stealc | 4cbc69704efc2c428fd13988476430c8ec7e105e56b10c07bff1afa5d8d99c69

General

Target

4cbc69704efc2c428fd13988476430c8ec7e105e56b10c07bff1afa5d8d99c69.exe
Size

181KB
MD5

22b5a513db4af9a232bf0529704e2449
SHA1

f59317dec43682e7ccf5db0d6d8a6465b27ee964
SHA256

4cbc69704efc2c428fd13988476430c8ec7e105e56b10c07bff1afa5d8d99c69
SHA512

5c91d72da0ed761789b08a7d0868bac0298ee991e4e0d72efed77d2ef3c43ff92e6a0c7ec77e0e977ce4aef1632fac018cc5ebd1707a1784af15eb123e8765f7
SSDEEP

3072:l+1s6SOYKwGwJbgrWFSQf4Yoeelc4C7lB9YUrzG19T:QTTYdVAW1f4YQ7C7lBZ6

Score

10^/10

stealc discovery spyware stealer

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.145

Attributes

url_path
/3cd2b41cbde8fc9c.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc

Detect binaries embedding considerable number of MFA browser extension IDs. 3 IoCs

resource	yara_rule
behavioral1/memory/2972-63-0x0000000000400000-0x0000000000823000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_MFA_Browser_Extension_IDs
behavioral1/memory/2972-69-0x0000000000400000-0x0000000000823000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_MFA_Browser_Extension_IDs
behavioral1/memory/2972-70-0x0000000000250000-0x0000000000350000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_MFA_Browser_Extension_IDs

Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 3 IoCs

resource	yara_rule
behavioral1/memory/2972-63-0x0000000000400000-0x0000000000823000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs
behavioral1/memory/2972-69-0x0000000000400000-0x0000000000823000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs
behavioral1/memory/2972-70-0x0000000000250000-0x0000000000350000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 2 IoCs

resource	yara_rule
behavioral1/memory/2972-63-0x0000000000400000-0x0000000000823000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2972-69-0x0000000000400000-0x0000000000823000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
2972	4cbc69704efc2c428fd13988476430c8ec7e105e56b10c07bff1afa5d8d99c69.exe
2972	4cbc69704efc2c428fd13988476430c8ec7e105e56b10c07bff1afa5d8d99c69.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
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

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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	4cbc69704efc2c428fd13988476430c8ec7e105e56b10c07bff1afa5d8d99c69.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	4cbc69704efc2c428fd13988476430c8ec7e105e56b10c07bff1afa5d8d99c69.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2972	4cbc69704efc2c428fd13988476430c8ec7e105e56b10c07bff1afa5d8d99c69.exe
2972	4cbc69704efc2c428fd13988476430c8ec7e105e56b10c07bff1afa5d8d99c69.exe

C:\Users\Admin\AppData\Local\Temp\4cbc69704efc2c428fd13988476430c8ec7e105e56b10c07bff1afa5d8d99c69.exe
"C:\Users\Admin\AppData\Local\Temp\4cbc69704efc2c428fd13988476430c8ec7e105e56b10c07bff1afa5d8d99c69.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:2972

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

3

T1552

Credentials In Files

3

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

3

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/2972-1-0x0000000000250000-0x0000000000350000-memory.dmp

Filesize
1024KB

Download
memory/2972-2-0x00000000003C0000-0x00000000003F4000-memory.dmp

Filesize
208KB

Download
memory/2972-3-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2972-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2972-63-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2972-69-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2972-70-0x0000000000250000-0x0000000000350000-memory.dmp

Filesize
1024KB

Download

Analysis

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