njrat | 6cf2ebb06c8534930bd6b309390a4fbaf18be95a0193dca8f0ff29c89abe6ea1

General

Target

6cf2ebb06c8534930bd6b309390a4fbaf18be95a0193dca8f0ff29c89abe6ea1.exe
Size

500KB
MD5

01e3617a09cca6d34fe3a39d34adc974
SHA1

cac71a437ef1b9411488bdb4959403c9d859d6dd
SHA256

6cf2ebb06c8534930bd6b309390a4fbaf18be95a0193dca8f0ff29c89abe6ea1
SHA512

3d13f75a43baffffbbf9fb65321d45280d93a21760342ba177b691dfab2f4d775b281df59e64c605c9f058144544adfb3536a4cddd2958f9836a923869601641
SSDEEP

12288:s4vvfwYw2Q79D6H9QkbURy/ZjbbkPrreri0H+/5SiufX:s+fTb9tISiuf

Score

10^/10

njrat evasion persistence trojan

Malware Config

Signatures

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

Processes:

tasKhost.exe

pid process

1324 tasKhost.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1788 netsh.exe

pid	process
1324	tasKhost.exe

pid	process
1788	netsh.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

6cf2ebb06c8534930bd6b309390a4fbaf18be95a0193dca8f0ff29c89abe6ea1.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	6cf2ebb06c8534930bd6b309390a4fbaf18be95a0193dca8f0ff29c89abe6ea1.exe

Drops startup file 2 IoCs

Processes:

tasKhost.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\08bc187b2184bd9ab682246d641afdd6.exe	tasKhost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\08bc187b2184bd9ab682246d641afdd6.exe	tasKhost.exe

Adds Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

6cf2ebb06c8534930bd6b309390a4fbaf18be95a0193dca8f0ff29c89abe6ea1.exetasKhost.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	6cf2ebb06c8534930bd6b309390a4fbaf18be95a0193dca8f0ff29c89abe6ea1.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\18.exe = "C:\\Users\\Admin\\AppData\\RoamingDocumentos\\18.exe"	6cf2ebb06c8534930bd6b309390a4fbaf18be95a0193dca8f0ff29c89abe6ea1.exe
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	tasKhost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\18.exe = "C:\\Users\\Admin\\AppData\\RoamingDocumentos\\18.exe"	tasKhost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\08bc187b2184bd9ab682246d641afdd6 = "\"C:\\Users\\Admin\\AppData\\Roaming\\tasKhost.exe\" .."	tasKhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\08bc187b2184bd9ab682246d641afdd6 = "\"C:\\Users\\Admin\\AppData\\Roaming\\tasKhost.exe\" .."	tasKhost.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 15 IoCs

Processes:

tasKhost.exe

description	pid	process
Token: SeDebugPrivilege	1324	tasKhost.exe
Token: 33	1324	tasKhost.exe
Token: SeIncBasePriorityPrivilege	1324	tasKhost.exe
Token: 33	1324	tasKhost.exe
Token: SeIncBasePriorityPrivilege	1324	tasKhost.exe
Token: 33	1324	tasKhost.exe
Token: SeIncBasePriorityPrivilege	1324	tasKhost.exe
Token: 33	1324	tasKhost.exe
Token: SeIncBasePriorityPrivilege	1324	tasKhost.exe
Token: 33	1324	tasKhost.exe
Token: SeIncBasePriorityPrivilege	1324	tasKhost.exe
Token: 33	1324	tasKhost.exe
Token: SeIncBasePriorityPrivilege	1324	tasKhost.exe
Token: 33	1324	tasKhost.exe
Token: SeIncBasePriorityPrivilege	1324	tasKhost.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

6cf2ebb06c8534930bd6b309390a4fbaf18be95a0193dca8f0ff29c89abe6ea1.exetasKhost.exe

description	pid	process	target process
PID 4100 wrote to memory of 1324	4100	6cf2ebb06c8534930bd6b309390a4fbaf18be95a0193dca8f0ff29c89abe6ea1.exe	tasKhost.exe
PID 4100 wrote to memory of 1324	4100	6cf2ebb06c8534930bd6b309390a4fbaf18be95a0193dca8f0ff29c89abe6ea1.exe	tasKhost.exe
PID 4100 wrote to memory of 1324	4100	6cf2ebb06c8534930bd6b309390a4fbaf18be95a0193dca8f0ff29c89abe6ea1.exe	tasKhost.exe
PID 1324 wrote to memory of 1788	1324	tasKhost.exe	netsh.exe
PID 1324 wrote to memory of 1788	1324	tasKhost.exe	netsh.exe
PID 1324 wrote to memory of 1788	1324	tasKhost.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\6cf2ebb06c8534930bd6b309390a4fbaf18be95a0193dca8f0ff29c89abe6ea1.exe
"C:\Users\Admin\AppData\Local\Temp\6cf2ebb06c8534930bd6b309390a4fbaf18be95a0193dca8f0ff29c89abe6ea1.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4100

C:\Users\Admin\AppData\Roaming\tasKhost.exe
"C:\Users\Admin\AppData\Roaming\tasKhost.exe"
2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1324

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\tasKhost.exe" "tasKhost.exe" ENABLE
3⤵
- Modifies Windows Firewall
PID:1788

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\tasKhost.exe

Filesize
500KB

MD5
01e3617a09cca6d34fe3a39d34adc974

SHA1
cac71a437ef1b9411488bdb4959403c9d859d6dd

SHA256
6cf2ebb06c8534930bd6b309390a4fbaf18be95a0193dca8f0ff29c89abe6ea1

SHA512
3d13f75a43baffffbbf9fb65321d45280d93a21760342ba177b691dfab2f4d775b281df59e64c605c9f058144544adfb3536a4cddd2958f9836a923869601641

Download Submit
C:\Users\Admin\AppData\Roaming\tasKhost.exe

Filesize
500KB

MD5
01e3617a09cca6d34fe3a39d34adc974

SHA1
cac71a437ef1b9411488bdb4959403c9d859d6dd

SHA256
6cf2ebb06c8534930bd6b309390a4fbaf18be95a0193dca8f0ff29c89abe6ea1

SHA512
3d13f75a43baffffbbf9fb65321d45280d93a21760342ba177b691dfab2f4d775b281df59e64c605c9f058144544adfb3536a4cddd2958f9836a923869601641

Download Submit
memory/1324-134-0x0000000000000000-mapping.dmp

Download
memory/1324-138-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/1324-139-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/1788-140-0x0000000000000000-mapping.dmp

Download
memory/4100-132-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4100-133-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4100-137-0x0000000074710000-0x0000000074CC1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads