Analysis
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max time kernel
140s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
20/09/2023, 07:52
Static task
static1
Behavioral task
behavioral1
Sample
Commkkhwb.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
Commkkhwb.exe
Resource
win10v2004-20230915-en
General
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Target
Commkkhwb.exe
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Size
68KB
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MD5
9978b4e89a86b7e659e6d50737a5a2e3
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SHA1
ae5553562926cdefd411108d898fed36ed69bede
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SHA256
e74eac907deb295455e5856a2f4030c175a134dd3f2d681cec2d59ebb387c275
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SHA512
55b64faf8aec29f2e5600a8f83cf366f080d63cfec26d767760d9f48774b177e54767b84f6916bee585e4c8020c4a49dc53dc2fb59af898175b2b2cf81e473f2
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SSDEEP
768:m4GpAgE5/XuIHDI0w7yrSAllWoqEqRyflqFwH9SKzaDq/qTplPWrFDF+84PB0/tv:aAgkuOuyrzlhl8c/ti6GCKoqi
Malware Config
Extracted
snakekeylogger
https://api.telegram.org/bot6566589691:AAFApTT4-vdsgK7fcVU9cwFelVxNx3knl8M/sendMessage?chat_id=5582419717
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/3276-9-0x0000000140000000-0x0000000140022000-memory.dmp family_snakekeylogger -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe Key opened \REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe Key opened \REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fffffff = "C:\\Users\\Admin\\AppData\\Roaming\\fffffff.exe" Commkkhwb.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 21 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4564 set thread context of 3276 4564 Commkkhwb.exe 85 -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 4564 Commkkhwb.exe 3276 MSBuild.exe 3276 MSBuild.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4564 Commkkhwb.exe Token: SeDebugPrivilege 3276 MSBuild.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4564 wrote to memory of 3276 4564 Commkkhwb.exe 85 PID 4564 wrote to memory of 3276 4564 Commkkhwb.exe 85 PID 4564 wrote to memory of 3276 4564 Commkkhwb.exe 85 PID 4564 wrote to memory of 3276 4564 Commkkhwb.exe 85 PID 4564 wrote to memory of 3276 4564 Commkkhwb.exe 85 PID 4564 wrote to memory of 3276 4564 Commkkhwb.exe 85 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Commkkhwb.exe"C:\Users\Admin\AppData\Local\Temp\Commkkhwb.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4564 -
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:3276
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