stealc | db8191f04672070a996fec1c22e33a935a507142a44e2810499849f204fa53c9

General

Target

db8191f04672070a996fec1c22e33a935a507142a44e2810499849f204fa53c9.exe
Size

173KB
MD5

883376e243dd3350cfce85a2ff84e0bc
SHA1

4a6268392c2ce729021b17c62b012bb55549f2c7
SHA256

db8191f04672070a996fec1c22e33a935a507142a44e2810499849f204fa53c9
SHA512

8e5cb2f12e19dbfbd26645cd4e77ce3fccb07cb51c94544bb31a6f603587ff56d86f10acd4b3288f14b0a45a75451e95891cba63dd52def325b34a49c7326da4
SSDEEP

3072:0s7OPA6cUpRRyTWbk6psDOiuy8VMr1/gmmDrAKchAo:0siPAREbw6pUuyH4DsKY

Score

10^/10

stealc discovery spyware stealer

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.145

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. 2 IoCs

resource	yara_rule
behavioral2/memory/2944-83-0x0000000000400000-0x0000000000821000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_MFA_Browser_Extension_IDs
behavioral2/memory/2944-89-0x0000000000400000-0x0000000000821000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_MFA_Browser_Extension_IDs

Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 2 IoCs

resource	yara_rule
behavioral2/memory/2944-83-0x0000000000400000-0x0000000000821000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs
behavioral2/memory/2944-89-0x0000000000400000-0x0000000000821000-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
behavioral2/memory/2944-83-0x0000000000400000-0x0000000000821000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral2/memory/2944-89-0x0000000000400000-0x0000000000821000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
2944	db8191f04672070a996fec1c22e33a935a507142a44e2810499849f204fa53c9.exe
2944	db8191f04672070a996fec1c22e33a935a507142a44e2810499849f204fa53c9.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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1488	2944	WerFault.exe	84

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	db8191f04672070a996fec1c22e33a935a507142a44e2810499849f204fa53c9.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	db8191f04672070a996fec1c22e33a935a507142a44e2810499849f204fa53c9.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2944	db8191f04672070a996fec1c22e33a935a507142a44e2810499849f204fa53c9.exe
2944	db8191f04672070a996fec1c22e33a935a507142a44e2810499849f204fa53c9.exe
2944	db8191f04672070a996fec1c22e33a935a507142a44e2810499849f204fa53c9.exe
2944	db8191f04672070a996fec1c22e33a935a507142a44e2810499849f204fa53c9.exe

C:\Users\Admin\AppData\Local\Temp\db8191f04672070a996fec1c22e33a935a507142a44e2810499849f204fa53c9.exe
"C:\Users\Admin\AppData\Local\Temp\db8191f04672070a996fec1c22e33a935a507142a44e2810499849f204fa53c9.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:2944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2944 -s 2000
  2⤵
  - Program crash
  PID:1488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2944 -ip 2944
1⤵
PID:4248

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

1

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\Are.docx

Filesize
11KB

MD5
a33e5b189842c5867f46566bdbf7a095

SHA1
e1c06359f6a76da90d19e8fd95e79c832edb3196

SHA256
5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454

SHA512
f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

Download Submit
C:\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\nss3.dll

Filesize
577KB

MD5
df93c9957ac426c5d51b97e7ffa6ae92

SHA1
09399b83c6b9b97edcb8eed347bc9cdeafacdfe6

SHA256
57c0f369841916d740c5bff0cf7336b4a8dd7983bde08c18414f414d5850af69

SHA512
5210daf604b555919ba31336728ff0a8abbe8004450839f36f03b8a2ddb9658cda99d9717199ebb8b2bbfee17343f0a725e4cf22829d64414059e939fce258ac

Download Submit
memory/2944-1-0x0000000000A70000-0x0000000000B70000-memory.dmp

Filesize
1024KB

Download
memory/2944-2-0x00000000009B0000-0x00000000009E4000-memory.dmp

Filesize
208KB

Download
memory/2944-3-0x0000000000400000-0x0000000000821000-memory.dmp

Filesize
4.1MB

Download
memory/2944-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2944-83-0x0000000000400000-0x0000000000821000-memory.dmp

Filesize
4.1MB

Download
memory/2944-89-0x0000000000400000-0x0000000000821000-memory.dmp

Filesize
4.1MB

Download

Analysis

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