guloader | 3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796

General

Target

3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe
Size

292KB
MD5

3cc13beb8db0f13a819c80363ca6e47d
SHA1

b9245332df9c69f4e5ab2ebcc66f074b3fdf7691
SHA256

3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796
SHA512

4c880072e67f23d6945a485026374d8f28ea418a53f88c66483a576fc004690a32e4795eec0a88b828b49e451ab4e0d0a609dbc9a3b653e7f008a218083e4965
SSDEEP

3072:HLCH/jqOlzvzs8EuHlVGwIfNpm5IKj265dEWAFwlSncsJHZ1MCKWNfr:H+HLLZvzs3uHl9IfNpmhb5mFCQcGN

Score

10^/10

guloader downloader persistence

Malware Config

Extracted

Family

guloader

C2

https://drive.google.com/uc?export=download&id=1p1Ic0Tf7mgLLNbaarmQFAC-TnM5CWJ0g

xor.base64

Signatures

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

Checks QEMU agent file 2 TTPs 2 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

Processes:

3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe

description	ioc	process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\FENES = "C:\\Users\\Admin\\AppData\\Local\\Temp\\foreadvic\\NEOTERISMINSI.vbs"	3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe

pid	process
1032	3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe
4876	3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe

description	pid	process	target process
PID 1032 set thread context of 4876	1032	3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe	3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe

pid process

1032 3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe

pid process

1032 3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe

description	pid	process	target process
PID 1032 wrote to memory of 4876	1032	3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe	3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe
PID 1032 wrote to memory of 4876	1032	3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe	3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe
PID 1032 wrote to memory of 4876	1032	3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe	3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe
PID 1032 wrote to memory of 4876	1032	3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe	3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe

C:\Users\Admin\AppData\Local\Temp\3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe
"C:\Users\Admin\AppData\Local\Temp\3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe"
1⤵
- Checks QEMU agent file
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1032
- C:\Users\Admin\AppData\Local\Temp\3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe
  "C:\Users\Admin\AppData\Local\Temp\3766827be1e6b0063c09414c7e6d13912964c26fc346dbc673d6ed6a60f34796.exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:4876

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

Web Service

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

memory/1032-140-0x0000000002290000-0x000000000229B000-memory.dmp

Filesize
44KB

Download
memory/1032-135-0x00007FFF5AC30000-0x00007FFF5AE25000-memory.dmp

Filesize
2.0MB

Download
memory/1032-142-0x0000000077A20000-0x0000000077BC3000-memory.dmp

Filesize
1.6MB

Download
memory/1032-134-0x0000000002290000-0x000000000229B000-memory.dmp

Filesize
44KB

Download
memory/1032-141-0x00007FFF5AC30000-0x00007FFF5AE25000-memory.dmp

Filesize
2.0MB

Download
memory/4876-137-0x0000000000400000-0x000000000055D000-memory.dmp

Filesize
1.4MB

Download
memory/4876-139-0x0000000000401000-0x0000000000506000-memory.dmp

Filesize
1.0MB

Download
memory/4876-143-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/4876-136-0x0000000000000000-mapping.dmp

Download
memory/4876-144-0x00007FFF5AC30000-0x00007FFF5AE25000-memory.dmp

Filesize
2.0MB

Download
memory/4876-145-0x0000000077A20000-0x0000000077BC3000-memory.dmp

Filesize
1.6MB

Download
memory/4876-146-0x0000000077A20000-0x0000000077BC3000-memory.dmp

Filesize
1.6MB

Download
memory/4876-147-0x0000000077A20000-0x0000000077BC3000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads