Analysis
-
max time kernel
121s -
max time network
162s -
platform
windows7_x64 -
resource
win7-20231020-en -
resource tags
arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system -
submitted
30-11-2023 19:12
Static task
static1
Behavioral task
behavioral1
Sample
Halkbank_Ekstre_20231129_434343_4432123.pdf.exe
Resource
win7-20231020-en
Behavioral task
behavioral2
Sample
Halkbank_Ekstre_20231129_434343_4432123.pdf.exe
Resource
win10v2004-20231127-en
General
-
Target
Halkbank_Ekstre_20231129_434343_4432123.pdf.exe
-
Size
578KB
-
MD5
e774b25a7a8751c5725ed2ba1dede243
-
SHA1
71e7a04a9d9448d2da4c353642829edcc8fdcb67
-
SHA256
3087ad6676cc9169389d5dcbe9328099c9fb386a8e2c0ebaf2eae4c92924e692
-
SHA512
8d825a39760d2792b2b0a0403f781963167642e936e4b857c2c34144fe8c16b4b6fd7abb0c83c89999af5652c73151d39b9c45327fb75ffde866dc0f41aa5908
-
SSDEEP
12288:Tjqcopox437NBg4OChLjFg/r8tn2FLXNFT3xOg8cqWdE:Ze3Hg43hLBio2FLXNB3xOgQoE
Malware Config
Signatures
-
Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
-
Snake Keylogger payload 5 IoCs
Processes:
resource yara_rule behavioral1/memory/2376-13-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/2376-10-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/2376-9-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/2376-15-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/2376-17-0x0000000000400000-0x0000000000426000-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.
-
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
Halkbank_Ekstre_20231129_434343_4432123.pdf.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Halkbank_Ekstre_20231129_434343_4432123.pdf.exe Key opened \REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Halkbank_Ekstre_20231129_434343_4432123.pdf.exe Key opened \REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Halkbank_Ekstre_20231129_434343_4432123.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 4 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Halkbank_Ekstre_20231129_434343_4432123.pdf.exedescription pid process target process PID 2284 set thread context of 2376 2284 Halkbank_Ekstre_20231129_434343_4432123.pdf.exe Halkbank_Ekstre_20231129_434343_4432123.pdf.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
Halkbank_Ekstre_20231129_434343_4432123.pdf.exepid process 2376 Halkbank_Ekstre_20231129_434343_4432123.pdf.exe 2376 Halkbank_Ekstre_20231129_434343_4432123.pdf.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
Halkbank_Ekstre_20231129_434343_4432123.pdf.exedescription pid process Token: SeDebugPrivilege 2376 Halkbank_Ekstre_20231129_434343_4432123.pdf.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
Halkbank_Ekstre_20231129_434343_4432123.pdf.exedescription pid process target process PID 2284 wrote to memory of 2376 2284 Halkbank_Ekstre_20231129_434343_4432123.pdf.exe Halkbank_Ekstre_20231129_434343_4432123.pdf.exe PID 2284 wrote to memory of 2376 2284 Halkbank_Ekstre_20231129_434343_4432123.pdf.exe Halkbank_Ekstre_20231129_434343_4432123.pdf.exe PID 2284 wrote to memory of 2376 2284 Halkbank_Ekstre_20231129_434343_4432123.pdf.exe Halkbank_Ekstre_20231129_434343_4432123.pdf.exe PID 2284 wrote to memory of 2376 2284 Halkbank_Ekstre_20231129_434343_4432123.pdf.exe Halkbank_Ekstre_20231129_434343_4432123.pdf.exe PID 2284 wrote to memory of 2376 2284 Halkbank_Ekstre_20231129_434343_4432123.pdf.exe Halkbank_Ekstre_20231129_434343_4432123.pdf.exe PID 2284 wrote to memory of 2376 2284 Halkbank_Ekstre_20231129_434343_4432123.pdf.exe Halkbank_Ekstre_20231129_434343_4432123.pdf.exe PID 2284 wrote to memory of 2376 2284 Halkbank_Ekstre_20231129_434343_4432123.pdf.exe Halkbank_Ekstre_20231129_434343_4432123.pdf.exe PID 2284 wrote to memory of 2376 2284 Halkbank_Ekstre_20231129_434343_4432123.pdf.exe Halkbank_Ekstre_20231129_434343_4432123.pdf.exe PID 2284 wrote to memory of 2376 2284 Halkbank_Ekstre_20231129_434343_4432123.pdf.exe Halkbank_Ekstre_20231129_434343_4432123.pdf.exe -
outlook_office_path 1 IoCs
Processes:
Halkbank_Ekstre_20231129_434343_4432123.pdf.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Halkbank_Ekstre_20231129_434343_4432123.pdf.exe -
outlook_win_path 1 IoCs
Processes:
Halkbank_Ekstre_20231129_434343_4432123.pdf.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Halkbank_Ekstre_20231129_434343_4432123.pdf.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231129_434343_4432123.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231129_434343_4432123.pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2284 -
C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231129_434343_4432123.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231129_434343_4432123.pdf.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2376