stealc | fbda3c81d4d2b94263d3a6b5bec8bde073a8c3933a57b852ea8f37ece15ed594

General

Target
xfbda3c81d4d2b94263d3a6b5bec8bde073a8c3933a57b852ea8f37ece15ed594.exe
Size 6.9MB
Sample260415-2a7z4adv91
SHA256 fbda3c81d4d2b94263d3a6b5bec8bde073a8c3933a57b852ea8f37ece15ed594
MD5 cef22c63c964b776fdaa5f0733084b14
SHA1 3bb06e3f3fe44289fd24cd0944bb4e4c9b381796
SHA512 ab98563261420969c3e012f7801a730d6149f4f477afc7243961523949d5e17b4612fc53d007b4b76c97d28ddc1e41351ff19829b24b5b3229da7ce582ba2123
SSDEEP 12288:PuVv9r0Ytp3V2sjJ1AGifS2FFhwDRt0WnsFj4HLdtflH1yKmPZPx4wZMbMj7XCL3:PK9xtZYsjJ1AYnIqZTkKOZPxv+L3k1C
TLSH
T1D3760291DBC80FEEECF7053888F9158AD3B039664655698F4FB67B068F639C0053EA49
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

l1man discovery stealc spyware stealer

Malware Config

Extracted

Family

stealc

Botnet

l1man

C2

http://95.85.238.4

Attributes

url_path
/e99c8470d3ebe7696e4a.php

rc4.traffic_key

rc4.C2

Signatures

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

Detects Stealc stealer Version 2 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000024462-2.dat	family_stealc_v2

Executes dropped EXE 1 IoCs

pid	Process
824	CorsairService.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003
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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	CorsairService.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	CorsairService.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
824	CorsairService.exe
824	CorsairService.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3832 wrote to memory of 824	3832	xfbda3c81d4d2b94263d3a6b5bec8bde073a8c3933a57b852ea8f37ece15ed594.exe	84
PID 824 wrote to memory of 4804	824	CorsairService.exe	92
PID 824 wrote to memory of 4804	824	CorsairService.exe	92
PID 824 wrote to memory of 3972	824	CorsairService.exe	95
PID 824 wrote to memory of 3972	824	CorsairService.exe	95
PID 824 wrote to memory of 2884	824	CorsairService.exe	100
PID 824 wrote to memory of 2884	824	CorsairService.exe	100
PID 824 wrote to memory of 2232	824	CorsairService.exe	103
PID 824 wrote to memory of 2232	824	CorsairService.exe	103

C:\Users\Admin\AppData\Local\Temp\xfbda3c81d4d2b94263d3a6b5bec8bde073a8c3933a57b852ea8f37ece15ed594.exe
"C:\Users\Admin\AppData\Local\Temp\xfbda3c81d4d2b94263d3a6b5bec8bde073a8c3933a57b852ea8f37ece15ed594.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3832
- C:\Users\Admin\AppData\Local\Programs\CorsairService.exe
  "C:\Users\Admin\AppData\Local\Programs\CorsairService.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:824
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    3⤵
    PID:4804
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:3972
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:2884
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:2232

C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
"C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
1⤵
PID:3644

C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
"C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
1⤵
PID:4616

C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"
1⤵
PID:4452

C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"
1⤵
PID:3692

C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"
1⤵
PID:1632

C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"
1⤵
PID:5036

C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"
1⤵
PID:780

C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"
1⤵
PID:1424

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

3802D9CD-6D7E-7919-C205-E691EABDCE89.txt

Path C:\ProgramData\3802D9CD-6D7E-7919-C205-E691EABDCE89.txt
Size 64B
SHA256 750369a066850339876c990114369783d5ceab155bbe1e3aa698cd02f8db6d31
MD5 5f71e821e4d2562eed2dfe8ffe18c49c
SHA1 f365b7dffd9fec5b225ea75f478528de81aff1eb
SHA512 6794cd3ee371ee90f519c7c6ae0e41ae735818a8b555cdee3fe4e1257bdaf0763ba2be62d8be7f7beb4f707e778506980f22fa322774a3ae5c74b9cfb39e058c
TLSH
T1DAA02282380B08F8A0020E20E3F200280080882802E00003CB3A20800000303CC22FAA
MD5 SHA1 SHA512 TLSH

Submit Download

CorsairService.exe

Path C:\Users\Admin\AppData\Local\Programs\CorsairService.exe
Size 761KB
SHA256 5f887e337fde25715c73dae1ff5a4f3034e783e41629c14e5407ee6bb70eb12c
MD5 bfb74ebd666dfd721c842e6c2add3476
SHA1 69bd3492a1458f1d1d94d0dda3a439c70075b802
SHA512 d8f0da92862eeb7351162899d537ccd59b9c35ba5cb9b3454c22f9f0f1612075853e47e6460dfb1de6a09fce2288d00a309cca0a9b16bb429aa5c3000008f635
SSDEEP 12288:JzvOznjd7Dkqya3OJXJyZzNP8GTop8mWO88yxBlDetAqxSva:8XOqyzJXIPkEWRTvybS
TLSH
T172F48C1BE7A602F9D1B7C274CA424957E772B8065370978F03E14AA61F376909F3EB21
MD5 SHA1 SHA512 SSDEEP TLSH