njrat | 087701ce73bee509cf6e3da1a85898914b4a30e17e73aebf344d413f42d74894

General

Target

f6a7d13a0c660ef95ce260345d6292e9_JaffaCakes118.exe
Size

43KB
MD5

f6a7d13a0c660ef95ce260345d6292e9
SHA1

7759242eeb650e30062beae2d07c044489339355
SHA256

087701ce73bee509cf6e3da1a85898914b4a30e17e73aebf344d413f42d74894
SHA512

37066b32e7d0c6b0038ae3fb33aad84127560028b6783a69f88490f37ab563ea3fa4d95a5fed889c2a86af4c779f3792099b0cf4b5f7297ffe98dd40a40a65fc
SSDEEP

384:ZZyRCFIB+oyiFN7cWMEHavIuZzQIij+ZsNO3PlpJKkkjh/TzF7pWnLfgreT0pqf7:7n+Ilir7zOHuXQ/omf+L

Score

10^/10

njrat maxim discovery persistence trojan

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

maxim

C2

maximgg.ddns.net: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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	f6a7d13a0c660ef95ce260345d6292e9_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	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe	svchost.exe

Executes dropped EXE 3 IoCs

pid	Process
1360	svchost.exe
4516	Server.exe
4116	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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\svchost.exe\" .."	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\svchost.exe\" .."	svchost.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 5 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	f6a7d13a0c660ef95ce260345d6292e9_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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
500	schtasks.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
5048	f6a7d13a0c660ef95ce260345d6292e9_JaffaCakes118.exe
1360	svchost.exe

Suspicious use of AdjustPrivilegeToken 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	1360	svchost.exe
Token: 33	1360	svchost.exe
Token: SeIncBasePriorityPrivilege	1360	svchost.exe
Token: 33	1360	svchost.exe
Token: SeIncBasePriorityPrivilege	1360	svchost.exe
Token: 33	1360	svchost.exe
Token: SeIncBasePriorityPrivilege	1360	svchost.exe
Token: 33	1360	svchost.exe
Token: SeIncBasePriorityPrivilege	1360	svchost.exe
Token: 33	1360	svchost.exe
Token: SeIncBasePriorityPrivilege	1360	svchost.exe
Token: 33	1360	svchost.exe
Token: SeIncBasePriorityPrivilege	1360	svchost.exe
Token: 33	1360	svchost.exe
Token: SeIncBasePriorityPrivilege	1360	svchost.exe
Token: 33	1360	svchost.exe
Token: SeIncBasePriorityPrivilege	1360	svchost.exe
Token: 33	1360	svchost.exe
Token: SeIncBasePriorityPrivilege	1360	svchost.exe
Token: 33	1360	svchost.exe
Token: SeIncBasePriorityPrivilege	1360	svchost.exe
Token: 33	1360	svchost.exe
Token: SeIncBasePriorityPrivilege	1360	svchost.exe
Token: 33	1360	svchost.exe
Token: SeIncBasePriorityPrivilege	1360	svchost.exe
Token: 33	1360	svchost.exe
Token: SeIncBasePriorityPrivilege	1360	svchost.exe
Token: 33	1360	svchost.exe
Token: SeIncBasePriorityPrivilege	1360	svchost.exe
Token: 33	1360	svchost.exe
Token: SeIncBasePriorityPrivilege	1360	svchost.exe
Token: 33	1360	svchost.exe
Token: SeIncBasePriorityPrivilege	1360	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5048 wrote to memory of 1360	5048	f6a7d13a0c660ef95ce260345d6292e9_JaffaCakes118.exe	82
PID 5048 wrote to memory of 1360	5048	f6a7d13a0c660ef95ce260345d6292e9_JaffaCakes118.exe	82
PID 5048 wrote to memory of 1360	5048	f6a7d13a0c660ef95ce260345d6292e9_JaffaCakes118.exe	82
PID 1360 wrote to memory of 500	1360	svchost.exe	87
PID 1360 wrote to memory of 500	1360	svchost.exe	87
PID 1360 wrote to memory of 500	1360	svchost.exe	87

C:\Users\Admin\AppData\Local\Temp\f6a7d13a0c660ef95ce260345d6292e9_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f6a7d13a0c660ef95ce260345d6292e9_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:5048
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\svchost.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:1360
- - 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:500

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:4516

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:4116

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\AppData\Local\Temp\svchost.exe

Filesize
43KB

MD5
f6a7d13a0c660ef95ce260345d6292e9

SHA1
7759242eeb650e30062beae2d07c044489339355

SHA256
087701ce73bee509cf6e3da1a85898914b4a30e17e73aebf344d413f42d74894

SHA512
37066b32e7d0c6b0038ae3fb33aad84127560028b6783a69f88490f37ab563ea3fa4d95a5fed889c2a86af4c779f3792099b0cf4b5f7297ffe98dd40a40a65fc

Download Submit
memory/1360-19-0x0000000074850000-0x0000000075000000-memory.dmp

Filesize
7.7MB

Download
memory/1360-16-0x0000000074850000-0x0000000075000000-memory.dmp

Filesize
7.7MB

Download
memory/1360-20-0x0000000006140000-0x000000000614A000-memory.dmp

Filesize
40KB

Download
memory/4516-23-0x0000000074850000-0x0000000075000000-memory.dmp

Filesize
7.7MB

Download
memory/4516-24-0x0000000074850000-0x0000000075000000-memory.dmp

Filesize
7.7MB

Download
memory/4516-26-0x0000000074850000-0x0000000075000000-memory.dmp

Filesize
7.7MB

Download
memory/5048-3-0x0000000005EC0000-0x0000000006464000-memory.dmp

Filesize
5.6MB

Download
memory/5048-4-0x0000000074850000-0x0000000075000000-memory.dmp

Filesize
7.7MB

Download
memory/5048-5-0x0000000005A20000-0x0000000005AB2000-memory.dmp

Filesize
584KB

Download
memory/5048-2-0x0000000005630000-0x00000000056CC000-memory.dmp

Filesize
624KB

Download
memory/5048-15-0x0000000074850000-0x0000000075000000-memory.dmp

Filesize
7.7MB

Download
memory/5048-0-0x000000007485E000-0x000000007485F000-memory.dmp

Filesize
4KB

Download
memory/5048-1-0x0000000000C90000-0x0000000000CA2000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads