stealc | dccdb6e16d2f01e46e021c8887b7353a841d7fce133ec2cb37a5781230ade52e

Analysis

max time kernel
78s
max time network
75s
platform
windows7_x64
resource
win7-20230621-en
resource tags

arch:x64arch:x86image:win7-20230621-enlocale:en-usos:windows7-x64system
submitted
27-06-2023 09:51

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General

Target

b39e78e8dc2c983b3587fffcfd242f05.exe
Size

262KB
MD5

b39e78e8dc2c983b3587fffcfd242f05
SHA1

4648b28f5a8596687e6ad8f20e4ab7642ffc346c
SHA256

dccdb6e16d2f01e46e021c8887b7353a841d7fce133ec2cb37a5781230ade52e
SHA512

28f4accbf55be67b1d7e670a4759b658d337127334ce4231abe27b3b33fe52823243aa1f016deb9f36bf57e814c6f13d6af7e4693e28e9bfb1fd771917b0d7bd
SSDEEP

6144:yU2rW27We/4m0cy2MN3hLcjC9mUWpzTIW:KWul/kX7

Score

10^/10

stealc discovery spyware stealer

Malware Config

Extracted

Family

stealc

http://p�etzelsget.top/3886d2276f6914c4.php

Signatures

Detects Stealc stealer 5 IoCs

stealer

resource	yara_rule
behavioral1/memory/820-55-0x0000000000240000-0x0000000000256000-memory.dmp	family_stealc
behavioral1/memory/820-56-0x0000000000400000-0x0000000000629000-memory.dmp	family_stealc
behavioral1/memory/820-60-0x0000000000400000-0x0000000000629000-memory.dmp	family_stealc
behavioral1/memory/820-80-0x0000000000400000-0x0000000000629000-memory.dmp	family_stealc
behavioral1/memory/820-93-0x0000000000400000-0x0000000000629000-memory.dmp	family_stealc

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Downloads MZ/PE file

Deletes itself 1 IoCs

pid	Process
1772	cmd.exe

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	b39e78e8dc2c983b3587fffcfd242f05.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	b39e78e8dc2c983b3587fffcfd242f05.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
544	timeout.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
820	b39e78e8dc2c983b3587fffcfd242f05.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 820 wrote to memory of 1772	820	b39e78e8dc2c983b3587fffcfd242f05.exe	30
PID 820 wrote to memory of 1772	820	b39e78e8dc2c983b3587fffcfd242f05.exe	30
PID 820 wrote to memory of 1772	820	b39e78e8dc2c983b3587fffcfd242f05.exe	30
PID 820 wrote to memory of 1772	820	b39e78e8dc2c983b3587fffcfd242f05.exe	30
PID 1772 wrote to memory of 544	1772	cmd.exe	32
PID 1772 wrote to memory of 544	1772	cmd.exe	32
PID 1772 wrote to memory of 544	1772	cmd.exe	32
PID 1772 wrote to memory of 544	1772	cmd.exe	32

C:\Users\Admin\AppData\Local\Temp\b39e78e8dc2c983b3587fffcfd242f05.exe
"C:\Users\Admin\AppData\Local\Temp\b39e78e8dc2c983b3587fffcfd242f05.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:820
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\b39e78e8dc2c983b3587fffcfd242f05.exe" & del "C:\ProgramData\*.dll"" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1772
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:544

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/820-54-0x0000000000220000-0x0000000000235000-memory.dmp

Filesize
84KB

Download
memory/820-55-0x0000000000240000-0x0000000000256000-memory.dmp

Filesize
88KB

Download
memory/820-56-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/820-60-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/820-62-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/820-80-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/820-93-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download