stealc | 441f614bb8a71a458b9f8274f807c33550d0a91304b7b1bc25c23c6cd8d9b616

General

Target

441f614bb8a71a458b9f8274f807c33550d0a91304b7b1bc25c23c6cd8d9b616.exe
Size

2.4MB
MD5

7ad17f11aa6b1408999981b11078d674
SHA1

57a4856e4db83685852d7c6037bb1bbde4793415
SHA256

441f614bb8a71a458b9f8274f807c33550d0a91304b7b1bc25c23c6cd8d9b616
SHA512

06f7dbbe0fbba7615742840c5aa0e77f87bca47eb85bc5d5b33d5785d76e9a705e4d6ce0e068f43f45986405dcaf7171dfd6bd2bbd832e2eced0032ab4695e65
SSDEEP

49152:xyOXuqDgypjKg6wY7p6ZJ99hZUNs9TlID4zmjfs49s/9khpXnDD:RDdj97Y7p6ZJhZeCJOTsqD

Score

10^/10

stealc nice discovery spyware stealer

Malware Config

Extracted

Family

stealc

Botnet

Nice

C2

http://85.28.47.30

Attributes

url_path
/920475a59bac849d.php

Signatures

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

Deletes itself 1 IoCs

pid	Process
852	cmd.exe

Loads dropped DLL 2 IoCs

pid	Process
2700	441f614bb8a71a458b9f8274f807c33550d0a91304b7b1bc25c23c6cd8d9b616.exe
2700	441f614bb8a71a458b9f8274f807c33550d0a91304b7b1bc25c23c6cd8d9b616.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

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2700	441f614bb8a71a458b9f8274f807c33550d0a91304b7b1bc25c23c6cd8d9b616.exe
2700	441f614bb8a71a458b9f8274f807c33550d0a91304b7b1bc25c23c6cd8d9b616.exe

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	441f614bb8a71a458b9f8274f807c33550d0a91304b7b1bc25c23c6cd8d9b616.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	441f614bb8a71a458b9f8274f807c33550d0a91304b7b1bc25c23c6cd8d9b616.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2064	timeout.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2700	441f614bb8a71a458b9f8274f807c33550d0a91304b7b1bc25c23c6cd8d9b616.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2700	441f614bb8a71a458b9f8274f807c33550d0a91304b7b1bc25c23c6cd8d9b616.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2700 wrote to memory of 852	2700	441f614bb8a71a458b9f8274f807c33550d0a91304b7b1bc25c23c6cd8d9b616.exe	31
PID 2700 wrote to memory of 852	2700	441f614bb8a71a458b9f8274f807c33550d0a91304b7b1bc25c23c6cd8d9b616.exe	31
PID 2700 wrote to memory of 852	2700	441f614bb8a71a458b9f8274f807c33550d0a91304b7b1bc25c23c6cd8d9b616.exe	31
PID 2700 wrote to memory of 852	2700	441f614bb8a71a458b9f8274f807c33550d0a91304b7b1bc25c23c6cd8d9b616.exe	31
PID 852 wrote to memory of 2064	852	cmd.exe	33
PID 852 wrote to memory of 2064	852	cmd.exe	33
PID 852 wrote to memory of 2064	852	cmd.exe	33
PID 852 wrote to memory of 2064	852	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\441f614bb8a71a458b9f8274f807c33550d0a91304b7b1bc25c23c6cd8d9b616.exe
"C:\Users\Admin\AppData\Local\Temp\441f614bb8a71a458b9f8274f807c33550d0a91304b7b1bc25c23c6cd8d9b616.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2700
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\441f614bb8a71a458b9f8274f807c33550d0a91304b7b1bc25c23c6cd8d9b616.exe" & del "C:\ProgramData\*.dll"" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:852
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:2064

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

2

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/2700-0-0x0000000001120000-0x0000000001D0C000-memory.dmp

Filesize
11.9MB

Download
memory/2700-1-0x000000007EBD0000-0x000000007EFA1000-memory.dmp

Filesize
3.8MB

Download
memory/2700-2-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2700-63-0x000000007EBD0000-0x000000007EFA1000-memory.dmp

Filesize
3.8MB

Download
memory/2700-62-0x0000000001120000-0x0000000001D0C000-memory.dmp

Filesize
11.9MB

Download

Analysis

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