njrat | 3c44cbb99cc237c087e10c63fae5a7e8bb26c602241b0be79e9f984cdaba9781

General

Target

3c44cbb99cc237c087e10c63fae5a7e8bb26c602241b0be79e9f984cdaba9781N.exe
Size

43KB
MD5

7b5539d4e33d06c87cc73b529af14380
SHA1

d453ed2e3d34baf021af815ef512d990cc68d1a9
SHA256

3c44cbb99cc237c087e10c63fae5a7e8bb26c602241b0be79e9f984cdaba9781
SHA512

9e3a35be37590b323f3d1deb9921b8ec917986c396f89bdccc66fa2288a927544ca15c1ead5115f361f5d6fcf3bf10fda6f17824fd3cd89b4cfafe462221c673
SSDEEP

384:76ZyA4D4olYxOoyi0I7wycuEN88FQPzgIij+ZsNO3PlpJKkkjh/TzF7pWni/greT:8fouIli0gwjL8awuXQ/on/+L+

Score

10^/10

njrat hacked discovery persistence trojan

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

HacKed

C2

127.0.0.1:5555

Mutex

Windows Update

Attributes

reg_key
Windows Update
splitter
|Hassan|

Signatures

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

Checks computer location settings 2 TTPs 2 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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	3c44cbb99cc237c087e10c63fae5a7e8bb26c602241b0be79e9f984cdaba9781N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	Server.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 4 IoCs

pid	Process
4488	Server.exe
4388	Dllhost.exe
1436	Server.exe
2016	Server.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Roaming\\Dllhost.exe\" .."	Dllhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Roaming\\Dllhost.exe\" .."	Dllhost.exe

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 6 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	3c44cbb99cc237c087e10c63fae5a7e8bb26c602241b0be79e9f984cdaba9781N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Dllhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Server.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
4520	schtasks.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
4488	Server.exe
4388	Dllhost.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	4388	Dllhost.exe
Token: 33	4388	Dllhost.exe
Token: SeIncBasePriorityPrivilege	4388	Dllhost.exe
Token: 33	4388	Dllhost.exe
Token: SeIncBasePriorityPrivilege	4388	Dllhost.exe
Token: 33	4388	Dllhost.exe
Token: SeIncBasePriorityPrivilege	4388	Dllhost.exe
Token: 33	4388	Dllhost.exe
Token: SeIncBasePriorityPrivilege	4388	Dllhost.exe
Token: 33	4388	Dllhost.exe
Token: SeIncBasePriorityPrivilege	4388	Dllhost.exe
Token: 33	4388	Dllhost.exe
Token: SeIncBasePriorityPrivilege	4388	Dllhost.exe
Token: 33	4388	Dllhost.exe
Token: SeIncBasePriorityPrivilege	4388	Dllhost.exe
Token: 33	4388	Dllhost.exe
Token: SeIncBasePriorityPrivilege	4388	Dllhost.exe
Token: 33	4388	Dllhost.exe
Token: SeIncBasePriorityPrivilege	4388	Dllhost.exe
Token: 33	4388	Dllhost.exe
Token: SeIncBasePriorityPrivilege	4388	Dllhost.exe
Token: 33	4388	Dllhost.exe
Token: SeIncBasePriorityPrivilege	4388	Dllhost.exe
Token: 33	4388	Dllhost.exe
Token: SeIncBasePriorityPrivilege	4388	Dllhost.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3316 wrote to memory of 4488	3316	3c44cbb99cc237c087e10c63fae5a7e8bb26c602241b0be79e9f984cdaba9781N.exe	85
PID 3316 wrote to memory of 4488	3316	3c44cbb99cc237c087e10c63fae5a7e8bb26c602241b0be79e9f984cdaba9781N.exe	85
PID 3316 wrote to memory of 4488	3316	3c44cbb99cc237c087e10c63fae5a7e8bb26c602241b0be79e9f984cdaba9781N.exe	85
PID 4488 wrote to memory of 4388	4488	Server.exe	95
PID 4488 wrote to memory of 4388	4488	Server.exe	95
PID 4488 wrote to memory of 4388	4488	Server.exe	95
PID 4388 wrote to memory of 4520	4388	Dllhost.exe	101
PID 4388 wrote to memory of 4520	4388	Dllhost.exe	101
PID 4388 wrote to memory of 4520	4388	Dllhost.exe	101

C:\Users\Admin\AppData\Local\Temp\3c44cbb99cc237c087e10c63fae5a7e8bb26c602241b0be79e9f984cdaba9781N.exe
"C:\Users\Admin\AppData\Local\Temp\3c44cbb99cc237c087e10c63fae5a7e8bb26c602241b0be79e9f984cdaba9781N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3316
- C:\Users\Admin\Desktop\Server.exe
  "C:\Users\Admin\Desktop\Server.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of WriteProcessMemory
  PID:4488
- - C:\Users\Admin\AppData\Roaming\Dllhost.exe
    "C:\Users\Admin\AppData\Roaming\Dllhost.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4388
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\Admin\AppData\Local\Temp/Server.exe
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:4520

C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1436

C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Server.exe.log

Filesize
507B

MD5
25d1b50e7c0d451f3d850eb54d27ca05

SHA1
a238807715c70a335f54e80d4855644b21a9e870

SHA256
650faa13e983c9046c9030f63a5fa1c33900432ec7cb3762e015da2e7c5b34a5

SHA512
4223a26b2fabefdf1c01443ccc7bd887464d27f02694379895a040c66db472d541218d501f1c01e1bd31012d079a31baf24e20882c32cf652a09a74e3bf385f5

Download Submit
C:\Users\Admin\Desktop\Server.exe

Filesize
43KB

MD5
1b46a5542b4758b914541297666f4673

SHA1
fea4e3965c2d046e906f15d552a993a2834264b5

SHA256
ece5d03a89a7039daacf406bc27fedfa90e25071e8810f07b6caeefac41a04e1

SHA512
0e07980e098f644c4a6adcfe348c3dcce99b6a22848a9e8506f691839869f465db2991573289aa4645c7c3b3640b966cf32c0e654ce084896a4de491a26f20d4

Download Submit
memory/4388-24-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download
memory/4388-33-0x00000000051E0000-0x00000000051EA000-memory.dmp

Filesize
40KB

Download
memory/4388-29-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download
memory/4388-28-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download
memory/4388-25-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download
memory/4488-10-0x0000000004C90000-0x0000000004D2C000-memory.dmp

Filesize
624KB

Download
memory/4488-23-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download
memory/4488-13-0x00000000050C0000-0x0000000005152000-memory.dmp

Filesize
584KB

Download
memory/4488-12-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download
memory/4488-11-0x00000000055D0000-0x0000000005B74000-memory.dmp

Filesize
5.6MB

Download
memory/4488-9-0x0000000000290000-0x00000000002A2000-memory.dmp

Filesize
72KB

Download
memory/4488-8-0x00000000750DE000-0x00000000750DF000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads