guloader | aa6f535bea0a54e52f708d2fd1da2710d7ced13fb1591aaa66d41a216f25ec1a

Resubmissions

28-06-2024 13:06

240628-qce7ba1clf 10

28-06-2024 13:02

240628-p94qhateml 10

Analysis

max time kernel
146s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
28-06-2024 13:02

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General

Target

MT103-0011.06272024.exe
Size

870KB
MD5

95dc64015aa43a27412f7ff0979c5b87
SHA1

bde0ae97f4f98c0dd8a0833702ff073befbec268
SHA256

a7d2ea641dbc8e50000e6b42c9cca200fa25d5e37ddd1857eb489795ab5564ee
SHA512

450a8ba7eb3c3178b5567b692d55518d393af5d971bb22ab13e1c9078c9ea389f1a9e28d391a8882ef8d1b99972ec27af64fa2c7aa8fa79c9c0d2423d0176d10
SSDEEP

12288:XcIjd3nQIQsk3na+QiLPTEYLwdLh5d2tqnXQJgcCp8vGiVIkk84n5QWrV:XcIjUna3iLtwb/2tWXMi2rq7nHB

Score

10^/10

guloader downloader

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
Loads dropped DLL 1 IoCs

Processes:

MT103-0011.06272024.exe

pid process

2492 MT103-0011.06272024.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

MT103-0011.06272024.exeMT103-0011.06272024.exe

pid process

2492 MT103-0011.06272024.exe
904 MT103-0011.06272024.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

MT103-0011.06272024.exe

description pid process target process

PID 2492 set thread context of 904 2492 MT103-0011.06272024.exe MT103-0011.06272024.exe
Drops file in Windows directory 1 IoCs

Processes:

MT103-0011.06272024.exe

description ioc process

File opened for modification C:\Windows\reassigned\sandi.ini MT103-0011.06272024.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

MT103-0011.06272024.exe

pid process

2492 MT103-0011.06272024.exe

pid	process
2492	MT103-0011.06272024.exe

pid	process
2492	MT103-0011.06272024.exe
904	MT103-0011.06272024.exe

description	pid	process	target process
PID 2492 set thread context of 904	2492	MT103-0011.06272024.exe	MT103-0011.06272024.exe

description	ioc	process
File opened for modification	C:\Windows\reassigned\sandi.ini	MT103-0011.06272024.exe

pid	process
2492	MT103-0011.06272024.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

MT103-0011.06272024.exe

description	pid	process	target process
PID 2492 wrote to memory of 904	2492	MT103-0011.06272024.exe	MT103-0011.06272024.exe
PID 2492 wrote to memory of 904	2492	MT103-0011.06272024.exe	MT103-0011.06272024.exe
PID 2492 wrote to memory of 904	2492	MT103-0011.06272024.exe	MT103-0011.06272024.exe
PID 2492 wrote to memory of 904	2492	MT103-0011.06272024.exe	MT103-0011.06272024.exe
PID 2492 wrote to memory of 904	2492	MT103-0011.06272024.exe	MT103-0011.06272024.exe

C:\Users\Admin\AppData\Local\Temp\MT103-0011.06272024.exe
"C:\Users\Admin\AppData\Local\Temp\MT103-0011.06272024.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2492

C:\Users\Admin\AppData\Local\Temp\MT103-0011.06272024.exe
"C:\Users\Admin\AppData\Local\Temp\MT103-0011.06272024.exe"
2⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
PID:904

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nss8128.tmp\System.dll
Filesize
11KB

MD5
55a26d7800446f1373056064c64c3ce8

SHA1
80256857e9a0a9c8897923b717f3435295a76002

SHA256
904fd5481d72f4e03b01a455f848dedd095d0fb17e33608e0d849f5196fb6ff8

SHA512
04b8ab7a85c26f188c0a06f524488d6f2ac2884bf107c860c82e94ae12c3859f825133d78338fd2b594dfc48f7dc9888ae76fee786c6252a5c77c88755128a5b

Download Submit
memory/904-27-0x0000000001700000-0x00000000040A7000-memory.dmp

Filesize
41.7MB

Download
memory/904-28-0x00000000004A0000-0x00000000016F4000-memory.dmp

Filesize
18.3MB

Download
memory/904-31-0x0000000001700000-0x00000000040A7000-memory.dmp

Filesize
41.7MB

Download
memory/2492-24-0x0000000004A00000-0x00000000073A7000-memory.dmp

Filesize
41.7MB

Download
memory/2492-25-0x0000000077861000-0x0000000077981000-memory.dmp

Filesize
1.1MB

Download
memory/2492-26-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/2492-29-0x0000000004A00000-0x00000000073A7000-memory.dmp

Filesize
41.7MB

Download
memory/2492-36-0x0000000004A00000-0x00000000073A7000-memory.dmp

Filesize
41.7MB

Download