guloader | 2254889b715d357090efc3da8dfa5ed6407611605825038f9e1a9a3d949ae013

General

Target

Orden.xls
Size

180KB
MD5

6d40106f6254a4709fbc5ee82359a1b2
SHA1

e1df7baf5d39a82ebb0fb0956d554ff4ea96a44a
SHA256

2254889b715d357090efc3da8dfa5ed6407611605825038f9e1a9a3d949ae013
SHA512

3b17c41a6f0769e43db9e2681975aa48421bf70b7c0a19177952a9c1de360b68d330df0e7222404d1af3f6defdd35f65ff7da5f94177f25bba9194c313059d14

Score

10^/10

guloader downloader suricata

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

PJIFONY.exe

pid process

3864 PJIFONY.exe

pid	process
3864	PJIFONY.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1696 EXCEL.EXE

Suspicious use of SetWindowsHookEx 17 IoCs

Processes:

EXCEL.EXEPJIFONY.exe

pid	process
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
3864	PJIFONY.exe
1696	EXCEL.EXE
1696	EXCEL.EXE

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1696 wrote to memory of 3864	1696	EXCEL.EXE	PJIFONY.exe
PID 1696 wrote to memory of 3864	1696	EXCEL.EXE	PJIFONY.exe
PID 1696 wrote to memory of 3864	1696	EXCEL.EXE	PJIFONY.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Orden.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1696

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\PJIFONY.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\PJIFONY.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:3864

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\PJIFONY.exe
MD5
30cd538734fa25507f9d54f58c708e9b

SHA1
0257d5982325239425ced2c6a326c101ba8f366f

SHA256
5fcc58948623192102c69e2d46c7bfa2256eb76e23a9e5b2543990ffa032d0cf

SHA512
dcf80274934192902af520e76eecc40d646a7aad7f543be2e11026ac79e2c4a7d31ccc0402ae391c234e2f7c04156bc053a3dfe74846d492cfb18e168caf46fe

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\PJIFONY.exe
MD5
30cd538734fa25507f9d54f58c708e9b

SHA1
0257d5982325239425ced2c6a326c101ba8f366f

SHA256
5fcc58948623192102c69e2d46c7bfa2256eb76e23a9e5b2543990ffa032d0cf

SHA512
dcf80274934192902af520e76eecc40d646a7aad7f543be2e11026ac79e2c4a7d31ccc0402ae391c234e2f7c04156bc053a3dfe74846d492cfb18e168caf46fe

Download Submit
memory/1696-114-0x00007FF6B47E0000-0x00007FF6B7D96000-memory.dmp

Filesize
53.7MB

Download
memory/1696-115-0x00007FF8C8B00000-0x00007FF8C8B10000-memory.dmp

Filesize
64KB

Download
memory/1696-116-0x00007FF8C8B00000-0x00007FF8C8B10000-memory.dmp

Filesize
64KB

Download
memory/1696-117-0x00007FF8C8B00000-0x00007FF8C8B10000-memory.dmp

Filesize
64KB

Download
memory/1696-118-0x00007FF8C8B00000-0x00007FF8C8B10000-memory.dmp

Filesize
64KB

Download
memory/1696-121-0x00007FF8C8B00000-0x00007FF8C8B10000-memory.dmp

Filesize
64KB

Download
memory/1696-122-0x00007FF8E9540000-0x00007FF8EA62E000-memory.dmp

Filesize
16.9MB

Download
memory/1696-123-0x000001AC170C0000-0x000001AC18FB5000-memory.dmp

Filesize
31.0MB

Download
memory/3864-288-0x0000000000000000-mapping.dmp

Download
memory/3864-293-0x0000000002190000-0x00000000021B9000-memory.dmp

Filesize
164KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads