njrat | 716ccff99841ebfadb22084138249b9a99f368d0ca123ab413cab5108468e692

General

Target

716ccff99841ebfadb22084138249b9a99f368d0ca123ab413cab5108468e692.exe
Size

23KB
MD5

0d4530f3d79ac68215858c445326f2e5
SHA1

39a65a53d21b8b9d5df30888900c8a8484acac5a
SHA256

716ccff99841ebfadb22084138249b9a99f368d0ca123ab413cab5108468e692
SHA512

60c90d547fae29556badbddef8ffeb6c68e2fcc841be9c406bbe6bcb25452183f3dcee176a42591494b06539129590708a6582243951523ac43dec55ad9bf4bc
SSDEEP

384:tcqbCK0l4h7o9SVyDGvENxh461gJkOmMSW38mRvR6JZlbw8hqIusZzZNv:+30py6vYxaRpcnu6

Score

10^/10

njrat sam evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

SAM

C2

samhkr13.ddns.net:5552

Mutex

b5b7c5b511866ccc1b4ee34756a8ec79

Attributes

reg_key
b5b7c5b511866ccc1b4ee34756a8ec79
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Executes dropped EXE 1 IoCs

pid	Process
4484	server.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
4860	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	716ccff99841ebfadb22084138249b9a99f368d0ca123ab413cab5108468e692.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b5b7c5b511866ccc1b4ee34756a8ec79 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\b5b7c5b511866ccc1b4ee34756a8ec79 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.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 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	4484	server.exe
Token: 33	4484	server.exe
Token: SeIncBasePriorityPrivilege	4484	server.exe
Token: 33	4484	server.exe
Token: SeIncBasePriorityPrivilege	4484	server.exe
Token: 33	4484	server.exe
Token: SeIncBasePriorityPrivilege	4484	server.exe
Token: 33	4484	server.exe
Token: SeIncBasePriorityPrivilege	4484	server.exe
Token: 33	4484	server.exe
Token: SeIncBasePriorityPrivilege	4484	server.exe
Token: 33	4484	server.exe
Token: SeIncBasePriorityPrivilege	4484	server.exe
Token: 33	4484	server.exe
Token: SeIncBasePriorityPrivilege	4484	server.exe
Token: 33	4484	server.exe
Token: SeIncBasePriorityPrivilege	4484	server.exe
Token: 33	4484	server.exe
Token: SeIncBasePriorityPrivilege	4484	server.exe
Token: 33	4484	server.exe
Token: SeIncBasePriorityPrivilege	4484	server.exe
Token: 33	4484	server.exe
Token: SeIncBasePriorityPrivilege	4484	server.exe
Token: 33	4484	server.exe
Token: SeIncBasePriorityPrivilege	4484	server.exe
Token: 33	4484	server.exe
Token: SeIncBasePriorityPrivilege	4484	server.exe
Token: 33	4484	server.exe
Token: SeIncBasePriorityPrivilege	4484	server.exe
Token: 33	4484	server.exe
Token: SeIncBasePriorityPrivilege	4484	server.exe
Token: 33	4484	server.exe
Token: SeIncBasePriorityPrivilege	4484	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4532 wrote to memory of 4484	4532	716ccff99841ebfadb22084138249b9a99f368d0ca123ab413cab5108468e692.exe	80
PID 4532 wrote to memory of 4484	4532	716ccff99841ebfadb22084138249b9a99f368d0ca123ab413cab5108468e692.exe	80
PID 4532 wrote to memory of 4484	4532	716ccff99841ebfadb22084138249b9a99f368d0ca123ab413cab5108468e692.exe	80
PID 4484 wrote to memory of 4860	4484	server.exe	81
PID 4484 wrote to memory of 4860	4484	server.exe	81
PID 4484 wrote to memory of 4860	4484	server.exe	81

C:\Users\Admin\AppData\Local\Temp\716ccff99841ebfadb22084138249b9a99f368d0ca123ab413cab5108468e692.exe
"C:\Users\Admin\AppData\Local\Temp\716ccff99841ebfadb22084138249b9a99f368d0ca123ab413cab5108468e692.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4532
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4484
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:4860

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\Local\Temp\server.exe

Filesize
23KB

MD5
0d4530f3d79ac68215858c445326f2e5

SHA1
39a65a53d21b8b9d5df30888900c8a8484acac5a

SHA256
716ccff99841ebfadb22084138249b9a99f368d0ca123ab413cab5108468e692

SHA512
60c90d547fae29556badbddef8ffeb6c68e2fcc841be9c406bbe6bcb25452183f3dcee176a42591494b06539129590708a6582243951523ac43dec55ad9bf4bc

Download Submit
C:\Users\Admin\AppData\Local\Temp\server.exe

Filesize
23KB

MD5
0d4530f3d79ac68215858c445326f2e5

SHA1
39a65a53d21b8b9d5df30888900c8a8484acac5a

SHA256
716ccff99841ebfadb22084138249b9a99f368d0ca123ab413cab5108468e692

SHA512
60c90d547fae29556badbddef8ffeb6c68e2fcc841be9c406bbe6bcb25452183f3dcee176a42591494b06539129590708a6582243951523ac43dec55ad9bf4bc

Download Submit
memory/4484-137-0x0000000075010000-0x00000000755C1000-memory.dmp

Filesize
5.7MB

Download
memory/4484-139-0x0000000075010000-0x00000000755C1000-memory.dmp

Filesize
5.7MB

Download
memory/4532-132-0x0000000075010000-0x00000000755C1000-memory.dmp

Filesize
5.7MB

Download
memory/4532-136-0x0000000075010000-0x00000000755C1000-memory.dmp

Filesize
5.7MB

Download

Analysis

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