njrat | c3979a46ce3c67248d5423faca1f686604c44c443931d673d48b4375c29f327d

General

Target

c3979a46ce3c67248d5423faca1f686604c44c443931d673d48b4375c29f327d.exe
Size

80KB
MD5

828172a3ff048806faaf617afcc30760
SHA1

cb05a78d65a40cf0290493b85dbc6e389b47ba7e
SHA256

c3979a46ce3c67248d5423faca1f686604c44c443931d673d48b4375c29f327d
SHA512

4fca596aa7e4536abcbc7749dcecc1517da3b9dc6d6e658e9fa412b2222d6f29ec3f5f40bfafc1dd367bb8e4bf72d521228d3573a5b239e1a2183ae5c3feaf2b
SSDEEP

1536:LLBdSTGw6mWXphu7ZX0h7TyL40Sg8/S7YcjpnvtlZ9+:L14G3mMYX+KSB/WDjVZ9+

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

pid	Process
4760	Google Update.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
2892	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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	c3979a46ce3c67248d5423faca1f686604c44c443931d673d48b4375c29f327d.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d7773c2d4d91f6ec0831d702fab42472.exe	Google Update.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d7773c2d4d91f6ec0831d702fab42472.exe	Google Update.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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\d7773c2d4d91f6ec0831d702fab42472 = "\"C:\\Users\\Admin\\AppData\\Roaming\\Google Update.exe\" .."	Google Update.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\d7773c2d4d91f6ec0831d702fab42472 = "\"C:\\Users\\Admin\\AppData\\Roaming\\Google Update.exe\" .."	Google Update.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 31 IoCs

description	pid	Process
Token: SeDebugPrivilege	4760	Google Update.exe
Token: 33	4760	Google Update.exe
Token: SeIncBasePriorityPrivilege	4760	Google Update.exe
Token: 33	4760	Google Update.exe
Token: SeIncBasePriorityPrivilege	4760	Google Update.exe
Token: 33	4760	Google Update.exe
Token: SeIncBasePriorityPrivilege	4760	Google Update.exe
Token: 33	4760	Google Update.exe
Token: SeIncBasePriorityPrivilege	4760	Google Update.exe
Token: 33	4760	Google Update.exe
Token: SeIncBasePriorityPrivilege	4760	Google Update.exe
Token: 33	4760	Google Update.exe
Token: SeIncBasePriorityPrivilege	4760	Google Update.exe
Token: 33	4760	Google Update.exe
Token: SeIncBasePriorityPrivilege	4760	Google Update.exe
Token: 33	4760	Google Update.exe
Token: SeIncBasePriorityPrivilege	4760	Google Update.exe
Token: 33	4760	Google Update.exe
Token: SeIncBasePriorityPrivilege	4760	Google Update.exe
Token: 33	4760	Google Update.exe
Token: SeIncBasePriorityPrivilege	4760	Google Update.exe
Token: 33	4760	Google Update.exe
Token: SeIncBasePriorityPrivilege	4760	Google Update.exe
Token: 33	4760	Google Update.exe
Token: SeIncBasePriorityPrivilege	4760	Google Update.exe
Token: 33	4760	Google Update.exe
Token: SeIncBasePriorityPrivilege	4760	Google Update.exe
Token: 33	4760	Google Update.exe
Token: SeIncBasePriorityPrivilege	4760	Google Update.exe
Token: 33	4760	Google Update.exe
Token: SeIncBasePriorityPrivilege	4760	Google Update.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1664 wrote to memory of 4760	1664	c3979a46ce3c67248d5423faca1f686604c44c443931d673d48b4375c29f327d.exe	83
PID 1664 wrote to memory of 4760	1664	c3979a46ce3c67248d5423faca1f686604c44c443931d673d48b4375c29f327d.exe	83
PID 1664 wrote to memory of 4760	1664	c3979a46ce3c67248d5423faca1f686604c44c443931d673d48b4375c29f327d.exe	83
PID 4760 wrote to memory of 2892	4760	Google Update.exe	84
PID 4760 wrote to memory of 2892	4760	Google Update.exe	84
PID 4760 wrote to memory of 2892	4760	Google Update.exe	84

C:\Users\Admin\AppData\Local\Temp\c3979a46ce3c67248d5423faca1f686604c44c443931d673d48b4375c29f327d.exe
"C:\Users\Admin\AppData\Local\Temp\c3979a46ce3c67248d5423faca1f686604c44c443931d673d48b4375c29f327d.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1664
- C:\Users\Admin\AppData\Roaming\Google Update.exe
  "C:\Users\Admin\AppData\Roaming\Google Update.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4760
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Google Update.exe" "Google Update.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:2892

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Google Update.exe

Filesize
80KB

MD5
828172a3ff048806faaf617afcc30760

SHA1
cb05a78d65a40cf0290493b85dbc6e389b47ba7e

SHA256
c3979a46ce3c67248d5423faca1f686604c44c443931d673d48b4375c29f327d

SHA512
4fca596aa7e4536abcbc7749dcecc1517da3b9dc6d6e658e9fa412b2222d6f29ec3f5f40bfafc1dd367bb8e4bf72d521228d3573a5b239e1a2183ae5c3feaf2b

Download Submit
C:\Users\Admin\AppData\Roaming\Google Update.exe

Filesize
80KB

MD5
828172a3ff048806faaf617afcc30760

SHA1
cb05a78d65a40cf0290493b85dbc6e389b47ba7e

SHA256
c3979a46ce3c67248d5423faca1f686604c44c443931d673d48b4375c29f327d

SHA512
4fca596aa7e4536abcbc7749dcecc1517da3b9dc6d6e658e9fa412b2222d6f29ec3f5f40bfafc1dd367bb8e4bf72d521228d3573a5b239e1a2183ae5c3feaf2b

Download Submit
memory/1664-132-0x0000000074640000-0x0000000074BF1000-memory.dmp

Filesize
5.7MB

Download
memory/1664-137-0x0000000074640000-0x0000000074BF1000-memory.dmp

Filesize
5.7MB

Download
memory/4760-136-0x0000000074640000-0x0000000074BF1000-memory.dmp

Filesize
5.7MB

Download
memory/4760-139-0x0000000074640000-0x0000000074BF1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing