njrat | 647345904aaff6b33fbf5d2a33325f3ec43ad3fc83359f38d6510ca1cb421277

General

Target

87862862590c9d404639ac3efa951146.exe
Size

31KB
MD5

87862862590c9d404639ac3efa951146
SHA1

52b442a0c2d4048f6910e71ed82062507b4a337c
SHA256

647345904aaff6b33fbf5d2a33325f3ec43ad3fc83359f38d6510ca1cb421277
SHA512

019ee31ead04e222c32a6a2f1d8e82657550891656b186aa5f8e0d657ad83c0be4678d962384675a0a0509d6b2b5923d3e1bddf1f2364216d01eb9a22225b777

Score

10^/10

njrat jokev1 evasion persistence trojan

Malware Config

Extracted

Family

njrat

Botnet

JokeV1

Mutex

29a9d77dac482d0db10193f119bf99a5

Attributes

reg_key
29a9d77dac482d0db10193f119bf99a5

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Executes dropped EXE 1 IoCs

Processes:

JokeV1.exe

pid process

1820 JokeV1.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

pid	process
1820	JokeV1.exe

Drops startup file 2 IoCs

Processes:

JokeV1.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\29a9d77dac482d0db10193f119bf99a5.exe	JokeV1.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\29a9d77dac482d0db10193f119bf99a5.exe	JokeV1.exe

Loads dropped DLL 2 IoCs

Processes:

87862862590c9d404639ac3efa951146.exe

pid process

1208 87862862590c9d404639ac3efa951146.exe
1208 87862862590c9d404639ac3efa951146.exe

pid	process
1208	87862862590c9d404639ac3efa951146.exe
1208	87862862590c9d404639ac3efa951146.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

JokeV1.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run\29a9d77dac482d0db10193f119bf99a5 = "\"C:\\Users\\Admin\\AppData\\Roaming\\JokeV1.exe\" .."	JokeV1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\29a9d77dac482d0db10193f119bf99a5 = "\"C:\\Users\\Admin\\AppData\\Roaming\\JokeV1.exe\" .."	JokeV1.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 31 IoCs

Processes:

JokeV1.exe

description	pid	process
Token: SeDebugPrivilege	1820	JokeV1.exe
Token: 33	1820	JokeV1.exe
Token: SeIncBasePriorityPrivilege	1820	JokeV1.exe
Token: 33	1820	JokeV1.exe
Token: SeIncBasePriorityPrivilege	1820	JokeV1.exe
Token: 33	1820	JokeV1.exe
Token: SeIncBasePriorityPrivilege	1820	JokeV1.exe
Token: 33	1820	JokeV1.exe
Token: SeIncBasePriorityPrivilege	1820	JokeV1.exe
Token: 33	1820	JokeV1.exe
Token: SeIncBasePriorityPrivilege	1820	JokeV1.exe
Token: 33	1820	JokeV1.exe
Token: SeIncBasePriorityPrivilege	1820	JokeV1.exe
Token: 33	1820	JokeV1.exe
Token: SeIncBasePriorityPrivilege	1820	JokeV1.exe
Token: 33	1820	JokeV1.exe
Token: SeIncBasePriorityPrivilege	1820	JokeV1.exe
Token: 33	1820	JokeV1.exe
Token: SeIncBasePriorityPrivilege	1820	JokeV1.exe
Token: 33	1820	JokeV1.exe
Token: SeIncBasePriorityPrivilege	1820	JokeV1.exe
Token: 33	1820	JokeV1.exe
Token: SeIncBasePriorityPrivilege	1820	JokeV1.exe
Token: 33	1820	JokeV1.exe
Token: SeIncBasePriorityPrivilege	1820	JokeV1.exe
Token: 33	1820	JokeV1.exe
Token: SeIncBasePriorityPrivilege	1820	JokeV1.exe
Token: 33	1820	JokeV1.exe
Token: SeIncBasePriorityPrivilege	1820	JokeV1.exe
Token: 33	1820	JokeV1.exe
Token: SeIncBasePriorityPrivilege	1820	JokeV1.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

87862862590c9d404639ac3efa951146.exeJokeV1.exe

description	pid	process	target process
PID 1208 wrote to memory of 1820	1208	87862862590c9d404639ac3efa951146.exe	JokeV1.exe
PID 1208 wrote to memory of 1820	1208	87862862590c9d404639ac3efa951146.exe	JokeV1.exe
PID 1208 wrote to memory of 1820	1208	87862862590c9d404639ac3efa951146.exe	JokeV1.exe
PID 1208 wrote to memory of 1820	1208	87862862590c9d404639ac3efa951146.exe	JokeV1.exe
PID 1820 wrote to memory of 1304	1820	JokeV1.exe	netsh.exe
PID 1820 wrote to memory of 1304	1820	JokeV1.exe	netsh.exe
PID 1820 wrote to memory of 1304	1820	JokeV1.exe	netsh.exe
PID 1820 wrote to memory of 1304	1820	JokeV1.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\87862862590c9d404639ac3efa951146.exe
"C:\Users\Admin\AppData\Local\Temp\87862862590c9d404639ac3efa951146.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1208

C:\Users\Admin\AppData\Roaming\JokeV1.exe
"C:\Users\Admin\AppData\Roaming\JokeV1.exe"
2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1820

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\JokeV1.exe" "JokeV1.exe" ENABLE
3⤵
PID:1304

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\JokeV1.exe
MD5
87862862590c9d404639ac3efa951146

SHA1
52b442a0c2d4048f6910e71ed82062507b4a337c

SHA256
647345904aaff6b33fbf5d2a33325f3ec43ad3fc83359f38d6510ca1cb421277

SHA512
019ee31ead04e222c32a6a2f1d8e82657550891656b186aa5f8e0d657ad83c0be4678d962384675a0a0509d6b2b5923d3e1bddf1f2364216d01eb9a22225b777

Download Submit
C:\Users\Admin\AppData\Roaming\JokeV1.exe
MD5
87862862590c9d404639ac3efa951146

SHA1
52b442a0c2d4048f6910e71ed82062507b4a337c

SHA256
647345904aaff6b33fbf5d2a33325f3ec43ad3fc83359f38d6510ca1cb421277

SHA512
019ee31ead04e222c32a6a2f1d8e82657550891656b186aa5f8e0d657ad83c0be4678d962384675a0a0509d6b2b5923d3e1bddf1f2364216d01eb9a22225b777

Download Submit
\Users\Admin\AppData\Roaming\JokeV1.exe
MD5
87862862590c9d404639ac3efa951146

SHA1
52b442a0c2d4048f6910e71ed82062507b4a337c

SHA256
647345904aaff6b33fbf5d2a33325f3ec43ad3fc83359f38d6510ca1cb421277

SHA512
019ee31ead04e222c32a6a2f1d8e82657550891656b186aa5f8e0d657ad83c0be4678d962384675a0a0509d6b2b5923d3e1bddf1f2364216d01eb9a22225b777

Download Submit
\Users\Admin\AppData\Roaming\JokeV1.exe
MD5
87862862590c9d404639ac3efa951146

SHA1
52b442a0c2d4048f6910e71ed82062507b4a337c

SHA256
647345904aaff6b33fbf5d2a33325f3ec43ad3fc83359f38d6510ca1cb421277

SHA512
019ee31ead04e222c32a6a2f1d8e82657550891656b186aa5f8e0d657ad83c0be4678d962384675a0a0509d6b2b5923d3e1bddf1f2364216d01eb9a22225b777

Download Submit
memory/1304-7-0x0000000000000000-mapping.dmp

Download
memory/1820-4-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads