njrat | 2ebdc54023ba9d9328d53df24abbbf79301e9547485c24534970670993fad571

General

Target

2ebdc54023ba9d9328d53df24abbbf79301e9547485c24534970670993fad571.exe
Size

299KB
MD5

b3e1737f873cf6dcc4250ae42def1309
SHA1

9809d9eb05cdb810ec2a4884f6955e11a912efab
SHA256

2ebdc54023ba9d9328d53df24abbbf79301e9547485c24534970670993fad571
SHA512

c4a658c5e3af03ec30712975185bb11370c3d080890447285a99702048dda6e75bd3c53c3f1f2c7bbc5decd3531433db871fab7d3b95d9f8a7a0015851618c54

Score

10^/10

njrat svchost.exe evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

svchost.exe

C2

192.168.0.100:1604

Mutex

3f97945adf60540bc81f42cfa0c81e0c

Attributes

reg_key
3f97945adf60540bc81f42cfa0c81e0c
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Executes dropped EXE 2 IoCs

Processes:

SERVER.EXEsvchost.exe

pid process

4944 SERVER.EXE
4976 svchost.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

pid	process
4944	SERVER.EXE
4976	svchost.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

2ebdc54023ba9d9328d53df24abbbf79301e9547485c24534970670993fad571.exeSERVER.EXE

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	2ebdc54023ba9d9328d53df24abbbf79301e9547485c24534970670993fad571.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	SERVER.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\3f97945adf60540bc81f42cfa0c81e0c.exe	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3f97945adf60540bc81f42cfa0c81e0c.exe	svchost.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\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\3f97945adf60540bc81f42cfa0c81e0c = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\" .."	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\3f97945adf60540bc81f42cfa0c81e0c = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\" .."	svchost.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 17 IoCs

Processes:

svchost.exe

description	pid	process
Token: SeDebugPrivilege	4976	svchost.exe
Token: 33	4976	svchost.exe
Token: SeIncBasePriorityPrivilege	4976	svchost.exe
Token: 33	4976	svchost.exe
Token: SeIncBasePriorityPrivilege	4976	svchost.exe
Token: 33	4976	svchost.exe
Token: SeIncBasePriorityPrivilege	4976	svchost.exe
Token: 33	4976	svchost.exe
Token: SeIncBasePriorityPrivilege	4976	svchost.exe
Token: 33	4976	svchost.exe
Token: SeIncBasePriorityPrivilege	4976	svchost.exe
Token: 33	4976	svchost.exe
Token: SeIncBasePriorityPrivilege	4976	svchost.exe
Token: 33	4976	svchost.exe
Token: SeIncBasePriorityPrivilege	4976	svchost.exe
Token: 33	4976	svchost.exe
Token: SeIncBasePriorityPrivilege	4976	svchost.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

2ebdc54023ba9d9328d53df24abbbf79301e9547485c24534970670993fad571.exeSERVER.EXEsvchost.exe

description	pid	process	target process
PID 740 wrote to memory of 4944	740	2ebdc54023ba9d9328d53df24abbbf79301e9547485c24534970670993fad571.exe	SERVER.EXE
PID 740 wrote to memory of 4944	740	2ebdc54023ba9d9328d53df24abbbf79301e9547485c24534970670993fad571.exe	SERVER.EXE
PID 740 wrote to memory of 4944	740	2ebdc54023ba9d9328d53df24abbbf79301e9547485c24534970670993fad571.exe	SERVER.EXE
PID 4944 wrote to memory of 4976	4944	SERVER.EXE	svchost.exe
PID 4944 wrote to memory of 4976	4944	SERVER.EXE	svchost.exe
PID 4944 wrote to memory of 4976	4944	SERVER.EXE	svchost.exe
PID 4976 wrote to memory of 2660	4976	svchost.exe	netsh.exe
PID 4976 wrote to memory of 2660	4976	svchost.exe	netsh.exe
PID 4976 wrote to memory of 2660	4976	svchost.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\2ebdc54023ba9d9328d53df24abbbf79301e9547485c24534970670993fad571.exe
"C:\Users\Admin\AppData\Local\Temp\2ebdc54023ba9d9328d53df24abbbf79301e9547485c24534970670993fad571.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:740

C:\Users\Admin\AppData\Local\Temp\SERVER.EXE
"C:\Users\Admin\AppData\Local\Temp\SERVER.EXE"
2⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4944

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
3⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4976

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\svchost.exe" "svchost.exe" ENABLE
4⤵
PID:2660

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\SERVER.EXE
Filesize
37KB

MD5
3c9e368739b3d1d9fa1eef0f8d9a55e0

SHA1
61020dbcf08a36161d90a332ac8481cc9629dc2f

SHA256
4ef17574b7e29d2de73d524dc7f7ef1b2835e4e04d11ed895113be2a32f57dc1

SHA512
9f34cf327447c2794f9b346a9c5832347f33bcfc9aeb97055e8b445ebe492a4088a2f6977f3c812631c9250a83d3038b8866a9040b33781141edfc195a4fc8a3

Download Submit
C:\Users\Admin\AppData\Local\Temp\SERVER.EXE
Filesize
37KB

MD5
3c9e368739b3d1d9fa1eef0f8d9a55e0

SHA1
61020dbcf08a36161d90a332ac8481cc9629dc2f

SHA256
4ef17574b7e29d2de73d524dc7f7ef1b2835e4e04d11ed895113be2a32f57dc1

SHA512
9f34cf327447c2794f9b346a9c5832347f33bcfc9aeb97055e8b445ebe492a4088a2f6977f3c812631c9250a83d3038b8866a9040b33781141edfc195a4fc8a3

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

MD5
3c9e368739b3d1d9fa1eef0f8d9a55e0

SHA1
61020dbcf08a36161d90a332ac8481cc9629dc2f

SHA256
4ef17574b7e29d2de73d524dc7f7ef1b2835e4e04d11ed895113be2a32f57dc1

SHA512
9f34cf327447c2794f9b346a9c5832347f33bcfc9aeb97055e8b445ebe492a4088a2f6977f3c812631c9250a83d3038b8866a9040b33781141edfc195a4fc8a3

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

MD5
3c9e368739b3d1d9fa1eef0f8d9a55e0

SHA1
61020dbcf08a36161d90a332ac8481cc9629dc2f

SHA256
4ef17574b7e29d2de73d524dc7f7ef1b2835e4e04d11ed895113be2a32f57dc1

SHA512
9f34cf327447c2794f9b346a9c5832347f33bcfc9aeb97055e8b445ebe492a4088a2f6977f3c812631c9250a83d3038b8866a9040b33781141edfc195a4fc8a3

Download Submit
memory/2660-138-0x0000000000000000-mapping.dmp

Download
memory/4944-130-0x0000000000000000-mapping.dmp

Download
memory/4944-133-0x0000000074EE0000-0x0000000075491000-memory.dmp

Filesize
5.7MB

Download
memory/4976-134-0x0000000000000000-mapping.dmp

Download
memory/4976-137-0x0000000074EE0000-0x0000000075491000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads