guloader | 6e24c014d9214bbf4f57d547a64e3b0e8655784094673d97f0cb61cf37470ec6

General

Target

Researches.exe
Size

985KB
MD5

c52b880eb8aaeee90ceddecd2b1ff4f8
SHA1

98f0771cfcd46fea300f8b93628e3be97a657401
SHA256

6e24c014d9214bbf4f57d547a64e3b0e8655784094673d97f0cb61cf37470ec6
SHA512

5c9369b339be3d6d1ad168b5c8ab3c8b5ce8092c120c178b2b54bb6a41c78db50b5b3b601a92a6d1274d372f6345c52d0a8c66be601b09c3c0c3cc12e99910dc
SSDEEP

24576:9GF+EgVm1pvmELwhbXcS8BMTwQhBpIrR0/wrSMaA4/5r0:osVm1pvRLwhbMFKThLK0vN0

Score

10^/10

guloader vipkeylogger discovery downloader keylogger stealer

Malware Config

Extracted

Family

vipkeylogger

Credentials

Protocol: smtp
Host:
mail.novacitacor.pt
Port:
587
Username:
[email protected]
Password:
#Novasystem123#
Email To:
[email protected]

C2

https://api.telegram.org/bot7502066508:AAGz5-yl79jZ7Tfefk024IrMFNLc6CGJF4I/sendMessage?chat_id=6978326966

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
1988	Researches.exe
1988	Researches.exe

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

Web Service

T1102

flow	ioc
4	drive.google.com
5	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
14	checkip.dyndns.org
16	reallyfreegeoip.org
17	reallyfreegeoip.org

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\revyviserne\Tilbed.ini	Researches.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1496	Researches.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1988	Researches.exe
1496	Researches.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\delarbejderne.nar	Researches.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\fremmder\ifaldne.lev	Researches.exe

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

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1496	Researches.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1988	Researches.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1496	Researches.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1988 wrote to memory of 1496	1988	Researches.exe	28
PID 1988 wrote to memory of 1496	1988	Researches.exe	28
PID 1988 wrote to memory of 1496	1988	Researches.exe	28
PID 1988 wrote to memory of 1496	1988	Researches.exe	28
PID 1988 wrote to memory of 1496	1988	Researches.exe	28

C:\Users\Admin\AppData\Local\Temp\Researches.exe
"C:\Users\Admin\AppData\Local\Temp\Researches.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Users\Admin\AppData\Local\Temp\Researches.exe
  "C:\Users\Admin\AppData\Local\Temp\Researches.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1496

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\Microsoft\Windows\Templates\dinosaurusserne.lnk

Filesize
1KB

MD5
d82b51036c97ab354ebcc9d4e6e81b69

SHA1
861a983a50ad479fa8443e2abafcc34a866ae9ea

SHA256
e336a075bbe9c3dc1649a24026a18b817953dd5e2f5b47868a00cd8e38de35fe

SHA512
2a072b4ca231a2868568df036475035542a199ffce2b26b1cb9dc0064642c7e456eb116353ab44dbcb7bdeb22590ed33a52012e9b985c5dbef65233dc1c34e27

Download Submit
\Users\Admin\AppData\Local\Temp\nsy9262.tmp\System.dll

Filesize
11KB

MD5
b853d5d2361ade731e33e882707efc34

SHA1
c58b1aeabdf1cbb8334ef8797e7aceaa7a1cb6be

SHA256
f0cd96e0b6e40f92ad1aa0efacde833bae807b92fca19bf062c1cf8acf29484b

SHA512
8ea31d82ffa6f58dab5632fe72690d3a6db0be65aec85fc8a1f71626773c0974dcebefae17bcf67c4c56ef442545e985eea0b348ff6e4fc36740640092b08d69

Download Submit
memory/1496-318-0x0000000077440000-0x00000000775E9000-memory.dmp

Filesize
1.7MB

Download
memory/1496-338-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/1496-339-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/1496-340-0x00000000014F0000-0x0000000002A78000-memory.dmp

Filesize
21.5MB

Download
memory/1496-341-0x0000000000480000-0x00000000004C4000-memory.dmp

Filesize
272KB

Download
memory/1988-312-0x00000000036B0000-0x0000000004C38000-memory.dmp

Filesize
21.5MB

Download
memory/1988-314-0x0000000077440000-0x00000000775E9000-memory.dmp

Filesize
1.7MB

Download
memory/1988-313-0x0000000077441000-0x0000000077542000-memory.dmp

Filesize
1.0MB

Download
memory/1988-316-0x00000000036B0000-0x0000000004C38000-memory.dmp

Filesize
21.5MB

Download
memory/1988-317-0x00000000036B0000-0x0000000004C38000-memory.dmp

Filesize
21.5MB

Download

Analysis

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