njrat | 8525d0bc1e38bb74d592de9be2615da94ec0b81e611b0e456b3a51c40ab5baa3

Analysis

max time kernel
150s
max time network
152s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
16/05/2023, 23:11

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General

Target
c460cc5e08dc4af7091bde8d32458646.exe
Size 336KB
Sample230516-2586msch97
SHA256 8525d0bc1e38bb74d592de9be2615da94ec0b81e611b0e456b3a51c40ab5baa3
MD5 c460cc5e08dc4af7091bde8d32458646
SHA1 f9c591e5e8b8806b682302e1231ba1f95c712b92
SHA512 05e5c28d5dbecc27bedffcb7af93185f90a74098c89fc55daebd5c8841f8ee5f903baab9bbce694b4dd5d2dd399463867b608320d56393f7c052cfabb238fd99
SSDEEP 6144:ygZiAEAO0sByNsAal3gVAWgS7/OhwjMT+tkwsN/4:ygZXEAO/BUdG3gVdt7K9T+tkwq4
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

njrat skyf evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

SkyF

4.tcp.eu.ngrok.io:18541

Mutex

23b1abca6d5778c7b565b54cf98e9cd1

Attributes

reg_key
23b1abca6d5778c7b565b54cf98e9cd1
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
1448	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\23b1abca6d5778c7b565b54cf98e9cd1.exe	Dl.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\23b1abca6d5778c7b565b54cf98e9cd1.exe	Dl.exe

Executes dropped EXE 2 IoCs

pid	Process
1740	NeverBind.exe
812	Dl.exe

Loads dropped DLL 4 IoCs

pid	Process
1696	c460cc5e08dc4af7091bde8d32458646.exe
1696	c460cc5e08dc4af7091bde8d32458646.exe
1696	c460cc5e08dc4af7091bde8d32458646.exe
1740	NeverBind.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-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Windows\CurrentVersion\Run\23b1abca6d5778c7b565b54cf98e9cd1 = "\"C:\\Users\\Admin\\AppData\\Roaming\\Dl.exe\" .."	Dl.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\23b1abca6d5778c7b565b54cf98e9cd1 = "\"C:\\Users\\Admin\\AppData\\Roaming\\Dl.exe\" .."	Dl.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Drops autorun.inf file 1 TTPs 3 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

description	ioc	Process
File created	C:\autorun.inf	Dl.exe
File opened for modification	C:\autorun.inf	Dl.exe
File created	D:\autorun.inf	Dl.exe

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
548	taskkill.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe
812	Dl.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
812	Dl.exe

Suspicious use of AdjustPrivilegeToken 22 IoCs

description	pid	Process
Token: SeDebugPrivilege	812	Dl.exe
Token: SeDebugPrivilege	548	taskkill.exe
Token: 33	812	Dl.exe
Token: SeIncBasePriorityPrivilege	812	Dl.exe
Token: 33	812	Dl.exe
Token: SeIncBasePriorityPrivilege	812	Dl.exe
Token: 33	812	Dl.exe
Token: SeIncBasePriorityPrivilege	812	Dl.exe
Token: 33	812	Dl.exe
Token: SeIncBasePriorityPrivilege	812	Dl.exe
Token: 33	812	Dl.exe
Token: SeIncBasePriorityPrivilege	812	Dl.exe
Token: 33	812	Dl.exe
Token: SeIncBasePriorityPrivilege	812	Dl.exe
Token: 33	812	Dl.exe
Token: SeIncBasePriorityPrivilege	812	Dl.exe
Token: 33	812	Dl.exe
Token: SeIncBasePriorityPrivilege	812	Dl.exe
Token: 33	812	Dl.exe
Token: SeIncBasePriorityPrivilege	812	Dl.exe
Token: 33	812	Dl.exe
Token: SeIncBasePriorityPrivilege	812	Dl.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1696 wrote to memory of 1740	1696	c460cc5e08dc4af7091bde8d32458646.exe	26
PID 1696 wrote to memory of 1740	1696	c460cc5e08dc4af7091bde8d32458646.exe	26
PID 1696 wrote to memory of 1740	1696	c460cc5e08dc4af7091bde8d32458646.exe	26
PID 1696 wrote to memory of 1740	1696	c460cc5e08dc4af7091bde8d32458646.exe	26
PID 1740 wrote to memory of 812	1740	NeverBind.exe	27
PID 1740 wrote to memory of 812	1740	NeverBind.exe	27
PID 1740 wrote to memory of 812	1740	NeverBind.exe	27
PID 1740 wrote to memory of 812	1740	NeverBind.exe	27
PID 812 wrote to memory of 1448	812	Dl.exe	28
PID 812 wrote to memory of 1448	812	Dl.exe	28
PID 812 wrote to memory of 1448	812	Dl.exe	28
PID 812 wrote to memory of 1448	812	Dl.exe	28
PID 812 wrote to memory of 548	812	Dl.exe	30
PID 812 wrote to memory of 548	812	Dl.exe	30
PID 812 wrote to memory of 548	812	Dl.exe	30
PID 812 wrote to memory of 548	812	Dl.exe	30

C:\Users\Admin\AppData\Local\Temp\c460cc5e08dc4af7091bde8d32458646.exe
"C:\Users\Admin\AppData\Local\Temp\c460cc5e08dc4af7091bde8d32458646.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1696
- C:\Users\Admin\AppData\Local\Temp\NeverBind.exe
  "C:\Users\Admin\AppData\Local\Temp\NeverBind.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1740
- - C:\Users\Admin\AppData\Roaming\Dl.exe
    "C:\Users\Admin\AppData\Roaming\Dl.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Adds Run key to start application
    - Drops autorun.inf file
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:812
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Dl.exe" "Dl.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      PID:1448
  - - C:\Windows\SysWOW64\taskkill.exe
      taskkill /F /IM Exsample.exe
      4⤵
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:548

Network

MITRE ATT&CK Enterprise v6

Initial Access

Replication Through Removable Media

T1091

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Web Service

T1102

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Replication Through Removable Media

T1091

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

NeverBind.exe

Path C:\Users\Admin\AppData\Local\Temp\NeverBind.exe
Size 37KB
SHA256 c6d98780a6d2ea326eb19eaf1e92a2eccfcc3bc949b466ab35bbad4cb25a50e8
MD5 78aede0fbcb5a5d7ad6f3cc432bcdbaf
SHA1 c3f8193af197c884c8b22c2cb93add9a77b68948
SHA512 e0feb2636f1fa5d26b30169c0134b6c1f0f012ac7e08ca776750ea165862f4eb21c08d08868d725d5d85c73844d474c3136f686c638d7b367c0c3c7256cad7f2
SSDEEP 384:bOJTgiG1CPZfursvO6yszi7oPJoTnuG6rAF+rMRTyN/0L+EcoinblneHQM3epzX9:KJ/5Wpszi7o2Tu5rM+rMRa8Nu8gt
MD5 SHA1 SHA512 SSDEEP

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NeverBind.exe

Path C:\Users\Admin\AppData\Local\Temp\NeverBind.exe
Size 37KB
SHA256 c6d98780a6d2ea326eb19eaf1e92a2eccfcc3bc949b466ab35bbad4cb25a50e8
MD5 78aede0fbcb5a5d7ad6f3cc432bcdbaf
SHA1 c3f8193af197c884c8b22c2cb93add9a77b68948
SHA512 e0feb2636f1fa5d26b30169c0134b6c1f0f012ac7e08ca776750ea165862f4eb21c08d08868d725d5d85c73844d474c3136f686c638d7b367c0c3c7256cad7f2
SSDEEP 384:bOJTgiG1CPZfursvO6yszi7oPJoTnuG6rAF+rMRTyN/0L+EcoinblneHQM3epzX9:KJ/5Wpszi7o2Tu5rM+rMRa8Nu8gt
MD5 SHA1 SHA512 SSDEEP

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NeverBind.exe

Path C:\Users\Admin\AppData\Local\Temp\NeverBind.exe
Size 37KB
SHA256 c6d98780a6d2ea326eb19eaf1e92a2eccfcc3bc949b466ab35bbad4cb25a50e8
MD5 78aede0fbcb5a5d7ad6f3cc432bcdbaf
SHA1 c3f8193af197c884c8b22c2cb93add9a77b68948
SHA512 e0feb2636f1fa5d26b30169c0134b6c1f0f012ac7e08ca776750ea165862f4eb21c08d08868d725d5d85c73844d474c3136f686c638d7b367c0c3c7256cad7f2
SSDEEP 384:bOJTgiG1CPZfursvO6yszi7oPJoTnuG6rAF+rMRTyN/0L+EcoinblneHQM3epzX9:KJ/5Wpszi7o2Tu5rM+rMRa8Nu8gt
MD5 SHA1 SHA512 SSDEEP

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Dl.exe

Path C:\Users\Admin\AppData\Roaming\Dl.exe
Size 37KB
SHA256 c6d98780a6d2ea326eb19eaf1e92a2eccfcc3bc949b466ab35bbad4cb25a50e8
MD5 78aede0fbcb5a5d7ad6f3cc432bcdbaf
SHA1 c3f8193af197c884c8b22c2cb93add9a77b68948
SHA512 e0feb2636f1fa5d26b30169c0134b6c1f0f012ac7e08ca776750ea165862f4eb21c08d08868d725d5d85c73844d474c3136f686c638d7b367c0c3c7256cad7f2
SSDEEP 384:bOJTgiG1CPZfursvO6yszi7oPJoTnuG6rAF+rMRTyN/0L+EcoinblneHQM3epzX9:KJ/5Wpszi7o2Tu5rM+rMRa8Nu8gt
MD5 SHA1 SHA512 SSDEEP

Submit Download

Dl.exe

Path C:\Users\Admin\AppData\Roaming\Dl.exe
Size 37KB
SHA256 c6d98780a6d2ea326eb19eaf1e92a2eccfcc3bc949b466ab35bbad4cb25a50e8
MD5 78aede0fbcb5a5d7ad6f3cc432bcdbaf
SHA1 c3f8193af197c884c8b22c2cb93add9a77b68948
SHA512 e0feb2636f1fa5d26b30169c0134b6c1f0f012ac7e08ca776750ea165862f4eb21c08d08868d725d5d85c73844d474c3136f686c638d7b367c0c3c7256cad7f2
SSDEEP 384:bOJTgiG1CPZfursvO6yszi7oPJoTnuG6rAF+rMRTyN/0L+EcoinblneHQM3epzX9:KJ/5Wpszi7o2Tu5rM+rMRa8Nu8gt
MD5 SHA1 SHA512 SSDEEP

Submit Download

NeverBind.exe

Path \Users\Admin\AppData\Local\Temp\NeverBind.exe
Size 37KB
SHA256 c6d98780a6d2ea326eb19eaf1e92a2eccfcc3bc949b466ab35bbad4cb25a50e8
MD5 78aede0fbcb5a5d7ad6f3cc432bcdbaf
SHA1 c3f8193af197c884c8b22c2cb93add9a77b68948
SHA512 e0feb2636f1fa5d26b30169c0134b6c1f0f012ac7e08ca776750ea165862f4eb21c08d08868d725d5d85c73844d474c3136f686c638d7b367c0c3c7256cad7f2
SSDEEP 384:bOJTgiG1CPZfursvO6yszi7oPJoTnuG6rAF+rMRTyN/0L+EcoinblneHQM3epzX9:KJ/5Wpszi7o2Tu5rM+rMRa8Nu8gt
MD5 SHA1 SHA512 SSDEEP

Submit Download

NeverBind.exe

Path \Users\Admin\AppData\Local\Temp\NeverBind.exe
Size 37KB
SHA256 c6d98780a6d2ea326eb19eaf1e92a2eccfcc3bc949b466ab35bbad4cb25a50e8
MD5 78aede0fbcb5a5d7ad6f3cc432bcdbaf
SHA1 c3f8193af197c884c8b22c2cb93add9a77b68948
SHA512 e0feb2636f1fa5d26b30169c0134b6c1f0f012ac7e08ca776750ea165862f4eb21c08d08868d725d5d85c73844d474c3136f686c638d7b367c0c3c7256cad7f2
SSDEEP 384:bOJTgiG1CPZfursvO6yszi7oPJoTnuG6rAF+rMRTyN/0L+EcoinblneHQM3epzX9:KJ/5Wpszi7o2Tu5rM+rMRa8Nu8gt
MD5 SHA1 SHA512 SSDEEP

Submit Download

NeverBind.exe

Path \Users\Admin\AppData\Local\Temp\NeverBind.exe
Size 37KB
SHA256 c6d98780a6d2ea326eb19eaf1e92a2eccfcc3bc949b466ab35bbad4cb25a50e8
MD5 78aede0fbcb5a5d7ad6f3cc432bcdbaf
SHA1 c3f8193af197c884c8b22c2cb93add9a77b68948
SHA512 e0feb2636f1fa5d26b30169c0134b6c1f0f012ac7e08ca776750ea165862f4eb21c08d08868d725d5d85c73844d474c3136f686c638d7b367c0c3c7256cad7f2
SSDEEP 384:bOJTgiG1CPZfursvO6yszi7oPJoTnuG6rAF+rMRTyN/0L+EcoinblneHQM3epzX9:KJ/5Wpszi7o2Tu5rM+rMRa8Nu8gt
MD5 SHA1 SHA512 SSDEEP

Submit Download

Dl.exe

Path \Users\Admin\AppData\Roaming\Dl.exe
Size 37KB
SHA256 c6d98780a6d2ea326eb19eaf1e92a2eccfcc3bc949b466ab35bbad4cb25a50e8
MD5 78aede0fbcb5a5d7ad6f3cc432bcdbaf
SHA1 c3f8193af197c884c8b22c2cb93add9a77b68948
SHA512 e0feb2636f1fa5d26b30169c0134b6c1f0f012ac7e08ca776750ea165862f4eb21c08d08868d725d5d85c73844d474c3136f686c638d7b367c0c3c7256cad7f2
SSDEEP 384:bOJTgiG1CPZfursvO6yszi7oPJoTnuG6rAF+rMRTyN/0L+EcoinblneHQM3epzX9:KJ/5Wpszi7o2Tu5rM+rMRa8Nu8gt
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/812-79-0x00000000005C0000-0x0000000000600000-memory.dmp

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memory/812-85-0x00000000005C0000-0x0000000000600000-memory.dmp

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memory/1696-71-0x00000000008F0000-0x00000000008F1000-memory.dmp

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memory/1740-70-0x00000000004B0000-0x00000000004F0000-memory.dmp

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