njrat | a9baa80baffbca2bb7ec0d659f3b30b4550c0188be4e27dd7a1b675670de3bf2

Analysis

max time kernel
153s
max time network
161s
platform
windows7_x64
resource
win7-20220414-en
submitted
18-06-2022 20:44

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General

Target

forvm.exe
Size

37KB
MD5

1c34d0c6964ad975af3dd63fa9282e2e
SHA1

4b1a295f48590c84880a458bbedeafc1512641ee
SHA256

dde7dcf2831fc86f74315f05353ed60908fda5e8c8f2620fe160d63b266db471
SHA512

8b8d5f608c87c8c9ce7a3d1571b77e2f2962b2ac332b474467fddd43902e9a56d1af4eadd5976caa6237c57a691b02f44d96ef2bd436b9e092c569185e9af5d5

Score

10^/10

njrat gay next evasion persistence suricata trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

109.197.196.135:9991

Mutex

413491cbe232876548b9b7cd8a1b451d

Attributes

reg_key
413491cbe232876548b9b7cd8a1b451d
splitter
|'|'|

Extracted

Family

njrat

Version

im523

Botnet

gay

2.tcp.eu.ngrok.io:18163

Mutex

767dc25f03dd681bde2bda93c68cdea8

Attributes

reg_key
767dc25f03dd681bde2bda93c68cdea8
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)
suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)
suricata
suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback (Capture)
suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback (Capture)
suricata
Executes dropped EXE 3 IoCs

Processes:

tmp6A77.tmp.exedllhost.exetmpCD5E.tmp.exe

pid process

1760 tmp6A77.tmp.exe
1460 dllhost.exe
1808 tmpCD5E.tmp.exe
Modifies Windows Firewall 1 TTPs 2 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exenetsh.exe

pid process

828 netsh.exe
1936 netsh.exe

pid	process
1760	tmp6A77.tmp.exe
1460	dllhost.exe
1808	tmpCD5E.tmp.exe

pid	process
828	netsh.exe
1936	netsh.exe

Drops startup file 4 IoCs

Processes:

dllhost.exeforvm.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\413491cbe232876548b9b7cd8a1b451d.exe	dllhost.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\767dc25f03dd681bde2bda93c68cdea8.exe	forvm.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\767dc25f03dd681bde2bda93c68cdea8.exe	forvm.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\413491cbe232876548b9b7cd8a1b451d.exe	dllhost.exe

Loads dropped DLL 3 IoCs

Processes:

forvm.exetmp6A77.tmp.exedllhost.exe

pid process

1776 forvm.exe
1760 tmp6A77.tmp.exe
1460 dllhost.exe

pid	process
1776	forvm.exe
1760	tmp6A77.tmp.exe
1460	dllhost.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

forvm.exedllhost.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run\767dc25f03dd681bde2bda93c68cdea8 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\forvm.exe\" .."	forvm.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\767dc25f03dd681bde2bda93c68cdea8 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\forvm.exe\" .."	forvm.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run\413491cbe232876548b9b7cd8a1b451d = "\"C:\\Users\\Admin\\AppData\\Roaming\\dllhost.exe\" .."	dllhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\413491cbe232876548b9b7cd8a1b451d = "\"C:\\Users\\Admin\\AppData\\Roaming\\dllhost.exe\" .."	dllhost.exe

Drops autorun.inf file 1 TTPs 3 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media
T1091

Processes:

dllhost.exe

description ioc process

File created C:\autorun.inf dllhost.exe
File opened for modification C:\autorun.inf dllhost.exe
File created D:\autorun.inf dllhost.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
File created	C:\autorun.inf	dllhost.exe
File opened for modification	C:\autorun.inf	dllhost.exe
File created	D:\autorun.inf	dllhost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

dllhost.exe

pid	process
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe
1460	dllhost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

dllhost.exe

pid process

1460 dllhost.exe

Suspicious use of AdjustPrivilegeToken 36 IoCs

Processes:

forvm.exedllhost.exe

description	pid	process
Token: SeDebugPrivilege	1776	forvm.exe
Token: 33	1776	forvm.exe
Token: SeIncBasePriorityPrivilege	1776	forvm.exe
Token: 33	1776	forvm.exe
Token: SeIncBasePriorityPrivilege	1776	forvm.exe
Token: SeDebugPrivilege	1460	dllhost.exe
Token: 33	1776	forvm.exe
Token: SeIncBasePriorityPrivilege	1776	forvm.exe
Token: 33	1460	dllhost.exe
Token: SeIncBasePriorityPrivilege	1460	dllhost.exe
Token: 33	1776	forvm.exe
Token: SeIncBasePriorityPrivilege	1776	forvm.exe
Token: 33	1460	dllhost.exe
Token: SeIncBasePriorityPrivilege	1460	dllhost.exe
Token: 33	1776	forvm.exe
Token: SeIncBasePriorityPrivilege	1776	forvm.exe
Token: 33	1460	dllhost.exe
Token: SeIncBasePriorityPrivilege	1460	dllhost.exe
Token: 33	1776	forvm.exe
Token: SeIncBasePriorityPrivilege	1776	forvm.exe
Token: 33	1460	dllhost.exe
Token: SeIncBasePriorityPrivilege	1460	dllhost.exe
Token: 33	1776	forvm.exe
Token: SeIncBasePriorityPrivilege	1776	forvm.exe
Token: 33	1460	dllhost.exe
Token: SeIncBasePriorityPrivilege	1460	dllhost.exe
Token: 33	1776	forvm.exe
Token: SeIncBasePriorityPrivilege	1776	forvm.exe
Token: 33	1460	dllhost.exe
Token: SeIncBasePriorityPrivilege	1460	dllhost.exe
Token: 33	1776	forvm.exe
Token: SeIncBasePriorityPrivilege	1776	forvm.exe
Token: 33	1460	dllhost.exe
Token: SeIncBasePriorityPrivilege	1460	dllhost.exe
Token: 33	1776	forvm.exe
Token: SeIncBasePriorityPrivilege	1776	forvm.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

forvm.exetmp6A77.tmp.exedllhost.exe

description	pid	process	target process
PID 1776 wrote to memory of 828	1776	forvm.exe	netsh.exe
PID 1776 wrote to memory of 828	1776	forvm.exe	netsh.exe
PID 1776 wrote to memory of 828	1776	forvm.exe	netsh.exe
PID 1776 wrote to memory of 828	1776	forvm.exe	netsh.exe
PID 1776 wrote to memory of 1760	1776	forvm.exe	tmp6A77.tmp.exe
PID 1776 wrote to memory of 1760	1776	forvm.exe	tmp6A77.tmp.exe
PID 1776 wrote to memory of 1760	1776	forvm.exe	tmp6A77.tmp.exe
PID 1776 wrote to memory of 1760	1776	forvm.exe	tmp6A77.tmp.exe
PID 1760 wrote to memory of 1460	1760	tmp6A77.tmp.exe	dllhost.exe
PID 1760 wrote to memory of 1460	1760	tmp6A77.tmp.exe	dllhost.exe
PID 1760 wrote to memory of 1460	1760	tmp6A77.tmp.exe	dllhost.exe
PID 1760 wrote to memory of 1460	1760	tmp6A77.tmp.exe	dllhost.exe
PID 1460 wrote to memory of 1936	1460	dllhost.exe	netsh.exe
PID 1460 wrote to memory of 1936	1460	dllhost.exe	netsh.exe
PID 1460 wrote to memory of 1936	1460	dllhost.exe	netsh.exe
PID 1460 wrote to memory of 1936	1460	dllhost.exe	netsh.exe
PID 1460 wrote to memory of 1808	1460	dllhost.exe	tmpCD5E.tmp.exe
PID 1460 wrote to memory of 1808	1460	dllhost.exe	tmpCD5E.tmp.exe
PID 1460 wrote to memory of 1808	1460	dllhost.exe	tmpCD5E.tmp.exe
PID 1460 wrote to memory of 1808	1460	dllhost.exe	tmpCD5E.tmp.exe

C:\Users\Admin\AppData\Local\Temp\forvm.exe
"C:\Users\Admin\AppData\Local\Temp\forvm.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1776

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\forvm.exe" "forvm.exe" ENABLE
2⤵
- Modifies Windows Firewall
PID:828

C:\Users\Admin\AppData\Local\Temp\tmp6A77.tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp6A77.tmp.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1760

C:\Users\Admin\AppData\Roaming\dllhost.exe
"C:\Users\Admin\AppData\Roaming\dllhost.exe"
3⤵
- Executes dropped EXE
- Drops startup file
- Loads dropped DLL
- Adds Run key to start application
- Drops autorun.inf file
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1460

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\dllhost.exe" "dllhost.exe" ENABLE
4⤵
- Modifies Windows Firewall
PID:1936

C:\Users\Admin\AppData\Local\Temp\tmpCD5E.tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmpCD5E.tmp.exe"
4⤵
- Executes dropped EXE
PID:1808

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Replication Through Removable Media

T1091

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Replication Through Removable Media

T1091

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp6A77.tmp.exe
Filesize
37KB

MD5
73196f394725a9623d84a512cdddf6ce

SHA1
4d24d92f70b2cbce52b1b173162b8f504ee7752f

SHA256
ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

SHA512
9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp6A77.tmp.exe
Filesize
37KB

MD5
73196f394725a9623d84a512cdddf6ce

SHA1
4d24d92f70b2cbce52b1b173162b8f504ee7752f

SHA256
ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

SHA512
9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpCD5E.tmp.exe
Filesize
37KB

MD5
1c34d0c6964ad975af3dd63fa9282e2e

SHA1
4b1a295f48590c84880a458bbedeafc1512641ee

SHA256
dde7dcf2831fc86f74315f05353ed60908fda5e8c8f2620fe160d63b266db471

SHA512
8b8d5f608c87c8c9ce7a3d1571b77e2f2962b2ac332b474467fddd43902e9a56d1af4eadd5976caa6237c57a691b02f44d96ef2bd436b9e092c569185e9af5d5

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpCD5E.tmp.exe
Filesize
37KB

MD5
1c34d0c6964ad975af3dd63fa9282e2e

SHA1
4b1a295f48590c84880a458bbedeafc1512641ee

SHA256
dde7dcf2831fc86f74315f05353ed60908fda5e8c8f2620fe160d63b266db471

SHA512
8b8d5f608c87c8c9ce7a3d1571b77e2f2962b2ac332b474467fddd43902e9a56d1af4eadd5976caa6237c57a691b02f44d96ef2bd436b9e092c569185e9af5d5

Download Submit
C:\Users\Admin\AppData\Roaming\dllhost.exe
Filesize
37KB

MD5
73196f394725a9623d84a512cdddf6ce

SHA1
4d24d92f70b2cbce52b1b173162b8f504ee7752f

SHA256
ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

SHA512
9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

Download Submit
C:\Users\Admin\AppData\Roaming\dllhost.exe
Filesize
37KB

MD5
73196f394725a9623d84a512cdddf6ce

SHA1
4d24d92f70b2cbce52b1b173162b8f504ee7752f

SHA256
ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

SHA512
9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

Download Submit
\Users\Admin\AppData\Local\Temp\tmp6A77.tmp.exe
Filesize
37KB

MD5
73196f394725a9623d84a512cdddf6ce

SHA1
4d24d92f70b2cbce52b1b173162b8f504ee7752f

SHA256
ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

SHA512
9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

Download Submit
\Users\Admin\AppData\Local\Temp\tmpCD5E.tmp.exe
Filesize
37KB

MD5
1c34d0c6964ad975af3dd63fa9282e2e

SHA1
4b1a295f48590c84880a458bbedeafc1512641ee

SHA256
dde7dcf2831fc86f74315f05353ed60908fda5e8c8f2620fe160d63b266db471

SHA512
8b8d5f608c87c8c9ce7a3d1571b77e2f2962b2ac332b474467fddd43902e9a56d1af4eadd5976caa6237c57a691b02f44d96ef2bd436b9e092c569185e9af5d5

Download Submit
\Users\Admin\AppData\Roaming\dllhost.exe
Filesize
37KB

MD5
73196f394725a9623d84a512cdddf6ce

SHA1
4d24d92f70b2cbce52b1b173162b8f504ee7752f

SHA256
ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

SHA512
9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

Download Submit
memory/828-56-0x0000000000000000-mapping.dmp

Download
memory/1460-66-0x0000000000000000-mapping.dmp

Download
memory/1460-71-0x0000000074880000-0x0000000074E2B000-memory.dmp

Filesize
5.7MB

Download
memory/1460-79-0x0000000074880000-0x0000000074E2B000-memory.dmp

Filesize
5.7MB

Download
memory/1760-64-0x0000000074880000-0x0000000074E2B000-memory.dmp

Filesize
5.7MB

Download
memory/1760-70-0x0000000074880000-0x0000000074E2B000-memory.dmp

Filesize
5.7MB

Download
memory/1760-60-0x0000000000000000-mapping.dmp

Download
memory/1776-54-0x00000000754A1000-0x00000000754A3000-memory.dmp

Filesize
8KB

Download
memory/1776-58-0x0000000074880000-0x0000000074E2B000-memory.dmp

Filesize
5.7MB

Download
memory/1776-55-0x0000000074880000-0x0000000074E2B000-memory.dmp

Filesize
5.7MB

Download
memory/1808-75-0x0000000000000000-mapping.dmp

Download
memory/1808-80-0x0000000074880000-0x0000000074E2B000-memory.dmp

Filesize
5.7MB

Download
memory/1808-81-0x0000000074880000-0x0000000074E2B000-memory.dmp

Filesize
5.7MB

Download
memory/1936-72-0x0000000000000000-mapping.dmp

Download