guloader | 5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383

General

Target

5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe
Size

536KB
MD5

51000c141b602569cf44b0f8bec9ecb8
SHA1

d7b819dbc26b3e66c99d233c5c7fc86492e626dd
SHA256

5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383
SHA512

8b38516298e15002a228424f926552b9abc06fb7fb0da94d78a48fea4c0a861fc5bdbcdf9db733f9644a480b4099d237cd70531b8afa11879562d71dd7ee2283
SSDEEP

6144:9lgvTRHy2nGlwzQ7LA+CB+f6tb9PTPgN++6aCUYvIRN3JGrYJfXvk0OFP2lmBLoE:32EI+CnhxC+JaWSRlXMPL6TEHmd3ZhZ8

Score

10^/10

guloader vipkeylogger discovery downloader keylogger stealer

Malware Config

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
564	5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.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
6	checkip.dyndns.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2944	5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
564	5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe
2944	5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 564 set thread context of 2944	564	5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe	30

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\0409\slnger\barometerstandenes.san	5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.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	5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2944	5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
564	5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2944	5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 564 wrote to memory of 2944	564	5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe	30
PID 564 wrote to memory of 2944	564	5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe	30
PID 564 wrote to memory of 2944	564	5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe	30
PID 564 wrote to memory of 2944	564	5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe	30
PID 564 wrote to memory of 2944	564	5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe	30
PID 564 wrote to memory of 2944	564	5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe	30

C:\Users\Admin\AppData\Local\Temp\5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe
"C:\Users\Admin\AppData\Local\Temp\5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.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:564
- C:\Users\Admin\AppData\Local\Temp\5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe
  "C:\Users\Admin\AppData\Local\Temp\5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2944

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

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nst78E8.tmp\System.dll

Filesize
11KB

MD5
75ed96254fbf894e42058062b4b4f0d1

SHA1
996503f1383b49021eb3427bc28d13b5bbd11977

SHA256
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

SHA512
58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

Download Submit
memory/564-9-0x0000000002C50000-0x0000000005BE3000-memory.dmp

Filesize
47.6MB

Download
memory/564-10-0x0000000002C50000-0x0000000005BE3000-memory.dmp

Filesize
47.6MB

Download
memory/564-11-0x0000000077B31000-0x0000000077C32000-memory.dmp

Filesize
1.0MB

Download
memory/564-12-0x0000000077B30000-0x0000000077CD9000-memory.dmp

Filesize
1.7MB

Download
memory/564-13-0x0000000077B30000-0x0000000077CD9000-memory.dmp

Filesize
1.7MB

Download
memory/564-15-0x0000000002C50000-0x0000000005BE3000-memory.dmp

Filesize
47.6MB

Download
memory/2944-14-0x0000000077B30000-0x0000000077CD9000-memory.dmp

Filesize
1.7MB

Download
memory/2944-16-0x00000000007E0000-0x0000000001842000-memory.dmp

Filesize
16.4MB

Download
memory/2944-18-0x00000000007E0000-0x000000000082A000-memory.dmp

Filesize
296KB

Download

Analysis

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