Analysis
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max time kernel
152s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
27-02-2024 01:44
Behavioral task
behavioral1
Sample
a7e5f463382b52c236822e311a59bb2b.exe
Resource
win7-20240221-en
General
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Target
a7e5f463382b52c236822e311a59bb2b.exe
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Size
444KB
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MD5
a7e5f463382b52c236822e311a59bb2b
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SHA1
3ffc4f11573f858e3ff4c663576c6a36535c8078
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SHA256
82733477c5f9c6d503c68563a8f8ce782d00f46678a8965182c7603191b4c078
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SHA512
e128d58eb43524feea93b41e0a0d3a654bdee59e2664538cf0678aec69cc5675c461546954ba7baa4b197e7297816cfbcfacc603b8971a6afc55850a81bf11b1
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SSDEEP
3072:NJacj8v7wQ+ZGx7w8wjjP8I1IU8RjrzzvUWAOZjfKdLgY7:NJPgv7wJZ87wBjYI1IUwrIOZyf7
Malware Config
Extracted
njrat
0.6.4
Hacked
abdo95.ddns.net:1177
ed6e2bf930f6d35b3ac57c049d10ac2c
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reg_key
ed6e2bf930f6d35b3ac57c049d10ac2c
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splitter
|'|'|
Signatures
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 2812 netsh.exe -
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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation test.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ed6e2bf930f6d35b3ac57c049d10ac2c.exe Explorer.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ed6e2bf930f6d35b3ac57c049d10ac2c.exe Explorer.exe -
Executes dropped EXE 2 IoCs
pid Process 2788 test.exe 4388 Explorer.exe -
resource yara_rule behavioral2/memory/2160-0-0x0000000000400000-0x0000000000498000-memory.dmp upx behavioral2/memory/2160-8-0x0000000000400000-0x0000000000498000-memory.dmp upx behavioral2/memory/2160-23-0x0000000000400000-0x0000000000498000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ed6e2bf930f6d35b3ac57c049d10ac2c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Explorer.exe\" .." Explorer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ed6e2bf930f6d35b3ac57c049d10ac2c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Explorer.exe\" .." Explorer.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 42 IoCs
pid Process 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe 4388 Explorer.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4388 Explorer.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 2160 wrote to memory of 2076 2160 a7e5f463382b52c236822e311a59bb2b.exe 95 PID 2160 wrote to memory of 2076 2160 a7e5f463382b52c236822e311a59bb2b.exe 95 PID 2160 wrote to memory of 2076 2160 a7e5f463382b52c236822e311a59bb2b.exe 95 PID 2076 wrote to memory of 2788 2076 cmd.exe 96 PID 2076 wrote to memory of 2788 2076 cmd.exe 96 PID 2076 wrote to memory of 2788 2076 cmd.exe 96 PID 2788 wrote to memory of 4388 2788 test.exe 98 PID 2788 wrote to memory of 4388 2788 test.exe 98 PID 2788 wrote to memory of 4388 2788 test.exe 98 PID 4388 wrote to memory of 2812 4388 Explorer.exe 99 PID 4388 wrote to memory of 2812 4388 Explorer.exe 99 PID 4388 wrote to memory of 2812 4388 Explorer.exe 99
Processes
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C:\Users\Admin\AppData\Local\Temp\a7e5f463382b52c236822e311a59bb2b.exe"C:\Users\Admin\AppData\Local\Temp\a7e5f463382b52c236822e311a59bb2b.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2160 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c test.exe2⤵
- Suspicious use of WriteProcessMemory
PID:2076 -
C:\Users\Admin\AppData\Local\Temp\test.exetest.exe3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2788 -
C:\Users\Admin\AppData\Local\Temp\Explorer.exe"C:\Users\Admin\AppData\Local\Temp\Explorer.exe"4⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4388 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Explorer.exe" "Explorer.exe" ENABLE5⤵
- Modifies Windows Firewall
PID:2812
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3816 --field-trial-handle=2264,i,15001568551143786084,90255922961447677,262144 --variations-seed-version /prefetch:81⤵PID:1288
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Replay Monitor
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Downloads
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Filesize
29KB
MD5fc42513e45503d510fb011bbb309e51e
SHA1e9741466f6e68dadb9e874f12d5b62fe14693741
SHA256766240fd9026a04e4a7f20240f699133eef24a969e242afdd471ad0a179cefe3
SHA5120f2a88f96a8a47abe062ccca986d2b3d98310374629c9067b19dbfeb73f23ba411b3ca5ae3877684770fb2d25947305b42c38a913a329e6220de6cd5d539a8ca