njrat | 6c65d6bc349fbaf7b54b3bd42dd16b32c62b97a48ee74f3d40ef8398bcf8f359

General

Target

a63289f40761e94235e55b81499db96f_JaffaCakes118.exe
Size

43KB
MD5

a63289f40761e94235e55b81499db96f
SHA1

bc67a8f3e46d6060c22dfa6f308e94a7eb35bfc0
SHA256

6c65d6bc349fbaf7b54b3bd42dd16b32c62b97a48ee74f3d40ef8398bcf8f359
SHA512

c2a8b7ccadfc310c4d08e97da6f83422fcc949144e6073d7cf39c9881a7ad8778e4c847782ece20e6c0fd587dc01b31b67f26edf01e813567594b18492a5e330
SSDEEP

384:88Zy+FgyCEFmVoyblVM38K0EBEzMghwzEIij+ZsNO3PlpJKkkjh/TzF7pWncagrq:86nFgyVAVlbb2fOQgQuXQ/ope+L

Score

10^/10

njrat user1 persistence trojan

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

User1

C2

csgo98437.ddns.net:1604

Mutex

Windows Update

Attributes

reg_key
Windows Update
splitter
|Hassan|

Signatures

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

Drops startup file 2 IoCs

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

Executes dropped EXE 4 IoCs

pid	Process
2828	steamcommon.exe
2740	Server.exe
2168	Server.exe
2924	Server.exe

Loads dropped DLL 1 IoCs

pid	Process
2412	a63289f40761e94235e55b81499db96f_JaffaCakes118.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-1-5-21-2737914667-933161113-3798636211-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Roaming\\steamcommon.exe\" .."	steamcommon.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Roaming\\steamcommon.exe\" .."	steamcommon.exe

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

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/Job

T1053

pid	Process
2644	schtasks.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2412	a63289f40761e94235e55b81499db96f_JaffaCakes118.exe
2828	steamcommon.exe

Suspicious use of AdjustPrivilegeToken 31 IoCs

description	pid	Process
Token: SeDebugPrivilege	2828	steamcommon.exe
Token: 33	2828	steamcommon.exe
Token: SeIncBasePriorityPrivilege	2828	steamcommon.exe
Token: 33	2828	steamcommon.exe
Token: SeIncBasePriorityPrivilege	2828	steamcommon.exe
Token: 33	2828	steamcommon.exe
Token: SeIncBasePriorityPrivilege	2828	steamcommon.exe
Token: 33	2828	steamcommon.exe
Token: SeIncBasePriorityPrivilege	2828	steamcommon.exe
Token: 33	2828	steamcommon.exe
Token: SeIncBasePriorityPrivilege	2828	steamcommon.exe
Token: 33	2828	steamcommon.exe
Token: SeIncBasePriorityPrivilege	2828	steamcommon.exe
Token: 33	2828	steamcommon.exe
Token: SeIncBasePriorityPrivilege	2828	steamcommon.exe
Token: 33	2828	steamcommon.exe
Token: SeIncBasePriorityPrivilege	2828	steamcommon.exe
Token: 33	2828	steamcommon.exe
Token: SeIncBasePriorityPrivilege	2828	steamcommon.exe
Token: 33	2828	steamcommon.exe
Token: SeIncBasePriorityPrivilege	2828	steamcommon.exe
Token: 33	2828	steamcommon.exe
Token: SeIncBasePriorityPrivilege	2828	steamcommon.exe
Token: 33	2828	steamcommon.exe
Token: SeIncBasePriorityPrivilege	2828	steamcommon.exe
Token: 33	2828	steamcommon.exe
Token: SeIncBasePriorityPrivilege	2828	steamcommon.exe
Token: 33	2828	steamcommon.exe
Token: SeIncBasePriorityPrivilege	2828	steamcommon.exe
Token: 33	2828	steamcommon.exe
Token: SeIncBasePriorityPrivilege	2828	steamcommon.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2412 wrote to memory of 2828	2412	a63289f40761e94235e55b81499db96f_JaffaCakes118.exe	28
PID 2412 wrote to memory of 2828	2412	a63289f40761e94235e55b81499db96f_JaffaCakes118.exe	28
PID 2412 wrote to memory of 2828	2412	a63289f40761e94235e55b81499db96f_JaffaCakes118.exe	28
PID 2412 wrote to memory of 2828	2412	a63289f40761e94235e55b81499db96f_JaffaCakes118.exe	28
PID 2828 wrote to memory of 2644	2828	steamcommon.exe	29
PID 2828 wrote to memory of 2644	2828	steamcommon.exe	29
PID 2828 wrote to memory of 2644	2828	steamcommon.exe	29
PID 2828 wrote to memory of 2644	2828	steamcommon.exe	29
PID 2536 wrote to memory of 2740	2536	taskeng.exe	32
PID 2536 wrote to memory of 2740	2536	taskeng.exe	32
PID 2536 wrote to memory of 2740	2536	taskeng.exe	32
PID 2536 wrote to memory of 2740	2536	taskeng.exe	32
PID 2536 wrote to memory of 2168	2536	taskeng.exe	35
PID 2536 wrote to memory of 2168	2536	taskeng.exe	35
PID 2536 wrote to memory of 2168	2536	taskeng.exe	35
PID 2536 wrote to memory of 2168	2536	taskeng.exe	35
PID 2536 wrote to memory of 2924	2536	taskeng.exe	36
PID 2536 wrote to memory of 2924	2536	taskeng.exe	36
PID 2536 wrote to memory of 2924	2536	taskeng.exe	36
PID 2536 wrote to memory of 2924	2536	taskeng.exe	36

C:\Users\Admin\AppData\Local\Temp\a63289f40761e94235e55b81499db96f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a63289f40761e94235e55b81499db96f_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2412
- C:\Users\Admin\AppData\Roaming\steamcommon.exe
  "C:\Users\Admin\AppData\Roaming\steamcommon.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2828
- - 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:2644

C:\Windows\system32\taskeng.exe
taskeng.exe {43651077-3EAA-4D55-AEA2-5F78EA23BB32} S-1-5-21-2737914667-933161113-3798636211-1000:PUMARTNR\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Users\Admin\AppData\Local\Temp\Server.exe
  C:\Users\Admin\AppData\Local\Temp/Server.exe
  2⤵
  - Executes dropped EXE
  PID:2740
- C:\Users\Admin\AppData\Local\Temp\Server.exe
  C:\Users\Admin\AppData\Local\Temp/Server.exe
  2⤵
  - Executes dropped EXE
  PID:2168
- C:\Users\Admin\AppData\Local\Temp\Server.exe
  C:\Users\Admin\AppData\Local\Temp/Server.exe
  2⤵
  - Executes dropped EXE
  PID:2924

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Roaming\steamcommon.exe

Filesize
43KB

MD5
a63289f40761e94235e55b81499db96f

SHA1
bc67a8f3e46d6060c22dfa6f308e94a7eb35bfc0

SHA256
6c65d6bc349fbaf7b54b3bd42dd16b32c62b97a48ee74f3d40ef8398bcf8f359

SHA512
c2a8b7ccadfc310c4d08e97da6f83422fcc949144e6073d7cf39c9881a7ad8778e4c847782ece20e6c0fd587dc01b31b67f26edf01e813567594b18492a5e330

Download Submit
memory/2168-22-0x0000000001140000-0x0000000001152000-memory.dmp

Filesize
72KB

Download
memory/2412-0-0x0000000074DFE000-0x0000000074DFF000-memory.dmp

Filesize
4KB

Download
memory/2412-1-0x0000000001340000-0x0000000001352000-memory.dmp

Filesize
72KB

Download
memory/2412-2-0x0000000074DF0000-0x00000000754DE000-memory.dmp

Filesize
6.9MB

Download
memory/2412-13-0x0000000074DF0000-0x00000000754DE000-memory.dmp

Filesize
6.9MB

Download
memory/2740-18-0x0000000000050000-0x0000000000062000-memory.dmp

Filesize
72KB

Download
memory/2828-11-0x0000000000C50000-0x0000000000C62000-memory.dmp

Filesize
72KB

Download
memory/2828-10-0x0000000074DF0000-0x00000000754DE000-memory.dmp

Filesize
6.9MB

Download
memory/2828-12-0x0000000074DF0000-0x00000000754DE000-memory.dmp

Filesize
6.9MB

Download
memory/2828-19-0x0000000074DF0000-0x00000000754DE000-memory.dmp

Filesize
6.9MB

Download
memory/2828-20-0x0000000074DF0000-0x00000000754DE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads