guloader | c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb

General

Target

c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe
Size

236KB
MD5

0af9899535e4e01ca5f462698b4daf76
SHA1

b45e55bb808b2d6474948751d6e5222dd1681f25
SHA256

c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb
SHA512

a8083a5daabddb4882beaaf94ce6cc984db46900610161cde796ef7e0341ee1cb7ab59947b06401336a00a64016e5dde8f75f71953a873c7da2ba3a1526ddc59
SSDEEP

6144:NdEW6JwLKqkYUogiOi7iiviii2lALi+i9iiai1iiqiriiBiSiiPiiiifkEM6r:QW

Score

10^/10

guloader downloader

Malware Config

Extracted

Family

guloader

C2

https://drive.google.com/uc?export=download&id=142oHWKDKlfvcA-f2uT-IvYwcaK4snG7A

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:

c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exec92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe

description	ioc	process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exec92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe

pid	process
4800	c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe
2932	c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe

description	pid	process	target process
PID 4800 set thread context of 2932	4800	c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe	c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe

pid process

4800 c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe

pid process

4800 c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe

description	pid	process	target process
PID 4800 wrote to memory of 2932	4800	c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe	c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe
PID 4800 wrote to memory of 2932	4800	c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe	c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe
PID 4800 wrote to memory of 2932	4800	c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe	c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe
PID 4800 wrote to memory of 2932	4800	c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe	c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe

C:\Users\Admin\AppData\Local\Temp\c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe
"C:\Users\Admin\AppData\Local\Temp\c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe"
1⤵
- Checks QEMU agent file
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4800
- C:\Users\Admin\AppData\Local\Temp\c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe
  "C:\Users\Admin\AppData\Local\Temp\c92791b7719c410885432385c668313a7e75d9ce152bab6192ba4d657ef052eb.exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:2932

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

1

T1102

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2932-144-0x0000000076E60000-0x0000000077003000-memory.dmp

Filesize
1.6MB

Download
memory/2932-136-0x0000000000000000-mapping.dmp

Download
memory/2932-137-0x0000000000400000-0x000000000055D000-memory.dmp

Filesize
1.4MB

Download
memory/2932-141-0x0000000000401000-0x0000000000506000-memory.dmp

Filesize
1.0MB

Download
memory/2932-142-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/2932-143-0x00007FFB9E910000-0x00007FFB9EB05000-memory.dmp

Filesize
2.0MB

Download
memory/2932-145-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/2932-146-0x00007FFB9E910000-0x00007FFB9EB05000-memory.dmp

Filesize
2.0MB

Download
memory/2932-147-0x0000000076E60000-0x0000000077003000-memory.dmp

Filesize
1.6MB

Download
memory/4800-135-0x00007FFB9E910000-0x00007FFB9EB05000-memory.dmp

Filesize
2.0MB

Download
memory/4800-140-0x0000000076E60000-0x0000000077003000-memory.dmp

Filesize
1.6MB

Download
memory/4800-139-0x0000000002330000-0x000000000233B000-memory.dmp

Filesize
44KB

Download
memory/4800-134-0x0000000002330000-0x000000000233B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads