Analysis
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max time kernel
149s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
05-09-2024 01:42
Static task
static1
Behavioral task
behavioral1
Sample
b0ae1dd93add4f91d67c516307541ffbeb8cb2696671d18248992f2ebdfb10d8.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
b0ae1dd93add4f91d67c516307541ffbeb8cb2696671d18248992f2ebdfb10d8.exe
Resource
win10v2004-20240802-en
General
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Target
b0ae1dd93add4f91d67c516307541ffbeb8cb2696671d18248992f2ebdfb10d8.exe
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Size
25KB
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MD5
0958b133909fd7e905bfdf6d07864afa
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SHA1
70c2bbe1328cde44369a2468846acf221083f858
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SHA256
b0ae1dd93add4f91d67c516307541ffbeb8cb2696671d18248992f2ebdfb10d8
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SHA512
377e31e99476fd8fa5922ea04928539c943832919564526ec030cbb8ea91112a566d996462da655aab1b654c6123c7c7942b48e521c5864c1955981ecfaa6064
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SSDEEP
768:svpjb780jOidrnhjRKPj/AJUu7V3yiEs8IsBy9RvPdOi:QjzjOah4jo62yiY9ByvVOi
Malware Config
Extracted
njrat
Njrat 0.7 Golden By Hassan Amiri
HacKed
0.tcp.eu.ngrok.io:18863
Windows Update
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reg_key
Windows Update
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splitter
|Hassan|
Signatures
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation b0ae1dd93add4f91d67c516307541ffbeb8cb2696671d18248992f2ebdfb10d8.exe -
Drops startup file 2 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Discord.exe Update.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Discord.exe Update.exe -
Executes dropped EXE 3 IoCs
pid Process 2212 Update.exe 3940 Server.exe 1816 Server.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Windows\\Update.exe\" .." Update.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Windows\\Update.exe\" .." Update.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
flow ioc 20 0.tcp.eu.ngrok.io 64 0.tcp.eu.ngrok.io 71 0.tcp.eu.ngrok.io -
Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\Update.exe b0ae1dd93add4f91d67c516307541ffbeb8cb2696671d18248992f2ebdfb10d8.exe File opened for modification C:\Windows\Update.exe Update.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4560 schtasks.exe -
Suspicious behavior: GetForegroundWindowSpam 2 IoCs
pid Process 540 b0ae1dd93add4f91d67c516307541ffbeb8cb2696671d18248992f2ebdfb10d8.exe 2212 Update.exe -
Suspicious use of AdjustPrivilegeToken 33 IoCs
description pid Process Token: SeDebugPrivilege 2212 Update.exe Token: 33 2212 Update.exe Token: SeIncBasePriorityPrivilege 2212 Update.exe Token: 33 2212 Update.exe Token: SeIncBasePriorityPrivilege 2212 Update.exe Token: 33 2212 Update.exe Token: SeIncBasePriorityPrivilege 2212 Update.exe Token: 33 2212 Update.exe Token: SeIncBasePriorityPrivilege 2212 Update.exe Token: 33 2212 Update.exe Token: SeIncBasePriorityPrivilege 2212 Update.exe Token: 33 2212 Update.exe Token: SeIncBasePriorityPrivilege 2212 Update.exe Token: 33 2212 Update.exe Token: SeIncBasePriorityPrivilege 2212 Update.exe Token: 33 2212 Update.exe Token: SeIncBasePriorityPrivilege 2212 Update.exe Token: 33 2212 Update.exe Token: SeIncBasePriorityPrivilege 2212 Update.exe Token: 33 2212 Update.exe Token: SeIncBasePriorityPrivilege 2212 Update.exe Token: 33 2212 Update.exe Token: SeIncBasePriorityPrivilege 2212 Update.exe Token: 33 2212 Update.exe Token: SeIncBasePriorityPrivilege 2212 Update.exe Token: 33 2212 Update.exe Token: SeIncBasePriorityPrivilege 2212 Update.exe Token: 33 2212 Update.exe Token: SeIncBasePriorityPrivilege 2212 Update.exe Token: 33 2212 Update.exe Token: SeIncBasePriorityPrivilege 2212 Update.exe Token: 33 2212 Update.exe Token: SeIncBasePriorityPrivilege 2212 Update.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 540 wrote to memory of 2212 540 b0ae1dd93add4f91d67c516307541ffbeb8cb2696671d18248992f2ebdfb10d8.exe 87 PID 540 wrote to memory of 2212 540 b0ae1dd93add4f91d67c516307541ffbeb8cb2696671d18248992f2ebdfb10d8.exe 87 PID 2212 wrote to memory of 4560 2212 Update.exe 92 PID 2212 wrote to memory of 4560 2212 Update.exe 92 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\b0ae1dd93add4f91d67c516307541ffbeb8cb2696671d18248992f2ebdfb10d8.exe"C:\Users\Admin\AppData\Local\Temp\b0ae1dd93add4f91d67c516307541ffbeb8cb2696671d18248992f2ebdfb10d8.exe"1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:540 -
C:\Windows\Update.exe"C:\Windows\Update.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2212 -
C:\Windows\SYSTEM32\schtasks.exeschtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\Admin\AppData\Local\Temp/Server.exe3⤵
- Scheduled Task/Job: Scheduled Task
PID:4560
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C:\Users\Admin\AppData\Local\Temp\Server.exeC:\Users\Admin\AppData\Local\Temp/Server.exe1⤵
- Executes dropped EXE
PID:3940
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C:\Users\Admin\AppData\Local\Temp\Server.exeC:\Users\Admin\AppData\Local\Temp/Server.exe1⤵
- Executes dropped EXE
PID:1816
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD5a8a147915e3a996fdbe10b3a3f1e1bb2
SHA1abc564c1be468d57e700913e7b6cf8f62d421263
SHA2568b96a8557deea66696837af011843d6a82451ba57c8f9b5a2726a70818d6fc7e
SHA51217b42f17ef60a9f625703172763f692e5ed2ca93564a97853dfa72bb0ac6305ef3267aea0b205938e3aa8eac10156d9d4f322b30d0329d92d647bcec6372731c
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Filesize
25KB
MD50958b133909fd7e905bfdf6d07864afa
SHA170c2bbe1328cde44369a2468846acf221083f858
SHA256b0ae1dd93add4f91d67c516307541ffbeb8cb2696671d18248992f2ebdfb10d8
SHA512377e31e99476fd8fa5922ea04928539c943832919564526ec030cbb8ea91112a566d996462da655aab1b654c6123c7c7942b48e521c5864c1955981ecfaa6064