stealc | 4701fcbc1867febb3bebe4ede4e967ce589229fbf1e72fea1fb878606a53b30f

General

Target

4701fcbc1867febb3bebe4ede4e967ce589229fbf1e72fea1fb878606a53b30f.exe
Size

2.8MB
MD5

7bad838d9a55cee844e4d4998730393a
SHA1

92a5dd9141862f2011d424ab05c1a27bf73200c0
SHA256

4701fcbc1867febb3bebe4ede4e967ce589229fbf1e72fea1fb878606a53b30f
SHA512

f93b04f4841984009c8b8e23b0f62c8b71281c1358e046a0da6514c4b43a7befb8fafa691c2858c0042ab923294fd573dc5a7f00ccfd9f3f102e753bab0b845f
SSDEEP

49152:B51jnAk8gzyjxsKw+whi5kcFan2p7ACa2/QXdi:BLrAk8gmjxsKw+whYkcFACa24X0

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__	4701fcbc1867febb3bebe4ede4e967ce589229fbf1e72fea1fb878606a53b30f.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	4701fcbc1867febb3bebe4ede4e967ce589229fbf1e72fea1fb878606a53b30f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	4701fcbc1867febb3bebe4ede4e967ce589229fbf1e72fea1fb878606a53b30f.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	4701fcbc1867febb3bebe4ede4e967ce589229fbf1e72fea1fb878606a53b30f.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
2220	4701fcbc1867febb3bebe4ede4e967ce589229fbf1e72fea1fb878606a53b30f.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1912	2220	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	4701fcbc1867febb3bebe4ede4e967ce589229fbf1e72fea1fb878606a53b30f.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	4701fcbc1867febb3bebe4ede4e967ce589229fbf1e72fea1fb878606a53b30f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	4701fcbc1867febb3bebe4ede4e967ce589229fbf1e72fea1fb878606a53b30f.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2220	4701fcbc1867febb3bebe4ede4e967ce589229fbf1e72fea1fb878606a53b30f.exe
2220	4701fcbc1867febb3bebe4ede4e967ce589229fbf1e72fea1fb878606a53b30f.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 1912	2220	4701fcbc1867febb3bebe4ede4e967ce589229fbf1e72fea1fb878606a53b30f.exe	31
PID 2220 wrote to memory of 1912	2220	4701fcbc1867febb3bebe4ede4e967ce589229fbf1e72fea1fb878606a53b30f.exe	31
PID 2220 wrote to memory of 1912	2220	4701fcbc1867febb3bebe4ede4e967ce589229fbf1e72fea1fb878606a53b30f.exe	31
PID 2220 wrote to memory of 1912	2220	4701fcbc1867febb3bebe4ede4e967ce589229fbf1e72fea1fb878606a53b30f.exe	31

C:\Users\Admin\AppData\Local\Temp\4701fcbc1867febb3bebe4ede4e967ce589229fbf1e72fea1fb878606a53b30f.exe
"C:\Users\Admin\AppData\Local\Temp\4701fcbc1867febb3bebe4ede4e967ce589229fbf1e72fea1fb878606a53b30f.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:2220
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2220 -s 928
  2⤵
  - Program crash
  PID:1912

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/2220-0-0x0000000000830000-0x0000000000D36000-memory.dmp

Filesize
5.0MB

Download
memory/2220-1-0x0000000077960000-0x0000000077962000-memory.dmp

Filesize
8KB

Download
memory/2220-2-0x0000000000831000-0x0000000000848000-memory.dmp

Filesize
92KB

Download
memory/2220-3-0x0000000000830000-0x0000000000D36000-memory.dmp

Filesize
5.0MB

Download
memory/2220-4-0x0000000000830000-0x0000000000D36000-memory.dmp

Filesize
5.0MB

Download
memory/2220-5-0x0000000000830000-0x0000000000D36000-memory.dmp

Filesize
5.0MB

Download
memory/2220-6-0x0000000000830000-0x0000000000D36000-memory.dmp

Filesize
5.0MB

Download
memory/2220-7-0x0000000000830000-0x0000000000D36000-memory.dmp

Filesize
5.0MB

Download
memory/2220-8-0x0000000000830000-0x0000000000D36000-memory.dmp

Filesize
5.0MB

Download
memory/2220-9-0x0000000000830000-0x0000000000D36000-memory.dmp

Filesize
5.0MB

Download
memory/2220-10-0x0000000000830000-0x0000000000D36000-memory.dmp

Filesize
5.0MB

Download
memory/2220-11-0x0000000000830000-0x0000000000D36000-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