njrat | 8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7

General

Target

8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe
Size

352KB
MD5

efde8f7c97f533dbb5f6b44412f7e0e8
SHA1

32b42444d368b4531dd5b196fb8413201b876f30
SHA256

8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7
SHA512

9a6023d0f6d23c037c2a3bb296c328c12266a72b40d1bdf254bd901f1fe90157ff1678fcb8bee002e108a29986b05ecbc6431a1150c647decf2b57775b8747d6
SSDEEP

3072:rnyCcI+02me4sZh7Bl/D8C6yi/5rwWZsRPEY9wcDkSFwVxjhC9qOf5Zad77cN/b:vvU7jUyeEmsWuTo5vsWd7pvOU7HJ7M5

Score

10^/10

njrat w.w.w.w evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

w.w.w.w

C2

ksa-ok.ddns.net:1177

Mutex

3731b7c7eb0e242265ddcd1c2fa8c059

Attributes

reg_key
3731b7c7eb0e242265ddcd1c2fa8c059
splitter
|'|'|

Signatures

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

Processes:

prosek.exeprosek.exe

pid process

4076 prosek.exe
3720 prosek.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4496 netsh.exe

pid	process
4076	prosek.exe
3720	prosek.exe

pid	process
4496	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:

8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Control Panel\International\Geo\Nation	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe

Drops startup file 2 IoCs

Processes:

prosek.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3731b7c7eb0e242265ddcd1c2fa8c059.exe	prosek.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3731b7c7eb0e242265ddcd1c2fa8c059.exe	prosek.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

prosek.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\3731b7c7eb0e242265ddcd1c2fa8c059 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\prosek.exe\" .."	prosek.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\3731b7c7eb0e242265ddcd1c2fa8c059 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\prosek.exe\" .."	prosek.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exeprosek.exe

description	pid	process	target process
PID 2012 set thread context of 2008	2012	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe
PID 4076 set thread context of 3720	4076	prosek.exe	prosek.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 19 IoCs

Processes:

8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exeprosek.exeprosek.exe

description	pid	process
Token: SeDebugPrivilege	2012	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe
Token: SeDebugPrivilege	4076	prosek.exe
Token: SeDebugPrivilege	3720	prosek.exe
Token: 33	3720	prosek.exe
Token: SeIncBasePriorityPrivilege	3720	prosek.exe
Token: 33	3720	prosek.exe
Token: SeIncBasePriorityPrivilege	3720	prosek.exe
Token: 33	3720	prosek.exe
Token: SeIncBasePriorityPrivilege	3720	prosek.exe
Token: 33	3720	prosek.exe
Token: SeIncBasePriorityPrivilege	3720	prosek.exe
Token: 33	3720	prosek.exe
Token: SeIncBasePriorityPrivilege	3720	prosek.exe
Token: 33	3720	prosek.exe
Token: SeIncBasePriorityPrivilege	3720	prosek.exe
Token: 33	3720	prosek.exe
Token: SeIncBasePriorityPrivilege	3720	prosek.exe
Token: 33	3720	prosek.exe
Token: SeIncBasePriorityPrivilege	3720	prosek.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exeprosek.exeprosek.exe

description	pid	process	target process
PID 2012 wrote to memory of 2008	2012	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe
PID 2012 wrote to memory of 2008	2012	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe
PID 2012 wrote to memory of 2008	2012	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe
PID 2012 wrote to memory of 2008	2012	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe
PID 2012 wrote to memory of 2008	2012	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe
PID 2012 wrote to memory of 2008	2012	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe
PID 2012 wrote to memory of 2008	2012	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe
PID 2012 wrote to memory of 2008	2012	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe
PID 2008 wrote to memory of 4076	2008	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe	prosek.exe
PID 2008 wrote to memory of 4076	2008	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe	prosek.exe
PID 2008 wrote to memory of 4076	2008	8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe	prosek.exe
PID 4076 wrote to memory of 3720	4076	prosek.exe	prosek.exe
PID 4076 wrote to memory of 3720	4076	prosek.exe	prosek.exe
PID 4076 wrote to memory of 3720	4076	prosek.exe	prosek.exe
PID 4076 wrote to memory of 3720	4076	prosek.exe	prosek.exe
PID 4076 wrote to memory of 3720	4076	prosek.exe	prosek.exe
PID 4076 wrote to memory of 3720	4076	prosek.exe	prosek.exe
PID 4076 wrote to memory of 3720	4076	prosek.exe	prosek.exe
PID 4076 wrote to memory of 3720	4076	prosek.exe	prosek.exe
PID 3720 wrote to memory of 4496	3720	prosek.exe	netsh.exe
PID 3720 wrote to memory of 4496	3720	prosek.exe	netsh.exe
PID 3720 wrote to memory of 4496	3720	prosek.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe
"C:\Users\Admin\AppData\Local\Temp\8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2012

C:\Users\Admin\AppData\Local\Temp\8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe
C:\Users\Admin\AppData\Local\Temp\8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe
2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2008

C:\Users\Admin\AppData\Local\Temp\prosek.exe
"C:\Users\Admin\AppData\Local\Temp\prosek.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4076

C:\Users\Admin\AppData\Local\Temp\prosek.exe
C:\Users\Admin\AppData\Local\Temp\prosek.exe
4⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3720

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\prosek.exe" "prosek.exe" ENABLE
5⤵
- Modifies Windows Firewall
PID:4496

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\Microsoft\CLR_v2.0_32\UsageLogs\8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7.exe.log
Filesize
408B

MD5
e91022c75f1fa509d5e885934455081e

SHA1
cd2969406b78ad33a99dbd7ca4d1fa642b378803

SHA256
fa4e0be2df98aada3922e271a2a6af45975cd109aba4698627bb27a4f72e1851

SHA512
d89426367e230d7f4dddcce838d30f018965947ede3849e89c3cf345861db86a5ae7f83622444ba569e4e160977dcc7169507fa563bad8adb5a9d8cab8badd97

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\prosek.exe.log
Filesize
408B

MD5
e91022c75f1fa509d5e885934455081e

SHA1
cd2969406b78ad33a99dbd7ca4d1fa642b378803

SHA256
fa4e0be2df98aada3922e271a2a6af45975cd109aba4698627bb27a4f72e1851

SHA512
d89426367e230d7f4dddcce838d30f018965947ede3849e89c3cf345861db86a5ae7f83622444ba569e4e160977dcc7169507fa563bad8adb5a9d8cab8badd97

Download Submit
C:\Users\Admin\AppData\Local\Temp\prosek.exe
Filesize
352KB

MD5
efde8f7c97f533dbb5f6b44412f7e0e8

SHA1
32b42444d368b4531dd5b196fb8413201b876f30

SHA256
8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7

SHA512
9a6023d0f6d23c037c2a3bb296c328c12266a72b40d1bdf254bd901f1fe90157ff1678fcb8bee002e108a29986b05ecbc6431a1150c647decf2b57775b8747d6

Download Submit
C:\Users\Admin\AppData\Local\Temp\prosek.exe
Filesize
352KB

MD5
efde8f7c97f533dbb5f6b44412f7e0e8

SHA1
32b42444d368b4531dd5b196fb8413201b876f30

SHA256
8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7

SHA512
9a6023d0f6d23c037c2a3bb296c328c12266a72b40d1bdf254bd901f1fe90157ff1678fcb8bee002e108a29986b05ecbc6431a1150c647decf2b57775b8747d6

Download Submit
C:\Users\Admin\AppData\Local\Temp\prosek.exe
Filesize
352KB

MD5
efde8f7c97f533dbb5f6b44412f7e0e8

SHA1
32b42444d368b4531dd5b196fb8413201b876f30

SHA256
8103f3aba4d0dca4899bacc85a3f716f52ea505263ad559fb51db32bcc6d3da7

SHA512
9a6023d0f6d23c037c2a3bb296c328c12266a72b40d1bdf254bd901f1fe90157ff1678fcb8bee002e108a29986b05ecbc6431a1150c647decf2b57775b8747d6

Download Submit
memory/2008-135-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2008-138-0x00000000753E0000-0x0000000075991000-memory.dmp

Filesize
5.7MB

Download
memory/2008-134-0x0000000000000000-mapping.dmp

Download
memory/2008-142-0x00000000753E0000-0x0000000075991000-memory.dmp

Filesize
5.7MB

Download
memory/2012-133-0x00000000753E0000-0x0000000075991000-memory.dmp

Filesize
5.7MB

Download
memory/2012-132-0x00000000753E0000-0x0000000075991000-memory.dmp

Filesize
5.7MB

Download
memory/2012-137-0x00000000753E0000-0x0000000075991000-memory.dmp

Filesize
5.7MB

Download
memory/3720-143-0x0000000000000000-mapping.dmp

Download
memory/3720-148-0x00000000753E0000-0x0000000075991000-memory.dmp

Filesize
5.7MB

Download
memory/3720-149-0x00000000753E0000-0x0000000075991000-memory.dmp

Filesize
5.7MB

Download
memory/4076-139-0x0000000000000000-mapping.dmp

Download
memory/4076-147-0x00000000753E0000-0x0000000075991000-memory.dmp

Filesize
5.7MB

Download
memory/4496-150-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads