guloader | ce7202372e7e915e6cf9fb52e1ffe3083602f3a9b761f1d4b9e6045eabe065c1

Analysis

max time kernel
147s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02/12/2024, 13:15

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General

Target

021337ISOGENERAL.exe
Size

431KB
MD5

d69326f0086f5a1915e317d460851185
SHA1

da4889b4a866fccf18cc4d580995d4e491459207
SHA256

ce7202372e7e915e6cf9fb52e1ffe3083602f3a9b761f1d4b9e6045eabe065c1
SHA512

f559b5584bccd64ee5784b3016b113f99f588be71ac19fc4adac850b993240d7596c91d3e85bc50a5290dd76ac3db3df7911d608f3c678ac4188db9c9b4757a5
SSDEEP

12288:bchSe04fsdrsdA6zKY/h1kMPJIN5yUBowyx9fag6vB:bqSe04s+61Y/LkMRSwgoxyrvB

Score

10^/10

guloader vipkeylogger collection discovery downloader keylogger spyware stealer

Malware Config

Extracted

Family

vipkeylogger

https://api.telegram.org/bot6478451606:AAFbKLDgEUUeIzZ7hQq9aJhHVTZpkPUZ2-Y/sendMessage?chat_id=6755467222

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 2 IoCs

pid	Process
5064	021337ISOGENERAL.exe
5064	021337ISOGENERAL.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-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	021337ISOGENERAL.exe
Key opened	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	021337ISOGENERAL.exe
Key opened	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	021337ISOGENERAL.exe

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

Web Service

T1102

flow	ioc
16	drive.google.com
17	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
34	checkip.dyndns.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
212	021337ISOGENERAL.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
5064	021337ISOGENERAL.exe
212	021337ISOGENERAL.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5064 set thread context of 212	5064	021337ISOGENERAL.exe	86

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

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	021337ISOGENERAL.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	021337ISOGENERAL.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
212	021337ISOGENERAL.exe
212	021337ISOGENERAL.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
5064	021337ISOGENERAL.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	212	021337ISOGENERAL.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5064 wrote to memory of 212	5064	021337ISOGENERAL.exe	86
PID 5064 wrote to memory of 212	5064	021337ISOGENERAL.exe	86
PID 5064 wrote to memory of 212	5064	021337ISOGENERAL.exe	86
PID 5064 wrote to memory of 212	5064	021337ISOGENERAL.exe	86
PID 5064 wrote to memory of 212	5064	021337ISOGENERAL.exe	86

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	021337ISOGENERAL.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	021337ISOGENERAL.exe

C:\Users\Admin\AppData\Local\Temp\021337ISOGENERAL.exe
"C:\Users\Admin\AppData\Local\Temp\021337ISOGENERAL.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:5064
- C:\Users\Admin\AppData\Local\Temp\021337ISOGENERAL.exe
  "C:\Users\Admin\AppData\Local\Temp\021337ISOGENERAL.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:212

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\nsuC4E7.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
memory/212-37-0x0000000037790000-0x00000000377E0000-memory.dmp

Filesize
320KB

Download
memory/212-36-0x00000000375C0000-0x0000000037782000-memory.dmp

Filesize
1.8MB

Download
memory/212-42-0x0000000034250000-0x000000003425A000-memory.dmp

Filesize
40KB

Download
memory/212-41-0x0000000034190000-0x0000000034222000-memory.dmp

Filesize
584KB

Download
memory/212-16-0x00000000016C0000-0x0000000003C74000-memory.dmp

Filesize
37.7MB

Download
memory/212-29-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/212-38-0x0000000037870000-0x0000000037D9C000-memory.dmp

Filesize
5.2MB

Download
memory/212-32-0x00000000369B0000-0x0000000036A4C000-memory.dmp

Filesize
624KB

Download
memory/212-30-0x0000000000460000-0x00000000004AA000-memory.dmp

Filesize
296KB

Download
memory/212-34-0x00000000016C0000-0x0000000003C74000-memory.dmp

Filesize
37.7MB

Download
memory/212-31-0x0000000036AA0000-0x0000000037044000-memory.dmp

Filesize
5.6MB

Download
memory/5064-12-0x00000000041B0000-0x0000000006764000-memory.dmp

Filesize
37.7MB

Download
memory/5064-13-0x0000000077771000-0x0000000077891000-memory.dmp

Filesize
1.1MB

Download
memory/5064-15-0x00000000041B0000-0x0000000006764000-memory.dmp

Filesize
37.7MB

Download
memory/5064-14-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download