Analysis
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max time kernel
119s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system -
submitted
18/09/2023, 15:10
Static task
static1
Behavioral task
behavioral1
Sample
Remesas Aceptadas.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
Remesas Aceptadas.exe
Resource
win10v2004-20230915-en
General
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Target
Remesas Aceptadas.exe
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Size
580KB
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MD5
65356dd18822c4dea40af821d5a3e8e5
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SHA1
5e7c5da4d94e29bc55a160788c0a76ae0b139406
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SHA256
871cd25c5a71371cf9d6cec80d9f08f191f06a228e6eb0890e0f284277559a92
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SHA512
e17e6f8cec423cee62b747283fa64decb0cbdafede0fcbe9833c38ba1b86b2f988b054c87990309d4cb11dd4b61b3889e96a528f9890e23d360066bd46ced163
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SSDEEP
12288:WAfDuHOXasG61aezZW3YQEuarwlSiwdFFZG7se31x3ocnS00I2BbJDPhE:WgpraeoIxuaMlFwvH6GHE
Malware Config
Extracted
snakekeylogger
Protocol: smtp- Host:
mail.smartgreenzone.com - Port:
587 - Username:
[email protected] - Password:
Smart&Smart123 - 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 5 IoCs
resource yara_rule behavioral1/memory/3008-17-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/3008-18-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/3008-21-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/3008-23-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/3008-25-0x0000000000400000-0x0000000000426000-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
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3185155662-718608226-894467740-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Remesas Aceptadas.exe Key opened \REGISTRY\USER\S-1-5-21-3185155662-718608226-894467740-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Remesas Aceptadas.exe Key opened \REGISTRY\USER\S-1-5-21-3185155662-718608226-894467740-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Remesas Aceptadas.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 2 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2548 set thread context of 3008 2548 Remesas Aceptadas.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 364 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 2548 Remesas Aceptadas.exe 2548 Remesas Aceptadas.exe 3008 Remesas Aceptadas.exe 2712 powershell.exe 3008 Remesas Aceptadas.exe -
Suspicious behavior: RenamesItself 1 IoCs
pid Process 3008 Remesas Aceptadas.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 2548 Remesas Aceptadas.exe Token: SeDebugPrivilege 3008 Remesas Aceptadas.exe Token: SeDebugPrivilege 2712 powershell.exe -
Suspicious use of WriteProcessMemory 17 IoCs
description pid Process procid_target PID 2548 wrote to memory of 2712 2548 Remesas Aceptadas.exe 30 PID 2548 wrote to memory of 2712 2548 Remesas Aceptadas.exe 30 PID 2548 wrote to memory of 2712 2548 Remesas Aceptadas.exe 30 PID 2548 wrote to memory of 2712 2548 Remesas Aceptadas.exe 30 PID 2548 wrote to memory of 364 2548 Remesas Aceptadas.exe 32 PID 2548 wrote to memory of 364 2548 Remesas Aceptadas.exe 32 PID 2548 wrote to memory of 364 2548 Remesas Aceptadas.exe 32 PID 2548 wrote to memory of 364 2548 Remesas Aceptadas.exe 32 PID 2548 wrote to memory of 3008 2548 Remesas Aceptadas.exe 34 PID 2548 wrote to memory of 3008 2548 Remesas Aceptadas.exe 34 PID 2548 wrote to memory of 3008 2548 Remesas Aceptadas.exe 34 PID 2548 wrote to memory of 3008 2548 Remesas Aceptadas.exe 34 PID 2548 wrote to memory of 3008 2548 Remesas Aceptadas.exe 34 PID 2548 wrote to memory of 3008 2548 Remesas Aceptadas.exe 34 PID 2548 wrote to memory of 3008 2548 Remesas Aceptadas.exe 34 PID 2548 wrote to memory of 3008 2548 Remesas Aceptadas.exe 34 PID 2548 wrote to memory of 3008 2548 Remesas Aceptadas.exe 34 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3185155662-718608226-894467740-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Remesas Aceptadas.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3185155662-718608226-894467740-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Remesas Aceptadas.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Remesas Aceptadas.exe"C:\Users\Admin\AppData\Local\Temp\Remesas Aceptadas.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2548 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\rrxwteJq.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2712
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rrxwteJq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5042.tmp"2⤵
- Creates scheduled task(s)
PID:364
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C:\Users\Admin\AppData\Local\Temp\Remesas Aceptadas.exe"C:\Users\Admin\AppData\Local\Temp\Remesas Aceptadas.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:3008
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD58e85b06b55e5a331269ab23c0c2bd979
SHA1ac9b1d4c2ba046c340ea24284855e0fca2a06880
SHA256b48a0508111c39121173c53a78bb691f5d279380d67a0c03ea47de48c0bc1cca
SHA5126c04d161ca30ec16b26be84ccc4c424296214259675337f755cb18f4c6b0567be57e02c1029f5baccb12ccfdfa0901e2b3569e911f1d4f6768b6b7e6d2776030