Analysis
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max time kernel
135s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
08/05/2023, 08:24
Static task
static1
Behavioral task
behavioral1
Sample
Comprovativo de Transferência.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
Comprovativo de Transferência.exe
Resource
win10v2004-20230220-en
General
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Target
Comprovativo de Transferência.exe
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Size
514KB
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MD5
cac8563e5e1813454b699556d41721c9
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SHA1
e76013e8e94ac9acc11ea23dbd3ff997fe797197
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SHA256
2535b5bde8fbe58fcddfbf7acf196a1290159e707c87929a1ae94bc7970e1c5c
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SHA512
76d7f7332dbc5979ab852ae69cdfc42493bf227f825253e6db2c39b73e64199a10c8ac4ef48edef33aae6628f531aee60cde8f49d61eb677e727a273672d6cb5
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SSDEEP
6144:8LHy9CiejeHdPvqIAcfHqes4/UfmDHoQHP7cUGZYmwZTln6Algv6+w8WVz5fH4Xj:CoCEpvlqex/Uaw9MZ96nW1tYXrnis
Malware Config
Extracted
Protocol: smtp- Host:
mail.libreriamarpe.com - Port:
587 - Username:
[email protected] - Password:
f9mU@96n
Extracted
snakekeylogger
Protocol: smtp- Host:
mail.libreriamarpe.com - Port:
587 - Username:
[email protected] - Password:
f9mU@96n - 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 1 IoCs
resource yara_rule behavioral2/memory/4820-141-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger -
StormKitty
StormKitty is an open source info stealer written in C#.
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StormKitty payload 1 IoCs
resource yara_rule behavioral2/memory/4820-141-0x0000000000400000-0x0000000000426000-memory.dmp family_stormkitty -
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-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Comprovativo de Transferência.exe Key opened \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Comprovativo de Transferência.exe Key opened \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Comprovativo de Transferência.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 30 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3888 set thread context of 4820 3888 Comprovativo de Transferência.exe 92 -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 3888 Comprovativo de Transferência.exe 3888 Comprovativo de Transferência.exe 4820 Comprovativo de Transferência.exe 4820 Comprovativo de Transferência.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 3888 Comprovativo de Transferência.exe Token: SeDebugPrivilege 4820 Comprovativo de Transferência.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 3888 wrote to memory of 4820 3888 Comprovativo de Transferência.exe 92 PID 3888 wrote to memory of 4820 3888 Comprovativo de Transferência.exe 92 PID 3888 wrote to memory of 4820 3888 Comprovativo de Transferência.exe 92 PID 3888 wrote to memory of 4820 3888 Comprovativo de Transferência.exe 92 PID 3888 wrote to memory of 4820 3888 Comprovativo de Transferência.exe 92 PID 3888 wrote to memory of 4820 3888 Comprovativo de Transferência.exe 92 PID 3888 wrote to memory of 4820 3888 Comprovativo de Transferência.exe 92 PID 3888 wrote to memory of 4820 3888 Comprovativo de Transferência.exe 92 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Comprovativo de Transferência.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Comprovativo de Transferência.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Comprovativo de Transferência.exe"C:\Users\Admin\AppData\Local\Temp\Comprovativo de Transferência.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3888 -
C:\Users\Admin\AppData\Local\Temp\Comprovativo de Transferência.exe"C:\Users\Admin\AppData\Local\Temp\Comprovativo de Transferência.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4820
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1KB
MD5b57b1ea0e9817bd8c90747e991b77447
SHA1df63d993dd8b356c2aa8bdd5fed4ead467d0ef1f
SHA256af13b787c47fa267cbca28ec758f254d5407c5a418fb86fff25ce5aec8b0f99c
SHA51231e8ed3d1f8a3050b53e2b54ded1cde057ab76da28785347ba45a24535974207b14cb7f54f620f6e3a6e679705d7349005d7c29170d988c09c071c852cde621c