guloader | a29d58240752e42c0e692a6b6b08e8cf2abb9626b4a83d6ddc4ceed51f4ff667

General

Target

FC4311009.exe
Size

726KB
MD5

e353e90a21ca20f3e7bdc640db4bef64
SHA1

4b953174a91cae3617b8f8bfea1056310951d254
SHA256

a29d58240752e42c0e692a6b6b08e8cf2abb9626b4a83d6ddc4ceed51f4ff667
SHA512

d4d6b104b59b4786a43a4dd1060143ec4bf1f1ea11f8918073555fedb82c27e5428c823d4deda84d08be7a0d77e53898204b182ea4c195dae921457decea5bae
SSDEEP

12288:dT58++c2/p0FdmxxSKAHNaPH+r3cFaql2DiNpHUy6iqezkmRkFD0ygchhZMfob:dT58+86wxx5dfG3cFnN5UB9vmRkFDZhn

Score

10^/10

guloader vipkeylogger collection discovery downloader keylogger spyware stealer

Malware Config

Extracted

Family

vipkeylogger

Credentials

Protocol: smtp
Host:
mail.royalwaweltours.com
Port:
587
Username:
[email protected]
Password:
COLL-ARA0324
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 2 IoCs

pid	Process
1576	FC4311009.exe
1576	FC4311009.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-1-5-21-1121399784-3202166597-3503557106-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	FC4311009.exe
Key opened	\REGISTRY\USER\S-1-5-21-1121399784-3202166597-3503557106-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	FC4311009.exe
Key opened	\REGISTRY\USER\S-1-5-21-1121399784-3202166597-3503557106-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	FC4311009.exe

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

Web Service

T1102

flow	ioc
19	drive.google.com
20	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
32	reallyfreegeoip.org
33	reallyfreegeoip.org
30	checkip.dyndns.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4500	FC4311009.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1576	FC4311009.exe
4500	FC4311009.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	FC4311009.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	FC4311009.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4500	FC4311009.exe
4500	FC4311009.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1576	FC4311009.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4500	FC4311009.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1576 wrote to memory of 4500	1576	FC4311009.exe	89
PID 1576 wrote to memory of 4500	1576	FC4311009.exe	89
PID 1576 wrote to memory of 4500	1576	FC4311009.exe	89
PID 1576 wrote to memory of 4500	1576	FC4311009.exe	89

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1121399784-3202166597-3503557106-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	FC4311009.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1121399784-3202166597-3503557106-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	FC4311009.exe

C:\Users\Admin\AppData\Local\Temp\FC4311009.exe
"C:\Users\Admin\AppData\Local\Temp\FC4311009.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1576
- C:\Users\Admin\AppData\Local\Temp\FC4311009.exe
  "C:\Users\Admin\AppData\Local\Temp\FC4311009.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:4500

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Browser Information Discovery

1

T1217

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsv7A91.tmp\System.dll

Filesize
12KB

MD5
d968cb2b98b83c03a9f02dd9b8df97dc

SHA1
d784c9b7a92dce58a5038beb62a48ff509e166a0

SHA256
a4ec98011ef99e595912718c1a1bf1aa67bfc2192575729d42f559d01f67b95c

SHA512
2ee41dc68f329a1519a8073ece7d746c9f3bf45d8ef3b915deb376af37e26074134af5f83c8af0fe0ab227f0d1acca9f37e5ca7ae37c46c3bcc0331fe5e2b97e

Download Submit
memory/1576-16-0x0000000077CA1000-0x0000000077DC1000-memory.dmp

Filesize
1.1MB

Download
memory/1576-17-0x0000000077CA1000-0x0000000077DC1000-memory.dmp

Filesize
1.1MB

Download
memory/1576-18-0x0000000074985000-0x0000000074986000-memory.dmp

Filesize
4KB

Download
memory/4500-19-0x0000000001830000-0x0000000005A83000-memory.dmp

Filesize
66.3MB

Download
memory/4500-20-0x0000000077D28000-0x0000000077D29000-memory.dmp

Filesize
4KB

Download
memory/4500-21-0x0000000077D45000-0x0000000077D46000-memory.dmp

Filesize
4KB

Download
memory/4500-34-0x00000000005D0000-0x0000000001824000-memory.dmp

Filesize
18.3MB

Download
memory/4500-37-0x0000000077CA1000-0x0000000077DC1000-memory.dmp

Filesize
1.1MB

Download
memory/4500-35-0x00000000005D0000-0x0000000001824000-memory.dmp

Filesize
18.3MB

Download
memory/4500-38-0x0000000072A1E000-0x0000000072A1F000-memory.dmp

Filesize
4KB

Download
memory/4500-36-0x0000000001830000-0x0000000005A83000-memory.dmp

Filesize
66.3MB

Download
memory/4500-39-0x00000000005D0000-0x0000000000618000-memory.dmp

Filesize
288KB

Download
memory/4500-40-0x0000000038A70000-0x0000000039014000-memory.dmp

Filesize
5.6MB

Download
memory/4500-41-0x0000000036550000-0x00000000365EC000-memory.dmp

Filesize
624KB

Download
memory/4500-42-0x0000000072A10000-0x00000000731C0000-memory.dmp

Filesize
7.7MB

Download
memory/4500-43-0x0000000077CA1000-0x0000000077DC1000-memory.dmp

Filesize
1.1MB

Download
memory/4500-44-0x0000000039460000-0x0000000039622000-memory.dmp

Filesize
1.8MB

Download
memory/4500-45-0x0000000039630000-0x0000000039680000-memory.dmp

Filesize
320KB

Download
memory/4500-47-0x0000000072A1E000-0x0000000072A1F000-memory.dmp

Filesize
4KB

Download
memory/4500-48-0x0000000072A10000-0x00000000731C0000-memory.dmp

Filesize
7.7MB

Download
memory/4500-49-0x00000000396A0000-0x0000000039732000-memory.dmp

Filesize
584KB

Download
memory/4500-50-0x0000000039790000-0x000000003979A000-memory.dmp

Filesize
40KB

Download

Analysis

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