vipkeylogger | 919036bc72056762803c599929ee33811f1c9a13f55c571008b57b20b638c54b

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-12-2024 09:17

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General

Target

kelscrit.exe
Size

563KB
MD5

64ea70b77e9654021dfe4c5b42a788db
SHA1

ff668253991db29fa83a93a962654a2a13cc87ba
SHA256

919036bc72056762803c599929ee33811f1c9a13f55c571008b57b20b638c54b
SHA512

7ebdbe6ff9e14ec408f52611962af70f24136ee6976a4239f636971d778d9d3491188ccb18c5908f0c69bace9c115dc909a199bec9c74b44ada381c4f8a4429b
SSDEEP

12288:7fYfUlNHYh6qFkbpBOO64kfPZxIgL3lweEbH+aB:7fYMPYc/FHkfhxIgZQH9B

Score

10^/10

vipkeylogger collection discovery keylogger spyware stealer

Malware Config

Extracted

Family

vipkeylogger

https://api.telegram.org/bot6358867316:AAGYz8F7DpACV8KuAbFAee27mS5P18ckXUM/sendMessage?chat_id=6361450335

Signatures

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
2808	kelscrit.exe
2808	kelscrit.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	kelscrit.exe
Key opened	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kelscrit.exe
Key opened	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kelscrit.exe

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

Web Service

T1102

flow	ioc
20	drive.google.com
21	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
32	checkip.dyndns.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1788	kelscrit.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2808	kelscrit.exe
1788	kelscrit.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2808 set thread context of 1788	2808	kelscrit.exe	91

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1788	kelscrit.exe
1788	kelscrit.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2808	kelscrit.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1788	kelscrit.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2808 wrote to memory of 1788	2808	kelscrit.exe	91
PID 2808 wrote to memory of 1788	2808	kelscrit.exe	91
PID 2808 wrote to memory of 1788	2808	kelscrit.exe	91
PID 2808 wrote to memory of 1788	2808	kelscrit.exe	91
PID 2808 wrote to memory of 1788	2808	kelscrit.exe	91

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	kelscrit.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	kelscrit.exe

C:\Users\Admin\AppData\Local\Temp\kelscrit.exe
"C:\Users\Admin\AppData\Local\Temp\kelscrit.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:2808
- C:\Users\Admin\AppData\Local\Temp\kelscrit.exe
  "C:\Users\Admin\AppData\Local\Temp\kelscrit.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:1788

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\nse77C1.tmp\System.dll

Filesize
12KB

MD5
192639861e3dc2dc5c08bb8f8c7260d5

SHA1
58d30e460609e22fa0098bc27d928b689ef9af78

SHA256
23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6

SHA512
6e573d8b2ef6ed719e271fd0b2fd9cd451f61fc9a9459330108d6d7a65a0f64016303318cad787aa1d5334ba670d8f1c7c13074e1be550b4a316963ecc465cdc

Download Submit
memory/1788-32-0x00000000004A0000-0x00000000004EA000-memory.dmp

Filesize
296KB

Download
memory/1788-15-0x0000000077285000-0x0000000077286000-memory.dmp

Filesize
4KB

Download
memory/1788-33-0x0000000039D20000-0x000000003A2C4000-memory.dmp

Filesize
5.6MB

Download
memory/1788-35-0x00000000720D0000-0x0000000072880000-memory.dmp

Filesize
7.7MB

Download
memory/1788-34-0x000000003A310000-0x000000003A3AC000-memory.dmp

Filesize
624KB

Download
memory/1788-28-0x00000000004A0000-0x00000000016F4000-memory.dmp

Filesize
18.3MB

Download
memory/1788-30-0x00000000771E1000-0x0000000077301000-memory.dmp

Filesize
1.1MB

Download
memory/1788-31-0x00000000720DE000-0x00000000720DF000-memory.dmp

Filesize
4KB

Download
memory/1788-29-0x00000000004A0000-0x00000000016F4000-memory.dmp

Filesize
18.3MB

Download
memory/1788-46-0x0000000037730000-0x000000003773A000-memory.dmp

Filesize
40KB

Download
memory/1788-45-0x0000000037670000-0x0000000037702000-memory.dmp

Filesize
584KB

Download
memory/1788-42-0x00000000720D0000-0x0000000072880000-memory.dmp

Filesize
7.7MB

Download
memory/1788-14-0x0000000077268000-0x0000000077269000-memory.dmp

Filesize
4KB

Download
memory/1788-36-0x00000000771E1000-0x0000000077301000-memory.dmp

Filesize
1.1MB

Download
memory/1788-38-0x000000003A950000-0x000000003AB12000-memory.dmp

Filesize
1.8MB

Download
memory/1788-39-0x000000003AB30000-0x000000003AB80000-memory.dmp

Filesize
320KB

Download
memory/1788-40-0x000000003AC10000-0x000000003B13C000-memory.dmp

Filesize
5.2MB

Download
memory/1788-41-0x00000000720DE000-0x00000000720DF000-memory.dmp

Filesize
4KB

Download
memory/2808-13-0x0000000073E35000-0x0000000073E36000-memory.dmp

Filesize
4KB

Download
memory/2808-12-0x00000000771E1000-0x0000000077301000-memory.dmp

Filesize
1.1MB

Download
memory/2808-11-0x00000000771E1000-0x0000000077301000-memory.dmp

Filesize
1.1MB

Download