stealc | 2ad46d1e3c84a67063d7b773b774640c4f52ce27607a7559174177f2dcbdca3c

General

Target

ffd9def9418d3d140e0e9e39e88ad898.exe
Size

306KB
MD5

ffd9def9418d3d140e0e9e39e88ad898
SHA1

c71b244c51ac349e2f7a41f7a55a27fc1ca8361a
SHA256

2ad46d1e3c84a67063d7b773b774640c4f52ce27607a7559174177f2dcbdca3c
SHA512

015020adb4dc8b73174388965fb7bc9a7770b7a57f580ec631ca4a11d99383e6cc3c1ab08bac0ebf12b00f05ec1af53b557cba25646f452fb13e0efdd030951a
SSDEEP

3072:b3OxChMwp/fzpHctNq+IbLO4bIimy+OZYgluJOxguQhjZXCw0gYKoiHEyI7IuU:L957FLzjw6ZNuJSQhjgZVmEy+U

Score

10^/10

stealc discovery spyware stealer

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.151

Attributes

url_path
/7043a0c6a68d9c65.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Downloads MZ/PE file
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1360 cmd.exe
Loads dropped DLL 2 IoCs

Processes:

ffd9def9418d3d140e0e9e39e88ad898.exe

pid process

1620 ffd9def9418d3d140e0e9e39e88ad898.exe
1620 ffd9def9418d3d140e0e9e39e88ad898.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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1360	cmd.exe

pid	process
1620	ffd9def9418d3d140e0e9e39e88ad898.exe
1620	ffd9def9418d3d140e0e9e39e88ad898.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:

ffd9def9418d3d140e0e9e39e88ad898.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ffd9def9418d3d140e0e9e39e88ad898.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	ffd9def9418d3d140e0e9e39e88ad898.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2684 timeout.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

ffd9def9418d3d140e0e9e39e88ad898.exe

pid process

1620 ffd9def9418d3d140e0e9e39e88ad898.exe

pid	process
2684	timeout.exe

pid	process
1620	ffd9def9418d3d140e0e9e39e88ad898.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

ffd9def9418d3d140e0e9e39e88ad898.execmd.exe

description	pid	process	target process
PID 1620 wrote to memory of 1360	1620	ffd9def9418d3d140e0e9e39e88ad898.exe	cmd.exe
PID 1620 wrote to memory of 1360	1620	ffd9def9418d3d140e0e9e39e88ad898.exe	cmd.exe
PID 1620 wrote to memory of 1360	1620	ffd9def9418d3d140e0e9e39e88ad898.exe	cmd.exe
PID 1620 wrote to memory of 1360	1620	ffd9def9418d3d140e0e9e39e88ad898.exe	cmd.exe
PID 1360 wrote to memory of 2684	1360	cmd.exe	timeout.exe
PID 1360 wrote to memory of 2684	1360	cmd.exe	timeout.exe
PID 1360 wrote to memory of 2684	1360	cmd.exe	timeout.exe
PID 1360 wrote to memory of 2684	1360	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\ffd9def9418d3d140e0e9e39e88ad898.exe
"C:\Users\Admin\AppData\Local\Temp\ffd9def9418d3d140e0e9e39e88ad898.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1620

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\ffd9def9418d3d140e0e9e39e88ad898.exe" & del "C:\ProgramData\*.dll"" & exit
2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1360

C:\Windows\SysWOW64\timeout.exe
timeout /t 5
3⤵
- Delays execution with timeout.exe
PID:2684

Network

MITRE ATT&CK Matrix ATT&CK v13

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

2

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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/1620-1-0x0000000001AE0000-0x0000000001BE0000-memory.dmp

Filesize
1024KB

Download
memory/1620-2-0x0000000000220000-0x0000000000247000-memory.dmp

Filesize
156KB

Download
memory/1620-3-0x0000000000400000-0x0000000001A18000-memory.dmp

Filesize
22.1MB

Download
memory/1620-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/1620-67-0x0000000000400000-0x0000000001A18000-memory.dmp

Filesize
22.1MB

Download
memory/1620-74-0x0000000000400000-0x0000000001A18000-memory.dmp

Filesize
22.1MB

Download

Analysis

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