guloader | 4ce6092bd6813374d5594601c3ab2f4c9c6c53a26ff3f090964ad20eb5ef063c

Analysis

max time kernel
94s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
21/02/2025, 13:25

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General

Target

Sekundviserens.exe
Size

1.1MB
MD5

1db36662aaa8e2c20378a0da8fc4fed7
SHA1

02d3a8f945f251b427171c896090c463ecf8a4f1
SHA256

4ce6092bd6813374d5594601c3ab2f4c9c6c53a26ff3f090964ad20eb5ef063c
SHA512

602f22c7af0081fc99c1deec50c2df66af8230ec364432b17164d3389f48e9f15d711425514e5c524948ae9fb5fee53e072a5deec402bf51b354939d969301e1
SSDEEP

24576:8msJxuULEHaYfeJY0CFsjq5c3SddFDykNTwdQG9ikW:QGl5kSdzDPwZi7

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

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

Loads dropped DLL 1 IoCs

pid	Process
2468	Sekundviserens.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
12	drive.google.com
13	drive.google.com

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2468	Sekundviserens.exe
1076	Sekundviserens.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\etageboligomraader\Afbagte.ini	Sekundviserens.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
636	1076	WerFault.exe	86

System Location Discovery: System Language Discovery 1 TTPs 2 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	Sekundviserens.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Sekundviserens.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2468	Sekundviserens.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2468 wrote to memory of 1076	2468	Sekundviserens.exe	86
PID 2468 wrote to memory of 1076	2468	Sekundviserens.exe	86
PID 2468 wrote to memory of 1076	2468	Sekundviserens.exe	86
PID 2468 wrote to memory of 1076	2468	Sekundviserens.exe	86

C:\Users\Admin\AppData\Local\Temp\Sekundviserens.exe
"C:\Users\Admin\AppData\Local\Temp\Sekundviserens.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2468
- C:\Users\Admin\AppData\Local\Temp\Sekundviserens.exe
  "C:\Users\Admin\AppData\Local\Temp\Sekundviserens.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:1076
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1076 -s 1788
    3⤵
    - Program crash
    PID:636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1076 -ip 1076
1⤵
PID:1668

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nslC93C.tmp\System.dll

Filesize
11KB

MD5
ee260c45e97b62a5e42f17460d406068

SHA1
df35f6300a03c4d3d3bd69752574426296b78695

SHA256
e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27

SHA512
a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

Download Submit
memory/1076-31-0x00000000016E0000-0x0000000006947000-memory.dmp

Filesize
82.4MB

Download
memory/1076-32-0x0000000077198000-0x0000000077199000-memory.dmp

Filesize
4KB

Download
memory/1076-33-0x00000000771B5000-0x00000000771B6000-memory.dmp

Filesize
4KB

Download
memory/1076-48-0x0000000000480000-0x00000000016D4000-memory.dmp

Filesize
18.3MB

Download
memory/1076-49-0x0000000000480000-0x00000000016D4000-memory.dmp

Filesize
18.3MB

Download
memory/1076-52-0x0000000077111000-0x0000000077231000-memory.dmp

Filesize
1.1MB

Download
memory/1076-50-0x00000000016E0000-0x0000000006947000-memory.dmp

Filesize
82.4MB

Download
memory/2468-28-0x0000000077111000-0x0000000077231000-memory.dmp

Filesize
1.1MB

Download
memory/2468-30-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/2468-29-0x0000000077111000-0x0000000077231000-memory.dmp

Filesize
1.1MB

Download