guloader | 3176e8a27eef06bb469011e16f2427fd21b7f8f4b8828a358fca253b26592d6e

Analysis

max time kernel
91s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
26-02-2024 08:04

Target

e5a3e5888853128451223d676d3a2549f832ad937789b9019798c6d604b0b4f0_3176e8a27eef06bb469011e16f2427fd21b.exe
Size

108KB
MD5

ee246cfbddcdbb8e70dc6a75c24f8ab3
SHA1

1ea17fe180d0da2d17891df49edb8fa17863fc50
SHA256

3176e8a27eef06bb469011e16f2427fd21b7f8f4b8828a358fca253b26592d6e
SHA512

82ba5fd5fb0db4b9bc3e1790ac0689482e8d351112f1b62ce0d1eaaaec584fc0add6bd81cbc8366be7c0163e6d768b48a7205c0d74ae61f6af94dca53ea21eac
SSDEEP

768:4RdrO/XMUPSZT9THmrTJWqgK+wD2ucVhF0tI8rhr2Ln:KdrtU8TFeWgSucVoGn

Score

10^/10

Family

guloader

https://drive.google.com/uc?export=download&id=1RZ4Ra4EKQNsrr9FzqvvQ9A3RTBlfKVqZ

xor.base64

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

Guloader payload 2 IoCs

guloader

Processes:

resource	yara_rule
behavioral2/memory/1284-2-0x00000000021F0000-0x0000000002200000-memory.dmp	family_guloader
behavioral2/memory/1284-4-0x00000000021F0000-0x0000000002200000-memory.dmp	family_guloader

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

e5a3e5888853128451223d676d3a2549f832ad937789b9019798c6d604b0b4f0_3176e8a27eef06bb469011e16f2427fd21b.exe

pid process

1284 e5a3e5888853128451223d676d3a2549f832ad937789b9019798c6d604b0b4f0_3176e8a27eef06bb469011e16f2427fd21b.exe

pid	process
1284	e5a3e5888853128451223d676d3a2549f832ad937789b9019798c6d604b0b4f0_3176e8a27eef06bb469011e16f2427fd21b.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid	pid_target	process	target process
2252	1284	WerFault.exe	e5a3e5888853128451223d676d3a2549f832ad937789b9019798c6d604b0b4f0_3176e8a27eef06bb469011e16f2427fd21b.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

e5a3e5888853128451223d676d3a2549f832ad937789b9019798c6d604b0b4f0_3176e8a27eef06bb469011e16f2427fd21b.exe

pid process

1284 e5a3e5888853128451223d676d3a2549f832ad937789b9019798c6d604b0b4f0_3176e8a27eef06bb469011e16f2427fd21b.exe

pid	process
1284	e5a3e5888853128451223d676d3a2549f832ad937789b9019798c6d604b0b4f0_3176e8a27eef06bb469011e16f2427fd21b.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

e5a3e5888853128451223d676d3a2549f832ad937789b9019798c6d604b0b4f0_3176e8a27eef06bb469011e16f2427fd21b.exe

description	pid	process	target process
PID 1284 wrote to memory of 3140	1284	e5a3e5888853128451223d676d3a2549f832ad937789b9019798c6d604b0b4f0_3176e8a27eef06bb469011e16f2427fd21b.exe	RegAsm.exe
PID 1284 wrote to memory of 3140	1284	e5a3e5888853128451223d676d3a2549f832ad937789b9019798c6d604b0b4f0_3176e8a27eef06bb469011e16f2427fd21b.exe	RegAsm.exe
PID 1284 wrote to memory of 3140	1284	e5a3e5888853128451223d676d3a2549f832ad937789b9019798c6d604b0b4f0_3176e8a27eef06bb469011e16f2427fd21b.exe	RegAsm.exe

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
"C:\Users\Admin\AppData\Local\Temp\e5a3e5888853128451223d676d3a2549f832ad937789b9019798c6d604b0b4f0_3176e8a27eef06bb469011e16f2427fd21b.exe"
2⤵
PID:3140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1284 -s 792
2⤵
- Program crash
PID:2252

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 1284 -ip 1284
1⤵
PID:5056

memory/1284-2-0x00000000021F0000-0x0000000002200000-memory.dmp

Filesize
64KB

Download
memory/1284-3-0x0000000076FC1000-0x00000000770E1000-memory.dmp

Filesize
1.1MB

Download
memory/1284-4-0x00000000021F0000-0x0000000002200000-memory.dmp

Filesize
64KB

Download