stealc | f6559e9de5695802ff471ea1769587e6f93aa9a3c1e29451b4b304886ca8489a

General

Target

f6559e9de5695802ff471ea1769587e6f93aa9a3c1e29451b4b304886ca8489a_JC.exe
Size

295KB
MD5

1ea10b9fa4fba01caf0cc5c7fd27cf62
SHA1

07d2db54a92bc6f15316c60989af5ead8d3b9db9
SHA256

f6559e9de5695802ff471ea1769587e6f93aa9a3c1e29451b4b304886ca8489a
SHA512

b36be2a063e6fd52a95ff77f48f1b83bd35e0bbdcbe9c6efc9f985723ec52d689337b0d1fee526dbbbe36c6c2ea5f0e2e760c0e5acd303237f809b2159264294
SSDEEP

3072:G2hQqSvx/Ja8lVskJSJvQ1YpVpt8W5gLPgG2IA6wVkNVS:jhQ/vtJa8lqcMp6igLIG2VPe

Score

10^/10

stealc discovery spyware stealer

Malware Config

Extracted

Family

stealc

C2

http://aidandylan.top

Attributes

url_path
/3886d2276f6914c4.php

rc4.plain

Signatures

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

Deletes itself 1 IoCs

pid	Process
1504	cmd.exe

Loads dropped DLL 2 IoCs

pid	Process
2824	f6559e9de5695802ff471ea1769587e6f93aa9a3c1e29451b4b304886ca8489a_JC.exe
2824	f6559e9de5695802ff471ea1769587e6f93aa9a3c1e29451b4b304886ca8489a_JC.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

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
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	f6559e9de5695802ff471ea1769587e6f93aa9a3c1e29451b4b304886ca8489a_JC.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f6559e9de5695802ff471ea1769587e6f93aa9a3c1e29451b4b304886ca8489a_JC.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2768	timeout.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2824	f6559e9de5695802ff471ea1769587e6f93aa9a3c1e29451b4b304886ca8489a_JC.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2824 wrote to memory of 1504	2824	f6559e9de5695802ff471ea1769587e6f93aa9a3c1e29451b4b304886ca8489a_JC.exe	31
PID 2824 wrote to memory of 1504	2824	f6559e9de5695802ff471ea1769587e6f93aa9a3c1e29451b4b304886ca8489a_JC.exe	31
PID 2824 wrote to memory of 1504	2824	f6559e9de5695802ff471ea1769587e6f93aa9a3c1e29451b4b304886ca8489a_JC.exe	31
PID 2824 wrote to memory of 1504	2824	f6559e9de5695802ff471ea1769587e6f93aa9a3c1e29451b4b304886ca8489a_JC.exe	31
PID 1504 wrote to memory of 2768	1504	cmd.exe	33
PID 1504 wrote to memory of 2768	1504	cmd.exe	33
PID 1504 wrote to memory of 2768	1504	cmd.exe	33
PID 1504 wrote to memory of 2768	1504	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\f6559e9de5695802ff471ea1769587e6f93aa9a3c1e29451b4b304886ca8489a_JC.exe
"C:\Users\Admin\AppData\Local\Temp\f6559e9de5695802ff471ea1769587e6f93aa9a3c1e29451b4b304886ca8489a_JC.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2824
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\f6559e9de5695802ff471ea1769587e6f93aa9a3c1e29451b4b304886ca8489a_JC.exe" & del "C:\ProgramData\*.dll"" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1504
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:2768

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
memory/2824-4-0x0000000002310000-0x0000000002410000-memory.dmp

Filesize
1024KB

Download
memory/2824-1-0x0000000002310000-0x0000000002410000-memory.dmp

Filesize
1024KB

Download
memory/2824-5-0x0000000000400000-0x0000000002290000-memory.dmp

Filesize
30.6MB

Download
memory/2824-6-0x00000000002B0000-0x00000000002CB000-memory.dmp

Filesize
108KB

Download
memory/2824-7-0x0000000000400000-0x0000000002290000-memory.dmp

Filesize
30.6MB

Download
memory/2824-8-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2824-3-0x0000000000400000-0x0000000002290000-memory.dmp

Filesize
30.6MB

Download
memory/2824-2-0x00000000002B0000-0x00000000002CB000-memory.dmp

Filesize
108KB

Download
memory/2824-66-0x0000000000400000-0x0000000002290000-memory.dmp

Filesize
30.6MB

Download
memory/2824-72-0x0000000000400000-0x0000000002290000-memory.dmp

Filesize
30.6MB

Download
memory/2824-73-0x0000000002310000-0x0000000002410000-memory.dmp

Filesize
1024KB

Download

Analysis

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