stealc | 38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222

General

Target

38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222.exe
Size

2.8MB
MD5

ccd3d88f028bbaa1f9dde5ef92b59dc3
SHA1

04b65468a65d99f003599e6dac235e386770438b
SHA256

38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222
SHA512

9f9494cdf7428892e5c9d0a0090c02a157d8f8ec96c92fb0936c4db2967fd593023c7a204a7165b0c9ea4fd46f48bb8bfb397bbbc9d3e5886dcdb171cd527e32
SSDEEP

49152:9SzhYgT8JC0LJRqNPgPgLl8ndh2/q7yQrm/:9SzhYgAJC0LJcNP4elGdnr

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__	38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222.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	38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Wine	38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222.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
2648	38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2572	2648	WerFault.exe	30

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	38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222.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	38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2648	38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222.exe
2648	38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2648 wrote to memory of 2572	2648	38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222.exe	32
PID 2648 wrote to memory of 2572	2648	38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222.exe	32
PID 2648 wrote to memory of 2572	2648	38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222.exe	32
PID 2648 wrote to memory of 2572	2648	38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222.exe	32

C:\Users\Admin\AppData\Local\Temp\38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222.exe
"C:\Users\Admin\AppData\Local\Temp\38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222.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:2648
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 924
  2⤵
  - Program crash
  PID:2572

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/2648-0-0x0000000000B60000-0x0000000001059000-memory.dmp

Filesize
5.0MB

Download
memory/2648-1-0x0000000077580000-0x0000000077582000-memory.dmp

Filesize
8KB

Download
memory/2648-2-0x0000000000B61000-0x0000000000B78000-memory.dmp

Filesize
92KB

Download
memory/2648-3-0x0000000000B60000-0x0000000001059000-memory.dmp

Filesize
5.0MB

Download
memory/2648-4-0x0000000000B60000-0x0000000001059000-memory.dmp

Filesize
5.0MB

Download
memory/2648-5-0x0000000000B60000-0x0000000001059000-memory.dmp

Filesize
5.0MB

Download
memory/2648-6-0x0000000000B60000-0x0000000001059000-memory.dmp

Filesize
5.0MB

Download
memory/2648-7-0x0000000000B60000-0x0000000001059000-memory.dmp

Filesize
5.0MB

Download
memory/2648-8-0x0000000000B60000-0x0000000001059000-memory.dmp

Filesize
5.0MB

Download
memory/2648-9-0x0000000000B60000-0x0000000001059000-memory.dmp

Filesize
5.0MB

Download
memory/2648-10-0x0000000000B60000-0x0000000001059000-memory.dmp

Filesize
5.0MB

Download
memory/2648-12-0x0000000000B60000-0x0000000001059000-memory.dmp

Filesize
5.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads