Analysis
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max time kernel
120s -
max time network
141s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system -
submitted
12-10-2023 02:10
Static task
static1
Behavioral task
behavioral1
Sample
CITI USD10987 PI.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
CITI USD10987 PI.exe
Resource
win10v2004-20230915-en
General
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Target
CITI USD10987 PI.exe
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Size
925KB
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MD5
6dd5b074dc21fc159a5e98c448dab3e5
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SHA1
9be431a3d0fb17e0d7b69c62d288a7b47804fd36
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SHA256
a5395961ee5eeddf2c81583e2eb11dafe8f8ebcc350204e0c8344e4d3e1614e6
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SHA512
bbd3ea1bbe5e44f04973389ca391eab78f456a673fee59bbeed8368462dbc5a819bd5c929f8e5103337e3beb82002aeca5bc80ff25d3741fbe46c05c74e909db
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SSDEEP
12288:8IOZByuDs0aOFF9EcBeK4cwyLO/uVvrvhytVJJbngUJo37DV4ELPr0MecveyyOGp:aoeeK4PmtuJUw4np3HLcp
Malware Config
Extracted
snakekeylogger
https://api.telegram.org/bot6576397218:AAGKDzpigihdpxoThh04ULC6usDNBiyjVcE/sendMessage?chat_id=5086753017
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger payload 6 IoCs
Processes:
resource yara_rule behavioral1/memory/1688-13-0x0000000000400000-0x000000000047C000-memory.dmp family_snakekeylogger behavioral1/memory/1688-15-0x0000000000400000-0x000000000047C000-memory.dmp family_snakekeylogger behavioral1/memory/1688-19-0x0000000000400000-0x000000000047C000-memory.dmp family_snakekeylogger behavioral1/memory/1688-21-0x0000000000400000-0x000000000047C000-memory.dmp family_snakekeylogger behavioral1/memory/1688-23-0x0000000000400000-0x000000000047C000-memory.dmp family_snakekeylogger behavioral1/memory/1688-30-0x0000000000490000-0x00000000004D0000-memory.dmp family_snakekeylogger -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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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:
CITI USD10987 PI.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3849525425-30183055-657688904-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 CITI USD10987 PI.exe Key opened \REGISTRY\USER\S-1-5-21-3849525425-30183055-657688904-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 CITI USD10987 PI.exe Key opened \REGISTRY\USER\S-1-5-21-3849525425-30183055-657688904-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 CITI USD10987 PI.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 4 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
CITI USD10987 PI.exedescription pid process target process PID 1824 set thread context of 1688 1824 CITI USD10987 PI.exe CITI USD10987 PI.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
CITI USD10987 PI.exepid process 1688 CITI USD10987 PI.exe 1688 CITI USD10987 PI.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
CITI USD10987 PI.exedescription pid process Token: SeDebugPrivilege 1688 CITI USD10987 PI.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
CITI USD10987 PI.exedescription pid process target process PID 1824 wrote to memory of 2808 1824 CITI USD10987 PI.exe schtasks.exe PID 1824 wrote to memory of 2808 1824 CITI USD10987 PI.exe schtasks.exe PID 1824 wrote to memory of 2808 1824 CITI USD10987 PI.exe schtasks.exe PID 1824 wrote to memory of 2808 1824 CITI USD10987 PI.exe schtasks.exe PID 1824 wrote to memory of 1688 1824 CITI USD10987 PI.exe CITI USD10987 PI.exe PID 1824 wrote to memory of 1688 1824 CITI USD10987 PI.exe CITI USD10987 PI.exe PID 1824 wrote to memory of 1688 1824 CITI USD10987 PI.exe CITI USD10987 PI.exe PID 1824 wrote to memory of 1688 1824 CITI USD10987 PI.exe CITI USD10987 PI.exe PID 1824 wrote to memory of 1688 1824 CITI USD10987 PI.exe CITI USD10987 PI.exe PID 1824 wrote to memory of 1688 1824 CITI USD10987 PI.exe CITI USD10987 PI.exe PID 1824 wrote to memory of 1688 1824 CITI USD10987 PI.exe CITI USD10987 PI.exe PID 1824 wrote to memory of 1688 1824 CITI USD10987 PI.exe CITI USD10987 PI.exe PID 1824 wrote to memory of 1688 1824 CITI USD10987 PI.exe CITI USD10987 PI.exe -
outlook_office_path 1 IoCs
Processes:
CITI USD10987 PI.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3849525425-30183055-657688904-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 CITI USD10987 PI.exe -
outlook_win_path 1 IoCs
Processes:
CITI USD10987 PI.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3849525425-30183055-657688904-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 CITI USD10987 PI.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\CITI USD10987 PI.exe"C:\Users\Admin\AppData\Local\Temp\CITI USD10987 PI.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1824 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\lCcCZGSzAO" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2B93.tmp"2⤵
- Creates scheduled task(s)
PID:2808 -
C:\Users\Admin\AppData\Local\Temp\CITI USD10987 PI.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1688
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD54be49bf31229f89a18977baaf59fae46
SHA1e7fdf4eed5f271e8cd154d5b10cb9154b1a880a7
SHA2568c415f2fda328cdb6a1fb21d39bbfc67b9c885f82d69a5c66fb6742b7a1810a5
SHA512d5f97e55a734a5a3969b4171f233a5672144b06aaead3b5605d09420f8b82cc4e12f1c43b737ef7e3e85b65a3cd41de0f9a95dfd1e6b58817dac3142f0339626