stealc | f9e3368715092e6a197adf1ae64d6fbe059252b4fbaf317fab7b3e90281b5d05

General

Target

f9e3368715092e6a197adf1ae64d6fbe059252b4fbaf317fab7b3e90281b5d05.exe
Size

463KB
MD5

9c2b900d014ba5b9dfd0ca6cef201753
SHA1

e5705841f68d9443ba5efb553aa9f87556e403e5
SHA256

f9e3368715092e6a197adf1ae64d6fbe059252b4fbaf317fab7b3e90281b5d05
SHA512

5f92c1cff9312b100feca38c4ad8aa82af351d9ca01c420ed44f154fe8c1e3c9027fcffcf9578748601bc29708e8df0969bd4cdc1732a819fb37006a769b13d4
SSDEEP

12288:4seLUscjnY6sJnCWH4UbmCJbbdKofwk/TsyVhpceSvbCq66imuXd6cWD/pWc0GMX:47U17

Score

10^/10

stealc cuapfss spyware stealer

Malware Config

Extracted

Family

stealc

Botnet

cuapfss

C2

http://23.88.106.134

Attributes

url_path
/6a9f8e2503d99c04.php

Signatures

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

Loads dropped DLL 3 IoCs

pid	Process
4116	f9e3368715092e6a197adf1ae64d6fbe059252b4fbaf317fab7b3e90281b5d05.exe
2040	aspnet_regiis.exe
2040	aspnet_regiis.exe

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4116 set thread context of 2040	4116	f9e3368715092e6a197adf1ae64d6fbe059252b4fbaf317fab7b3e90281b5d05.exe	85

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

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2040	aspnet_regiis.exe
2040	aspnet_regiis.exe
2040	aspnet_regiis.exe
2040	aspnet_regiis.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4116 wrote to memory of 2040	4116	f9e3368715092e6a197adf1ae64d6fbe059252b4fbaf317fab7b3e90281b5d05.exe	85
PID 4116 wrote to memory of 2040	4116	f9e3368715092e6a197adf1ae64d6fbe059252b4fbaf317fab7b3e90281b5d05.exe	85
PID 4116 wrote to memory of 2040	4116	f9e3368715092e6a197adf1ae64d6fbe059252b4fbaf317fab7b3e90281b5d05.exe	85
PID 4116 wrote to memory of 2040	4116	f9e3368715092e6a197adf1ae64d6fbe059252b4fbaf317fab7b3e90281b5d05.exe	85
PID 4116 wrote to memory of 2040	4116	f9e3368715092e6a197adf1ae64d6fbe059252b4fbaf317fab7b3e90281b5d05.exe	85
PID 4116 wrote to memory of 2040	4116	f9e3368715092e6a197adf1ae64d6fbe059252b4fbaf317fab7b3e90281b5d05.exe	85
PID 4116 wrote to memory of 2040	4116	f9e3368715092e6a197adf1ae64d6fbe059252b4fbaf317fab7b3e90281b5d05.exe	85
PID 4116 wrote to memory of 2040	4116	f9e3368715092e6a197adf1ae64d6fbe059252b4fbaf317fab7b3e90281b5d05.exe	85
PID 4116 wrote to memory of 2040	4116	f9e3368715092e6a197adf1ae64d6fbe059252b4fbaf317fab7b3e90281b5d05.exe	85

C:\Users\Admin\AppData\Local\Temp\f9e3368715092e6a197adf1ae64d6fbe059252b4fbaf317fab7b3e90281b5d05.exe
"C:\Users\Admin\AppData\Local\Temp\f9e3368715092e6a197adf1ae64d6fbe059252b4fbaf317fab7b3e90281b5d05.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4116
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe"
  2⤵
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:2040

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

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\Roaming\d3d9.dll

Filesize
266KB

MD5
a16bfdd7c9f753a43f3eaa5522ba9d9d

SHA1
36381482314ab4845531e4875c1fe520b50d1fe4

SHA256
e0b2aa87dafb8977c806c5bfada424e7dae2e41995b8974d72ee455513262ea5

SHA512
fc700ef5a63f3ca9141991f9aea64f1b5958c6895c27b1763791736219c0cdd8d033b9d4d7f9a4d435ab86a14c5ec4a12f69298bd7a9ee6fade9ee98efb1b846

Download Submit
memory/2040-15-0x00000000006B0000-0x00000000008EB000-memory.dmp

Filesize
2.2MB

Download
memory/2040-12-0x00000000006B0000-0x00000000008EB000-memory.dmp

Filesize
2.2MB

Download
memory/2040-10-0x00000000006B0000-0x00000000008EB000-memory.dmp

Filesize
2.2MB

Download
memory/2040-18-0x00000000006B0000-0x00000000008EB000-memory.dmp

Filesize
2.2MB

Download
memory/2040-19-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2040-85-0x00000000006B0000-0x00000000008EB000-memory.dmp

Filesize
2.2MB

Download
memory/4116-0-0x0000000074EAE000-0x0000000074EAF000-memory.dmp

Filesize
4KB

Download
memory/4116-16-0x0000000077941000-0x0000000077A61000-memory.dmp

Filesize
1.1MB

Download
memory/4116-17-0x0000000074EA0000-0x0000000075650000-memory.dmp

Filesize
7.7MB

Download
memory/4116-2-0x0000000001220000-0x0000000001226000-memory.dmp

Filesize
24KB

Download
memory/4116-1-0x00000000008E0000-0x000000000095E000-memory.dmp

Filesize
504KB

Download

Analysis

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