stealc | 9120566b5096fc5643a1b64c2ef29fd034c245d52ec244cdf06b6e312e299acf

Analysis

max time kernel
122s
max time network
126s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27/03/2024, 11:16

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General

Target
22b7e30240f2ba7b9f8dc28b8ca8a3e8.exe
Size 252KB
Sample240327-nc5e4aah59
SHA256 9120566b5096fc5643a1b64c2ef29fd034c245d52ec244cdf06b6e312e299acf
MD5 22b7e30240f2ba7b9f8dc28b8ca8a3e8
SHA1 e6ff3a623345ff800c3b5cfed45375face9c9a64
SHA512 20fc8a81d5c3b1ce2abc243c5f046c999f7a904f065a5495334ec10a07fa60b0232c44b42cfb7a7319987852333997658fadc37b877d2d44449949b80d7d5f35
SSDEEP 6144:OvcdMCQi9IKtAEdht4fTPnVujyu7P7uHyl64:9dMCh9IKqEle5uT7uHc
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealc discovery spyware stealer

Malware Config

Extracted

Family

stealc

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

pid	Process
2708	BGCBGCAFII.exe

Loads dropped DLL 3 IoCs

pid	Process
1744	22b7e30240f2ba7b9f8dc28b8ca8a3e8.exe
1744	22b7e30240f2ba7b9f8dc28b8ca8a3e8.exe
2720	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

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	22b7e30240f2ba7b9f8dc28b8ca8a3e8.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	22b7e30240f2ba7b9f8dc28b8ca8a3e8.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1332	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1744	22b7e30240f2ba7b9f8dc28b8ca8a3e8.exe
1744	22b7e30240f2ba7b9f8dc28b8ca8a3e8.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1744 wrote to memory of 2720	1744	22b7e30240f2ba7b9f8dc28b8ca8a3e8.exe	29
PID 1744 wrote to memory of 2720	1744	22b7e30240f2ba7b9f8dc28b8ca8a3e8.exe	29
PID 1744 wrote to memory of 2720	1744	22b7e30240f2ba7b9f8dc28b8ca8a3e8.exe	29
PID 1744 wrote to memory of 2720	1744	22b7e30240f2ba7b9f8dc28b8ca8a3e8.exe	29
PID 2720 wrote to memory of 2708	2720	cmd.exe	31
PID 2720 wrote to memory of 2708	2720	cmd.exe	31
PID 2720 wrote to memory of 2708	2720	cmd.exe	31
PID 2720 wrote to memory of 2708	2720	cmd.exe	31
PID 2708 wrote to memory of 1912	2708	BGCBGCAFII.exe	32
PID 2708 wrote to memory of 1912	2708	BGCBGCAFII.exe	32
PID 2708 wrote to memory of 1912	2708	BGCBGCAFII.exe	32
PID 2708 wrote to memory of 1912	2708	BGCBGCAFII.exe	32
PID 1912 wrote to memory of 1332	1912	cmd.exe	34
PID 1912 wrote to memory of 1332	1912	cmd.exe	34
PID 1912 wrote to memory of 1332	1912	cmd.exe	34
PID 1912 wrote to memory of 1332	1912	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\22b7e30240f2ba7b9f8dc28b8ca8a3e8.exe
"C:\Users\Admin\AppData\Local\Temp\22b7e30240f2ba7b9f8dc28b8ca8a3e8.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1744
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\BGCBGCAFII.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2720
- - C:\Users\Admin\AppData\Local\Temp\BGCBGCAFII.exe
    "C:\Users\Admin\AppData\Local\Temp\BGCBGCAFII.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:2708
  - - 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\BGCBGCAFII.exe
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1912
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping 2.2.2.2 -n 1 -w 3000
        5⤵
        Runs ping.exe
        
        PID:1332

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

mozglue.dll

Path \ProgramData\mozglue.dll
Size 593KB
SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
MD5 c8fd9be83bc728cc04beffafc2907fe9
SHA1 95ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA512 fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040
SSDEEP 12288:BlSyAom/gcRKMdRm4wFkRHuyG4RRGJVDjMk/x21R8gY/r:BKgcRKMdRm4wFkVVDGJVv//x21R8br
MD5 SHA1 SHA512 SSDEEP

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nss3.dll

Path \ProgramData\nss3.dll
Size 2.0MB
SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
MD5 1cc453cdf74f31e4d913ff9c10acdde2
SHA1 6e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA512 dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571
SSDEEP 49152:fECf12gikHlnKGxJRIB+y5nvxnaOSJ3HFNWYrVvE4CQsgzMmQfTU1NrWmy4KoAzh:J7Tf8J1Q+SS5/nr
MD5 SHA1 SHA512 SSDEEP

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BGCBGCAFII.exe

Path \Users\Admin\AppData\Local\Temp\BGCBGCAFII.exe
Size 106KB
SHA256 b64a84d1f88e4e78464a1901c1cb5bbd5f00bb73203d719e64e072157a087b53
MD5 fe380780b5c35bd6d54541791151c2be
SHA1 7fe3a583cf91474c733f85cebf3c857682e269e1
SHA512 ba05ba8aa13c4bc1cf98fbf6c08b021e8b19354098e0397fc8e1e5d3dcce367c1063203f24e50d0973193f6535681d0a43486e5dade5d112853b7a2fe8739b6c
SSDEEP 1536:lIpbrxKOcuS11Phbiyn2TCdfGyJVGJkyrt517EwM+UPpe5xKOcuS11Phbiyn2TCf:KpbrsISnRGPJkGt74GsISnRF
MD5 SHA1 SHA512 SSDEEP

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memory/1744-36-0x0000000000400000-0x000000000063B000-memory.dmp

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memory/1744-1-0x0000000000290000-0x0000000000390000-memory.dmp

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memory/1744-43-0x0000000000290000-0x0000000000390000-memory.dmp

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memory/1744-47-0x0000000000400000-0x000000000063B000-memory.dmp

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memory/1744-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

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memory/1744-3-0x0000000000400000-0x000000000063B000-memory.dmp

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memory/1744-70-0x0000000000400000-0x000000000063B000-memory.dmp

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memory/1744-71-0x0000000000290000-0x0000000000390000-memory.dmp

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memory/1744-2-0x00000000001B0000-0x00000000001D7000-memory.dmp

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memory/2708-75-0x0000000000F10000-0x0000000000F30000-memory.dmp

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memory/2708-76-0x0000000073CA0000-0x000000007438E000-memory.dmp

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memory/2708-77-0x0000000004860000-0x00000000048A0000-memory.dmp

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memory/2708-79-0x0000000073CA0000-0x000000007438E000-memory.dmp

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