guloader | 94d0aa368cdbd0b4f5aced46f8f1c368e3c64132b3246b6e575b1fc47ae28d34

General

Target

AE09579G0033855AEDXBFFHHHHJ-VC.exe
Size

725KB
MD5

6a8043f977b84ab39909b260cbad90d3
SHA1

a635e93bc25b3c5138bef52ac9f163638f9c015d
SHA256

38321cf0a7c19a1f0a143631332b06bc6dad5b753416b50a7d3328cfa3d14224
SHA512

3f88ad7f79a927ada664daefa6e7413ca3910a5cf9584bd961759e1f1cbc07380f318b1e6d2f70b9332a96eda25e532b046bd75c96ae9843a5297c6ac8e4e6a4
SSDEEP

12288:fJIbMYmn5o9n8yNAj0Vg+r9dCOSHDBfYTMNKH1HzFJs:fJYmg9NAgVxr9dCOSHdt6jO

Score

10^/10

guloader discovery downloader persistence

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
56	4536	Process not Found

Loads dropped DLL 1 IoCs

pid	Process
1220	AE09579G0033855AEDXBFFHHHHJ-VC.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1318997816-2171176372-1451785247-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Appetizer = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Pineapple\\Conventicler.exe"	AE09579G0033855AEDXBFFHHHHJ-VC.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1220	AE09579G0033855AEDXBFFHHHHJ-VC.exe
1136	AE09579G0033855AEDXBFFHHHHJ-VC.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Redwing.ini	AE09579G0033855AEDXBFFHHHHJ-VC.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\unstates.Kap233	AE09579G0033855AEDXBFFHHHHJ-VC.exe

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 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	AE09579G0033855AEDXBFFHHHHJ-VC.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AE09579G0033855AEDXBFFHHHHJ-VC.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
1520	MicrosoftEdgeUpdate.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral2/files/0x0007000000023dc3-25.dat	nsis_installer_1
behavioral2/files/0x0007000000023dc3-25.dat	nsis_installer_2

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1220	AE09579G0033855AEDXBFFHHHHJ-VC.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1220 wrote to memory of 1136	1220	AE09579G0033855AEDXBFFHHHHJ-VC.exe	90
PID 1220 wrote to memory of 1136	1220	AE09579G0033855AEDXBFFHHHHJ-VC.exe	90
PID 1220 wrote to memory of 1136	1220	AE09579G0033855AEDXBFFHHHHJ-VC.exe	90
PID 1220 wrote to memory of 1136	1220	AE09579G0033855AEDXBFFHHHHJ-VC.exe	90

C:\Users\Admin\AppData\Local\Temp\AE09579G0033855AEDXBFFHHHHJ-VC.exe
"C:\Users\Admin\AppData\Local\Temp\AE09579G0033855AEDXBFFHHHHJ-VC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1220
- C:\Users\Admin\AppData\Local\Temp\AE09579G0033855AEDXBFFHHHHJ-VC.exe
  "C:\Users\Admin\AppData\Local\Temp\AE09579G0033855AEDXBFFHHHHJ-VC.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:1136

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSI1IiBpbnN0YWxsZGF0ZXRpbWU9IjE3MzkyODMzNzEiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4Mzc1NDE5Mjc1MzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MzM5MzY3OTI4Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:1520

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

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

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Pineapple\Conventicler.exe

Filesize
725KB

MD5
6a8043f977b84ab39909b260cbad90d3

SHA1
a635e93bc25b3c5138bef52ac9f163638f9c015d

SHA256
38321cf0a7c19a1f0a143631332b06bc6dad5b753416b50a7d3328cfa3d14224

SHA512
3f88ad7f79a927ada664daefa6e7413ca3910a5cf9584bd961759e1f1cbc07380f318b1e6d2f70b9332a96eda25e532b046bd75c96ae9843a5297c6ac8e4e6a4

Download Submit
C:\Users\Admin\AppData\Local\Temp\nssE581.tmp\System.dll

Filesize
11KB

MD5
a436db0c473a087eb61ff5c53c34ba27

SHA1
65ea67e424e75f5065132b539c8b2eda88aa0506

SHA256
75ed40311875312617d6711baed0be29fcaee71031ca27a8d308a72b15a51e49

SHA512
908f46a855480af6eacb2fb64de0e60b1e04bbb10b23992e2cf38a4cbebdcd7d3928c4c022d7ad9f7479265a8f426b93eef580afec95570e654c360d62f5e08d

Download Submit
memory/1136-24-0x00000000016D0000-0x0000000004367000-memory.dmp

Filesize
44.6MB

Download
memory/1136-27-0x0000000000470000-0x00000000016C4000-memory.dmp

Filesize
18.3MB

Download
memory/1136-28-0x00000000016D0000-0x0000000004367000-memory.dmp

Filesize
44.6MB

Download
memory/1220-18-0x0000000005130000-0x0000000007DC7000-memory.dmp

Filesize
44.6MB

Download
memory/1220-19-0x0000000076FE1000-0x0000000077101000-memory.dmp

Filesize
1.1MB

Download
memory/1220-20-0x0000000005130000-0x0000000007DC7000-memory.dmp

Filesize
44.6MB

Download
memory/1220-21-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/1220-23-0x0000000005130000-0x0000000007DC7000-memory.dmp

Filesize
44.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads