Analysis
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max time kernel
149s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
02-12-2024 07:15
Static task
static1
Behavioral task
behavioral1
Sample
7bb924304ad92bca823a2552d44cb54d9c8a4a92dba535d56f715720fcc92013.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
7bb924304ad92bca823a2552d44cb54d9c8a4a92dba535d56f715720fcc92013.exe
Resource
win10v2004-20241007-en
General
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Target
7bb924304ad92bca823a2552d44cb54d9c8a4a92dba535d56f715720fcc92013.exe
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Size
100KB
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MD5
1ad9fb5ac8252ec450cb4f70111fb6fe
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SHA1
70ac8b252e67f0363c7f64e780018a45cf7d24ed
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SHA256
7bb924304ad92bca823a2552d44cb54d9c8a4a92dba535d56f715720fcc92013
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SHA512
df40c71d839d5b1a73b047d5cad2b3b417e755554ddb8dd5b3ba634f5ea27c1ed9ed05262cde4b63516ed32a94ed1ca129dfdfdc777e4f7e80151c0c5947be19
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SSDEEP
1536:JMoIfhO5PNZ4BkSQB68QJRlrNw+ZnIwk0+Be4X2EWpD7oi1VO+/t6Fk:+o2GNZMI8Rl5wyIwk79/sl8Fk
Malware Config
Extracted
njrat
0.7d
VICTIME2014b
crazymaha.zapto.org:8181
73fc908b8a1feca480a20b452ef82fcc
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reg_key
73fc908b8a1feca480a20b452ef82fcc
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splitter
|'|'|
Signatures
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Njrat family
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 2968 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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation 7bb924304ad92bca823a2552d44cb54d9c8a4a92dba535d56f715720fcc92013.exe -
Executes dropped EXE 1 IoCs
pid Process 1944 taskmgr.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\73fc908b8a1feca480a20b452ef82fcc = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\taskmgr.exe\" .." taskmgr.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\73fc908b8a1feca480a20b452ef82fcc = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\taskmgr.exe\" .." taskmgr.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs
Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh netsh.exe Key queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh netsh.exe Key value enumerated \REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh netsh.exe -
Suspicious use of AdjustPrivilegeToken 35 IoCs
description pid Process Token: SeDebugPrivilege 1944 taskmgr.exe Token: 33 1944 taskmgr.exe Token: SeIncBasePriorityPrivilege 1944 taskmgr.exe Token: 33 1944 taskmgr.exe Token: SeIncBasePriorityPrivilege 1944 taskmgr.exe Token: 33 1944 taskmgr.exe Token: SeIncBasePriorityPrivilege 1944 taskmgr.exe Token: 33 1944 taskmgr.exe Token: SeIncBasePriorityPrivilege 1944 taskmgr.exe Token: 33 1944 taskmgr.exe Token: SeIncBasePriorityPrivilege 1944 taskmgr.exe Token: 33 1944 taskmgr.exe Token: SeIncBasePriorityPrivilege 1944 taskmgr.exe Token: 33 1944 taskmgr.exe Token: SeIncBasePriorityPrivilege 1944 taskmgr.exe Token: 33 1944 taskmgr.exe Token: SeIncBasePriorityPrivilege 1944 taskmgr.exe Token: 33 1944 taskmgr.exe Token: SeIncBasePriorityPrivilege 1944 taskmgr.exe Token: 33 1944 taskmgr.exe Token: SeIncBasePriorityPrivilege 1944 taskmgr.exe Token: 33 1944 taskmgr.exe Token: SeIncBasePriorityPrivilege 1944 taskmgr.exe Token: 33 1944 taskmgr.exe Token: SeIncBasePriorityPrivilege 1944 taskmgr.exe Token: 33 1944 taskmgr.exe Token: SeIncBasePriorityPrivilege 1944 taskmgr.exe Token: 33 1944 taskmgr.exe Token: SeIncBasePriorityPrivilege 1944 taskmgr.exe Token: 33 1944 taskmgr.exe Token: SeIncBasePriorityPrivilege 1944 taskmgr.exe Token: 33 1944 taskmgr.exe Token: SeIncBasePriorityPrivilege 1944 taskmgr.exe Token: 33 1944 taskmgr.exe Token: SeIncBasePriorityPrivilege 1944 taskmgr.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 680 wrote to memory of 1944 680 7bb924304ad92bca823a2552d44cb54d9c8a4a92dba535d56f715720fcc92013.exe 86 PID 680 wrote to memory of 1944 680 7bb924304ad92bca823a2552d44cb54d9c8a4a92dba535d56f715720fcc92013.exe 86 PID 1944 wrote to memory of 2968 1944 taskmgr.exe 94 PID 1944 wrote to memory of 2968 1944 taskmgr.exe 94
Processes
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C:\Users\Admin\AppData\Local\Temp\7bb924304ad92bca823a2552d44cb54d9c8a4a92dba535d56f715720fcc92013.exe"C:\Users\Admin\AppData\Local\Temp\7bb924304ad92bca823a2552d44cb54d9c8a4a92dba535d56f715720fcc92013.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:680 -
C:\Users\Admin\AppData\Local\Temp\taskmgr.exe"C:\Users\Admin\AppData\Local\Temp\taskmgr.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1944 -
C:\Windows\SYSTEM32\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\taskmgr.exe" "taskmgr.exe" ENABLE3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
PID:2968
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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
1Event Triggered Execution
1Netsh Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Replay Monitor
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Downloads
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Filesize
100KB
MD51ad9fb5ac8252ec450cb4f70111fb6fe
SHA170ac8b252e67f0363c7f64e780018a45cf7d24ed
SHA2567bb924304ad92bca823a2552d44cb54d9c8a4a92dba535d56f715720fcc92013
SHA512df40c71d839d5b1a73b047d5cad2b3b417e755554ddb8dd5b3ba634f5ea27c1ed9ed05262cde4b63516ed32a94ed1ca129dfdfdc777e4f7e80151c0c5947be19