buer | 1707ca614484545a2411aa38fd1205812a732aeac5378cb6af7c3bab9d91131f

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
20-05-2024 15:32

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General

Target

1707ca614484545a2411aa38fd1205812a732aeac5378cb6af7c3bab9d91131f.exe
Size

228KB
MD5

9bf08871d45df7b29733ec65f7c8251d
SHA1

d98f3b80c92e46b138475404300f6cdaadb82d9a
SHA256

1707ca614484545a2411aa38fd1205812a732aeac5378cb6af7c3bab9d91131f
SHA512

678343eb9be3996921804826d857c257d59580d47c66c0e05c5a611505ceebe2733bcc82970eb0cea0babcf9e37f362a6fa314728b645dd074e419af1d834aee
SSDEEP

3072:mc9uO6r/Nibu2Bm+AmBQuJ+bTlPY0zJ8V/cSPwVp1g6FBa9Mj7V8AZ40Uda:mnioGVJ+bTlPYwJ8fPO3g6F0o73Z40

Score

10^/10

buer stealc default11 discovery loader spyware stealer

Malware Config

Extracted

Family

stealc

Botnet

default11

http://185.172.128.170

Attributes

url_path
/7043a0c6a68d9c65.php

Signatures

Buer
Buer is a new modular loader first seen in August 2019.
loader buer
Stealc
Stealc is an infostealer written in C++.
stealer stealc
Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
740	1707ca614484545a2411aa38fd1205812a732aeac5378cb6af7c3bab9d91131f.exe
740	1707ca614484545a2411aa38fd1205812a732aeac5378cb6af7c3bab9d91131f.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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2568	740	WerFault.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	1707ca614484545a2411aa38fd1205812a732aeac5378cb6af7c3bab9d91131f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	1707ca614484545a2411aa38fd1205812a732aeac5378cb6af7c3bab9d91131f.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
740	1707ca614484545a2411aa38fd1205812a732aeac5378cb6af7c3bab9d91131f.exe
740	1707ca614484545a2411aa38fd1205812a732aeac5378cb6af7c3bab9d91131f.exe

C:\Users\Admin\AppData\Local\Temp\1707ca614484545a2411aa38fd1205812a732aeac5378cb6af7c3bab9d91131f.exe
"C:\Users\Admin\AppData\Local\Temp\1707ca614484545a2411aa38fd1205812a732aeac5378cb6af7c3bab9d91131f.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:740
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 740 -s 2424
  2⤵
  - Program crash
  PID:2568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 740 -ip 740
1⤵
PID:2624

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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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
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
memory/740-3-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/740-2-0x0000000002260000-0x0000000002287000-memory.dmp

Filesize
156KB

Download
memory/740-1-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/740-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/740-84-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download