stealc | 6f7aad02384477c96833be0fef115412e2dc1c05d059f40c4ec13194e8308eeb

General

Target

cf267f31af942869a51ff10d3cadb637.exe
Size

218KB
MD5

cf267f31af942869a51ff10d3cadb637
SHA1

6c612523c12cd2a0e71deb7114427f6656cd58dc
SHA256

6f7aad02384477c96833be0fef115412e2dc1c05d059f40c4ec13194e8308eeb
SHA512

36dd1d8c70f042ceb111cd6456d70a1fd7e83764441748216421fed83e2ffeea2fcd842c700c09226a5bb07a61f1c3948afcc0b10a07dd5fa827575bc0b43fd4
SSDEEP

3072:qUBTqPKGYOrEQAQB0fzahcaFnztzmrl9JrMw9ja2bwiOp:qKqPKGYOrEzQBXtnzsr54w9j/bwiO

Score

10^/10

stealc discovery spyware stealer

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.26

Attributes

url_path
/f993692117a3fda2.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

CFBFHIEBKJ.exe

pid process

2584 CFBFHIEBKJ.exe
Loads dropped DLL 3 IoCs

Processes:

cf267f31af942869a51ff10d3cadb637.execmd.exe

pid process

2036 cf267f31af942869a51ff10d3cadb637.exe
2036 cf267f31af942869a51ff10d3cadb637.exe
2688 cmd.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
2584	CFBFHIEBKJ.exe

pid	process
2036	cf267f31af942869a51ff10d3cadb637.exe
2036	cf267f31af942869a51ff10d3cadb637.exe
2688	cmd.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:

cf267f31af942869a51ff10d3cadb637.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	cf267f31af942869a51ff10d3cadb637.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	cf267f31af942869a51ff10d3cadb637.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

1972 PING.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

cf267f31af942869a51ff10d3cadb637.exe

pid process

2036 cf267f31af942869a51ff10d3cadb637.exe
2036 cf267f31af942869a51ff10d3cadb637.exe

pid	process
1972	PING.EXE

pid	process
2036	cf267f31af942869a51ff10d3cadb637.exe
2036	cf267f31af942869a51ff10d3cadb637.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

cf267f31af942869a51ff10d3cadb637.execmd.exeCFBFHIEBKJ.execmd.exe

description	pid	process	target process
PID 2036 wrote to memory of 2688	2036	cf267f31af942869a51ff10d3cadb637.exe	cmd.exe
PID 2036 wrote to memory of 2688	2036	cf267f31af942869a51ff10d3cadb637.exe	cmd.exe
PID 2036 wrote to memory of 2688	2036	cf267f31af942869a51ff10d3cadb637.exe	cmd.exe
PID 2036 wrote to memory of 2688	2036	cf267f31af942869a51ff10d3cadb637.exe	cmd.exe
PID 2688 wrote to memory of 2584	2688	cmd.exe	CFBFHIEBKJ.exe
PID 2688 wrote to memory of 2584	2688	cmd.exe	CFBFHIEBKJ.exe
PID 2688 wrote to memory of 2584	2688	cmd.exe	CFBFHIEBKJ.exe
PID 2688 wrote to memory of 2584	2688	cmd.exe	CFBFHIEBKJ.exe
PID 2584 wrote to memory of 1624	2584	CFBFHIEBKJ.exe	cmd.exe
PID 2584 wrote to memory of 1624	2584	CFBFHIEBKJ.exe	cmd.exe
PID 2584 wrote to memory of 1624	2584	CFBFHIEBKJ.exe	cmd.exe
PID 2584 wrote to memory of 1624	2584	CFBFHIEBKJ.exe	cmd.exe
PID 1624 wrote to memory of 1972	1624	cmd.exe	PING.EXE
PID 1624 wrote to memory of 1972	1624	cmd.exe	PING.EXE
PID 1624 wrote to memory of 1972	1624	cmd.exe	PING.EXE
PID 1624 wrote to memory of 1972	1624	cmd.exe	PING.EXE

C:\Users\Admin\AppData\Local\Temp\cf267f31af942869a51ff10d3cadb637.exe
"C:\Users\Admin\AppData\Local\Temp\cf267f31af942869a51ff10d3cadb637.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\CFBFHIEBKJ.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2688
- - C:\Users\Admin\AppData\Local\Temp\CFBFHIEBKJ.exe
    "C:\Users\Admin\AppData\Local\Temp\CFBFHIEBKJ.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:2584
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C ping 2.2.2.2 -n 1 -w 3000 > Nul & Del C:\Users\Admin\AppData\Local\Temp\CFBFHIEBKJ.exe
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1624
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping 2.2.2.2 -n 1 -w 3000
        5⤵
        Runs ping.exe
        
        PID:1972

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

Remote System Discovery

1

T1018

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

C:\Users\Admin\AppData\Local\Temp\CFBFHIEBKJ.exe

Filesize
106KB

MD5
fe380780b5c35bd6d54541791151c2be

SHA1
7fe3a583cf91474c733f85cebf3c857682e269e1

SHA256
b64a84d1f88e4e78464a1901c1cb5bbd5f00bb73203d719e64e072157a087b53

SHA512
ba05ba8aa13c4bc1cf98fbf6c08b021e8b19354098e0397fc8e1e5d3dcce367c1063203f24e50d0973193f6535681d0a43486e5dade5d112853b7a2fe8739b6c

Download Submit
\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/2036-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2036-45-0x0000000000400000-0x0000000002B60000-memory.dmp

Filesize
39.4MB

Download
memory/2036-1-0x0000000002C10000-0x0000000002D10000-memory.dmp

Filesize
1024KB

Download
memory/2036-3-0x0000000000400000-0x0000000002B60000-memory.dmp

Filesize
39.4MB

Download
memory/2036-72-0x0000000000400000-0x0000000002B60000-memory.dmp

Filesize
39.4MB

Download
memory/2036-2-0x0000000000220000-0x0000000000247000-memory.dmp

Filesize
156KB

Download
memory/2036-76-0x0000000002C10000-0x0000000002D10000-memory.dmp

Filesize
1024KB

Download
memory/2584-77-0x0000000073500000-0x0000000073BEE000-memory.dmp

Filesize
6.9MB

Download
memory/2584-78-0x0000000000E80000-0x0000000000EA0000-memory.dmp

Filesize
128KB

Download
memory/2584-79-0x0000000000E20000-0x0000000000E60000-memory.dmp

Filesize
256KB

Download
memory/2584-81-0x0000000073500000-0x0000000073BEE000-memory.dmp

Filesize
6.9MB

Download

Analysis

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