stealc | 31c6a028ab500d3b8c6d53c5827ffdd773146a55306f3196271dce2f548aa020

General

Target

31c6a028ab500d3b8c6d53c5827ffdd773146a55306f3196271dce2f548aa020.exe
Size

414KB
MD5

32da82af183c6de4e3874d5760b65168
SHA1

7be8f0dc1bfc8f172b407a366f19aec9d30684c4
SHA256

31c6a028ab500d3b8c6d53c5827ffdd773146a55306f3196271dce2f548aa020
SHA512

03927e0a5eaf71b0469a41ede18b8a6eae2ed569da6e67c3dac33d7d78b3c1262ef2729da39cfd0c8856cc1e25cad9bb2c7f3a0b1c1690a79f20dee8384cf147
SSDEEP

6144:kUBes6jA+uS+YRiXbr41hssVhBM+gOmHs0EE2ovTCsqXd3zCEKV:1j6U+ulYRYv4zx4pMBAvTmFKV

Score

10^/10

stealc discovery spyware stealer

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.209

Attributes

url_path
/3cd2b41cbde8fc9c.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc

Detect binaries embedding considerable number of MFA browser extension IDs. 3 IoCs

resource	yara_rule
behavioral1/memory/2948-88-0x0000000000400000-0x000000000063B000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_MFA_Browser_Extension_IDs
behavioral1/memory/2948-92-0x0000000000400000-0x000000000063B000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_MFA_Browser_Extension_IDs
behavioral1/memory/2948-93-0x00000000007B0000-0x00000000008B0000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_MFA_Browser_Extension_IDs

Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 3 IoCs

resource	yara_rule
behavioral1/memory/2948-88-0x0000000000400000-0x000000000063B000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs
behavioral1/memory/2948-92-0x0000000000400000-0x000000000063B000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs
behavioral1/memory/2948-93-0x00000000007B0000-0x00000000008B0000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 2 IoCs

resource	yara_rule
behavioral1/memory/2948-88-0x0000000000400000-0x000000000063B000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2948-92-0x0000000000400000-0x000000000063B000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
2948	u1p8.0.exe
2168	ECAFHIIJJE.exe

Loads dropped DLL 7 IoCs

pid	Process
2204	31c6a028ab500d3b8c6d53c5827ffdd773146a55306f3196271dce2f548aa020.exe
2204	31c6a028ab500d3b8c6d53c5827ffdd773146a55306f3196271dce2f548aa020.exe
2204	31c6a028ab500d3b8c6d53c5827ffdd773146a55306f3196271dce2f548aa020.exe
2204	31c6a028ab500d3b8c6d53c5827ffdd773146a55306f3196271dce2f548aa020.exe
2948	u1p8.0.exe
2948	u1p8.0.exe
2172	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	u1p8.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u1p8.0.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1756	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2948	u1p8.0.exe
2948	u1p8.0.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 2948	2204	31c6a028ab500d3b8c6d53c5827ffdd773146a55306f3196271dce2f548aa020.exe	28
PID 2204 wrote to memory of 2948	2204	31c6a028ab500d3b8c6d53c5827ffdd773146a55306f3196271dce2f548aa020.exe	28
PID 2204 wrote to memory of 2948	2204	31c6a028ab500d3b8c6d53c5827ffdd773146a55306f3196271dce2f548aa020.exe	28
PID 2204 wrote to memory of 2948	2204	31c6a028ab500d3b8c6d53c5827ffdd773146a55306f3196271dce2f548aa020.exe	28
PID 2948 wrote to memory of 2172	2948	u1p8.0.exe	30
PID 2948 wrote to memory of 2172	2948	u1p8.0.exe	30
PID 2948 wrote to memory of 2172	2948	u1p8.0.exe	30
PID 2948 wrote to memory of 2172	2948	u1p8.0.exe	30
PID 2172 wrote to memory of 2168	2172	cmd.exe	32
PID 2172 wrote to memory of 2168	2172	cmd.exe	32
PID 2172 wrote to memory of 2168	2172	cmd.exe	32
PID 2172 wrote to memory of 2168	2172	cmd.exe	32
PID 2168 wrote to memory of 1572	2168	ECAFHIIJJE.exe	33
PID 2168 wrote to memory of 1572	2168	ECAFHIIJJE.exe	33
PID 2168 wrote to memory of 1572	2168	ECAFHIIJJE.exe	33
PID 2168 wrote to memory of 1572	2168	ECAFHIIJJE.exe	33
PID 1572 wrote to memory of 1756	1572	cmd.exe	35
PID 1572 wrote to memory of 1756	1572	cmd.exe	35
PID 1572 wrote to memory of 1756	1572	cmd.exe	35
PID 1572 wrote to memory of 1756	1572	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\31c6a028ab500d3b8c6d53c5827ffdd773146a55306f3196271dce2f548aa020.exe
"C:\Users\Admin\AppData\Local\Temp\31c6a028ab500d3b8c6d53c5827ffdd773146a55306f3196271dce2f548aa020.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2204
- C:\Users\Admin\AppData\Local\Temp\u1p8.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u1p8.0.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2948
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\ECAFHIIJJE.exe"
    3⤵
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:2172
  - - C:\Users\Admin\AppData\Local\Temp\ECAFHIIJJE.exe
      "C:\Users\Admin\AppData\Local\Temp\ECAFHIIJJE.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:2168
    - - 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\ECAFHIIJJE.exe
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1572
      - C:\Windows\SysWOW64\PING.EXE
        
        ping 2.2.2.2 -n 1 -w 3000
        6⤵
        Runs ping.exe
        
        PID:1756

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\ECAFHIIJJE.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
\Users\Admin\AppData\Local\Temp\u1p8.0.exe

Filesize
274KB

MD5
8abce8416e6adba145ada613707bccc8

SHA1
4cdf6d82cefe06a2d038613434309c4a62b3cad0

SHA256
071417bea363ce2ae55a2cc5aa2f04363f869c4c31f75c0e8938f9b8af1547d3

SHA512
adc18266a8d6416531e6a855cd620e6cb254c46b99453b83c5b4c0b6f62f3d160e0d88475b875b90156ce77825408912ce5884e6732720c757c2b80059b6d261

Download Submit
memory/2168-102-0x00000000739A0000-0x000000007408E000-memory.dmp

Filesize
6.9MB

Download
memory/2168-100-0x0000000004D10000-0x0000000004D50000-memory.dmp

Filesize
256KB

Download
memory/2168-98-0x00000000739A0000-0x000000007408E000-memory.dmp

Filesize
6.9MB

Download
memory/2168-97-0x0000000000CC0000-0x0000000000CE0000-memory.dmp

Filesize
128KB

Download
memory/2204-82-0x0000000000400000-0x0000000000B10000-memory.dmp

Filesize
7.1MB

Download
memory/2204-99-0x0000000000C80000-0x0000000000D80000-memory.dmp

Filesize
1024KB

Download
memory/2204-1-0x0000000000C80000-0x0000000000D80000-memory.dmp

Filesize
1024KB

Download
memory/2204-105-0x0000000000C80000-0x0000000000D80000-memory.dmp

Filesize
1024KB

Download
memory/2204-104-0x0000000000400000-0x0000000000B10000-memory.dmp

Filesize
7.1MB

Download
memory/2204-2-0x0000000000230000-0x000000000029E000-memory.dmp

Filesize
440KB

Download
memory/2204-3-0x0000000000400000-0x0000000000B10000-memory.dmp

Filesize
7.1MB

Download
memory/2948-92-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2948-20-0x00000000007B0000-0x00000000008B0000-memory.dmp

Filesize
1024KB

Download
memory/2948-21-0x0000000000220000-0x0000000000247000-memory.dmp

Filesize
156KB

Download
memory/2948-22-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2948-93-0x00000000007B0000-0x00000000008B0000-memory.dmp

Filesize
1024KB

Download
memory/2948-23-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2948-88-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download

Analysis

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