guloader | 82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c

General

Target

82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe
Size

705KB
MD5

54025d91662e8fa2169596cd35431cda
SHA1

40e1c2fbc4ef47373dfd69a8853c18e5095d4cf1
SHA256

82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c
SHA512

edc43b538a0cc040d7ee53b360acbd424f3b03e3622b9b00b6975ce7543b4e2f2b7661452c444afb3ba45be9fa7fb70a624450ea862806d4234d53ec481f0bc7
SSDEEP

12288:fTkuHDduR2Bqj82jeCCixMncA+XPiHmcrsQKnsk2axTsZ:fTRogAfCBiSnc7XPiGc1qxTsZ

Score

10^/10

guloader vipkeylogger discovery downloader keylogger stealer

Malware Config

Extracted

Family

vipkeylogger

C2

https://api.telegram.org/bot7511877228:AAEfdtsXiYLhmN4YbL4GOCHPaqlvykB-alc/sendMessage?chat_id=7534008929

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
2204	82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.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 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
14	checkip.dyndns.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2764	82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2204	82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe
2764	82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2204 set thread context of 2764	2204	82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe	31

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Kernelder\nyxis.ini	82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.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	82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2764	82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2204	82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2764	82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 2764	2204	82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe	31
PID 2204 wrote to memory of 2764	2204	82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe	31
PID 2204 wrote to memory of 2764	2204	82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe	31
PID 2204 wrote to memory of 2764	2204	82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe	31
PID 2204 wrote to memory of 2764	2204	82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe	31
PID 2204 wrote to memory of 2764	2204	82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe	31

C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe
"C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.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:2204
- C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe
  "C:\Users\Admin\AppData\Local\Temp\82736a226e54e0314c4b4e9967ef45eddbfd6bdc4737bb7d0d6f23cf89bde33c.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2764

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

\Users\Admin\AppData\Local\Temp\nsj8FE2.tmp\System.dll

Filesize
11KB

MD5
75ed96254fbf894e42058062b4b4f0d1

SHA1
996503f1383b49021eb3427bc28d13b5bbd11977

SHA256
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

SHA512
58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

Download Submit
memory/2204-10-0x0000000004030000-0x0000000005C7F000-memory.dmp

Filesize
28.3MB

Download
memory/2204-12-0x0000000076DB0000-0x0000000076F59000-memory.dmp

Filesize
1.7MB

Download
memory/2204-11-0x0000000076DB1000-0x0000000076EB2000-memory.dmp

Filesize
1.0MB

Download
memory/2204-13-0x0000000004030000-0x0000000005C7F000-memory.dmp

Filesize
28.3MB

Download
memory/2204-15-0x0000000004030000-0x0000000005C7F000-memory.dmp

Filesize
28.3MB

Download
memory/2764-14-0x0000000076DB0000-0x0000000076F59000-memory.dmp

Filesize
1.7MB

Download
memory/2764-16-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-37-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-38-0x0000000000480000-0x00000000004C8000-memory.dmp

Filesize
288KB

Download

Analysis

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