stealc | ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88

General

Target

ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe
Size

2.1MB
MD5

6fd1a6a721b41de370d8ed5d1e2de198
SHA1

eade351571a68acb2003301f3b29b165deed11f8
SHA256

ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88
SHA512

86357d6173b1039ba2c57b5411e3ba49b26cc08a8aaf09da3f0c7b37c380dff7910fafda7ec631ceb78af7091422cbacbd7e5e12a4be453212373188a0395e07
SSDEEP

49152:J/k9x6exxxAKaPydZkBWnfHGEVX1x6AA4vkd5Rluo9rCgEfs6+DcfrMbb:/Jyd+Bm/GgXxvkdFrCgEfsZD+Mb

Score

10^/10

stealc tale credential_access discovery evasion spyware stealer

Malware Config

Extracted

Family

stealc

Botnet

tale

C2

http://185.215.113.206

Attributes

url_path
/6c4adf523b719729.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

Processes:

ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.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

Processes:

ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

2732 cmd.exe

pid	process
2732	cmd.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

Processes:

ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Wine	ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe

Loads dropped DLL 1 IoCs

Processes:

ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe

pid process

2076 ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001
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

Processes:

ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe

pid process

2076 ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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

Processes:

ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.execmd.exetimeout.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.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

Processes:

ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2588 timeout.exe

pid	process
2588	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe

pid	process
2076	ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe
2076	ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.execmd.exe

description	pid	process	target process
PID 2076 wrote to memory of 2732	2076	ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe	cmd.exe
PID 2076 wrote to memory of 2732	2076	ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe	cmd.exe
PID 2076 wrote to memory of 2732	2076	ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe	cmd.exe
PID 2076 wrote to memory of 2732	2076	ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe	cmd.exe
PID 2732 wrote to memory of 2588	2732	cmd.exe	timeout.exe
PID 2732 wrote to memory of 2588	2732	cmd.exe	timeout.exe
PID 2732 wrote to memory of 2588	2732	cmd.exe	timeout.exe
PID 2732 wrote to memory of 2588	2732	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe
"C:\Users\Admin\AppData\Local\Temp\ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2076
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\ef8c97d1e594b9d78f0192d8f83a29cbd83acaea0c6b507bed5cacc4ff0a1a88.exe" & del "C:\ProgramData\*.dll"" & exit
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2732
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2588

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Query Registry

5

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

\ProgramData\chrome.dll

Filesize
676KB

MD5
eda18948a989176f4eebb175ce806255

SHA1
ff22a3d5f5fb705137f233c36622c79eab995897

SHA256
81a4f37c5495800b7cc46aea6535d9180dadb5c151db6f1fd1968d1cd8c1eeb4

SHA512
160ed9990c37a4753fc0f5111c94414568654afbedc05308308197df2a99594f2d5d8fe511fd2279543a869ed20248e603d88a0b9b8fb119e8e6131b0c52ff85

Download Submit
memory/2076-0-0x00000000003C0000-0x0000000000AFB000-memory.dmp

Filesize
7.2MB

Download
memory/2076-1-0x0000000077C40000-0x0000000077C42000-memory.dmp

Filesize
8KB

Download
memory/2076-2-0x0000000000B00000-0x0000000000B01000-memory.dmp

Filesize
4KB

Download
memory/2076-3-0x00000000003C1000-0x0000000000429000-memory.dmp

Filesize
416KB

Download
memory/2076-8-0x00000000003C0000-0x0000000000AFB000-memory.dmp

Filesize
7.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads