Analysis
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max time kernel
141s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
26-09-2023 06:39
Static task
static1
Behavioral task
behavioral1
Sample
Sunfloww.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
Sunfloww.exe
Resource
win10v2004-20230915-en
General
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Target
Sunfloww.exe
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Size
458KB
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MD5
9336e1b94359080686ac7d96212cd60c
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SHA1
8cccdb6b4fbd9eee8ba4fe398c32da41f160b6f3
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SHA256
0dd0c3082323a331ad2d5d36f5f7f3ac11826772077df7462da3229525d97862
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SHA512
5a3ccf855581e51a188eee350928dbb56293ba345490b188207101f0ddb4162b5ca0eae12d0a65aedb6255be9e989c25d33d25a21a2d238b064892af24563ba1
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SSDEEP
6144:Rk5+kbkZJ0aU7BfOp+1nRReEgNac8E9baVa0+f9g819Ri9WFYop10:Rk5Zki1pPOocCVax919RaW+w2
Malware Config
Extracted
snakekeylogger
Protocol: smtp- Host:
mail.gulfparksuites.com - Port:
587 - Username:
[email protected] - Password:
Dammam2020
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/1184-7-0x0000000000400000-0x0000000000424000-memory.dmp family_snakekeylogger -
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 16 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Sunfloww.exedescription pid process target process PID 1496 set thread context of 1184 1496 Sunfloww.exe RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
RegAsm.exepid process 1184 RegAsm.exe 1184 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegAsm.exedescription pid process Token: SeDebugPrivilege 1184 RegAsm.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
Sunfloww.exedescription pid process target process PID 1496 wrote to memory of 1184 1496 Sunfloww.exe RegAsm.exe PID 1496 wrote to memory of 1184 1496 Sunfloww.exe RegAsm.exe PID 1496 wrote to memory of 1184 1496 Sunfloww.exe RegAsm.exe PID 1496 wrote to memory of 1184 1496 Sunfloww.exe RegAsm.exe PID 1496 wrote to memory of 1184 1496 Sunfloww.exe RegAsm.exe PID 1496 wrote to memory of 1184 1496 Sunfloww.exe RegAsm.exe PID 1496 wrote to memory of 1184 1496 Sunfloww.exe RegAsm.exe PID 1496 wrote to memory of 1184 1496 Sunfloww.exe RegAsm.exe -
outlook_office_path 1 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe -
outlook_win_path 1 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Sunfloww.exe"C:\Users\Admin\AppData\Local\Temp\Sunfloww.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1496 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1184