Analysis
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max time kernel
127s -
max time network
173s -
platform
windows10-2004_x64 -
resource
win10v2004-20231020-en -
resource tags
arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system -
submitted
08-11-2023 12:32
Static task
static1
Behavioral task
behavioral1
Sample
DEKONT-01.pdf.exe
Resource
win7-20231020-en
Behavioral task
behavioral2
Sample
DEKONT-01.pdf.exe
Resource
win10v2004-20231020-en
General
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Target
DEKONT-01.pdf.exe
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Size
175KB
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MD5
f5c32e3ed667969186412395e045db8c
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SHA1
132274978970ca54c6849f89e931cc1386d2e6bc
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SHA256
d7217211343721c3d6d51d07778a2d90910cf186ef457670dd396f90604afeed
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SHA512
6b43eb5564d2ff660d2fae6c81097b66ea4ba4fef7e6f6a9f3f3adabf10d3248b2955aa93c6077778002f6aa4bcd181ffd69f37190be18320e0688902c10c208
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SSDEEP
1536:LlZYKpARbL1uC6Ajba5V4euvvX32DEGu34HFnCxCeToYP8CIE3mWGjgfxscFCw9H:pusC6MzeuHbiGoDEnxscFCqg16aaWno
Malware Config
Extracted
snakekeylogger
https://api.telegram.org/bot6665362842:AAG0pFaR7HRKKztCR5GZinjteZ-4ePeXCWM/sendMessage?chat_id=1467583453
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/4212-11-0x0000000000400000-0x0000000000424000-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:
DEKONT-01.pdf.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 DEKONT-01.pdf.exe Key opened \REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 DEKONT-01.pdf.exe Key opened \REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 DEKONT-01.pdf.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
DEKONT-01.pdf.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Nkdfbpofqx = "C:\\Users\\Admin\\AppData\\Roaming\\Nkdfbpofqx.exe" DEKONT-01.pdf.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 52 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
DEKONT-01.pdf.exedescription pid process target process PID 2052 set thread context of 4212 2052 DEKONT-01.pdf.exe DEKONT-01.pdf.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
DEKONT-01.pdf.exepid process 4212 DEKONT-01.pdf.exe 4212 DEKONT-01.pdf.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
DEKONT-01.pdf.exeDEKONT-01.pdf.exedescription pid process Token: SeDebugPrivilege 2052 DEKONT-01.pdf.exe Token: SeDebugPrivilege 4212 DEKONT-01.pdf.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
DEKONT-01.pdf.exedescription pid process target process PID 2052 wrote to memory of 4212 2052 DEKONT-01.pdf.exe DEKONT-01.pdf.exe PID 2052 wrote to memory of 4212 2052 DEKONT-01.pdf.exe DEKONT-01.pdf.exe PID 2052 wrote to memory of 4212 2052 DEKONT-01.pdf.exe DEKONT-01.pdf.exe PID 2052 wrote to memory of 4212 2052 DEKONT-01.pdf.exe DEKONT-01.pdf.exe PID 2052 wrote to memory of 4212 2052 DEKONT-01.pdf.exe DEKONT-01.pdf.exe PID 2052 wrote to memory of 4212 2052 DEKONT-01.pdf.exe DEKONT-01.pdf.exe PID 2052 wrote to memory of 4212 2052 DEKONT-01.pdf.exe DEKONT-01.pdf.exe PID 2052 wrote to memory of 4212 2052 DEKONT-01.pdf.exe DEKONT-01.pdf.exe -
outlook_office_path 1 IoCs
Processes:
DEKONT-01.pdf.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 DEKONT-01.pdf.exe -
outlook_win_path 1 IoCs
Processes:
DEKONT-01.pdf.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 DEKONT-01.pdf.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\DEKONT-01.pdf.exe"C:\Users\Admin\AppData\Local\Temp\DEKONT-01.pdf.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2052 -
C:\Users\Admin\AppData\Local\Temp\DEKONT-01.pdf.exeC:\Users\Admin\AppData\Local\Temp\DEKONT-01.pdf.exe2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4212
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD5489c7565f9b029ba9fadff774073cc98
SHA156c05089b33ee7e7dfa9e6a2d098164efd8e1150
SHA25610bf6242da02dad8b2e1208b9dab9a7303cf986320e05e5ef20b99c9b71326d4
SHA512ddea09c011a8d4f85905842c2f34c98add0110a0b6b3b2709718c3614a2c42dec5f4f5d5b9442cfd3c6c23e9a90c8c0b25c14c3dbd42faea9cc8dd232cace1ac