njrat | bcaed85335595e6774d3787aec232b7468c68095f0de5a14e5f7364b6ca2cf7e

General

Target

424f837c55e7216646a63f6bbbbba766ed7521273ddfce6edad4b6335bf7a36e.exe
Size

23KB
MD5

043e344c6cc9477cbcfc0a483b1ca568
SHA1

52c4391b1a91c828823107cdf2db92e7142073d6
SHA256

424f837c55e7216646a63f6bbbbba766ed7521273ddfce6edad4b6335bf7a36e
SHA512

a705ac4259f754bea7ee73397fd1e1fc131c7d74065048020f520f63120ff1fee1355b6abfea645fd1b4d4aef8ab6da6ab0ad10346854d93463672e72ff032a5
SSDEEP

384:LMK6b2GZsx/Yr1+liORH1kcPFQ6Lg9gSOYRr9mRvR6JZlbw8hqIusZzZWe:Eb9glF51LRpcnuq

Score

10^/10

njrat plug-in evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

plug-in

C2

0.tcp.ap.ngrok.io:10881

Mutex

6ca646ee7571a205268803e929e9d247

Attributes

reg_key
6ca646ee7571a205268803e929e9d247
splitter
|'|'|

Signatures

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

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
4748	netsh.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-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	424f837c55e7216646a63f6bbbbba766ed7521273ddfce6edad4b6335bf7a36e.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6ca646ee7571a205268803e929e9d247.exe	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6ca646ee7571a205268803e929e9d247.exe	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4764	svchost.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\6ca646ee7571a205268803e929e9d247 = "\"C:\\Windows\\svchost.exe\" .."	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\6ca646ee7571a205268803e929e9d247 = "\"C:\\Windows\\svchost.exe\" .."	svchost.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\svchost.exe	424f837c55e7216646a63f6bbbbba766ed7521273ddfce6edad4b6335bf7a36e.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	4764	svchost.exe
Token: 33	4764	svchost.exe
Token: SeIncBasePriorityPrivilege	4764	svchost.exe
Token: 33	4764	svchost.exe
Token: SeIncBasePriorityPrivilege	4764	svchost.exe
Token: 33	4764	svchost.exe
Token: SeIncBasePriorityPrivilege	4764	svchost.exe
Token: 33	4764	svchost.exe
Token: SeIncBasePriorityPrivilege	4764	svchost.exe
Token: 33	4764	svchost.exe
Token: SeIncBasePriorityPrivilege	4764	svchost.exe
Token: 33	4764	svchost.exe
Token: SeIncBasePriorityPrivilege	4764	svchost.exe
Token: 33	4764	svchost.exe
Token: SeIncBasePriorityPrivilege	4764	svchost.exe
Token: 33	4764	svchost.exe
Token: SeIncBasePriorityPrivilege	4764	svchost.exe
Token: 33	4764	svchost.exe
Token: SeIncBasePriorityPrivilege	4764	svchost.exe
Token: 33	4764	svchost.exe
Token: SeIncBasePriorityPrivilege	4764	svchost.exe
Token: 33	4764	svchost.exe
Token: SeIncBasePriorityPrivilege	4764	svchost.exe
Token: 33	4764	svchost.exe
Token: SeIncBasePriorityPrivilege	4764	svchost.exe
Token: 33	4764	svchost.exe
Token: SeIncBasePriorityPrivilege	4764	svchost.exe
Token: 33	4764	svchost.exe
Token: SeIncBasePriorityPrivilege	4764	svchost.exe
Token: 33	4764	svchost.exe
Token: SeIncBasePriorityPrivilege	4764	svchost.exe
Token: 33	4764	svchost.exe
Token: SeIncBasePriorityPrivilege	4764	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3516 wrote to memory of 4764	3516	424f837c55e7216646a63f6bbbbba766ed7521273ddfce6edad4b6335bf7a36e.exe	84
PID 3516 wrote to memory of 4764	3516	424f837c55e7216646a63f6bbbbba766ed7521273ddfce6edad4b6335bf7a36e.exe	84
PID 3516 wrote to memory of 4764	3516	424f837c55e7216646a63f6bbbbba766ed7521273ddfce6edad4b6335bf7a36e.exe	84
PID 4764 wrote to memory of 4748	4764	svchost.exe	85
PID 4764 wrote to memory of 4748	4764	svchost.exe	85
PID 4764 wrote to memory of 4748	4764	svchost.exe	85

C:\Users\Admin\AppData\Local\Temp\424f837c55e7216646a63f6bbbbba766ed7521273ddfce6edad4b6335bf7a36e.exe
"C:\Users\Admin\AppData\Local\Temp\424f837c55e7216646a63f6bbbbba766ed7521273ddfce6edad4b6335bf7a36e.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3516
- C:\Windows\svchost.exe
  "C:\Windows\svchost.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4764
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Windows\svchost.exe" "svchost.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:4748

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

Web Service

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\svchost.exe

Filesize
23KB

MD5
043e344c6cc9477cbcfc0a483b1ca568

SHA1
52c4391b1a91c828823107cdf2db92e7142073d6

SHA256
424f837c55e7216646a63f6bbbbba766ed7521273ddfce6edad4b6335bf7a36e

SHA512
a705ac4259f754bea7ee73397fd1e1fc131c7d74065048020f520f63120ff1fee1355b6abfea645fd1b4d4aef8ab6da6ab0ad10346854d93463672e72ff032a5

Download Submit
C:\Windows\svchost.exe

Filesize
23KB

MD5
043e344c6cc9477cbcfc0a483b1ca568

SHA1
52c4391b1a91c828823107cdf2db92e7142073d6

SHA256
424f837c55e7216646a63f6bbbbba766ed7521273ddfce6edad4b6335bf7a36e

SHA512
a705ac4259f754bea7ee73397fd1e1fc131c7d74065048020f520f63120ff1fee1355b6abfea645fd1b4d4aef8ab6da6ab0ad10346854d93463672e72ff032a5

Download Submit
C:\Windows\svchost.exe

Filesize
23KB

MD5
043e344c6cc9477cbcfc0a483b1ca568

SHA1
52c4391b1a91c828823107cdf2db92e7142073d6

SHA256
424f837c55e7216646a63f6bbbbba766ed7521273ddfce6edad4b6335bf7a36e

SHA512
a705ac4259f754bea7ee73397fd1e1fc131c7d74065048020f520f63120ff1fee1355b6abfea645fd1b4d4aef8ab6da6ab0ad10346854d93463672e72ff032a5

Download Submit
memory/3516-133-0x0000000001300000-0x0000000001310000-memory.dmp

Filesize
64KB

Download

Analysis

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