stealc | 3161e8351ef07f9062f67505f0a875924269e0098cb95075084a4f59e8c2e988

General

Target

5b8615896e85dd6af58f2d907f1653bc.exe
Size

323KB
MD5

5b8615896e85dd6af58f2d907f1653bc
SHA1

6ba8e7da63c54173c3f4fbf06c783562eb43d813
SHA256

3161e8351ef07f9062f67505f0a875924269e0098cb95075084a4f59e8c2e988
SHA512

3d65986e4e1f5d0110741ac877d04658c13d58132138e6f9ed0bec5ca8768288690a372a9b81a2e906f74c1623247aae5e96f2aa8a846b9b4b19868e1fe0c3f3
SSDEEP

6144:Tm6qwi5Uh3UnQagtkTkrIwcdPXhaNTagOPnPfewt5/:a6qwi5Uh3MCePPdXMANne

Score

10^/10

stealc discovery spyware stealer

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.210

Attributes

url_path
/f993692117a3fda2.php

Signatures

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

Deletes itself 1 IoCs

pid	Process
2720	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1840	FCAFIJJJKE.exe

Loads dropped DLL 3 IoCs

pid	Process
2476	5b8615896e85dd6af58f2d907f1653bc.exe
2476	5b8615896e85dd6af58f2d907f1653bc.exe
2724	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	5b8615896e85dd6af58f2d907f1653bc.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	5b8615896e85dd6af58f2d907f1653bc.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2800	timeout.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2380	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2476	5b8615896e85dd6af58f2d907f1653bc.exe
2476	5b8615896e85dd6af58f2d907f1653bc.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2476 wrote to memory of 2724	2476	5b8615896e85dd6af58f2d907f1653bc.exe	29
PID 2476 wrote to memory of 2724	2476	5b8615896e85dd6af58f2d907f1653bc.exe	29
PID 2476 wrote to memory of 2724	2476	5b8615896e85dd6af58f2d907f1653bc.exe	29
PID 2476 wrote to memory of 2724	2476	5b8615896e85dd6af58f2d907f1653bc.exe	29
PID 2476 wrote to memory of 2720	2476	5b8615896e85dd6af58f2d907f1653bc.exe	31
PID 2476 wrote to memory of 2720	2476	5b8615896e85dd6af58f2d907f1653bc.exe	31
PID 2476 wrote to memory of 2720	2476	5b8615896e85dd6af58f2d907f1653bc.exe	31
PID 2476 wrote to memory of 2720	2476	5b8615896e85dd6af58f2d907f1653bc.exe	31
PID 2720 wrote to memory of 2800	2720	cmd.exe	33
PID 2720 wrote to memory of 2800	2720	cmd.exe	33
PID 2720 wrote to memory of 2800	2720	cmd.exe	33
PID 2720 wrote to memory of 2800	2720	cmd.exe	33
PID 2724 wrote to memory of 1840	2724	cmd.exe	34
PID 2724 wrote to memory of 1840	2724	cmd.exe	34
PID 2724 wrote to memory of 1840	2724	cmd.exe	34
PID 2724 wrote to memory of 1840	2724	cmd.exe	34
PID 1840 wrote to memory of 1544	1840	FCAFIJJJKE.exe	35
PID 1840 wrote to memory of 1544	1840	FCAFIJJJKE.exe	35
PID 1840 wrote to memory of 1544	1840	FCAFIJJJKE.exe	35
PID 1840 wrote to memory of 1544	1840	FCAFIJJJKE.exe	35
PID 1544 wrote to memory of 2380	1544	cmd.exe	37
PID 1544 wrote to memory of 2380	1544	cmd.exe	37
PID 1544 wrote to memory of 2380	1544	cmd.exe	37
PID 1544 wrote to memory of 2380	1544	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\5b8615896e85dd6af58f2d907f1653bc.exe
"C:\Users\Admin\AppData\Local\Temp\5b8615896e85dd6af58f2d907f1653bc.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2476
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\FCAFIJJJKE.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2724
- - C:\Users\Admin\AppData\Local\Temp\FCAFIJJJKE.exe
    "C:\Users\Admin\AppData\Local\Temp\FCAFIJJJKE.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:1840
  - - 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\FCAFIJJJKE.exe
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1544
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping 2.2.2.2 -n 1 -w 3000
        5⤵
        Runs ping.exe
        
        PID:2380
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\5b8615896e85dd6af58f2d907f1653bc.exe" & del "C:\ProgramData\*.dll"" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2720
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:2800

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\FCAFIJJJKE.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/1840-86-0x0000000074B60000-0x000000007524E000-memory.dmp

Filesize
6.9MB

Download
memory/1840-84-0x00000000046B0000-0x00000000046F0000-memory.dmp

Filesize
256KB

Download
memory/1840-83-0x0000000074B60000-0x000000007524E000-memory.dmp

Filesize
6.9MB

Download
memory/1840-82-0x0000000000350000-0x0000000000370000-memory.dmp

Filesize
128KB

Download
memory/2476-63-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2476-77-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2476-78-0x0000000000A80000-0x0000000000B80000-memory.dmp

Filesize
1024KB

Download
memory/2476-73-0x0000000000A80000-0x0000000000B80000-memory.dmp

Filesize
1024KB

Download
memory/2476-3-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2476-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2476-1-0x0000000000A80000-0x0000000000B80000-memory.dmp

Filesize
1024KB

Download
memory/2476-2-0x0000000000250000-0x0000000000277000-memory.dmp

Filesize
156KB

Download

Analysis

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