guloader | e91bfe70067328c9a591c2d5af2edd9c35b8266b6478f9b66332080df1de5c8e

Resubmissions

11/10/2022, 21:50

221011-1qah4agacq 10

11/10/2022, 19:59

11/10/2022, 19:33

11/10/2022, 19:30

11/10/2022, 17:12

11/10/2022, 17:06

Analysis

max time kernel
250s
max time network
513s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
11/10/2022, 19:33

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General

Target

quote.exe
Size

310KB
MD5

bd8e7774e8a6ecb128344f67a186de29
SHA1

bb8f6320dbbe179952aefed8ad37678a97385c8c
SHA256

4d98cc89b7f976334ec2df4964679ae40ce2efa5e0ea93e44a88cd832e122daf
SHA512

28663d4fc87dc2c4c529b3ea8a27fc8f2c38bf34600ae1ff594da428fbb140cb2dab31ec219a75ed3814b74f0a7c64d03d48fc5aee451a2faf1dfcb27dba1069
SSDEEP

6144:xB+pqUQLU87hsR0qW6IqiQ928gJzoQRT0uAg67asMexycpMFX59F7MfZUSi2XxKL:xgKL2i0uAxasM2W55D4f+xOVn4uoF

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

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

Loads dropped DLL 1 IoCs

pid	Process
4860	quote.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\0409\Metage\Jansi\Koensfordeling.Kat	quote.exe
File created	C:\Windows\resources\0409\telefoncomputerens\Freespace\Tnkest.lnk	quote.exe
File opened for modification	C:\Windows\resources\0409\Metage\Jansi\Koensfordeling.Kat	quote.exe
File created	C:\Windows\resources\0409\telefoncomputerens\Freespace\Tnkest.lnk	quote.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings	OpenWith.exe

Opens file in notepad (likely ransom note) 3 IoCs

ransomware

pid	Process
1452	NOTEPAD.EXE
3336	NOTEPAD.EXE
2472	NOTEPAD.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2452	OpenWith.exe

Suspicious use of SetWindowsHookEx 17 IoCs

pid	Process
2452	OpenWith.exe
2452	OpenWith.exe
2452	OpenWith.exe
2452	OpenWith.exe
2452	OpenWith.exe
2452	OpenWith.exe
2452	OpenWith.exe
2452	OpenWith.exe
2452	OpenWith.exe
2452	OpenWith.exe
2452	OpenWith.exe
2452	OpenWith.exe
2452	OpenWith.exe
2452	OpenWith.exe
2452	OpenWith.exe
2452	OpenWith.exe
2452	OpenWith.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2452 wrote to memory of 2472	2452	OpenWith.exe	99
PID 2452 wrote to memory of 2472	2452	OpenWith.exe	99

C:\Users\Admin\AppData\Local\Temp\quote.exe
"C:\Users\Admin\AppData\Local\Temp\quote.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
PID:4860

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Roseen.ini
1⤵
- Opens file in notepad (likely ransom note)
PID:1452

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2068

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\dd_vcredistUI50E6.txt
1⤵
- Opens file in notepad (likely ransom note)
PID:3336

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2452
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\3639446144\payload.dat
  2⤵
  - Opens file in notepad (likely ransom note)
  PID:2472

C:\Users\Admin\AppData\Local\Temp\quote.exe
"C:\Users\Admin\AppData\Local\Temp\quote.exe"
1⤵
- Drops file in Windows directory
PID:1104

C:\Program Files\7-Zip\7zG.exe
"C:\Program Files\7-Zip\7zG.exe" x -o"C:\Users\Admin\AppData\Local\Temp\quote\" -spe -an -ai#7zMap25380:90:7zEvent4759
1⤵
PID:3576

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {c82192ee-6cb5-4bc0-9ef0-fb818773790a} -Embedding
1⤵
PID:2232

C:\Users\Admin\AppData\Local\Temp\quote.exe
"C:\Users\Admin\AppData\Local\Temp\quote.exe"
1⤵
PID:3528

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
PID:4064

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
PID:1960

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
PID:2132

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
PID:2728

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
PID:3664

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
PID:1920

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\Airplaned.ini

Filesize
37B

MD5
ac4c36f2c499a9fcc9474b57984ce8cb

SHA1
35568b81bcb7d36e1a78d64159181e7583d2a60b

SHA256
589f39d7746b71a2d3e4943359306eb09339ebd732c0f9e6b26ce479babe6626

SHA512
ef44aca87bb5f40644322baadb2ef76067a9a20b195f15cbee0874175859d676c4b435594d517841036119ff05c660ae0d1d291d45cb8495611b2c113e25ac96

Download Submit
C:\Users\Admin\Airplaned.ini

Filesize
37B

MD5
ac4c36f2c499a9fcc9474b57984ce8cb

SHA1
35568b81bcb7d36e1a78d64159181e7583d2a60b

SHA256
589f39d7746b71a2d3e4943359306eb09339ebd732c0f9e6b26ce479babe6626

SHA512
ef44aca87bb5f40644322baadb2ef76067a9a20b195f15cbee0874175859d676c4b435594d517841036119ff05c660ae0d1d291d45cb8495611b2c113e25ac96

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsg7E20.tmp\System.dll

Filesize
11KB

MD5
0ff2d70cfdc8095ea99ca2dabbec3cd7

SHA1
10c51496d37cecd0e8a503a5a9bb2329d9b38116

SHA256
982c5fb7ada7d8c9bc3e419d1c35da6f05bc5dd845940c179af3a33d00a36a8b

SHA512
cb5fc0b3194f469b833c2c9abf493fcec5251e8609881b7f5e095b9bd09ed468168e95dda0ba415a7d8d6b7f0dee735467c0ed8e52b223eb5359986891ba6e2e

Download Submit
C:\Users\Admin\Videos\Afflictively\Unemotive\Rigeligere\Knuckleball.Vit

Filesize
7KB

MD5
215488615bf9caaaf1ed7bf3f4b27040

SHA1
900c920b8acb5863b0232beeccc8a7410d6d2594

SHA256
9a58b1de4758b9a50e234b4ad43f83084d50a2c88cf72d1137d48f6c08f817ca

SHA512
5045b22ff540c4f484cf47b1c5e400b3e09c163c47f7ad3e3ea4cf1c99681f5ba609abe0a0e444785d2a9cd2c3c094394cffdeb6a83417b0b61f3aa30caaf36f

Download Submit
C:\Users\Admin\Videos\Afflictively\Unemotive\Rigeligere\Microsoft.PowerShell.PSReadline.dll

Filesize
245KB

MD5
a5f553fe2354b86a139c486a8af21420

SHA1
9295c43f4e663f1b71216d005f60d9f6ed569fe9

SHA256
4823dc537f339605a6187329030e9b3c41f9b68d3082a95147110664005e5b89

SHA512
d5feb8f90c785d45e70ffb78b04fa3952de6ec599bc9da3d7201e2bf317a8d85af11450e2a21bf0b1272c66f45f35cbf72f57f0d9a829abb26f537709b8de5e1

Download Submit
C:\Users\Admin\Videos\Afflictively\Unemotive\Rigeligere\System.Runtime.InteropServices.RuntimeInformation.dll

Filesize
30KB

MD5
a2f188229b138cdce957aae022dc7c14

SHA1
3bc3d43edd42ff6ad09dbf769abc3557a233867a

SHA256
923cb219e7b1ac5ff17630cf36d21f6ea2de116625c2801a9ac2788d0e59e7cc

SHA512
401a691c3e6cc8205bb78fe7a2958b9657c3efe0dbeb97f0a8402e7f2927e21da094ef91c96e464b06381cf741ca09aca8902f418df6cf79374f6f4c4104d594

Download Submit
memory/4860-133-0x0000000003260000-0x0000000003361000-memory.dmp

Filesize
1.0MB

Download
memory/4860-134-0x0000000003260000-0x0000000003361000-memory.dmp

Filesize
1.0MB

Download