guloader | f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22

Analysis

max time kernel
140s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
27-06-2024 01:47

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General

Target

f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe
Size

711KB
MD5

3fedebe9336a30dbd4d423938fb706cf
SHA1

06d618d9f53e84dd454a262c7b932d3c841b344c
SHA256

f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22
SHA512

005d33ba5157c24db5315b0e66f550e10ff5c95f1820b979b1093d6042b5dae63820878d48d2efaad8a85864107bc0638015eb611904a370e882c660901e5e5a
SSDEEP

12288:MOLi/MOlrpYMS8SFCKKPLWrEqd9gHUVpXNuh:bLi/3lrpQ8DFEE1U3oh

Score

10^/10

guloader downloader

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
Loads dropped DLL 2 IoCs

Processes:

f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe

pid process

5008 f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe
5008 f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exef9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe

pid process

5008 f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe
1392 f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe

pid	process
5008	f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe
5008	f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe

pid	process
5008	f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe
1392	f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe

description	pid	process	target process
PID 5008 set thread context of 1392	5008	f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe	f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe

Drops file in Program Files directory 1 IoCs

Processes:

f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe

description ioc process

File opened for modification C:\Program Files (x86)\seismograferne.Ben40 f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\seismograferne.Ben40	f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe

Drops file in Windows directory 3 IoCs

Processes:

f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe

description	ioc	process
File opened for modification	C:\Windows\Fonts\Hydroxyanthraquinone.ins	f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe
File opened for modification	C:\Windows\resources\0409\trolddomsvirksomheders\sf.ini	f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe
File opened for modification	C:\Windows\vicegreves\alsinger.ini	f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.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:

f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe

pid process

5008 f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe

pid	process
5008	f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe

description	pid	process	target process
PID 5008 wrote to memory of 1392	5008	f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe	f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe
PID 5008 wrote to memory of 1392	5008	f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe	f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe
PID 5008 wrote to memory of 1392	5008	f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe	f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe
PID 5008 wrote to memory of 1392	5008	f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe	f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe
PID 5008 wrote to memory of 1392	5008	f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe	f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe

C:\Users\Admin\AppData\Local\Temp\f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe
"C:\Users\Admin\AppData\Local\Temp\f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:5008

C:\Users\Admin\AppData\Local\Temp\f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe
"C:\Users\Admin\AppData\Local\Temp\f9ae05072e7d7fef087c638192942eda9f821e12d529e0f3c0c9a45181b23c22.exe"
2⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
PID:1392

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\nsx58C1.tmp\System.dll
Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
memory/1392-14-0x0000000001A90000-0x0000000003B9F000-memory.dmp

Filesize
33.1MB

Download
memory/1392-16-0x0000000000830000-0x0000000001A84000-memory.dmp

Filesize
18.3MB

Download
memory/1392-18-0x0000000001A90000-0x0000000003B9F000-memory.dmp

Filesize
33.1MB

Download
memory/5008-11-0x00000000044B0000-0x00000000065BF000-memory.dmp

Filesize
33.1MB

Download
memory/5008-12-0x0000000077CE1000-0x0000000077E01000-memory.dmp

Filesize
1.1MB

Download
memory/5008-13-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/5008-15-0x00000000044B0000-0x00000000065BF000-memory.dmp

Filesize
33.1MB

Download
memory/5008-23-0x00000000044B0000-0x00000000065BF000-memory.dmp

Filesize
33.1MB

Download