guloader | 53e97123c11bcfbad50aea988cebc5268f16f58f228f3977465d017ad01fa43a

General

Target

Zoogonous.exe
Size

705KB
MD5

756290c288c847bd7bda9b670a207d01
SHA1

c57c35680a475a3a77b6ec1fa5bb2fbdb9cfcae9
SHA256

9597bd14654101c85ee4953e5b9f0217531666497c26f1fdf4e837ce27186733
SHA512

b6d8516918529005cfb0c6e7d1d41e8af3301422e0e95e18da2a51f28a751c233c80810ad8a22106e087c5b09262216d411b757538dc700442ef9cddb87d1d3c
SSDEEP

12288:VrgjBLiIK2WVy/YqpuY7loQAde7MXg1HIbB2ugcYhua4Kw/hXhXmmwMRzcLSIH65:V0jBiIK2R/5puzQ7oQlIbBnyuiwDXjZp

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
1360	Zoogonous.exe
1360	Zoogonous.exe

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

Web Service

T1102

flow	ioc
22	drive.google.com
21	drive.google.com

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
3948	Zoogonous.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1360	Zoogonous.exe
3948	Zoogonous.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1360 set thread context of 3948	1360	Zoogonous.exe	91

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

System Information Discovery
T1082

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

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
3948	Zoogonous.exe
3948	Zoogonous.exe
3948	Zoogonous.exe
3948	Zoogonous.exe
3948	Zoogonous.exe
3948	Zoogonous.exe
3948	Zoogonous.exe
3948	Zoogonous.exe
3948	Zoogonous.exe
3948	Zoogonous.exe
3948	Zoogonous.exe
3948	Zoogonous.exe
3948	Zoogonous.exe
3948	Zoogonous.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1360	Zoogonous.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1360 wrote to memory of 3948	1360	Zoogonous.exe	91
PID 1360 wrote to memory of 3948	1360	Zoogonous.exe	91
PID 1360 wrote to memory of 3948	1360	Zoogonous.exe	91
PID 1360 wrote to memory of 3948	1360	Zoogonous.exe	91
PID 1360 wrote to memory of 3948	1360	Zoogonous.exe	91

C:\Users\Admin\AppData\Local\Temp\Zoogonous.exe
"C:\Users\Admin\AppData\Local\Temp\Zoogonous.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1360
- C:\Users\Admin\AppData\Local\Temp\Zoogonous.exe
  "C:\Users\Admin\AppData\Local\Temp\Zoogonous.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3948

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

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsp8500.tmp\System.dll

Filesize
12KB

MD5
dd87a973e01c5d9f8e0fcc81a0af7c7a

SHA1
c9206ced48d1e5bc648b1d0f54cccc18bf643a14

SHA256
7fb0f8d452fefaac789986b933df050f3d3e4feb8a8d9944ada995f572dcdca1

SHA512
4910b39b1a99622ac8b3c42f173bbe7035ac2f8d40c946468e7db7e2868a2da81ea94da453857f06f39957dd690c7f1ba498936a7aaa0039975e472376f92e8f

Download Submit
memory/1360-14-0x00000000031A0000-0x0000000003EDA000-memory.dmp

Filesize
13.2MB

Download
memory/1360-15-0x0000000077491000-0x00000000775B1000-memory.dmp

Filesize
1.1MB

Download
memory/1360-16-0x0000000074935000-0x0000000074936000-memory.dmp

Filesize
4KB

Download
memory/1360-17-0x00000000031A0000-0x0000000003EDA000-memory.dmp

Filesize
13.2MB

Download
memory/3948-18-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3948-19-0x0000000001660000-0x000000000239A000-memory.dmp

Filesize
13.2MB

Download
memory/3948-20-0x0000000077518000-0x0000000077519000-memory.dmp

Filesize
4KB

Download
memory/3948-21-0x0000000077535000-0x0000000077536000-memory.dmp

Filesize
4KB

Download
memory/3948-22-0x0000000001660000-0x000000000239A000-memory.dmp

Filesize
13.2MB

Download
memory/3948-36-0x0000000077491000-0x00000000775B1000-memory.dmp

Filesize
1.1MB

Download
memory/3948-35-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3948-38-0x0000000000401000-0x0000000000404000-memory.dmp

Filesize
12KB

Download
memory/3948-37-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3948-39-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3948-40-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3948-41-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3948-42-0x0000000000401000-0x0000000000404000-memory.dmp

Filesize
12KB

Download
memory/3948-47-0x0000000000401000-0x0000000000404000-memory.dmp

Filesize
12KB

Download
memory/3948-46-0x0000000001660000-0x000000000239A000-memory.dmp

Filesize
13.2MB

Download
memory/3948-45-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download

Analysis

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