guloader | 262d6420018c8000d4f95686b9b6862737b7bd46ca94916c0c23d4ae603a8e5f

Analysis

max time kernel
133s
max time network
135s
platform
windows11-21h2_x64
resource
win11-20250217-en
resource tags

arch:x64arch:x86image:win11-20250217-enlocale:en-usos:windows11-21h2-x64system
submitted
19/02/2025, 19:12

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General

Target

Skery.exe
Size

673KB
MD5

23c5b9f638e095f67c6e0c038431f24b
SHA1

6b3366c3ff8aa8576c520adb20f6fdea2393ed7f
SHA256

380487150b51a339c3d8c34526c0109d9b5a904aee3e41abc62c04a63ec18dfb
SHA512

0dea689116a01ac15e11420cdbfc01bf70b010fc175f726e873f2f32356d2521dbaf9369b193ca8439a98f29950e5a51e98598e03af5a8995a561b3523b74d15
SSDEEP

12288:Xa/AcZ6qJ2s1+pBOijz3U1PbGf+883INo89u/r2XdgjPEmADNA0EpphZNG2q:X4Z6SQB5/3U5SWN3INFu/9jsmY0q

Score

10^/10

guloader vipkeylogger collection discovery downloader keylogger spyware stealer

Malware Config

Extracted

Family

vipkeylogger

https://api.telegram.org/bot7888169387:AAFhsoUaeWK9XqbrEJl452LFnH_AAaGbsWI/sendMessage?chat_id=6838630391

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
2332	Skery.exe
2332	Skery.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-1-5-21-3449935180-2903586757-2462874082-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Skery.exe
Key opened	\REGISTRY\USER\S-1-5-21-3449935180-2903586757-2462874082-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Skery.exe
Key opened	\REGISTRY\USER\S-1-5-21-3449935180-2903586757-2462874082-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Skery.exe

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

Web Service

T1102

flow	ioc
1	drive.google.com
2	drive.google.com

Looks up external IP address via web service 3 IoCs

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

flow	ioc
7	checkip.dyndns.org
9	reallyfreegeoip.org
13	reallyfreegeoip.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2280	Skery.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2332	Skery.exe
2280	Skery.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

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

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3449935180-2903586757-2462874082-1000_Classes\Local Settings\MuiCache	MiniSearchHost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2280	Skery.exe
2280	Skery.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2332	Skery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2280	Skery.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1452	MiniSearchHost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2332 wrote to memory of 2280	2332	Skery.exe	77
PID 2332 wrote to memory of 2280	2332	Skery.exe	77
PID 2332 wrote to memory of 2280	2332	Skery.exe	77
PID 2332 wrote to memory of 2280	2332	Skery.exe	77

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3449935180-2903586757-2462874082-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Skery.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3449935180-2903586757-2462874082-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Skery.exe

C:\Users\Admin\AppData\Local\Temp\Skery.exe
"C:\Users\Admin\AppData\Local\Temp\Skery.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2332
- C:\Users\Admin\AppData\Local\Temp\Skery.exe
  "C:\Users\Admin\AppData\Local\Temp\Skery.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:2280

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2228

C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe
"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe" -ServerName:MiniSearchUI.AppXj3y73at8fy1htwztzxs68sxx1v7cksp7.mca
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:1452

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\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\SearchHoverUnifiedTileModelCache.dat

Filesize
23KB

MD5
e52072c0483110c5aa1b304cb0304187

SHA1
2a51ef083fee7aa7c78ed6881c064c0e55203b11

SHA256
2038d0f02d255770ac5216a86f709bd5e7d2dc1b0a6942a86427cc76eee2c685

SHA512
8dee1c67873e338f64de674f4179ca6fd90475510ed2183e3bbff2becc3a625c8b1bb3118122cb6bf767804938cd8f9d41ac2c32101ba64579858d3309ad7959

Download Submit
C:\Users\Admin\AppData\Local\Temp\nspC47A.tmp\System.dll

Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

Download Submit
C:\Users\Admin\Music\timelanges.lnk

Filesize
864B

MD5
bf8f1faebcbb127a950114cbf96e044a

SHA1
22a597e92d5f2c06da6d655325eef15686ee1e43

SHA256
e20d4852d16c7d991eb4cb6f659d141d20e2ac790cfbe01c349394d569104b22

SHA512
f2760efdddaec2915c6d8064a86287055fa5e34ad481fffef3be7878664f0d2292148c3c441db8065643f080ba7964db673d758e67e980526ccdc75b2f0be91c

Download Submit
memory/2280-330-0x00000000385C0000-0x0000000038B66000-memory.dmp

Filesize
5.6MB

Download
memory/2280-326-0x00000000017B0000-0x000000000560F000-memory.dmp

Filesize
62.4MB

Download
memory/2280-310-0x00007FF927A60000-0x00007FF927C69000-memory.dmp

Filesize
2.0MB

Download
memory/2280-325-0x0000000000490000-0x00000000017A7000-memory.dmp

Filesize
19.1MB

Download
memory/2280-327-0x00007FF927A60000-0x00007FF927C69000-memory.dmp

Filesize
2.0MB

Download
memory/2280-328-0x00007FF927A60000-0x00007FF927C69000-memory.dmp

Filesize
2.0MB

Download
memory/2280-329-0x0000000000490000-0x00000000004DA000-memory.dmp

Filesize
296KB

Download
memory/2280-339-0x0000000039980000-0x000000003998A000-memory.dmp

Filesize
40KB

Download
memory/2280-331-0x0000000038510000-0x00000000385AC000-memory.dmp

Filesize
624KB

Download
memory/2280-309-0x00000000017B0000-0x000000000560F000-memory.dmp

Filesize
62.4MB

Download
memory/2280-333-0x00007FF927A60000-0x00007FF927C69000-memory.dmp

Filesize
2.0MB

Download
memory/2280-334-0x00000000390C0000-0x0000000039282000-memory.dmp

Filesize
1.8MB

Download
memory/2280-335-0x0000000038C00000-0x0000000038C50000-memory.dmp

Filesize
320KB

Download
memory/2280-336-0x0000000039310000-0x000000003983C000-memory.dmp

Filesize
5.2MB

Download
memory/2280-338-0x0000000039890000-0x0000000039922000-memory.dmp

Filesize
584KB

Download
memory/2332-308-0x00007FF927A60000-0x00007FF927C69000-memory.dmp

Filesize
2.0MB

Download
memory/2332-307-0x00007FF927A61000-0x00007FF927B8A000-memory.dmp

Filesize
1.2MB

Download