njrat | 29c2ba9035cdd613e5cf38e3441a3be91e39c724707659a6473b0e4e24e4bb38

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20220414-en
submitted
24/04/2022, 17:11

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General

Target
b34b260c4e200213ffb77f02cb4471eb.exe
Size 43KB
Sample220424-vp83daeabl
SHA256 29c2ba9035cdd613e5cf38e3441a3be91e39c724707659a6473b0e4e24e4bb38
MD5 b34b260c4e200213ffb77f02cb4471eb
SHA1 526ed79466ab1c921aa41f8e699fe24021d57d75
SHA512 d740b113c562cc8f7b792c581a4eabbb0fe896c2b98f34608e717b2c3ec8ac980985a5dd4da3b1f08ae9991e2e75973d4a478915bbd28420c737ab0ab8e2130a
MD5 SHA1 SHA512

Score

10^/10

njrat puff persistence suricata trojan

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

PUFF

8.tcp.ngrok.io:17196

Mutex

Windows Update

Attributes

reg_key
Windows Update
splitter
|Hassan|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)
suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)
suricata

Executes dropped EXE 3 IoCs

pid	Process
1268	Dllhost.exe
1172	Server.exe
1672	Server.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe	Dllhost.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe	Dllhost.exe

Loads dropped DLL 1 IoCs

pid	Process
2016	b34b260c4e200213ffb77f02cb4471eb.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-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Dllhost.exe\" .."	Dllhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Dllhost.exe\" .."	Dllhost.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1452	schtasks.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1268	Dllhost.exe

Suspicious use of AdjustPrivilegeToken 19 IoCs

description	pid	Process
Token: SeDebugPrivilege	1268	Dllhost.exe
Token: 33	1268	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1268	Dllhost.exe
Token: 33	1268	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1268	Dllhost.exe
Token: 33	1268	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1268	Dllhost.exe
Token: 33	1268	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1268	Dllhost.exe
Token: 33	1268	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1268	Dllhost.exe
Token: 33	1268	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1268	Dllhost.exe
Token: 33	1268	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1268	Dllhost.exe
Token: 33	1268	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1268	Dllhost.exe
Token: 33	1268	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1268	Dllhost.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2016 wrote to memory of 1268	2016	b34b260c4e200213ffb77f02cb4471eb.exe	26
PID 2016 wrote to memory of 1268	2016	b34b260c4e200213ffb77f02cb4471eb.exe	26
PID 2016 wrote to memory of 1268	2016	b34b260c4e200213ffb77f02cb4471eb.exe	26
PID 2016 wrote to memory of 1268	2016	b34b260c4e200213ffb77f02cb4471eb.exe	26
PID 1268 wrote to memory of 1452	1268	Dllhost.exe	27
PID 1268 wrote to memory of 1452	1268	Dllhost.exe	27
PID 1268 wrote to memory of 1452	1268	Dllhost.exe	27
PID 1268 wrote to memory of 1452	1268	Dllhost.exe	27
PID 1796 wrote to memory of 1172	1796	taskeng.exe	31
PID 1796 wrote to memory of 1172	1796	taskeng.exe	31
PID 1796 wrote to memory of 1172	1796	taskeng.exe	31
PID 1796 wrote to memory of 1172	1796	taskeng.exe	31
PID 1796 wrote to memory of 1672	1796	taskeng.exe	32
PID 1796 wrote to memory of 1672	1796	taskeng.exe	32
PID 1796 wrote to memory of 1672	1796	taskeng.exe	32
PID 1796 wrote to memory of 1672	1796	taskeng.exe	32

C:\Users\Admin\AppData\Local\Temp\b34b260c4e200213ffb77f02cb4471eb.exe
"C:\Users\Admin\AppData\Local\Temp\b34b260c4e200213ffb77f02cb4471eb.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2016
- C:\Users\Admin\AppData\Local\Temp\Dllhost.exe
  "C:\Users\Admin\AppData\Local\Temp\Dllhost.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1268
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\Admin\AppData\Local\Temp/Server.exe
    3⤵
    - Creates scheduled task(s)
    PID:1452

C:\Windows\system32\taskeng.exe
taskeng.exe {FD5CFC6A-8BF6-4DF3-AE02-9BAC27D7B3C8} S-1-5-21-790309383-526510583-3802439154-1000:TVHJCWMH\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1796
- C:\Users\Admin\AppData\Local\Temp\Server.exe
  C:\Users\Admin\AppData\Local\Temp/Server.exe
  2⤵
  - Executes dropped EXE
  PID:1172
- C:\Users\Admin\AppData\Local\Temp\Server.exe
  C:\Users\Admin\AppData\Local\Temp/Server.exe
  2⤵
  - Executes dropped EXE
  PID:1672

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

Dllhost.exe

Path C:\Users\Admin\AppData\Local\Temp\Dllhost.exe
Size 43KB
SHA256 29c2ba9035cdd613e5cf38e3441a3be91e39c724707659a6473b0e4e24e4bb38
MD5 b34b260c4e200213ffb77f02cb4471eb
SHA1 526ed79466ab1c921aa41f8e699fe24021d57d75
SHA512 d740b113c562cc8f7b792c581a4eabbb0fe896c2b98f34608e717b2c3ec8ac980985a5dd4da3b1f08ae9991e2e75973d4a478915bbd28420c737ab0ab8e2130a
SSDEEP 384:TZyI4DYolYxOoyi0WZ6w7egEx88FQPzgIij+ZsNO3PlpJKkkjh/TzF7pWncsgre7:dTouIli006weh8awuXQ/opI+L
MD5 SHA1 SHA512 SSDEEP

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Dllhost.exe

Path C:\Users\Admin\AppData\Local\Temp\Dllhost.exe
Size 43KB
SHA256 29c2ba9035cdd613e5cf38e3441a3be91e39c724707659a6473b0e4e24e4bb38
MD5 b34b260c4e200213ffb77f02cb4471eb
SHA1 526ed79466ab1c921aa41f8e699fe24021d57d75
SHA512 d740b113c562cc8f7b792c581a4eabbb0fe896c2b98f34608e717b2c3ec8ac980985a5dd4da3b1f08ae9991e2e75973d4a478915bbd28420c737ab0ab8e2130a
SSDEEP 384:TZyI4DYolYxOoyi0WZ6w7egEx88FQPzgIij+ZsNO3PlpJKkkjh/TzF7pWncsgre7:dTouIli006weh8awuXQ/opI+L
MD5 SHA1 SHA512 SSDEEP

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Server.exe

Path C:\Users\Admin\AppData\Local\Temp\Server.exe
Size 43KB
SHA256 29c2ba9035cdd613e5cf38e3441a3be91e39c724707659a6473b0e4e24e4bb38
MD5 b34b260c4e200213ffb77f02cb4471eb
SHA1 526ed79466ab1c921aa41f8e699fe24021d57d75
SHA512 d740b113c562cc8f7b792c581a4eabbb0fe896c2b98f34608e717b2c3ec8ac980985a5dd4da3b1f08ae9991e2e75973d4a478915bbd28420c737ab0ab8e2130a
SSDEEP 384:TZyI4DYolYxOoyi0WZ6w7egEx88FQPzgIij+ZsNO3PlpJKkkjh/TzF7pWncsgre7:dTouIli006weh8awuXQ/opI+L
MD5 SHA1 SHA512 SSDEEP

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Server.exe

Path C:\Users\Admin\AppData\Local\Temp\Server.exe
Size 43KB
SHA256 29c2ba9035cdd613e5cf38e3441a3be91e39c724707659a6473b0e4e24e4bb38
MD5 b34b260c4e200213ffb77f02cb4471eb
SHA1 526ed79466ab1c921aa41f8e699fe24021d57d75
SHA512 d740b113c562cc8f7b792c581a4eabbb0fe896c2b98f34608e717b2c3ec8ac980985a5dd4da3b1f08ae9991e2e75973d4a478915bbd28420c737ab0ab8e2130a
SSDEEP 384:TZyI4DYolYxOoyi0WZ6w7egEx88FQPzgIij+ZsNO3PlpJKkkjh/TzF7pWncsgre7:dTouIli006weh8awuXQ/opI+L
MD5 SHA1 SHA512 SSDEEP

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Server.exe

Path C:\Users\Admin\AppData\Local\Temp\Server.exe
Size 43KB
SHA256 29c2ba9035cdd613e5cf38e3441a3be91e39c724707659a6473b0e4e24e4bb38
MD5 b34b260c4e200213ffb77f02cb4471eb
SHA1 526ed79466ab1c921aa41f8e699fe24021d57d75
SHA512 d740b113c562cc8f7b792c581a4eabbb0fe896c2b98f34608e717b2c3ec8ac980985a5dd4da3b1f08ae9991e2e75973d4a478915bbd28420c737ab0ab8e2130a
SSDEEP 384:TZyI4DYolYxOoyi0WZ6w7egEx88FQPzgIij+ZsNO3PlpJKkkjh/TzF7pWncsgre7:dTouIli006weh8awuXQ/opI+L
MD5 SHA1 SHA512 SSDEEP

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Dllhost.exe

Path \Users\Admin\AppData\Local\Temp\Dllhost.exe
Size 43KB
SHA256 29c2ba9035cdd613e5cf38e3441a3be91e39c724707659a6473b0e4e24e4bb38
MD5 b34b260c4e200213ffb77f02cb4471eb
SHA1 526ed79466ab1c921aa41f8e699fe24021d57d75
SHA512 d740b113c562cc8f7b792c581a4eabbb0fe896c2b98f34608e717b2c3ec8ac980985a5dd4da3b1f08ae9991e2e75973d4a478915bbd28420c737ab0ab8e2130a
SSDEEP 384:TZyI4DYolYxOoyi0WZ6w7egEx88FQPzgIij+ZsNO3PlpJKkkjh/TzF7pWncsgre7:dTouIli006weh8awuXQ/opI+L
MD5 SHA1 SHA512 SSDEEP

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memory/1172-66-0x0000000000D00000-0x0000000000D12000-memory.dmp

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memory/1268-60-0x00000000011B0000-0x00000000011C2000-memory.dmp

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memory/1672-69-0x0000000001350000-0x0000000001362000-memory.dmp

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memory/2016-54-0x0000000000F90000-0x0000000000FA2000-memory.dmp

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memory/2016-55-0x0000000075C01000-0x0000000075C03000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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