stealc | 9ff6b713c3835fc9cfc1a46946b148564438db8307073e8213a79b152780b7c4

General

Target

9ff6b713c3835fc9cfc1a46946b148564438db8307073e8213a79b152780b7c4.exe
Size

1.5MB
MD5

f1839addce7d93e3336a1ddbdac391b6
SHA1

7640eb390beaf570c0cc95a21beb15bb8dcda0de
SHA256

9ff6b713c3835fc9cfc1a46946b148564438db8307073e8213a79b152780b7c4
SHA512

29637cf351c0b4ac9d3fd7f870962ec6126ec0e4f4a3e2dcbab58d6165f2fedaba78c60b19f1959e8125bafb00781169ca8c55f50cbb0d9ac304df572622a4a8
SSDEEP

24576:1K9MHjif9yvK3gBlsXbvLbLUJ70Uj654koEBETT2TjyAAk:1/jwwvKQl+bH4JbjzzEBETT2T5

Score

10^/10

stealc default discovery spyware stealer

Malware Config

Extracted

Family

stealc

Botnet

default

C2

http://68.183.108.129

Attributes

url_path
/6259fdc16222e061.php

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
2212	kat4815.tmp

Loads dropped DLL 2 IoCs

pid	Process
2212	kat4815.tmp
2212	kat4815.tmp

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4420 set thread context of 2212	4420	9ff6b713c3835fc9cfc1a46946b148564438db8307073e8213a79b152780b7c4.exe	81

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	kat4815.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat4815.tmp

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2212	kat4815.tmp
2212	kat4815.tmp
2212	kat4815.tmp
2212	kat4815.tmp

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4420 wrote to memory of 2212	4420	9ff6b713c3835fc9cfc1a46946b148564438db8307073e8213a79b152780b7c4.exe	81
PID 4420 wrote to memory of 2212	4420	9ff6b713c3835fc9cfc1a46946b148564438db8307073e8213a79b152780b7c4.exe	81
PID 4420 wrote to memory of 2212	4420	9ff6b713c3835fc9cfc1a46946b148564438db8307073e8213a79b152780b7c4.exe	81
PID 4420 wrote to memory of 2212	4420	9ff6b713c3835fc9cfc1a46946b148564438db8307073e8213a79b152780b7c4.exe	81
PID 4420 wrote to memory of 2212	4420	9ff6b713c3835fc9cfc1a46946b148564438db8307073e8213a79b152780b7c4.exe	81
PID 4420 wrote to memory of 2212	4420	9ff6b713c3835fc9cfc1a46946b148564438db8307073e8213a79b152780b7c4.exe	81
PID 4420 wrote to memory of 2212	4420	9ff6b713c3835fc9cfc1a46946b148564438db8307073e8213a79b152780b7c4.exe	81
PID 4420 wrote to memory of 2212	4420	9ff6b713c3835fc9cfc1a46946b148564438db8307073e8213a79b152780b7c4.exe	81

C:\Users\Admin\AppData\Local\Temp\9ff6b713c3835fc9cfc1a46946b148564438db8307073e8213a79b152780b7c4.exe
"C:\Users\Admin\AppData\Local\Temp\9ff6b713c3835fc9cfc1a46946b148564438db8307073e8213a79b152780b7c4.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4420
- C:\Users\Admin\AppData\Local\Temp\kat4815.tmp
  C:\Users\Admin\AppData\Local\Temp\kat4815.tmp
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:2212

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

Replay Monitor

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Downloads

C:\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
C:\Users\Admin\AppData\Local\Temp\kat4815.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/2212-8-0x0000000000400000-0x000000000063C000-memory.dmp

Filesize
2.2MB

Download
memory/2212-10-0x0000000000400000-0x000000000063C000-memory.dmp

Filesize
2.2MB

Download
memory/2212-9-0x0000000000400000-0x000000000063C000-memory.dmp

Filesize
2.2MB

Download
memory/2212-4-0x0000000000400000-0x000000000063C000-memory.dmp

Filesize
2.2MB

Download
memory/2212-12-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2212-84-0x0000000000400000-0x000000000063C000-memory.dmp

Filesize
2.2MB

Download
memory/4420-0-0x00000000021E0000-0x00000000021E1000-memory.dmp

Filesize
4KB

Download
memory/4420-1-0x0000000003FA0000-0x00000000040A4000-memory.dmp

Filesize
1.0MB

Download
memory/4420-11-0x0000000000400000-0x0000000000584000-memory.dmp

Filesize
1.5MB

Download

Analysis

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