njrat | 450d3fdecc625471e44a09e734e5e0be6726c38ec22287ef3b00a8d02f0cb14e

General

Target

450d3fdecc625471e44a09e734e5e0be6726c38ec22287ef3b00a8d02f0cb14e.exe
Size

23KB
MD5

83613809ed6ddcc2a5dc78f96f5b3d61
SHA1

e751f2e56f5ede488bfb694617f592201e1d03c8
SHA256

450d3fdecc625471e44a09e734e5e0be6726c38ec22287ef3b00a8d02f0cb14e
SHA512

03c22d3836ec7d3bb5b2f0449153746e6fda6305f24aaa592c512ded6c15fcc7e04133d6aae4aaf1091e682e3fd9b60c44b6f18b52f290b79ea5599e4fbf87b8
SSDEEP

384:Cc6ze6e1PAhJVzC3tC1im/BsTx46PgZ0rap9HBmRvR6JZlbw8hqIusZzZRX:ie9EJLN/yRpcnua

Score

10^/10

njrat lamer evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

lamer

C2

pivtgavera.no-ip.org:2000

Mutex

737faf37dce0d373721f952e085bf76b

Attributes

reg_key
737faf37dce0d373721f952e085bf76b
splitter
|'|'|

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
984	chrome.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1912	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	450d3fdecc625471e44a09e734e5e0be6726c38ec22287ef3b00a8d02f0cb14e.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\737faf37dce0d373721f952e085bf76b.exe	chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\737faf37dce0d373721f952e085bf76b.exe	chrome.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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\737faf37dce0d373721f952e085bf76b = "\"C:\\Users\\Admin\\chrome.exe\" .."	chrome.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\737faf37dce0d373721f952e085bf76b = "\"C:\\Users\\Admin\\chrome.exe\" .."	chrome.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 29 IoCs

description	pid	Process
Token: SeDebugPrivilege	984	chrome.exe
Token: 33	984	chrome.exe
Token: SeIncBasePriorityPrivilege	984	chrome.exe
Token: 33	984	chrome.exe
Token: SeIncBasePriorityPrivilege	984	chrome.exe
Token: 33	984	chrome.exe
Token: SeIncBasePriorityPrivilege	984	chrome.exe
Token: 33	984	chrome.exe
Token: SeIncBasePriorityPrivilege	984	chrome.exe
Token: 33	984	chrome.exe
Token: SeIncBasePriorityPrivilege	984	chrome.exe
Token: 33	984	chrome.exe
Token: SeIncBasePriorityPrivilege	984	chrome.exe
Token: 33	984	chrome.exe
Token: SeIncBasePriorityPrivilege	984	chrome.exe
Token: 33	984	chrome.exe
Token: SeIncBasePriorityPrivilege	984	chrome.exe
Token: 33	984	chrome.exe
Token: SeIncBasePriorityPrivilege	984	chrome.exe
Token: 33	984	chrome.exe
Token: SeIncBasePriorityPrivilege	984	chrome.exe
Token: 33	984	chrome.exe
Token: SeIncBasePriorityPrivilege	984	chrome.exe
Token: 33	984	chrome.exe
Token: SeIncBasePriorityPrivilege	984	chrome.exe
Token: 33	984	chrome.exe
Token: SeIncBasePriorityPrivilege	984	chrome.exe
Token: 33	984	chrome.exe
Token: SeIncBasePriorityPrivilege	984	chrome.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2688 wrote to memory of 984	2688	450d3fdecc625471e44a09e734e5e0be6726c38ec22287ef3b00a8d02f0cb14e.exe	82
PID 2688 wrote to memory of 984	2688	450d3fdecc625471e44a09e734e5e0be6726c38ec22287ef3b00a8d02f0cb14e.exe	82
PID 2688 wrote to memory of 984	2688	450d3fdecc625471e44a09e734e5e0be6726c38ec22287ef3b00a8d02f0cb14e.exe	82
PID 984 wrote to memory of 1912	984	chrome.exe	87
PID 984 wrote to memory of 1912	984	chrome.exe	87
PID 984 wrote to memory of 1912	984	chrome.exe	87

C:\Users\Admin\AppData\Local\Temp\450d3fdecc625471e44a09e734e5e0be6726c38ec22287ef3b00a8d02f0cb14e.exe
"C:\Users\Admin\AppData\Local\Temp\450d3fdecc625471e44a09e734e5e0be6726c38ec22287ef3b00a8d02f0cb14e.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2688
- C:\Users\Admin\chrome.exe
  "C:\Users\Admin\chrome.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:984
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\chrome.exe" "chrome.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:1912

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\chrome.exe

Filesize
23KB

MD5
83613809ed6ddcc2a5dc78f96f5b3d61

SHA1
e751f2e56f5ede488bfb694617f592201e1d03c8

SHA256
450d3fdecc625471e44a09e734e5e0be6726c38ec22287ef3b00a8d02f0cb14e

SHA512
03c22d3836ec7d3bb5b2f0449153746e6fda6305f24aaa592c512ded6c15fcc7e04133d6aae4aaf1091e682e3fd9b60c44b6f18b52f290b79ea5599e4fbf87b8

Download Submit
C:\Users\Admin\chrome.exe

Filesize
23KB

MD5
83613809ed6ddcc2a5dc78f96f5b3d61

SHA1
e751f2e56f5ede488bfb694617f592201e1d03c8

SHA256
450d3fdecc625471e44a09e734e5e0be6726c38ec22287ef3b00a8d02f0cb14e

SHA512
03c22d3836ec7d3bb5b2f0449153746e6fda6305f24aaa592c512ded6c15fcc7e04133d6aae4aaf1091e682e3fd9b60c44b6f18b52f290b79ea5599e4fbf87b8

Download Submit
memory/984-137-0x0000000075440000-0x00000000759F1000-memory.dmp

Filesize
5.7MB

Download
memory/984-138-0x0000000075440000-0x00000000759F1000-memory.dmp

Filesize
5.7MB

Download
memory/2688-132-0x0000000075440000-0x00000000759F1000-memory.dmp

Filesize
5.7MB

Download
memory/2688-136-0x0000000075440000-0x00000000759F1000-memory.dmp

Filesize
5.7MB

Download

Analysis

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