Analysis
- max time kernel
65s - max time network
131s - platform
windows7_x64 - resource
win7-20220812-en - resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system - submitted
30/08/2022, 00:10
Static task
static1
Behavioral task
behavioral1
Sample
cf648d0d6dc000fee07dbd7b6b04d245.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
cf648d0d6dc000fee07dbd7b6b04d245.exe
Resource
win10v2004-20220812-en
General
- Target cf648d0d6dc000fee07dbd7b6b04d245.exe
- Size 767KB
- Sample220830-af2lqaaae8
- SHA256 dfdedc4060f4944298bcdf25778b7f7eaaef43fdae61238d7debf88825e66294
- MD5 cf648d0d6dc000fee07dbd7b6b04d245
- SHA1 28fdfad4f62577cfe3ada300e0697742461e6e39
- SHA512 04b2836ecad721841ce56d356e1e14201a7a1a6f798a0bd9b51a3f1cdeb89eafe64614f46c2ea71f37e0993526eb3b7894be1b886ec721d45f5e60c44d99dba0
- SSDEEP 12288:qo0YV0J8j5czSBqgXqBf3CSrd6JOosHTWLgtQ5kls8cKXtLyTrjAc+SdgkY:R4WBqzf3Nrd6v+CklFcQOTrCSdgkY
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
-
snakekeylogger
-
Protocol
smtp
-
Host
cp5ua.hyperhost.ua
-
Port
587
-
Username
-
Password
7213575aceACE@#$
-
Email to
-
https://api.telegram.org/bot5321688653:AAEI2yqGrOA_-sRZ3xaqutrexraSgFa0AnA/sendMessage?chat_id=5048077662
Signatures
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Snake Keylogger payload 3 IoCs
resource yara_rule behavioral1/memory/1928-70-0x0000000000400000-0x0000000000615000-memory.dmp family_snakekeylogger behavioral1/memory/1928-71-0x0000000000401000-0x0000000000615000-memory.dmp family_snakekeylogger behavioral1/memory/1928-73-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger - Checks QEMU agent file 2 TTPs 2 IoCs
Checks presence of QEMU agent, possibly to detect virtualization.
description ioc Process File opened (read-only) C:\Program Files\Qemu-ga\qemu-ga.exe caspol.exe File opened (read-only) C:\Program Files\Qemu-ga\qemu-ga.exe cf648d0d6dc000fee07dbd7b6b04d245.exe - Loads dropped DLL 1 IoCs
pid Process 1824 cf648d0d6dc000fee07dbd7b6b04d245.exe - Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 caspol.exe Key opened \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 caspol.exe Key opened \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 caspol.exe - Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- 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 5 checkip.dyndns.org - Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
pid Process 1928 caspol.exe - Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
pid Process 1824 cf648d0d6dc000fee07dbd7b6b04d245.exe 1928 caspol.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1824 set thread context of 1928 1824 cf648d0d6dc000fee07dbd7b6b04d245.exe 27 - Drops file in Program Files directory 1 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Bayreren\Socionomen\Transtemporal\Dunkled.ini cf648d0d6dc000fee07dbd7b6b04d245.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1928 caspol.exe - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 1824 cf648d0d6dc000fee07dbd7b6b04d245.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1928 caspol.exe - Suspicious use of WriteProcessMemory 5 IoCs
description pid Process procid_target PID 1824 wrote to memory of 1928 1824 cf648d0d6dc000fee07dbd7b6b04d245.exe 27 PID 1824 wrote to memory of 1928 1824 cf648d0d6dc000fee07dbd7b6b04d245.exe 27 PID 1824 wrote to memory of 1928 1824 cf648d0d6dc000fee07dbd7b6b04d245.exe 27 PID 1824 wrote to memory of 1928 1824 cf648d0d6dc000fee07dbd7b6b04d245.exe 27 PID 1824 wrote to memory of 1928 1824 cf648d0d6dc000fee07dbd7b6b04d245.exe 27 - outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 caspol.exe - outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 caspol.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\cf648d0d6dc000fee07dbd7b6b04d245.exe"C:\Users\Admin\AppData\Local\Temp\cf648d0d6dc000fee07dbd7b6b04d245.exe"1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1824 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe"C:\Users\Admin\AppData\Local\Temp\cf648d0d6dc000fee07dbd7b6b04d245.exe"2⤵
- Checks QEMU agent file
- Accesses Microsoft Outlook profiles
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1928
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path \Users\Admin\AppData\Local\Temp\nsj38DE.tmp\System.dll
- Size 11KB
- SHA256 2e226715419a5882e2e14278940ee8ef0aa648a3ef7af5b3dc252674111962bc
- MD5 a4dd044bcd94e9b3370ccf095b31f896
- SHA1 17c78201323ab2095bc53184aa8267c9187d5173
- SHA512 87335a43b9ca13e1300c7c23e702e87c669e2bcf4f6065f0c684fc53165e9c1f091cc4d79a3eca3910f0518d3b647120ac0be1a68eaade2e75eaa64adfc92c5a
- SSDEEP 192:em24sihno00Wfl97nH6T2enXwWobpWBTU4VtHT7dmN35OlESl:m8QIl975eXqlWBrz7YLOlE
- MD5 SHA1 SHA512 SSDEEP