Analysis
- max time kernel
95s - max time network
132s - platform
windows7_x64 - resource
win7-20230220-en - resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system - submitted
21/04/2023, 05:56
Static task
static1
Behavioral task
behavioral1
Sample
PO TY656FG.xlsx.exe
Resource
win7-20230220-en
13 signatures
150 seconds
Behavioral task
behavioral2
Sample
PO TY656FG.xlsx.exe
Resource
win10v2004-20230220-en
13 signatures
150 seconds
General
- Target PO TY656FG.xlsx.exe
- Size 607KB
- Sample230421-gm2cvsed58
- SHA256 78ff2f0f8d66532c03451f447a0cc030363cca6ad195ec248d1d64dda9afb2b4
- MD5 622a2d2a3fdc972dbeac3cec35b93349
- SHA1 68583665b00189ad43032aff97844f4e4156b51d
- SHA512 55c4f9a6bbc25a5b0518b2b40abb2b7e496f10d26a433fc00bcdbeffb7a46895a1c4c1e0a397dc6c39725255716872d8ccfb89d318f26ff05827e7802d8892e5
- SSDEEP 12288:u2iNW3eywn/dxBbJuSJkRluEs1RMePBWlt9s93:u1MSn/L5JuMkRlBgMOWltG93
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
Family
-
snakekeylogger
C2
-
https://api.telegram.org/bot6221660400:AAGb-WADrhdDFxd9kxzjtg3jdDw9-uvNVlM/sendMessage?chat_id=6200392710
Signatures
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Snake Keylogger payload 7 IoCs
resource yara_rule behavioral1/memory/372-63-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/372-64-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/372-66-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/372-68-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/372-70-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/372-71-0x00000000049E0000-0x0000000004A20000-memory.dmp family_snakekeylogger behavioral1/memory/372-72-0x00000000049E0000-0x0000000004A20000-memory.dmp family_snakekeylogger - StormKitty
StormKitty is an open source info stealer written in C#.
- StormKitty payload 6 IoCs
resource yara_rule behavioral1/memory/372-63-0x0000000000400000-0x0000000000426000-memory.dmp family_stormkitty behavioral1/memory/372-64-0x0000000000400000-0x0000000000426000-memory.dmp family_stormkitty behavioral1/memory/372-66-0x0000000000400000-0x0000000000426000-memory.dmp family_stormkitty behavioral1/memory/372-68-0x0000000000400000-0x0000000000426000-memory.dmp family_stormkitty behavioral1/memory/372-70-0x0000000000400000-0x0000000000426000-memory.dmp family_stormkitty behavioral1/memory/372-71-0x00000000049E0000-0x0000000004A20000-memory.dmp family_stormkitty - 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
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO TY656FG.xlsx.exe Key opened \REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO TY656FG.xlsx.exe Key opened \REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO TY656FG.xlsx.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 4 checkip.dyndns.org - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2044 set thread context of 372 2044 PO TY656FG.xlsx.exe 27 - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 372 PO TY656FG.xlsx.exe 372 PO TY656FG.xlsx.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 372 PO TY656FG.xlsx.exe - Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2044 wrote to memory of 372 2044 PO TY656FG.xlsx.exe 27 PID 2044 wrote to memory of 372 2044 PO TY656FG.xlsx.exe 27 PID 2044 wrote to memory of 372 2044 PO TY656FG.xlsx.exe 27 PID 2044 wrote to memory of 372 2044 PO TY656FG.xlsx.exe 27 PID 2044 wrote to memory of 372 2044 PO TY656FG.xlsx.exe 27 PID 2044 wrote to memory of 372 2044 PO TY656FG.xlsx.exe 27 PID 2044 wrote to memory of 372 2044 PO TY656FG.xlsx.exe 27 PID 2044 wrote to memory of 372 2044 PO TY656FG.xlsx.exe 27 PID 2044 wrote to memory of 372 2044 PO TY656FG.xlsx.exe 27 - outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO TY656FG.xlsx.exe - outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO TY656FG.xlsx.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\PO TY656FG.xlsx.exe"C:\Users\Admin\AppData\Local\Temp\PO TY656FG.xlsx.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2044 -
C:\Users\Admin\AppData\Local\Temp\PO TY656FG.xlsx.exe"C:\Users\Admin\AppData\Local\Temp\PO TY656FG.xlsx.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:372
-