Resubmissions
26-02-2024 18:40
240226-xbebysdf4z 10Analysis
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max time kernel
149s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
26-02-2024 18:40
Behavioral task
behavioral1
Sample
a70f39e314acb6cea65107b7bcb78272.exe
Resource
win7-20240221-en
General
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Target
a70f39e314acb6cea65107b7bcb78272.exe
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Size
212KB
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MD5
a70f39e314acb6cea65107b7bcb78272
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SHA1
9cbf5beee63a2de1f1ee609bf6d6665a9f5985fd
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SHA256
9c50292bc37f90fb938b51c90ec031df46b35a1b0bb438fe92d6d312c615ec41
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SHA512
ed9803af67836e458b0cea03093a501bb73bfacc8522ebf8a5ca1a96810cd968789318c654552bbdf252e28097c54c08d41c3d765ee171866b2fc854a4be2996
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SSDEEP
3072:YJacj8v7wQ+ZGx7w8wjjP8I1IU8RjrzzvUWAOZjfKdLOYP:YJPgv7wJZ87wBjYI1IUwrIOZyxP
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 3128 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-1-5-21-3045580317-3728985860-206385570-1000\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 3192 test.exe 1352 Explorer.exe -
resource yara_rule behavioral2/memory/2644-0-0x0000000000400000-0x0000000000498000-memory.dmp upx behavioral2/memory/2644-22-0x0000000000400000-0x0000000000498000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\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 45 IoCs
pid Process 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe 1352 Explorer.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1352 Explorer.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 2644 wrote to memory of 3672 2644 a70f39e314acb6cea65107b7bcb78272.exe 87 PID 2644 wrote to memory of 3672 2644 a70f39e314acb6cea65107b7bcb78272.exe 87 PID 2644 wrote to memory of 3672 2644 a70f39e314acb6cea65107b7bcb78272.exe 87 PID 3672 wrote to memory of 3192 3672 cmd.exe 88 PID 3672 wrote to memory of 3192 3672 cmd.exe 88 PID 3672 wrote to memory of 3192 3672 cmd.exe 88 PID 3192 wrote to memory of 1352 3192 test.exe 89 PID 3192 wrote to memory of 1352 3192 test.exe 89 PID 3192 wrote to memory of 1352 3192 test.exe 89 PID 1352 wrote to memory of 3128 1352 Explorer.exe 91 PID 1352 wrote to memory of 3128 1352 Explorer.exe 91 PID 1352 wrote to memory of 3128 1352 Explorer.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\a70f39e314acb6cea65107b7bcb78272.exe"C:\Users\Admin\AppData\Local\Temp\a70f39e314acb6cea65107b7bcb78272.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2644 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c test.exe2⤵
- Suspicious use of WriteProcessMemory
PID:3672 -
C:\Users\Admin\AppData\Local\Temp\test.exetest.exe3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3192 -
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:1352 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Explorer.exe" "Explorer.exe" ENABLE5⤵
- Modifies Windows Firewall
PID:3128
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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
Loading Replay Monitor...
Downloads
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Filesize
29KB
MD5fc42513e45503d510fb011bbb309e51e
SHA1e9741466f6e68dadb9e874f12d5b62fe14693741
SHA256766240fd9026a04e4a7f20240f699133eef24a969e242afdd471ad0a179cefe3
SHA5120f2a88f96a8a47abe062ccca986d2b3d98310374629c9067b19dbfeb73f23ba411b3ca5ae3877684770fb2d25947305b42c38a913a329e6220de6cd5d539a8ca