Analysis
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max time kernel
135s -
max time network
162s -
platform
windows10-2004_x64 -
resource
win10v2004-20231020-en -
resource tags
arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system -
submitted
09-11-2023 01:00
Static task
static1
Behavioral task
behavioral1
Sample
CIMB-Transfer_Advice-202310301849809.exe
Resource
win7-20231020-en
Behavioral task
behavioral2
Sample
CIMB-Transfer_Advice-202310301849809.exe
Resource
win10v2004-20231020-en
General
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Target
CIMB-Transfer_Advice-202310301849809.exe
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Size
330KB
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MD5
bf6133744240674055bdd0b7783cea73
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SHA1
790fe9b655289c7379cd100d3401a1d08da199e8
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SHA256
1997d0db749ed1dfc24d90ea0fcf6af634aa34b5bd2b9ad35932493f67e9fdce
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SHA512
44d63713637a85bf165797063c0e2d49ae42af055b733205acf1c5054573959512f5a4e0f6fcdfed880d46251859c575ca445f0a2aa533a6a57e4a02fe1d219d
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SSDEEP
6144:MCKABMNiti0sBlU5gKB1lwPnGPLes5sOUvszaMzyMFsPe35bgaG/QQD:MfA6bhu8noLes5sOUvsziML35bgaGT
Malware Config
Extracted
snakekeylogger
Protocol: smtp- Host:
mail.alualuminium.com.my - Port:
587 - Username:
[email protected] - Password:
U8G4S13#8Zk$ - Email To:
[email protected]
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/3384-10-0x0000000000400000-0x0000000000424000-memory.dmp family_snakekeylogger behavioral2/memory/3384-14-0x0000000005840000-0x0000000005850000-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-1-5-21-3811856890-180006922-3689258494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-3811856890-180006922-3689258494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-3811856890-180006922-3689258494-1000\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 61 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
CIMB-Transfer_Advice-202310301849809.exedescription pid process target process PID 3080 set thread context of 3384 3080 CIMB-Transfer_Advice-202310301849809.exe RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
RegAsm.exepid process 3384 RegAsm.exe 3384 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegAsm.exedescription pid process Token: SeDebugPrivilege 3384 RegAsm.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
CIMB-Transfer_Advice-202310301849809.exedescription pid process target process PID 3080 wrote to memory of 3384 3080 CIMB-Transfer_Advice-202310301849809.exe RegAsm.exe PID 3080 wrote to memory of 3384 3080 CIMB-Transfer_Advice-202310301849809.exe RegAsm.exe PID 3080 wrote to memory of 3384 3080 CIMB-Transfer_Advice-202310301849809.exe RegAsm.exe PID 3080 wrote to memory of 3384 3080 CIMB-Transfer_Advice-202310301849809.exe RegAsm.exe PID 3080 wrote to memory of 3384 3080 CIMB-Transfer_Advice-202310301849809.exe RegAsm.exe PID 3080 wrote to memory of 3384 3080 CIMB-Transfer_Advice-202310301849809.exe RegAsm.exe PID 3080 wrote to memory of 3384 3080 CIMB-Transfer_Advice-202310301849809.exe RegAsm.exe PID 3080 wrote to memory of 3384 3080 CIMB-Transfer_Advice-202310301849809.exe RegAsm.exe -
outlook_office_path 1 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3811856890-180006922-3689258494-1000\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-1-5-21-3811856890-180006922-3689258494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\CIMB-Transfer_Advice-202310301849809.exe"C:\Users\Admin\AppData\Local\Temp\CIMB-Transfer_Advice-202310301849809.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3080 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:3384