guloader | 6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97

General

Target

6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe
Size

562KB
MD5

244bb269abd24ced77ddf83aff97f3d4
SHA1

5cb60ac5a72ee67544733b19737db7b053ebccd6
SHA256

6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97
SHA512

ee01c3bbb22a4c1e5955da07f95bd16457b99e295d1e144898afa95f85b24de9f9ec6326abcc3879c898c35108c773e2ee5fa1893122050ea21c86acfc50ef80
SSDEEP

12288:kk2tY1fkPNAFF46piAjeBG+Am3R3W6TRVZdMN:y6k1AgwiA6HRR1ZdM

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

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

Downloads MZ/PE file 1 IoCs

flow	pid	Process
61	1184	Process not Found

Loads dropped DLL 10 IoCs

pid	Process
3124	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe
3124	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe
3124	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe
3124	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe
3124	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe
3124	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe
3124	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe
3124	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe
3124	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe
3124	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
20	drive.google.com
21	drive.google.com
55	drive.google.com

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\equity.Mag	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4184	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3124	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe
4184	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.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
932	4184	WerFault.exe	90

System Location Discovery: System Language Discovery 1 TTPs 3 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	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4140	MicrosoftEdgeUpdate.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4184	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe
4184	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3124	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3124 wrote to memory of 4184	3124	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe	90
PID 3124 wrote to memory of 4184	3124	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe	90
PID 3124 wrote to memory of 4184	3124	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe	90
PID 3124 wrote to memory of 4184	3124	6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe	90

C:\Users\Admin\AppData\Local\Temp\6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe
"C:\Users\Admin\AppData\Local\Temp\6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3124
- C:\Users\Admin\AppData\Local\Temp\6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe
  "C:\Users\Admin\AppData\Local\Temp\6caba6315b19d80df744b6778f2948a1fa213c18f88083682453daa807450e97.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:4184
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4184 -s 1500
    3⤵
    - Program crash
    PID:932

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDQ5MjgiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxNzQzMjM4OTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MTczMzE0NzY1Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:4140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4184 -ip 4184
1⤵
PID:4980

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\nsh98C6.tmp\LangDLL.dll

Filesize
5KB

MD5
f1e9eed02db3a822a7ddef0c724e5f1f

SHA1
65864992f5b6c79c5efbefb5b1354648a8a86709

SHA256
6dff504c6759c418c6635c9b25b8c91d0d9ef7787a3a93610d7670bb563c09df

SHA512
c22b64fff76b25cf53231b8636f07b361d95791c4646787ce7beac27ad6a0de88337dcceb25b5196f97c452dda72e2614647f51a8a18cb4d5228a82ed2e0780c

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsh98C6.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
C:\Users\Admin\secondo\ruddys\Recurses\birgita.txt

Filesize
4KB

MD5
2e7baf4f3c9f5830af25c66ecbe1dac4

SHA1
275ee3d8faeef514ec71605788561bae14f3a48a

SHA256
37346b6387f7d33a9eab62407f94cd716081eb80d7443db91b788479e6fcaf4c

SHA512
a7900cc0e56998f9cd30b24584c15a8a533139cb01d16bf2046c1b1bf5ffbd67216aac69a83d1968206a99185f692bf21429622cbf53a9abbbf528ff21f7cb45

Download Submit
memory/3124-50-0x0000000004A40000-0x0000000006799000-memory.dmp

Filesize
29.3MB

Download
memory/3124-53-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/3124-52-0x0000000077261000-0x0000000077381000-memory.dmp

Filesize
1.1MB

Download
memory/3124-51-0x0000000004A40000-0x0000000006799000-memory.dmp

Filesize
29.3MB

Download
memory/3124-56-0x0000000004A40000-0x0000000006799000-memory.dmp

Filesize
29.3MB

Download
memory/4184-55-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/4184-57-0x0000000001660000-0x00000000033B9000-memory.dmp

Filesize
29.3MB

Download
memory/4184-58-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/4184-59-0x0000000001660000-0x00000000033B9000-memory.dmp

Filesize
29.3MB

Download
memory/4184-60-0x0000000077261000-0x0000000077381000-memory.dmp

Filesize
1.1MB

Download
memory/4184-77-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/4184-78-0x0000000001660000-0x00000000033B9000-memory.dmp

Filesize
29.3MB

Download
memory/4184-79-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/4184-80-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/4184-81-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download

Analysis

Sharing