guloader | 2eb79a7bf871a2a679c26d09845996dfeef3af3106d8708a7244bca3000df777

General

Target

rtransferencia_345335.exe
Size

742KB
MD5

c0fb01b572eb0d863f470df8c93cbb5f
SHA1

1f58b684aca32ffc6aa0d2684772bbd72c9aa69c
SHA256

2eb79a7bf871a2a679c26d09845996dfeef3af3106d8708a7244bca3000df777
SHA512

23a8c1283cd5bde134e08850a8663eb772d94ac31ccdd144ee26b4bde5a4a2d575e056dc96c187a2b2a1763bfe63af229c08fa52916b763033c2369b115df48f
SSDEEP

12288:LF9pu9R98DvOx0dy38SeD83S1kAqjxnE8UML789zUO9vVOI0emBmZ:TpCUqxx3lRsJqjxnlGUOdb0emBmZ

Score

10^/10

guloader vipkeylogger collection discovery downloader keylogger spyware stealer

Malware Config

Extracted

Family

vipkeylogger

C2

https://api.telegram.org/bot7860252135:AAFnqHLJ-Ng3O61cPpFaVL17gS5Ru2j08qg/sendMessage?chat_id=744079942

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

Downloads MZ/PE file 1 IoCs

flow	pid	Process
47	4164	Process not Found

Loads dropped DLL 2 IoCs

pid	Process
2172	rtransferencia_345335.exe
2172	rtransferencia_345335.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-1-5-21-3311063739-2594902809-44604183-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rtransferencia_345335.exe
Key opened	\REGISTRY\USER\S-1-5-21-3311063739-2594902809-44604183-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rtransferencia_345335.exe
Key opened	\REGISTRY\USER\S-1-5-21-3311063739-2594902809-44604183-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rtransferencia_345335.exe

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

Web Service

T1102

flow	ioc
22	drive.google.com
23	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
48	checkip.dyndns.org
52	reallyfreegeoip.org
53	reallyfreegeoip.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
224	rtransferencia_345335.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2172	rtransferencia_345335.exe
224	rtransferencia_345335.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Unelaborated.non	rtransferencia_345335.exe
File opened for modification	C:\Program Files (x86)\Common Files\bedvelsens\Reaccelerates.ske	rtransferencia_345335.exe
File opened for modification	C:\Program Files (x86)\Common Files\rhesusbarnet\teenfully.bra	rtransferencia_345335.exe
File opened for modification	C:\Program Files (x86)\Common Files\infarkt.pla	rtransferencia_345335.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\rothesay\Fallenternes.con	rtransferencia_345335.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 3 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	rtransferencia_345335.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rtransferencia_345335.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4980	MicrosoftEdgeUpdate.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
224	rtransferencia_345335.exe
224	rtransferencia_345335.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2172	rtransferencia_345335.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	224	rtransferencia_345335.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 224	2172	rtransferencia_345335.exe	93
PID 2172 wrote to memory of 224	2172	rtransferencia_345335.exe	93
PID 2172 wrote to memory of 224	2172	rtransferencia_345335.exe	93
PID 2172 wrote to memory of 224	2172	rtransferencia_345335.exe	93

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3311063739-2594902809-44604183-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rtransferencia_345335.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3311063739-2594902809-44604183-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rtransferencia_345335.exe

C:\Users\Admin\AppData\Local\Temp\rtransferencia_345335.exe
"C:\Users\Admin\AppData\Local\Temp\rtransferencia_345335.exe"
1⤵
- Loads dropped DLL
- 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:2172
- C:\Users\Admin\AppData\Local\Temp\rtransferencia_345335.exe
  "C:\Users\Admin\AppData\Local\Temp\rtransferencia_345335.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:224

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSI2IiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDU5ODUiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODQ0NDQzNjAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MDU5NzMzNDI2Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:4980

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

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

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\nstA9FC.tmp\System.dll

Filesize
11KB

MD5
cf85183b87314359488b850f9e97a698

SHA1
6b6c790037eec7ebea4d05590359cb4473f19aea

SHA256
3b6a5cb2a3c091814fce297c04fb677f72732fb21615102c62a195fdc2e7dfac

SHA512
fe484b3fc89aeed3a6b71b90b90ea11a787697e56be3077154b6ddc2646850f6c38589ed422ff792e391638a80a778d33f22e891e76b5d65896c6fb4696a2c3b

Download Submit
C:\Users\Public\Pictures\fedtlderstvles.lnk

Filesize
888B

MD5
75988c6ce6556822dc6cb30f59f774b1

SHA1
f6bef6568947fe58c19371ea53c9b6c13bc019c4

SHA256
ddac769c5fd930472e4b47cab8243efe543e684be283d071014293f60f4a4d5b

SHA512
cd3fd3a686156303caaf198aeae455e265b723f13bc8f149f241382d7a444a1a368f8a09c97b63be498c460a4c5c15385c7c3a616db7ea74f96f5e3b835a5f80

Download Submit
memory/224-329-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/224-331-0x00000000016C0000-0x0000000005EAC000-memory.dmp

Filesize
71.9MB

Download
memory/224-343-0x00000000365B0000-0x00000000365BA000-memory.dmp

Filesize
40KB

Download
memory/224-312-0x00000000016C0000-0x0000000005EAC000-memory.dmp

Filesize
71.9MB

Download
memory/224-313-0x00000000774A8000-0x00000000774A9000-memory.dmp

Filesize
4KB

Download
memory/224-314-0x00000000774C5000-0x00000000774C6000-memory.dmp

Filesize
4KB

Download
memory/224-328-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/224-330-0x0000000077421000-0x0000000077541000-memory.dmp

Filesize
1.1MB

Download
memory/224-342-0x00000000364F0000-0x0000000036582000-memory.dmp

Filesize
584KB

Download
memory/224-339-0x0000000039950000-0x0000000039E7C000-memory.dmp

Filesize
5.2MB

Download
memory/224-332-0x0000000000460000-0x00000000004A8000-memory.dmp

Filesize
288KB

Download
memory/224-333-0x0000000038B60000-0x0000000039104000-memory.dmp

Filesize
5.6MB

Download
memory/224-334-0x0000000038990000-0x0000000038A2C000-memory.dmp

Filesize
624KB

Download
memory/224-337-0x0000000039680000-0x0000000039842000-memory.dmp

Filesize
1.8MB

Download
memory/224-338-0x0000000039870000-0x00000000398C0000-memory.dmp

Filesize
320KB

Download
memory/2172-311-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/2172-309-0x0000000077421000-0x0000000077541000-memory.dmp

Filesize
1.1MB

Download
memory/2172-310-0x0000000077421000-0x0000000077541000-memory.dmp

Filesize
1.1MB

Download

Analysis

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