Analysis Overview
SHA256
b5d3d965444fd3e7a0df7821d7ac2343dd3e4feb9fcd12e2be0910cee2b51850
Threat Level: Known bad
The file RTGS_Payment.zip was found to be: Known bad.
Malicious Activity Summary
Kutaki
Kutaki Executable
Kutaki family
Executes dropped EXE
Drops startup file
Enumerates physical storage devices
Kills process with taskkill
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-07-11 11:51
Signatures
Kutaki Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Kutaki family
Analysis: behavioral1
Detonation Overview
Submitted
2022-07-11 11:51
Reported
2022-07-11 11:54
Platform
win10v2004-20220414-en
Max time kernel
134s
Max time network
142s
Command Line
Signatures
Kutaki
Kutaki Executable
| Description | Indicator | Process | Target |
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Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\Desktop\RTGS_Payment.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qasjajch.exe | N/A |
| N/A | N/A | C:\Users\Admin\Desktop\RTGS_Payment.exe | N/A |
| N/A | N/A | C:\Users\Admin\Desktop\RTGS_Payment.exe | N/A |
| N/A | N/A | C:\Users\Admin\Desktop\RTGS_Payment.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qasjajch.exe | N/A |
| N/A | N/A | C:\Users\Admin\Desktop\RTGS_Payment.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qasjajch.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qasjajch.exe | C:\Users\Admin\Desktop\RTGS_Payment.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qasjajch.exe | C:\Users\Admin\Desktop\RTGS_Payment.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qasjajch.exe | C:\Users\Admin\Desktop\RTGS_Payment.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qasjajch.exe | C:\Users\Admin\Desktop\RTGS_Payment.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qasjajch.exe | C:\Users\Admin\Desktop\RTGS_Payment.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qasjajch.exe | C:\Users\Admin\Desktop\RTGS_Payment.exe | N/A |
Enumerates physical storage devices
Kills process with taskkill
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\taskkill.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\taskkill.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeRestorePrivilege | N/A | C:\Program Files\7-Zip\7zFM.exe | N/A |
| Token: 35 | N/A | C:\Program Files\7-Zip\7zFM.exe | N/A |
| Token: SeSecurityPrivilege | N/A | C:\Program Files\7-Zip\7zFM.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\taskkill.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\taskkill.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\7-Zip\7zFM.exe | N/A |
| N/A | N/A | C:\Program Files\7-Zip\7zFM.exe | N/A |
| N/A | N/A | C:\Program Files\7-Zip\7zFM.exe | N/A |
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Processes
C:\Windows\Explorer.exe
C:\Windows\Explorer.exe /idlist,,C:\Users\Admin\AppData\Local\Temp\RTGS_Payment.zip
C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
C:\Program Files\7-Zip\7zFM.exe
"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\RTGS_Payment.zip"
C:\Users\Admin\Desktop\RTGS_Payment.exe
"C:\Users\Admin\Desktop\RTGS_Payment.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qasjajch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qasjajch.exe"
C:\Users\Admin\Desktop\RTGS_Payment.exe
"C:\Users\Admin\Desktop\RTGS_Payment.exe"
C:\Users\Admin\Desktop\RTGS_Payment.exe
"C:\Users\Admin\Desktop\RTGS_Payment.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
C:\Users\Admin\Desktop\RTGS_Payment.exe
"C:\Users\Admin\Desktop\RTGS_Payment.exe"
C:\Windows\SysWOW64\taskkill.exe
taskkill /im qasjajch.exe /f
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qasjajch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qasjajch.exe"
C:\Windows\system32\cmd.exe
"C:\Windows\system32\cmd.exe"
C:\Users\Admin\Desktop\RTGS_Payment.exe
RTGS_Payment.exe
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
C:\Windows\SysWOW64\taskkill.exe
taskkill /im qasjajch.exe /f
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qasjajch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qasjajch.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.253.208.113:80 | tcp | |
| IE | 20.50.73.9:443 | tcp | |
| US | 8.253.208.113:80 | tcp | |
| US | 8.253.208.113:80 | tcp | |
| US | 8.253.208.113:80 | tcp | |
| US | 204.79.197.200:443 | tcp | |
| US | 8.8.8.8:53 | s-ring.msedge.net | udp |
| US | 13.107.3.254:443 | s-ring.msedge.net | tcp |
| US | 8.8.8.8:53 | amsr2.msedge.net | udp |
| NL | 104.212.67.181:443 | amsr2.msedge.net | tcp |
| NL | 104.212.67.181:443 | amsr2.msedge.net | tcp |
Files
C:\Users\Admin\Desktop\RTGS_Payment.exe
| MD5 | a6e5804f4d6a9a2a823a70ad37db3716 |
| SHA1 | f20ce20488fb607162285b0ccac95bc965bf116d |
| SHA256 | 5f7e2c3aca868d28e2321913fee896d84b6e648e9289c2dacecd5bf85f7ee743 |
| SHA512 | cdea1a027cb63173035c4d0d681ad1bd0c63bb2f0a722d6d5316aaae9e474b2e9d0b21cf7f74388ff348133deab4aab92f431d125db79e8134b98d93c26ba4be |
C:\Users\Admin\Desktop\RTGS_Payment.exe
| MD5 | a6e5804f4d6a9a2a823a70ad37db3716 |
| SHA1 | f20ce20488fb607162285b0ccac95bc965bf116d |
| SHA256 | 5f7e2c3aca868d28e2321913fee896d84b6e648e9289c2dacecd5bf85f7ee743 |
| SHA512 | cdea1a027cb63173035c4d0d681ad1bd0c63bb2f0a722d6d5316aaae9e474b2e9d0b21cf7f74388ff348133deab4aab92f431d125db79e8134b98d93c26ba4be |
memory/2396-134-0x0000000000000000-mapping.dmp
memory/2256-135-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qasjajch.exe
| MD5 | a6e5804f4d6a9a2a823a70ad37db3716 |
| SHA1 | f20ce20488fb607162285b0ccac95bc965bf116d |
| SHA256 | 5f7e2c3aca868d28e2321913fee896d84b6e648e9289c2dacecd5bf85f7ee743 |
| SHA512 | cdea1a027cb63173035c4d0d681ad1bd0c63bb2f0a722d6d5316aaae9e474b2e9d0b21cf7f74388ff348133deab4aab92f431d125db79e8134b98d93c26ba4be |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qasjajch.exe
| MD5 | a6e5804f4d6a9a2a823a70ad37db3716 |
| SHA1 | f20ce20488fb607162285b0ccac95bc965bf116d |
| SHA256 | 5f7e2c3aca868d28e2321913fee896d84b6e648e9289c2dacecd5bf85f7ee743 |
| SHA512 | cdea1a027cb63173035c4d0d681ad1bd0c63bb2f0a722d6d5316aaae9e474b2e9d0b21cf7f74388ff348133deab4aab92f431d125db79e8134b98d93c26ba4be |
C:\Users\Admin\Desktop\RTGS_Payment.exe
| MD5 | a6e5804f4d6a9a2a823a70ad37db3716 |
| SHA1 | f20ce20488fb607162285b0ccac95bc965bf116d |
| SHA256 | 5f7e2c3aca868d28e2321913fee896d84b6e648e9289c2dacecd5bf85f7ee743 |
| SHA512 | cdea1a027cb63173035c4d0d681ad1bd0c63bb2f0a722d6d5316aaae9e474b2e9d0b21cf7f74388ff348133deab4aab92f431d125db79e8134b98d93c26ba4be |
C:\Users\Admin\Desktop\RTGS_Payment.exe
| MD5 | a6e5804f4d6a9a2a823a70ad37db3716 |
| SHA1 | f20ce20488fb607162285b0ccac95bc965bf116d |
| SHA256 | 5f7e2c3aca868d28e2321913fee896d84b6e648e9289c2dacecd5bf85f7ee743 |
| SHA512 | cdea1a027cb63173035c4d0d681ad1bd0c63bb2f0a722d6d5316aaae9e474b2e9d0b21cf7f74388ff348133deab4aab92f431d125db79e8134b98d93c26ba4be |
memory/4868-146-0x0000000000000000-mapping.dmp
memory/2516-148-0x0000000000000000-mapping.dmp
C:\Users\Admin\Desktop\RTGS_Payment.exe
| MD5 | a6e5804f4d6a9a2a823a70ad37db3716 |
| SHA1 | f20ce20488fb607162285b0ccac95bc965bf116d |
| SHA256 | 5f7e2c3aca868d28e2321913fee896d84b6e648e9289c2dacecd5bf85f7ee743 |
| SHA512 | cdea1a027cb63173035c4d0d681ad1bd0c63bb2f0a722d6d5316aaae9e474b2e9d0b21cf7f74388ff348133deab4aab92f431d125db79e8134b98d93c26ba4be |
memory/3780-151-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qasjajch.exe
| MD5 | a6e5804f4d6a9a2a823a70ad37db3716 |
| SHA1 | f20ce20488fb607162285b0ccac95bc965bf116d |
| SHA256 | 5f7e2c3aca868d28e2321913fee896d84b6e648e9289c2dacecd5bf85f7ee743 |
| SHA512 | cdea1a027cb63173035c4d0d681ad1bd0c63bb2f0a722d6d5316aaae9e474b2e9d0b21cf7f74388ff348133deab4aab92f431d125db79e8134b98d93c26ba4be |
memory/3108-155-0x0000000000000000-mapping.dmp
C:\Users\Admin\Desktop\RTGS_Payment.exe
| MD5 | a6e5804f4d6a9a2a823a70ad37db3716 |
| SHA1 | f20ce20488fb607162285b0ccac95bc965bf116d |
| SHA256 | 5f7e2c3aca868d28e2321913fee896d84b6e648e9289c2dacecd5bf85f7ee743 |
| SHA512 | cdea1a027cb63173035c4d0d681ad1bd0c63bb2f0a722d6d5316aaae9e474b2e9d0b21cf7f74388ff348133deab4aab92f431d125db79e8134b98d93c26ba4be |
memory/4752-159-0x0000000000000000-mapping.dmp
memory/2184-160-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qasjajch.exe
| MD5 | a6e5804f4d6a9a2a823a70ad37db3716 |
| SHA1 | f20ce20488fb607162285b0ccac95bc965bf116d |
| SHA256 | 5f7e2c3aca868d28e2321913fee896d84b6e648e9289c2dacecd5bf85f7ee743 |
| SHA512 | cdea1a027cb63173035c4d0d681ad1bd0c63bb2f0a722d6d5316aaae9e474b2e9d0b21cf7f74388ff348133deab4aab92f431d125db79e8134b98d93c26ba4be |
memory/4428-162-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qasjajch.exe
| MD5 | a6e5804f4d6a9a2a823a70ad37db3716 |
| SHA1 | f20ce20488fb607162285b0ccac95bc965bf116d |
| SHA256 | 5f7e2c3aca868d28e2321913fee896d84b6e648e9289c2dacecd5bf85f7ee743 |
| SHA512 | cdea1a027cb63173035c4d0d681ad1bd0c63bb2f0a722d6d5316aaae9e474b2e9d0b21cf7f74388ff348133deab4aab92f431d125db79e8134b98d93c26ba4be |