njrat | b582a072dd59fcb9c53886ee635bea3e052650e8b3886e1a024acc67fe5c180a

Analysis

max time kernel
159s
max time network
166s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
13/10/2023, 05:41

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General

Target
b63d678ce2b4e5625266f6a0be13598f.exe
Size 360KB
Sample231013-gde39sfa8t
SHA256 b582a072dd59fcb9c53886ee635bea3e052650e8b3886e1a024acc67fe5c180a
MD5 b63d678ce2b4e5625266f6a0be13598f
SHA1 fbe4cdf506adae973e014ae6c7102249200ed80b
SHA512 a5d4ed737aec571d08434a17d2f06996016bb20344b843bd43bdd84cf6cf143e8ede4d88279e94c7b930960315b40131c2c9518efda9806340588039dd57afe5
SSDEEP 3072:KLd/xWvIKEgRDerABNZKGiy5LYxHU0g/Dr7WI11Igf5PAADiNebOM8XOs:KZx5KLk+XKGdLuk1KgWNO
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

njrat evasion persistence trojan

Malware Config

Signatures

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

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Windows Service

T1543.003

pid	Process
4972	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-1-5-21-1574508946-349927670-1185736483-1000\Control Panel\International\Geo\Nation	b63d678ce2b4e5625266f6a0be13598f.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\7e6b5de3e001f4cb597cac4152eacd8b.exe	Office.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\7e6b5de3e001f4cb597cac4152eacd8b.exe	Office.exe

Executes dropped EXE 1 IoCs

pid	Process
3784	Office.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\7e6b5de3e001f4cb597cac4152eacd8b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Office.exe\" .."	Office.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\7e6b5de3e001f4cb597cac4152eacd8b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Office.exe\" .."	Office.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 31 IoCs

description	pid	Process
Token: SeDebugPrivilege	3784	Office.exe
Token: 33	3784	Office.exe
Token: SeIncBasePriorityPrivilege	3784	Office.exe
Token: 33	3784	Office.exe
Token: SeIncBasePriorityPrivilege	3784	Office.exe
Token: 33	3784	Office.exe
Token: SeIncBasePriorityPrivilege	3784	Office.exe
Token: 33	3784	Office.exe
Token: SeIncBasePriorityPrivilege	3784	Office.exe
Token: 33	3784	Office.exe
Token: SeIncBasePriorityPrivilege	3784	Office.exe
Token: 33	3784	Office.exe
Token: SeIncBasePriorityPrivilege	3784	Office.exe
Token: 33	3784	Office.exe
Token: SeIncBasePriorityPrivilege	3784	Office.exe
Token: 33	3784	Office.exe
Token: SeIncBasePriorityPrivilege	3784	Office.exe
Token: 33	3784	Office.exe
Token: SeIncBasePriorityPrivilege	3784	Office.exe
Token: 33	3784	Office.exe
Token: SeIncBasePriorityPrivilege	3784	Office.exe
Token: 33	3784	Office.exe
Token: SeIncBasePriorityPrivilege	3784	Office.exe
Token: 33	3784	Office.exe
Token: SeIncBasePriorityPrivilege	3784	Office.exe
Token: 33	3784	Office.exe
Token: SeIncBasePriorityPrivilege	3784	Office.exe
Token: 33	3784	Office.exe
Token: SeIncBasePriorityPrivilege	3784	Office.exe
Token: 33	3784	Office.exe
Token: SeIncBasePriorityPrivilege	3784	Office.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4692 wrote to memory of 3784	4692	b63d678ce2b4e5625266f6a0be13598f.exe	88
PID 4692 wrote to memory of 3784	4692	b63d678ce2b4e5625266f6a0be13598f.exe	88
PID 4692 wrote to memory of 3784	4692	b63d678ce2b4e5625266f6a0be13598f.exe	88
PID 3784 wrote to memory of 4972	3784	Office.exe	94
PID 3784 wrote to memory of 4972	3784	Office.exe	94
PID 3784 wrote to memory of 4972	3784	Office.exe	94

C:\Users\Admin\AppData\Local\Temp\b63d678ce2b4e5625266f6a0be13598f.exe
"C:\Users\Admin\AppData\Local\Temp\b63d678ce2b4e5625266f6a0be13598f.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4692
- C:\Users\Admin\AppData\Local\Temp\Office.exe
  "C:\Users\Admin\AppData\Local\Temp\Office.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3784
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Office.exe" "Office.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:4972

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

Office.exe

Path C:\Users\Admin\AppData\Local\Temp\Office.exe
Size 360KB
SHA256 b582a072dd59fcb9c53886ee635bea3e052650e8b3886e1a024acc67fe5c180a
MD5 b63d678ce2b4e5625266f6a0be13598f
SHA1 fbe4cdf506adae973e014ae6c7102249200ed80b
SHA512 a5d4ed737aec571d08434a17d2f06996016bb20344b843bd43bdd84cf6cf143e8ede4d88279e94c7b930960315b40131c2c9518efda9806340588039dd57afe5
SSDEEP 3072:KLd/xWvIKEgRDerABNZKGiy5LYxHU0g/Dr7WI11Igf5PAADiNebOM8XOs:KZx5KLk+XKGdLuk1KgWNO
MD5 SHA1 SHA512 SSDEEP

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Office.exe

Path C:\Users\Admin\AppData\Local\Temp\Office.exe
Size 360KB
SHA256 b582a072dd59fcb9c53886ee635bea3e052650e8b3886e1a024acc67fe5c180a
MD5 b63d678ce2b4e5625266f6a0be13598f
SHA1 fbe4cdf506adae973e014ae6c7102249200ed80b
SHA512 a5d4ed737aec571d08434a17d2f06996016bb20344b843bd43bdd84cf6cf143e8ede4d88279e94c7b930960315b40131c2c9518efda9806340588039dd57afe5
SSDEEP 3072:KLd/xWvIKEgRDerABNZKGiy5LYxHU0g/Dr7WI11Igf5PAADiNebOM8XOs:KZx5KLk+XKGdLuk1KgWNO
MD5 SHA1 SHA512 SSDEEP

Submit Download

Office.exe

Path C:\Users\Admin\AppData\Local\Temp\Office.exe
Size 360KB
SHA256 b582a072dd59fcb9c53886ee635bea3e052650e8b3886e1a024acc67fe5c180a
MD5 b63d678ce2b4e5625266f6a0be13598f
SHA1 fbe4cdf506adae973e014ae6c7102249200ed80b
SHA512 a5d4ed737aec571d08434a17d2f06996016bb20344b843bd43bdd84cf6cf143e8ede4d88279e94c7b930960315b40131c2c9518efda9806340588039dd57afe5
SSDEEP 3072:KLd/xWvIKEgRDerABNZKGiy5LYxHU0g/Dr7WI11Igf5PAADiNebOM8XOs:KZx5KLk+XKGdLuk1KgWNO
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3784-18-0x0000000074DE0000-0x0000000075391000-memory.dmp

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memory/3784-25-0x0000000074DE0000-0x0000000075391000-memory.dmp

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memory/3784-23-0x0000000074DE0000-0x0000000075391000-memory.dmp

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memory/3784-24-0x0000000001710000-0x0000000001720000-memory.dmp

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memory/3784-20-0x0000000074DE0000-0x0000000075391000-memory.dmp

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memory/3784-19-0x0000000001710000-0x0000000001720000-memory.dmp

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memory/4692-16-0x00000000005A0000-0x00000000005B0000-memory.dmp

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memory/4692-0-0x0000000074DE0000-0x0000000075391000-memory.dmp

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memory/4692-5-0x0000000074DE0000-0x0000000075391000-memory.dmp

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memory/4692-21-0x0000000074DE0000-0x0000000075391000-memory.dmp

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memory/4692-4-0x0000000074DE0000-0x0000000075391000-memory.dmp

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memory/4692-2-0x00000000005A0000-0x00000000005B0000-memory.dmp

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memory/4692-1-0x0000000074DE0000-0x0000000075391000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads