njrat | 7e31b3a603afe3a04745f35987db0d90e2643676b920df2185e11ae06ad32a4f

General

Target

zrr4Nw19.exe
Size

28KB
MD5

98f22cce467d54a330bbbce9a0261a5a
SHA1

6cbd7608018a7d503e653f444004ca525d90875c
SHA256

7e31b3a603afe3a04745f35987db0d90e2643676b920df2185e11ae06ad32a4f
SHA512

7f2a7afcd1397f3f920da7b7585fdd948cff4b6e7944f83cd1bdc614d3db333a2c5dc2b3c85a61688d8d1e789ffb484425fa619e56d41a266eff2298f98d73f8

Score

10^/10

njrat fka evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

FKA

Mutex

15ea4944f270282d46a1f0dd4d332e8f

Attributes

reg_key
15ea4944f270282d46a1f0dd4d332e8f
splitter
|'|'|

Signatures

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

Processes:

svchost.exe

pid process

1612 svchost.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

pid	process
1612	svchost.exe

Drops startup file 2 IoCs

Processes:

svchost.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\15ea4944f270282d46a1f0dd4d332e8f.exe	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\15ea4944f270282d46a1f0dd4d332e8f.exe	svchost.exe

Loads dropped DLL 1 IoCs

Processes:

zrr4Nw19.exe

pid process

1640 zrr4Nw19.exe

pid	process
1640	zrr4Nw19.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\15ea4944f270282d46a1f0dd4d332e8f = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\" .."	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\15ea4944f270282d46a1f0dd4d332e8f = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\" .."	svchost.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
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 30 IoCs

Processes:

zrr4Nw19.exesvchost.exe

description	pid	process
Token: SeDebugPrivilege	1640	zrr4Nw19.exe
Token: SeDebugPrivilege	1612	svchost.exe
Token: 33	1612	svchost.exe
Token: SeIncBasePriorityPrivilege	1612	svchost.exe
Token: 33	1612	svchost.exe
Token: SeIncBasePriorityPrivilege	1612	svchost.exe
Token: 33	1612	svchost.exe
Token: SeIncBasePriorityPrivilege	1612	svchost.exe
Token: 33	1612	svchost.exe
Token: SeIncBasePriorityPrivilege	1612	svchost.exe
Token: 33	1612	svchost.exe
Token: SeIncBasePriorityPrivilege	1612	svchost.exe
Token: 33	1612	svchost.exe
Token: SeIncBasePriorityPrivilege	1612	svchost.exe
Token: 33	1612	svchost.exe
Token: SeIncBasePriorityPrivilege	1612	svchost.exe
Token: 33	1612	svchost.exe
Token: SeIncBasePriorityPrivilege	1612	svchost.exe
Token: 33	1612	svchost.exe
Token: SeIncBasePriorityPrivilege	1612	svchost.exe
Token: 33	1612	svchost.exe
Token: SeIncBasePriorityPrivilege	1612	svchost.exe
Token: 33	1612	svchost.exe
Token: SeIncBasePriorityPrivilege	1612	svchost.exe
Token: 33	1612	svchost.exe
Token: SeIncBasePriorityPrivilege	1612	svchost.exe
Token: 33	1612	svchost.exe
Token: SeIncBasePriorityPrivilege	1612	svchost.exe
Token: 33	1612	svchost.exe
Token: SeIncBasePriorityPrivilege	1612	svchost.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

zrr4Nw19.exesvchost.exe

description	pid	process	target process
PID 1640 wrote to memory of 1612	1640	zrr4Nw19.exe	svchost.exe
PID 1640 wrote to memory of 1612	1640	zrr4Nw19.exe	svchost.exe
PID 1640 wrote to memory of 1612	1640	zrr4Nw19.exe	svchost.exe
PID 1640 wrote to memory of 1612	1640	zrr4Nw19.exe	svchost.exe
PID 1612 wrote to memory of 964	1612	svchost.exe	netsh.exe
PID 1612 wrote to memory of 964	1612	svchost.exe	netsh.exe
PID 1612 wrote to memory of 964	1612	svchost.exe	netsh.exe
PID 1612 wrote to memory of 964	1612	svchost.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\zrr4Nw19.exe
"C:\Users\Admin\AppData\Local\Temp\zrr4Nw19.exe"
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1640

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1612

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\svchost.exe" "svchost.exe" ENABLE
3⤵
PID:964

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

Web Service

1

T1102

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\svchost.exe
MD5
98f22cce467d54a330bbbce9a0261a5a

SHA1
6cbd7608018a7d503e653f444004ca525d90875c

SHA256
7e31b3a603afe3a04745f35987db0d90e2643676b920df2185e11ae06ad32a4f

SHA512
7f2a7afcd1397f3f920da7b7585fdd948cff4b6e7944f83cd1bdc614d3db333a2c5dc2b3c85a61688d8d1e789ffb484425fa619e56d41a266eff2298f98d73f8

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe
MD5
98f22cce467d54a330bbbce9a0261a5a

SHA1
6cbd7608018a7d503e653f444004ca525d90875c

SHA256
7e31b3a603afe3a04745f35987db0d90e2643676b920df2185e11ae06ad32a4f

SHA512
7f2a7afcd1397f3f920da7b7585fdd948cff4b6e7944f83cd1bdc614d3db333a2c5dc2b3c85a61688d8d1e789ffb484425fa619e56d41a266eff2298f98d73f8

Download Submit
\Users\Admin\AppData\Roaming\svchost.exe
MD5
98f22cce467d54a330bbbce9a0261a5a

SHA1
6cbd7608018a7d503e653f444004ca525d90875c

SHA256
7e31b3a603afe3a04745f35987db0d90e2643676b920df2185e11ae06ad32a4f

SHA512
7f2a7afcd1397f3f920da7b7585fdd948cff4b6e7944f83cd1bdc614d3db333a2c5dc2b3c85a61688d8d1e789ffb484425fa619e56d41a266eff2298f98d73f8

Download Submit
memory/964-12-0x0000000000000000-mapping.dmp

Download
memory/1612-6-0x0000000000000000-mapping.dmp

Download
memory/1612-9-0x00000000745C0000-0x0000000074CAE000-memory.dmp

Filesize
6.9MB

Download
memory/1612-10-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/1640-2-0x00000000745C0000-0x0000000074CAE000-memory.dmp

Filesize
6.9MB

Download
memory/1640-3-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads