Analysis
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max time kernel
72s -
max time network
135s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
30/05/2023, 06:54
Static task
static1
Behavioral task
behavioral1
Sample
RE facturas 55-23-.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
RE facturas 55-23-.exe
Resource
win10v2004-20230220-en
General
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Target
RE facturas 55-23-.exe
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Size
736KB
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MD5
bfee2bc7e6193b914c419f6def71d567
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SHA1
5313ba5781a8bf704460f001d7bcdb6d7f37fa4f
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SHA256
308a5ed2f79e93b600af3147ea292f64636d31b858a27436d175b933400ead85
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SHA512
40625a0ceaaf9d04a084e5a137179a316aecd134615ed9d852dbf460dceae7d3f445ce7c03aa74a275449109746ce6dff94df52514a0c4d2a12d1560b4fcab3c
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SSDEEP
12288:Z3ZbakH2iNfmFx2iqNhujGjUDsBAYbXXVat+zVCrKrGdsuZhIOw3GyFjnEzFOz8/:Z3cs1lmFxUKsTVatN7yuZhSjEzFOz8
Malware Config
Extracted
snakekeylogger
https://api.telegram.org/bot5967839484:AAGJtiRve079uoreJ5X0WycNZ-zS90-jUJE/sendMessage?chat_id=5928418129
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger payload 7 IoCs
resource yara_rule behavioral1/memory/324-75-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/324-76-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/324-78-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/324-80-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/324-82-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/556-83-0x0000000002560000-0x00000000025A0000-memory.dmp family_snakekeylogger behavioral1/memory/1492-85-0x0000000002700000-0x0000000002740000-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
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RE facturas 55-23-.exe Key opened \REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RE facturas 55-23-.exe Key opened \REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RE facturas 55-23-.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.
flow ioc 4 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1300 set thread context of 324 1300 RE facturas 55-23-.exe 34 -
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.
pid Process 2020 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 324 RE facturas 55-23-.exe 556 powershell.exe 1492 powershell.exe 324 RE facturas 55-23-.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 324 RE facturas 55-23-.exe Token: SeDebugPrivilege 556 powershell.exe Token: SeDebugPrivilege 1492 powershell.exe -
Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 1300 wrote to memory of 1492 1300 RE facturas 55-23-.exe 28 PID 1300 wrote to memory of 1492 1300 RE facturas 55-23-.exe 28 PID 1300 wrote to memory of 1492 1300 RE facturas 55-23-.exe 28 PID 1300 wrote to memory of 1492 1300 RE facturas 55-23-.exe 28 PID 1300 wrote to memory of 556 1300 RE facturas 55-23-.exe 30 PID 1300 wrote to memory of 556 1300 RE facturas 55-23-.exe 30 PID 1300 wrote to memory of 556 1300 RE facturas 55-23-.exe 30 PID 1300 wrote to memory of 556 1300 RE facturas 55-23-.exe 30 PID 1300 wrote to memory of 2020 1300 RE facturas 55-23-.exe 31 PID 1300 wrote to memory of 2020 1300 RE facturas 55-23-.exe 31 PID 1300 wrote to memory of 2020 1300 RE facturas 55-23-.exe 31 PID 1300 wrote to memory of 2020 1300 RE facturas 55-23-.exe 31 PID 1300 wrote to memory of 324 1300 RE facturas 55-23-.exe 34 PID 1300 wrote to memory of 324 1300 RE facturas 55-23-.exe 34 PID 1300 wrote to memory of 324 1300 RE facturas 55-23-.exe 34 PID 1300 wrote to memory of 324 1300 RE facturas 55-23-.exe 34 PID 1300 wrote to memory of 324 1300 RE facturas 55-23-.exe 34 PID 1300 wrote to memory of 324 1300 RE facturas 55-23-.exe 34 PID 1300 wrote to memory of 324 1300 RE facturas 55-23-.exe 34 PID 1300 wrote to memory of 324 1300 RE facturas 55-23-.exe 34 PID 1300 wrote to memory of 324 1300 RE facturas 55-23-.exe 34 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RE facturas 55-23-.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RE facturas 55-23-.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\RE facturas 55-23-.exe"C:\Users\Admin\AppData\Local\Temp\RE facturas 55-23-.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1300 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\RE facturas 55-23-.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1492
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\lnVxkRbaQiXQZC.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:556
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\lnVxkRbaQiXQZC" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF577.tmp"2⤵
- Creates scheduled task(s)
PID:2020
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C:\Users\Admin\AppData\Local\Temp\RE facturas 55-23-.exe"C:\Users\Admin\AppData\Local\Temp\RE facturas 55-23-.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:324
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1KB
MD5948a0f88ef618dbfe58fdd316569cbc3
SHA10cf00c7493584e4af088044779a08210c45d27a1
SHA2565a78a5309b11e6367c612511d3625baf4315c1bbd2ae11f8c4f84e1f882b0b1e
SHA5120acc88297c998ec89b53627e15277cb9fc72ec6868aea3b3aa1073ae56ce7558fa6964ef732d8d7ca51198183dc648277ef77233120ad04a61a86a41f4c9a022
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\RXT3P8709HQ5DYLY8J4R.temp
Filesize7KB
MD5e5d8ed2db7610e306f07dba8525ba9f9
SHA19faf3d965ef41ed13be4a05845ea851c37a1bc1c
SHA256a9360ac012f669998f87ded23a1a4865ee7de7138b2e87093ec1d4411de51f3c
SHA512700a190957a5f1d9ed19bff43a869898968f86fbba636b8d33133a3de5210fc84e8c3c511c110494ad8fa4fba964adacd0967fa509fce1f752990300b95eb72f
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
Filesize7KB
MD5e5d8ed2db7610e306f07dba8525ba9f9
SHA19faf3d965ef41ed13be4a05845ea851c37a1bc1c
SHA256a9360ac012f669998f87ded23a1a4865ee7de7138b2e87093ec1d4411de51f3c
SHA512700a190957a5f1d9ed19bff43a869898968f86fbba636b8d33133a3de5210fc84e8c3c511c110494ad8fa4fba964adacd0967fa509fce1f752990300b95eb72f