guloader | a8bc9efd646596c1285ac7c27ae2e5ddd80ca3ace9cc00a8a238f2eb426b442d

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240730-en
resource tags

arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
submitted
28/07/2024, 21:17

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General

Target

Payment_Slip_2020190002602329.exe
Size

52KB
MD5

6b7ebf98238c64023780fe69743da21d
SHA1

42c3203593d4814c8f14b6b706b7009f226e2eb7
SHA256

35787807345e104b2fc93883c3d54925d876b4c6a03153110acd9cf86f655459
SHA512

16f33b6edf612a3ee3580ecaf5abfd015687c0306323f4428c2dbf8610d3409ef379fa4e749efa7615b14759f8c54ecd7e52760d851c9d1a27c1229ec1a76aea
SSDEEP

768:ZQeVfWGZg7Pz4lihPd2g+8Y1Vb5ENmC1amAgOciaWHKJIp:ZNVrg70if1YTwmC17A/DaWHxp

Score

10^/10

guloader discovery downloader guloader

Malware Config

Extracted

Family

guloader

https://drive.google.com/uc?export=download&id=1N8EyzMe4Ew_jAHmVr_vmlyMkeUvV7TUH

xor.base64

Signatures

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

Guloader payload 2 IoCs

guloader

resource	yara_rule
behavioral2/memory/1476-2-0x0000000002210000-0x0000000002218000-memory.dmp	family_guloader
behavioral2/memory/1476-4-0x0000000002210000-0x0000000002218000-memory.dmp	family_guloader

Checks QEMU agent file 2 TTPs 1 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	Payment_Slip_2020190002602329.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1476	Payment_Slip_2020190002602329.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	Payment_Slip_2020190002602329.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1476	Payment_Slip_2020190002602329.exe

C:\Users\Admin\AppData\Local\Temp\Payment_Slip_2020190002602329.exe
"C:\Users\Admin\AppData\Local\Temp\Payment_Slip_2020190002602329.exe"
1⤵
- Checks QEMU agent file
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:1476

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1476-2-0x0000000002210000-0x0000000002218000-memory.dmp

Filesize
32KB

Download
memory/1476-3-0x0000000076FA1000-0x00000000770C1000-memory.dmp

Filesize
1.1MB

Download
memory/1476-4-0x0000000002210000-0x0000000002218000-memory.dmp

Filesize
32KB

Download