guloader | 1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2

Analysis

max time kernel
134s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26-10-2024 01:11

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General

Target

1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe
Size

1007KB
MD5

896d5fba336a53de81119d748c423d0d
SHA1

1fe1eb8613bdd029a3d6fef114d6bbcea8c938b4
SHA256

1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2
SHA512

8c15bdc196b52ca01994bda11c29925a10373d4b402b55271137fe6f7d37057beccb14d4a9ec9445bfe25f6e820592cc36086b4d3e411248d3a151ce5ca17474
SSDEEP

24576:vHg/r/z2VFQhvni26fI0b6e4BAWMIRdGeBYTw2H2:I/z2VAn6ZUnZSTs

Score

10^/10

guloader vipkeylogger collection discovery downloader keylogger spyware stealer

Malware Config

Extracted

Family

vipkeylogger

Credentials

Protocol: smtp
Host:
panta.home.pl
Port:
587
Username:
[email protected]
Password:
PANTA#Gda$2023
Email To:
[email protected]

Signatures

Guloader family
guloader
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
VIPKeylogger
VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.
stealer keylogger vipkeylogger
Vipkeylogger family
vipkeylogger

Loads dropped DLL 1 IoCs

pid	Process
2740	1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe

Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe
Key opened	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe
Key opened	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
27	drive.google.com
28	drive.google.com

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
40	checkip.dyndns.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1972	1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2740	1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe
1972	1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2740 set thread context of 1972	2740	1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe	97

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\thyroprotein.ver	1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
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
4484	1972	WerFault.exe	97

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1972	1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2740	1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1972	1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2740 wrote to memory of 1972	2740	1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe	97
PID 2740 wrote to memory of 1972	2740	1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe	97
PID 2740 wrote to memory of 1972	2740	1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe	97
PID 2740 wrote to memory of 1972	2740	1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe	97
PID 2740 wrote to memory of 1972	2740	1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe	97

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe

C:\Users\Admin\AppData\Local\Temp\1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe
"C:\Users\Admin\AppData\Local\Temp\1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2740
- C:\Users\Admin\AppData\Local\Temp\1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe
  "C:\Users\Admin\AppData\Local\Temp\1e91b915d4132fcd5e923a83c6070af72045261fb5cb972f3b4497a4dc8dfcb2.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1972
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1972 -s 2412
    3⤵
    - Program crash
    PID:4484

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1972 -ip 1972
1⤵
PID:3540

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsp6D23.tmp\System.dll

Filesize
11KB

MD5
fccff8cb7a1067e23fd2e2b63971a8e1

SHA1
30e2a9e137c1223a78a0f7b0bf96a1c361976d91

SHA256
6fcea34c8666b06368379c6c402b5321202c11b00889401c743fb96c516c679e

SHA512
f4335e84e6f8d70e462a22f1c93d2998673a7616c868177cac3e8784a3be1d7d0bb96f2583fa0ed82f4f2b6b8f5d9b33521c279a42e055d80a94b4f3f1791e0c

Download Submit
memory/1972-35-0x0000000037200000-0x00000000377A4000-memory.dmp

Filesize
5.6MB

Download
memory/1972-18-0x0000000001A80000-0x00000000044DF000-memory.dmp

Filesize
42.4MB

Download
memory/1972-40-0x0000000001A80000-0x00000000044DF000-memory.dmp

Filesize
42.4MB

Download
memory/1972-38-0x0000000037F50000-0x0000000037FA0000-memory.dmp

Filesize
320KB

Download
memory/1972-32-0x0000000001A80000-0x00000000044DF000-memory.dmp

Filesize
42.4MB

Download
memory/1972-37-0x0000000037D80000-0x0000000037F42000-memory.dmp

Filesize
1.8MB

Download
memory/1972-36-0x00000000377B0000-0x000000003784C000-memory.dmp

Filesize
624KB

Download
memory/1972-19-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/1972-34-0x0000000000820000-0x000000000086A000-memory.dmp

Filesize
296KB

Download
memory/1972-33-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/2740-13-0x0000000004DC0000-0x000000000781F000-memory.dmp

Filesize
42.4MB

Download
memory/2740-12-0x0000000004DC0000-0x000000000781F000-memory.dmp

Filesize
42.4MB

Download
memory/2740-14-0x0000000077891000-0x00000000779B1000-memory.dmp

Filesize
1.1MB

Download
memory/2740-17-0x0000000004DC0000-0x000000000781F000-memory.dmp

Filesize
42.4MB

Download
memory/2740-15-0x00000000744E4000-0x00000000744E5000-memory.dmp

Filesize
4KB

Download
memory/2740-16-0x00000000744E0000-0x00000000744E6000-memory.dmp

Filesize
24KB

Download