guloader | 081a1704ac4a8de63a1deb76c232fbe383e911ff566d34ee39a76605600182a9

General

Target

Pigroots.exe
Size

544KB
MD5

8ee0889bf7428589385714250950d97d
SHA1

c373041de5f626e6718ea7fad3f143215b34ebc6
SHA256

081a1704ac4a8de63a1deb76c232fbe383e911ff566d34ee39a76605600182a9
SHA512

9f91fad6dbf4cd5555db47ed3400745586be462dd900563dc27e0ada8942caf02ff762df59c44251dc6796dd0f3c7224de1485226125a95150ed7edcbe8e8d3b
SSDEEP

12288:32EIB9TC1qfE+63h27diGoWaCuvQTmd3ZhZt:3wDT8qs+2hCiG5axvGmdPZt

Score

10^/10

guloader vipkeylogger collection discovery downloader keylogger spyware stealer

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
mail.cipmach.com
Port:
587
Username:
[email protected]
Password:
mail@2019$

Extracted

Family

vipkeylogger

Credentials

Protocol: smtp
Host:
mail.cipmach.com
Port:
587
Username:
[email protected]
Password:
mail@2019$
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 1 IoCs

pid	Process
2000	Pigroots.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-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Pigroots.exe
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Pigroots.exe
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Pigroots.exe

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
20	checkip.dyndns.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4068	Pigroots.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2000	Pigroots.exe
4068	Pigroots.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2000 set thread context of 4068	2000	Pigroots.exe	91

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\0409\slnger\barometerstandenes.san	Pigroots.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	Pigroots.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Pigroots.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4068	Pigroots.exe
4068	Pigroots.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2000	Pigroots.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4068	Pigroots.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2000 wrote to memory of 4068	2000	Pigroots.exe	91
PID 2000 wrote to memory of 4068	2000	Pigroots.exe	91
PID 2000 wrote to memory of 4068	2000	Pigroots.exe	91
PID 2000 wrote to memory of 4068	2000	Pigroots.exe	91
PID 2000 wrote to memory of 4068	2000	Pigroots.exe	91

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Pigroots.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Pigroots.exe

C:\Users\Admin\AppData\Local\Temp\Pigroots.exe
"C:\Users\Admin\AppData\Local\Temp\Pigroots.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2000
- C:\Users\Admin\AppData\Local\Temp\Pigroots.exe
  "C:\Users\Admin\AppData\Local\Temp\Pigroots.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:4068

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

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nshBF78.tmp\System.dll

Filesize
11KB

MD5
75ed96254fbf894e42058062b4b4f0d1

SHA1
996503f1383b49021eb3427bc28d13b5bbd11977

SHA256
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

SHA512
58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

Download Submit
memory/2000-8-0x0000000002DF0000-0x000000000602C000-memory.dmp

Filesize
50.2MB

Download
memory/2000-9-0x0000000076FB1000-0x00000000770D1000-memory.dmp

Filesize
1.1MB

Download
memory/2000-10-0x0000000002DF0000-0x000000000602C000-memory.dmp

Filesize
50.2MB

Download
memory/2000-11-0x0000000073CA4000-0x0000000073CA5000-memory.dmp

Filesize
4KB

Download
memory/2000-12-0x0000000002DF0000-0x000000000602C000-memory.dmp

Filesize
50.2MB

Download
memory/4068-13-0x00000000007E0000-0x0000000001A34000-memory.dmp

Filesize
18.3MB

Download
memory/4068-14-0x00000000007E0000-0x0000000001A34000-memory.dmp

Filesize
18.3MB

Download
memory/4068-15-0x00000000007E0000-0x000000000082A000-memory.dmp

Filesize
296KB

Download
memory/4068-16-0x00000000375A0000-0x0000000037B44000-memory.dmp

Filesize
5.6MB

Download
memory/4068-17-0x0000000037450000-0x00000000374EC000-memory.dmp

Filesize
624KB

Download
memory/4068-18-0x00000000382A0000-0x0000000038462000-memory.dmp

Filesize
1.8MB

Download
memory/4068-19-0x0000000038490000-0x00000000384E0000-memory.dmp

Filesize
320KB

Download
memory/4068-21-0x0000000038570000-0x0000000038A9C000-memory.dmp

Filesize
5.2MB

Download
memory/4068-25-0x0000000038AF0000-0x0000000038B82000-memory.dmp

Filesize
584KB

Download
memory/4068-26-0x0000000038BD0000-0x0000000038BDA000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads