njrat | 0a9d287a3539c979a8c215ca003ca35293c324644e2f2c4dc3a38b4c7f9fa143

General

Target

A81N2M36CINV0ICERECEIPT.exe
Size

679KB
MD5

ba79aabe98bf01d3f35359a9332be48f
SHA1

0dbca5bfa445fca16f31bddfe3be23b1a41a80c0
SHA256

0a9d287a3539c979a8c215ca003ca35293c324644e2f2c4dc3a38b4c7f9fa143
SHA512

ad16e94537e80d6a185c6be021eb3b459e204fcc424366d89b222849f60ba00478335a036e66c197609f9a77161b093f7240c7ef1d699ff842fd9289d6e828d3

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

1.9

Botnet

HacKed

Mutex

Microsoft.Exe

Attributes

reg_key
Microsoft.Exe

Signatures

Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

A81N2M36CINV0ICERECEIPT.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	A81N2M36CINV0ICERECEIPT.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	A81N2M36CINV0ICERECEIPT.exe

Drops startup file 2 IoCs

Processes:

RegAsm.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft.Exe	RegAsm.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft.Exe	RegAsm.exe

Windows security modification 2 TTPs 4 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

A81N2M36CINV0ICERECEIPT.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\Microsoft.NET\Framework\CADCDADBAEDEFBCBFCADB\svchost.exe = "0"	A81N2M36CINV0ICERECEIPT.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\A81N2M36CINV0ICERECEIPT.exe = "0"	A81N2M36CINV0ICERECEIPT.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths	A81N2M36CINV0ICERECEIPT.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions	A81N2M36CINV0ICERECEIPT.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

A81N2M36CINV0ICERECEIPT.exeRegAsm.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows\CurrentVersion\Run\BEABFBACFFDDAFBFBAEECFC = "C:\\Windows\\Microsoft.NET\\Framework\\CADCDADBAEDEFBCBFCADB\\svchost.exe"	A81N2M36CINV0ICERECEIPT.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\BEABFBACFFDDAFBFBAEECFC = "C:\\Windows\\Microsoft.NET\\Framework\\CADCDADBAEDEFBCBFCADB\\svchost.exe"	A81N2M36CINV0ICERECEIPT.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows\CurrentVersion\Run\Microsoft.Exe = "\"C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\RegAsm.exe\" .."	RegAsm.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Microsoft.Exe = "\"C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\RegAsm.exe\" .."	RegAsm.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

A81N2M36CINV0ICERECEIPT.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	A81N2M36CINV0ICERECEIPT.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	A81N2M36CINV0ICERECEIPT.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

A81N2M36CINV0ICERECEIPT.exe

description pid process target process

PID 1608 set thread context of 1500 1608 A81N2M36CINV0ICERECEIPT.exe RegAsm.exe

description	pid	process	target process
PID 1608 set thread context of 1500	1608	A81N2M36CINV0ICERECEIPT.exe	RegAsm.exe

Drops file in Windows directory 2 IoCs

Processes:

A81N2M36CINV0ICERECEIPT.exe

description	ioc	process
File created	C:\Windows\Microsoft.NET\Framework\CADCDADBAEDEFBCBFCADB\svchost.exe	A81N2M36CINV0ICERECEIPT.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework\CADCDADBAEDEFBCBFCADB	A81N2M36CINV0ICERECEIPT.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 11 IoCs

Processes:

A81N2M36CINV0ICERECEIPT.exepowershell.exepowershell.exepowershell.exe

pid	process
1608	A81N2M36CINV0ICERECEIPT.exe
1608	A81N2M36CINV0ICERECEIPT.exe
1608	A81N2M36CINV0ICERECEIPT.exe
1608	A81N2M36CINV0ICERECEIPT.exe
1608	A81N2M36CINV0ICERECEIPT.exe
1608	A81N2M36CINV0ICERECEIPT.exe
1248	powershell.exe
1460	powershell.exe
288	powershell.exe
1608	A81N2M36CINV0ICERECEIPT.exe
1608	A81N2M36CINV0ICERECEIPT.exe

Suspicious use of AdjustPrivilegeToken 15 IoCs

Processes:

A81N2M36CINV0ICERECEIPT.exepowershell.exepowershell.exepowershell.exeRegAsm.exe

description	pid	process
Token: SeDebugPrivilege	1608	A81N2M36CINV0ICERECEIPT.exe
Token: SeDebugPrivilege	1248	powershell.exe
Token: SeDebugPrivilege	1460	powershell.exe
Token: SeDebugPrivilege	288	powershell.exe
Token: SeDebugPrivilege	1500	RegAsm.exe
Token: 33	1500	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1500	RegAsm.exe
Token: 33	1500	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1500	RegAsm.exe
Token: 33	1500	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1500	RegAsm.exe
Token: 33	1500	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1500	RegAsm.exe
Token: 33	1500	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1500	RegAsm.exe

Suspicious use of WriteProcessMemory 28 IoCs

Processes:

A81N2M36CINV0ICERECEIPT.exeRegAsm.exe

description	pid	process	target process
PID 1608 wrote to memory of 1460	1608	A81N2M36CINV0ICERECEIPT.exe	powershell.exe
PID 1608 wrote to memory of 1460	1608	A81N2M36CINV0ICERECEIPT.exe	powershell.exe
PID 1608 wrote to memory of 1460	1608	A81N2M36CINV0ICERECEIPT.exe	powershell.exe
PID 1608 wrote to memory of 1460	1608	A81N2M36CINV0ICERECEIPT.exe	powershell.exe
PID 1608 wrote to memory of 288	1608	A81N2M36CINV0ICERECEIPT.exe	powershell.exe
PID 1608 wrote to memory of 288	1608	A81N2M36CINV0ICERECEIPT.exe	powershell.exe
PID 1608 wrote to memory of 288	1608	A81N2M36CINV0ICERECEIPT.exe	powershell.exe
PID 1608 wrote to memory of 288	1608	A81N2M36CINV0ICERECEIPT.exe	powershell.exe
PID 1608 wrote to memory of 1248	1608	A81N2M36CINV0ICERECEIPT.exe	powershell.exe
PID 1608 wrote to memory of 1248	1608	A81N2M36CINV0ICERECEIPT.exe	powershell.exe
PID 1608 wrote to memory of 1248	1608	A81N2M36CINV0ICERECEIPT.exe	powershell.exe
PID 1608 wrote to memory of 1248	1608	A81N2M36CINV0ICERECEIPT.exe	powershell.exe
PID 1608 wrote to memory of 1500	1608	A81N2M36CINV0ICERECEIPT.exe	RegAsm.exe
PID 1608 wrote to memory of 1500	1608	A81N2M36CINV0ICERECEIPT.exe	RegAsm.exe
PID 1608 wrote to memory of 1500	1608	A81N2M36CINV0ICERECEIPT.exe	RegAsm.exe
PID 1608 wrote to memory of 1500	1608	A81N2M36CINV0ICERECEIPT.exe	RegAsm.exe
PID 1608 wrote to memory of 1500	1608	A81N2M36CINV0ICERECEIPT.exe	RegAsm.exe
PID 1608 wrote to memory of 1500	1608	A81N2M36CINV0ICERECEIPT.exe	RegAsm.exe
PID 1608 wrote to memory of 1500	1608	A81N2M36CINV0ICERECEIPT.exe	RegAsm.exe
PID 1608 wrote to memory of 1500	1608	A81N2M36CINV0ICERECEIPT.exe	RegAsm.exe
PID 1608 wrote to memory of 1500	1608	A81N2M36CINV0ICERECEIPT.exe	RegAsm.exe
PID 1608 wrote to memory of 1500	1608	A81N2M36CINV0ICERECEIPT.exe	RegAsm.exe
PID 1608 wrote to memory of 1500	1608	A81N2M36CINV0ICERECEIPT.exe	RegAsm.exe
PID 1608 wrote to memory of 1500	1608	A81N2M36CINV0ICERECEIPT.exe	RegAsm.exe
PID 1500 wrote to memory of 1652	1500	RegAsm.exe	netsh.exe
PID 1500 wrote to memory of 1652	1500	RegAsm.exe	netsh.exe
PID 1500 wrote to memory of 1652	1500	RegAsm.exe	netsh.exe
PID 1500 wrote to memory of 1652	1500	RegAsm.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\A81N2M36CINV0ICERECEIPT.exe
"C:\Users\Admin\AppData\Local\Temp\A81N2M36CINV0ICERECEIPT.exe"
1⤵
- Checks BIOS information in registry
- Windows security modification
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1608
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Windows\Microsoft.NET\Framework\CADCDADBAEDEFBCBFCADB\svchost.exe" -Force
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1460
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Windows\Microsoft.NET\Framework\CADCDADBAEDEFBCBFCADB\svchost.exe" -Force
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:288
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\A81N2M36CINV0ICERECEIPT.exe" -Force
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1248
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1500
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe" "RegAsm.exe" ENABLE
    3⤵
    PID:1652

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Disabling Security Tools

Modify Registry

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

MD5
d4c93b8047c37799dd0b4b86192b7508

SHA1
2fd525563dc29128d351c861bbd675a34811c6a4

SHA256
662673c111a5f3fc252781b68529bc4eebb6b9146294945faf31a2766477e276

SHA512
c8495e085f31e6cfbc5a6612a7ff17cc33a71d91bb3e977e2bafe9d9bb71218dcb483f48587c931acd319ceb1f892f1dd14a1f2839759144c7fbee17cc7f6598

Download Submit
memory/288-83-0x0000000002570000-0x00000000031BA000-memory.dmp

Filesize
12.3MB

Download
memory/288-80-0x0000000002570000-0x00000000031BA000-memory.dmp

Filesize
12.3MB

Download
memory/288-60-0x0000000000000000-mapping.dmp

Download
memory/288-77-0x0000000002570000-0x00000000031BA000-memory.dmp

Filesize
12.3MB

Download
memory/1248-75-0x0000000002450000-0x0000000002451000-memory.dmp

Filesize
4KB

Download
memory/1248-81-0x0000000002452000-0x0000000002454000-memory.dmp

Filesize
8KB

Download
memory/1248-79-0x0000000002451000-0x0000000002452000-memory.dmp

Filesize
4KB

Download
memory/1248-61-0x0000000000000000-mapping.dmp

Download
memory/1460-62-0x0000000075AB1000-0x0000000075AB3000-memory.dmp

Filesize
8KB

Download
memory/1460-76-0x00000000021E0000-0x00000000021E1000-memory.dmp

Filesize
4KB

Download
memory/1460-82-0x00000000021E2000-0x00000000021E4000-memory.dmp

Filesize
8KB

Download
memory/1460-59-0x0000000000000000-mapping.dmp

Download
memory/1460-78-0x00000000021E1000-0x00000000021E2000-memory.dmp

Filesize
4KB

Download
memory/1500-66-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1500-69-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1500-74-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1500-71-0x000000000040BBF2-mapping.dmp

Download
memory/1500-67-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1500-86-0x0000000000BE0000-0x0000000000BE1000-memory.dmp

Filesize
4KB

Download
memory/1500-70-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1500-73-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1500-68-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1608-57-0x0000000000BE0000-0x0000000000C82000-memory.dmp

Filesize
648KB

Download
memory/1608-58-0x0000000000910000-0x000000000092A000-memory.dmp

Filesize
104KB

Download
memory/1608-56-0x0000000000A30000-0x0000000000A31000-memory.dmp

Filesize
4KB

Download
memory/1608-55-0x0000000000FC0000-0x0000000001070000-memory.dmp

Filesize
704KB

Download
memory/1652-84-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads