guloader | dbaa7c78967b5940aeab47df359e9a365f64e91019e8e45385eb5f248922da88

Analysis

max time kernel
135s
max time network
152s
platform
windows10_x64
resource
win10v20210408
submitted
08-05-2021 21:59

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General

Target

dbaa7c78967b5940aeab47df359e9a365f64e91019e8e45385eb5f248922da88.exe
Size

84KB
MD5

eac11af6b1c0d12ae39ef490e7916067
SHA1

d3ce19add02073a36627919e5c8c82f8d182d6fa
SHA256

dbaa7c78967b5940aeab47df359e9a365f64e91019e8e45385eb5f248922da88
SHA512

03edd7a6e6fad15b9110321a7ece4f782d8f0163e4eb43225d0e63a386d108f7c5f4ad8c5b0decaa7b580498b779fb53a035f9c1b17ae0465ed42cce797d5c74

Score

10^/10

guloader downloader guloader

Malware Config

Extracted

Family

guloader

https://drive.google.com/uc?export=download&id=1hQILvhuKCpLHCDyIe1Ixva67uM_ixN1N

xor.base64

Signatures

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

Guloader Payload 1 IoCs

guloader

Processes:

resource	yara_rule
behavioral2/memory/860-116-0x0000000002090000-0x000000000209A000-memory.dmp	family_guloader

Checks QEMU agent state file 2 TTPs 1 IoCs
Checks state file used by QEMU agent, possibly to detect virtualization.

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

dbaa7c78967b5940aeab47df359e9a365f64e91019e8e45385eb5f248922da88.exe

description ioc process

File opened (read-only) C:\ProgramData\qemu-ga\qga.state dbaa7c78967b5940aeab47df359e9a365f64e91019e8e45385eb5f248922da88.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

dbaa7c78967b5940aeab47df359e9a365f64e91019e8e45385eb5f248922da88.exe

pid process

860 dbaa7c78967b5940aeab47df359e9a365f64e91019e8e45385eb5f248922da88.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

dbaa7c78967b5940aeab47df359e9a365f64e91019e8e45385eb5f248922da88.exe

pid process

860 dbaa7c78967b5940aeab47df359e9a365f64e91019e8e45385eb5f248922da88.exe

description	ioc	process
File opened (read-only)	C:\ProgramData\qemu-ga\qga.state	dbaa7c78967b5940aeab47df359e9a365f64e91019e8e45385eb5f248922da88.exe

pid	process
860	dbaa7c78967b5940aeab47df359e9a365f64e91019e8e45385eb5f248922da88.exe

pid	process
860	dbaa7c78967b5940aeab47df359e9a365f64e91019e8e45385eb5f248922da88.exe

C:\Users\Admin\AppData\Local\Temp\dbaa7c78967b5940aeab47df359e9a365f64e91019e8e45385eb5f248922da88.exe
"C:\Users\Admin\AppData\Local\Temp\dbaa7c78967b5940aeab47df359e9a365f64e91019e8e45385eb5f248922da88.exe"
1⤵
- Checks QEMU agent state file
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetWindowsHookEx
PID:860

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/860-116-0x0000000002090000-0x000000000209A000-memory.dmp

Filesize
40KB

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