njrat | 555804e32fb7cf8a409d64b34818f6d80ea3752addfbe65275f0feed62f8b9d9

General

Target

f87a1f62250507ae964563a57e31a6a4_JaffaCakes118.exe
Size

43KB
MD5

f87a1f62250507ae964563a57e31a6a4
SHA1

9db49afe54758cad6ba09fe1c16dcc675561610e
SHA256

555804e32fb7cf8a409d64b34818f6d80ea3752addfbe65275f0feed62f8b9d9
SHA512

0673554fafc0dba92642d86f90033042daafde60ef3467b25dae4b1fe1b0d9eb463e812ba885ca737da691b6d5c3065b211e16d9592513bc07e0e68213096bc1
SSDEEP

384:tZyvMg98NaIyrtdb32E68ExiE7azsIij+ZsNO3PlpJKkkjh/TzF7pWnLAgreT0pO:HWywFrLb32HVAuXQ/oOk+L

Score

10^/10

njrat 1223 discovery persistence trojan

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

1223

C2

188.163.43.147:7777

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 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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	f87a1f62250507ae964563a57e31a6a4_JaffaCakes118.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
3344	Dllhost.exe
4108	Server.exe
4552	Server.exe
3348	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-1-5-21-656926755-4116854191-210765258-1000\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).

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	f87a1f62250507ae964563a57e31a6a4_JaffaCakes118.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
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
4696	schtasks.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2924	f87a1f62250507ae964563a57e31a6a4_JaffaCakes118.exe
3344	Dllhost.exe

Suspicious use of AdjustPrivilegeToken 31 IoCs

description	pid	Process
Token: SeDebugPrivilege	3344	Dllhost.exe
Token: 33	3344	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3344	Dllhost.exe
Token: 33	3344	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3344	Dllhost.exe
Token: 33	3344	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3344	Dllhost.exe
Token: 33	3344	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3344	Dllhost.exe
Token: 33	3344	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3344	Dllhost.exe
Token: 33	3344	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3344	Dllhost.exe
Token: 33	3344	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3344	Dllhost.exe
Token: 33	3344	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3344	Dllhost.exe
Token: 33	3344	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3344	Dllhost.exe
Token: 33	3344	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3344	Dllhost.exe
Token: 33	3344	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3344	Dllhost.exe
Token: 33	3344	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3344	Dllhost.exe
Token: 33	3344	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3344	Dllhost.exe
Token: 33	3344	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3344	Dllhost.exe
Token: 33	3344	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3344	Dllhost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2924 wrote to memory of 3344	2924	f87a1f62250507ae964563a57e31a6a4_JaffaCakes118.exe	85
PID 2924 wrote to memory of 3344	2924	f87a1f62250507ae964563a57e31a6a4_JaffaCakes118.exe	85
PID 2924 wrote to memory of 3344	2924	f87a1f62250507ae964563a57e31a6a4_JaffaCakes118.exe	85
PID 3344 wrote to memory of 4696	3344	Dllhost.exe	91
PID 3344 wrote to memory of 4696	3344	Dllhost.exe	91
PID 3344 wrote to memory of 4696	3344	Dllhost.exe	91

C:\Users\Admin\AppData\Local\Temp\f87a1f62250507ae964563a57e31a6a4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f87a1f62250507ae964563a57e31a6a4_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2924
- C:\Users\Admin\AppData\Local\Temp\Dllhost.exe
  "C:\Users\Admin\AppData\Local\Temp\Dllhost.exe"
  2⤵
  - 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:3344
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\Admin\AppData\Local\Temp/Server.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4696

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:4108

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:4552

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:3348

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

Replay Monitor

Loading Replay Monitor...

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\AppData\Local\Temp\Dllhost.exe

Filesize
43KB

MD5
f87a1f62250507ae964563a57e31a6a4

SHA1
9db49afe54758cad6ba09fe1c16dcc675561610e

SHA256
555804e32fb7cf8a409d64b34818f6d80ea3752addfbe65275f0feed62f8b9d9

SHA512
0673554fafc0dba92642d86f90033042daafde60ef3467b25dae4b1fe1b0d9eb463e812ba885ca737da691b6d5c3065b211e16d9592513bc07e0e68213096bc1

Download Submit
memory/2924-16-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/2924-3-0x00000000057D0000-0x0000000005D74000-memory.dmp

Filesize
5.6MB

Download
memory/2924-4-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/2924-5-0x0000000005220000-0x00000000052B2000-memory.dmp

Filesize
584KB

Download
memory/2924-2-0x0000000004E20000-0x0000000004EBC000-memory.dmp

Filesize
624KB

Download
memory/2924-1-0x0000000000420000-0x0000000000432000-memory.dmp

Filesize
72KB

Download
memory/2924-0-0x000000007476E000-0x000000007476F000-memory.dmp

Filesize
4KB

Download
memory/3344-17-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/3344-20-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/3344-21-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/3344-22-0x0000000005330000-0x000000000533A000-memory.dmp

Filesize
40KB

Download
memory/3344-15-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/4108-25-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/4108-26-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/4108-28-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads