guloader | 859571a129deed67ebc60c7e2e5d48b1e1282121e11d1d696e9cac88fa7c3643

Resubmissions

24-10-2024 15:47

241024-s77adswhlp 10

24-10-2024 15:44

241024-s6mvcs1flg 10

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
24-10-2024 15:47

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Device/HarddiskVolume4/Users/belia.peso.IBEROSTARHV.000/AppData/Local/Temp/Rar$EXa7092.35635/factura 563423.exe
Size

901KB
MD5

6cb35cad38c80bbb552c99caf75f9371
SHA1

f1dcc7d9805738aaf1f30b32383674ea30706269
SHA256

057e7554f7a499adfd2c0a3485675fef4f602b23e2e0a1fd4e07da5b993e4ebf
SHA512

638594b7228a8e747c34f1ab7916774feaff1ce58e875e64bb28cc6742472a305c5aa06e709ec708aad990d9e78ce828509af8a575b3fe62082699de1bb81734
SSDEEP

12288:TSlZI9dcNnPmsS7wkJW7DQFeh2FCCMntz6I8128TsXULDh+gDBf6j4Ydcv+l:2lTnpc/J2d2UVf+DLD1BbYGW

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

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

Loads dropped DLL 2 IoCs

pid	Process
4600	factura 563423.exe
4600	factura 563423.exe

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

Web Service

T1102

flow	ioc
50	drive.google.com
51	drive.google.com

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\oecus\svante.Eft	factura 563423.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1140	factura 563423.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4600	factura 563423.exe
1140	factura 563423.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4600 set thread context of 1140	4600	factura 563423.exe	101

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\sankthansaftnerne\clodpoll.saf	factura 563423.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
3616	1140	WerFault.exe	101

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	factura 563423.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	factura 563423.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1140	factura 563423.exe
1140	factura 563423.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4600	factura 563423.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4600 wrote to memory of 1140	4600	factura 563423.exe	101
PID 4600 wrote to memory of 1140	4600	factura 563423.exe	101
PID 4600 wrote to memory of 1140	4600	factura 563423.exe	101
PID 4600 wrote to memory of 1140	4600	factura 563423.exe	101
PID 4600 wrote to memory of 1140	4600	factura 563423.exe	101

C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume4\Users\belia.peso.IBEROSTARHV.000\AppData\Local\Temp\Rar$EXa7092.35635\factura 563423.exe
"C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume4\Users\belia.peso.IBEROSTARHV.000\AppData\Local\Temp\Rar$EXa7092.35635\factura 563423.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4600
- C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume4\Users\belia.peso.IBEROSTARHV.000\AppData\Local\Temp\Rar$EXa7092.35635\factura 563423.exe
  "C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume4\Users\belia.peso.IBEROSTARHV.000\AppData\Local\Temp\Rar$EXa7092.35635\factura 563423.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:1140
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1140 -s 1780
    3⤵
    - Program crash
    PID:3616

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1140 -ip 1140
1⤵
PID:2800

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\nsqC8BF.tmp\System.dll

Filesize
11KB

MD5
cf85183b87314359488b850f9e97a698

SHA1
6b6c790037eec7ebea4d05590359cb4473f19aea

SHA256
3b6a5cb2a3c091814fce297c04fb677f72732fb21615102c62a195fdc2e7dfac

SHA512
fe484b3fc89aeed3a6b71b90b90ea11a787697e56be3077154b6ddc2646850f6c38589ed422ff792e391638a80a778d33f22e891e76b5d65896c6fb4696a2c3b

Download Submit
memory/1140-24668-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1140-24666-0x0000000000401000-0x0000000000404000-memory.dmp

Filesize
12KB

Download
memory/1140-24673-0x0000000000401000-0x0000000000404000-memory.dmp

Filesize
12KB

Download
memory/1140-24672-0x0000000001660000-0x0000000002ECB000-memory.dmp

Filesize
24.4MB

Download
memory/1140-24648-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1140-24649-0x0000000001660000-0x0000000002ECB000-memory.dmp

Filesize
24.4MB

Download
memory/1140-24650-0x0000000077DC8000-0x0000000077DC9000-memory.dmp

Filesize
4KB

Download
memory/1140-24651-0x0000000077DE5000-0x0000000077DE6000-memory.dmp

Filesize
4KB

Download
memory/1140-24664-0x0000000001660000-0x0000000002ECB000-memory.dmp

Filesize
24.4MB

Download
memory/1140-24671-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1140-24665-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1140-24667-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1140-24669-0x0000000077D41000-0x0000000077E61000-memory.dmp

Filesize
1.1MB

Download
memory/1140-24670-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/4600-24644-0x0000000003300000-0x0000000004B6B000-memory.dmp

Filesize
24.4MB

Download
memory/4600-24645-0x0000000077D41000-0x0000000077E61000-memory.dmp

Filesize
1.1MB

Download
memory/4600-24647-0x0000000003300000-0x0000000004B6B000-memory.dmp

Filesize
24.4MB

Download
memory/4600-24646-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download