Analysis
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max time kernel
139s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20231127-en -
resource tags
arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system -
submitted
01-12-2023 20:52
Static task
static1
Behavioral task
behavioral1
Sample
KcOX.exe
Resource
win7-20231023-en
Behavioral task
behavioral2
Sample
KcOX.exe
Resource
win10v2004-20231127-en
General
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Target
KcOX.exe
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Size
609KB
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MD5
fe03b712d2e463fdeb67f9f9f2d98fc9
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SHA1
d978aed329e47d47791e13f31fc4aa823e545f89
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SHA256
1ab6ad1baf7099b79f78d5cc575dc08d33320b1f607b6fa038432c3a27fb2dfd
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SHA512
170ca520c7a9489f8245ae18fb3fa5aa7bc1441d183daa4f72e34a3bbbd393ca46427c25a3809fd805c19348eebf880f1b51c4c147b0ddeac8f1aad02fcd3a03
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SSDEEP
12288:hMdIt/5J/tXcPl1RWLDmJr4YoKnE5ZrZ4YIfjwIF7:iWBJZ0lSuEbT5ZrlI7ws7
Malware Config
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/2356-22-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
KcOX.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2598572287-1024438387-935107970-1000\Control Panel\International\Geo\Nation KcOX.exe -
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:
KcOX.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2598572287-1024438387-935107970-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 KcOX.exe Key opened \REGISTRY\USER\S-1-5-21-2598572287-1024438387-935107970-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 KcOX.exe Key opened \REGISTRY\USER\S-1-5-21-2598572287-1024438387-935107970-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 KcOX.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 35 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
KcOX.exedescription pid process target process PID 4480 set thread context of 2356 4480 KcOX.exe KcOX.exe -
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.
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
powershell.exeKcOX.exepid process 3812 powershell.exe 2356 KcOX.exe 3812 powershell.exe 2356 KcOX.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
powershell.exeKcOX.exedescription pid process Token: SeDebugPrivilege 3812 powershell.exe Token: SeDebugPrivilege 2356 KcOX.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
KcOX.exedescription pid process target process PID 4480 wrote to memory of 3812 4480 KcOX.exe powershell.exe PID 4480 wrote to memory of 3812 4480 KcOX.exe powershell.exe PID 4480 wrote to memory of 3812 4480 KcOX.exe powershell.exe PID 4480 wrote to memory of 4380 4480 KcOX.exe schtasks.exe PID 4480 wrote to memory of 4380 4480 KcOX.exe schtasks.exe PID 4480 wrote to memory of 4380 4480 KcOX.exe schtasks.exe PID 4480 wrote to memory of 2356 4480 KcOX.exe KcOX.exe PID 4480 wrote to memory of 2356 4480 KcOX.exe KcOX.exe PID 4480 wrote to memory of 2356 4480 KcOX.exe KcOX.exe PID 4480 wrote to memory of 2356 4480 KcOX.exe KcOX.exe PID 4480 wrote to memory of 2356 4480 KcOX.exe KcOX.exe PID 4480 wrote to memory of 2356 4480 KcOX.exe KcOX.exe PID 4480 wrote to memory of 2356 4480 KcOX.exe KcOX.exe PID 4480 wrote to memory of 2356 4480 KcOX.exe KcOX.exe -
outlook_office_path 1 IoCs
Processes:
KcOX.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2598572287-1024438387-935107970-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 KcOX.exe -
outlook_win_path 1 IoCs
Processes:
KcOX.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2598572287-1024438387-935107970-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 KcOX.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\KcOX.exe"C:\Users\Admin\AppData\Local\Temp\KcOX.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4480 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\DTeVcECl.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3812 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DTeVcECl" /XML "C:\Users\Admin\AppData\Local\Temp\tmp26C.tmp"2⤵
- Creates scheduled task(s)
PID:4380 -
C:\Users\Admin\AppData\Local\Temp\KcOX.exe"C:\Users\Admin\AppData\Local\Temp\KcOX.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2356
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD58ec831f3e3a3f77e4a7b9cd32b48384c
SHA1d83f09fd87c5bd86e045873c231c14836e76a05c
SHA2567667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
SHA51226bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD56f8148020c49d3e9362565fc873e0176
SHA15915eee6e88533f18e29059e2d5d6e412e0518fb
SHA2563aff6c459cedc5b54e31e0470f4eb514bbc3326a62efd44e254dfaeb375530ff
SHA51284ba06d1cd14cd1d118a73edf0ff4a31cac67461f2c04e3ff2846f3adbfb5c1613da4af7e529bc6044ac4dfa1d2abb0abc85d96096f79f20278e174375077a7e