guloader | 76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9

General

Target

76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9.exe
Size

1.0MB
MD5

0cabe66c0ed542e70a70b64927fec71f
SHA1

1fafdf96adb43e3c34463c80eb9d85f80af0b379
SHA256

76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9
SHA512

cfa24572c06e5575c22edfccb0c4d0c926e170b651082d513d504cc3b882163df7ec16f7f347265e915decf43b91ecdb31628d612f39134cc7d59ec083647f41
SSDEEP

24576:LzOEC045+XIG9UFPXbQEEDbrQzNG5Hgapm:eEeQ4nfbQEEf3NgX

Score

10^/10

guloader defense_evasion discovery downloader evasion spyware stealer trojan

Malware Config

Signatures

Guloader family
guloader
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Modifies Windows Defender DisableAntiSpyware settings 3 TTPs 1 IoCs

evasion trojan

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\DisableAntiSpyware = "1"	76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9.exe

Disables Task Manager via registry modification
defense_evasion

Loads dropped DLL 2 IoCs

pid	Process
2324	76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9.exe
2324	76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9.exe

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

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
26	reallyfreegeoip.org
27	reallyfreegeoip.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
320	76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2324	76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9.exe
320	76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9.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	76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2324	76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	320	76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2324 wrote to memory of 320	2324	76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9.exe	31
PID 2324 wrote to memory of 320	2324	76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9.exe	31
PID 2324 wrote to memory of 320	2324	76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9.exe	31
PID 2324 wrote to memory of 320	2324	76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9.exe	31
PID 2324 wrote to memory of 320	2324	76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9.exe	31

C:\Users\Admin\AppData\Local\Temp\76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9.exe
"C:\Users\Admin\AppData\Local\Temp\76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2324
- C:\Users\Admin\AppData\Local\Temp\76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9.exe
  "C:\Users\Admin\AppData\Local\Temp\76ea8da0b1641a77ef92d4a73aaa44d9c5d0abe392b546148f61af0e895a0ba9.exe"
  2⤵
  - Modifies Windows Defender DisableAntiSpyware settings
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:320

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nsyE013.tmp\System.dll

Filesize
11KB

MD5
3f176d1ee13b0d7d6bd92e1c7a0b9bae

SHA1
fe582246792774c2c9dd15639ffa0aca90d6fd0b

SHA256
fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e

SHA512
0a69124819b7568d0dea4e9e85ce8fe61c7ba697c934e3a95e2dcfb9f252b1d9da7faf8774b6e8efd614885507acc94987733eba09a2f5e7098b774dfc8524b6

Download Submit
memory/320-19-0x0000000001530000-0x0000000005052000-memory.dmp

Filesize
59.1MB

Download
memory/320-20-0x0000000077BE0000-0x0000000077D89000-memory.dmp

Filesize
1.7MB

Download
memory/320-21-0x00000000004C0000-0x0000000001522000-memory.dmp

Filesize
16.4MB

Download
memory/320-41-0x00000000004C0000-0x0000000001522000-memory.dmp

Filesize
16.4MB

Download
memory/320-42-0x0000000001530000-0x0000000005052000-memory.dmp

Filesize
59.1MB

Download
memory/320-43-0x00000000004C0000-0x00000000004DE000-memory.dmp

Filesize
120KB

Download
memory/2324-18-0x0000000077BE0000-0x0000000077D89000-memory.dmp

Filesize
1.7MB

Download
memory/2324-17-0x0000000077BE1000-0x0000000077CE2000-memory.dmp

Filesize
1.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads