Analysis
-
max time kernel
150s -
max time network
141s -
platform
windows10-2004_x64 -
resource
win10v2004-20220721-en -
resource tags
arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system -
submitted
12/08/2022, 09:40
Static task
static1
Behavioral task
behavioral1
Sample
Halkbank_Ekstre_20210706_142426_2309801.doc.exe
Resource
win7-20220718-en
Behavioral task
behavioral2
Sample
Halkbank_Ekstre_20210706_142426_2309801.doc.exe
Resource
win10v2004-20220721-en
General
-
Target
Halkbank_Ekstre_20210706_142426_2309801.doc.exe
-
Size
628KB
-
MD5
e5399f1591e286e34e46bf3d168f2cca
-
SHA1
38d5b0867cebb5e49de67e42134d3ca53f1f4abc
-
SHA256
1fa00eab8fe9ab441e2bbc0be43c34a77724c3a0b580b733ecdbe89a3e0d03b7
-
SHA512
2120419cc750b7222e28c24f70828956ed377275d1ff9a9791911cc5764994572ccc5f7910a1051d8739cf101103648cd0027a752664326dad212e814f4bbebb
Malware Config
Signatures
-
BluStealer
A Modular information stealer written in Visual Basic.
-
StormKitty
StormKitty is an open source info stealer written in C#.
-
StormKitty payload 1 IoCs
resource yara_rule behavioral2/memory/1224-145-0x0000000000BB0000-0x0000000000BCA000-memory.dmp family_stormkitty -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AppLaunch.exe Key opened \REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AppLaunch.exe Key opened \REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AppLaunch.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 61 icanhazip.com -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 3984 set thread context of 4616 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 101 PID 4616 set thread context of 1224 4616 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 102 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0 AppLaunch.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier AppLaunch.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
pid Process 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe Token: SeDebugPrivilege 1224 AppLaunch.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 4616 Halkbank_Ekstre_20210706_142426_2309801.doc.exe -
Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 3984 wrote to memory of 1448 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 100 PID 3984 wrote to memory of 1448 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 100 PID 3984 wrote to memory of 1448 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 100 PID 3984 wrote to memory of 4616 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 101 PID 3984 wrote to memory of 4616 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 101 PID 3984 wrote to memory of 4616 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 101 PID 3984 wrote to memory of 4616 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 101 PID 3984 wrote to memory of 4616 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 101 PID 3984 wrote to memory of 4616 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 101 PID 3984 wrote to memory of 4616 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 101 PID 3984 wrote to memory of 4616 3984 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 101 PID 4616 wrote to memory of 1224 4616 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 102 PID 4616 wrote to memory of 1224 4616 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 102 PID 4616 wrote to memory of 1224 4616 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 102 PID 4616 wrote to memory of 1224 4616 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 102 PID 4616 wrote to memory of 1224 4616 Halkbank_Ekstre_20210706_142426_2309801.doc.exe 102 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AppLaunch.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AppLaunch.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20210706_142426_2309801.doc.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20210706_142426_2309801.doc.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3984 -
C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20210706_142426_2309801.doc.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20210706_142426_2309801.doc.exe"2⤵PID:1448
-
-
C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20210706_142426_2309801.doc.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20210706_142426_2309801.doc.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4616 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe3⤵
- Accesses Microsoft Outlook profiles
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1224
-
-