835e09f0114d9b38711ea7684044f2df3a1769a41d8f1.exe
1380	4a859e1033128a34554835e09f0114d9b38711ea7684044f2df3a1769a41d8f1.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1380 wrote to memory of 2652	1380	4a859e1033128a34554835e09f0114d9b38711ea7684044f2df3a1769a41d8f1.exe	32
PID 1380 wrote to memory of 2652	1380	4a859e1033128a34554835e09f0114d9b38711ea7684044f2df3a1769a41d8f1.exe	32
PID 1380 wrote to memory of 2652	1380	4a859e1033128a34554835e09f0114d9b38711ea7684044f2df3a1769a41d8f1.exe	32
PID 1380 wrote to memory of 2652	1380	4a859e1033128a34554835e09f0114d9b38711ea7684044f2df3a1769a41d8f1.exe	32

C:\Users\Admin\AppData\Local\Temp\4a859e1033128a34554835e09f0114d9b38711ea7684044f2df3a1769a41d8f1.exe
"C:\Users\Admin\AppData\Local\Temp\4a859e1033128a34554835e09f0114d9b38711ea7684044f2df3a1769a41d8f1.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:1380
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1380 -s 916
  2⤵
  - Program crash
  PID:2652

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/1380-0-0x0000000001330000-0x0000000001826000-memory.dmp

Filesize
5.0MB

Download
memory/1380-1-0x0000000077A50000-0x0000000077A52000-memory.dmp

Filesize
8KB

Download
memory/1380-2-0x0000000001331000-0x000000000157A000-memory.dmp

Filesize
2.3MB

Download
memory/1380-3-0x0000000001330000-0x0000000001826000-memory.dmp

Filesize
5.0MB

Download
memory/1380-4-0x0000000001330000-0x0000000001826000-memory.dmp

Filesize
5.0MB

Download
memory/1380-5-0x0000000001331000-0x000000000157A000-memory.dmp

Filesize
2.3MB

Download
memory/1380-6-0x0000000001330000-0x0000000001826000-memory.dmp

Filesize
5.0MB

Download
memory/1380-7-0x0000000001330000-0x0000000001826000-memory.dmp

Filesize
5.0MB

Download
memory/1380-8-0x0000000001330000-0x0000000001826000-memory.dmp

Filesize
5.0MB

Download
memory/1380-9-0x0000000001330000-0x0000000001826000-memory.dmp

Filesize
5.0MB

Download
memory/1380-10-0x0000000001330000-0x0000000001826000-memory.dmp

Filesize
5.0MB

Download
memory/1380-11-0x0000000001330000-0x0000000001826000-memory.dmp

Filesize
5.0MB

Download
memory/1380-12-0x0000000001330000-0x0000000001826000-memory.dmp

Filesize
5.0MB

Download
memory/1380-13-0x0000000001331000-0x000000000157A000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads