njrat | 1fa98e07edef331f77abcd331ebe00d4b45e50a027743a990b634be991fa8c7a

General

Target
SecuriteInfo.com.Script.SNH-gen.27752.2674.exe
Size 841KB
Sample250604-lsdafacl4w
SHA256 1fa98e07edef331f77abcd331ebe00d4b45e50a027743a990b634be991fa8c7a
MD5 b377e953cb655c1a33f555beb0c9cf89
SHA1 cb84077e3de0d88d0efc44df224e866f8c382fd8
SHA512 94c5213fb4a906f371d395f3fef399bdaf03b780cc3b47a88c4455ea4ecbf9ab8c573f74036171ebc4989074f7bc8f0f95355ff87282e702cdf0b86e35598e26
SSDEEP 12288:84lsXvtCcmVVXzzn4PJAahPl/QEdIMiVbHydEIJnJWUgaJ7s7q9MmCS:84lavt0LkLL9IMixoEgeals7q9MmCS
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

njrat dengbengboum defense_evasion discovery persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

dengbengboum

C2

89.156.24.108:1738

Mutex

2df8aa737da989b11c40fab081247708

Attributes

reg_key
2df8aa737da989b11c40fab081247708
splitter
|'|'|

Signatures

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

Downloads MZ/PE file 1 IoCs

flow	pid	Process
23	720	SecuriteInfo.com.Script.SNH-gen.27752.2674.exe

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
1052	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-1-5-21-1153236273-2212388449-1493869963-1000\Control Panel\International\Geo\Nation	Svchost.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\2df8aa737da989b11c40fab081247708.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\2df8aa737da989b11c40fab081247708.exe	server.exe

Executes dropped EXE 3 IoCs

pid	Process
4752	Svchost.exe
2260	server.exe
4312	server.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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\2df8aa737da989b11c40fab081247708 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1153236273-2212388449-1493869963-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\2df8aa737da989b11c40fab081247708 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
22	raw.githubusercontent.com
23	raw.githubusercontent.com

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

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SecuriteInfo.com.Script.SNH-gen.27752.2674.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe

Suspicious use of AdjustPrivilegeToken 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 720 wrote to memory of 4752	720	SecuriteInfo.com.Script.SNH-gen.27752.2674.exe	94
PID 720 wrote to memory of 4752	720	SecuriteInfo.com.Script.SNH-gen.27752.2674.exe	94
PID 720 wrote to memory of 4752	720	SecuriteInfo.com.Script.SNH-gen.27752.2674.exe	94
PID 4752 wrote to memory of 2260	4752	Svchost.exe	97
PID 4752 wrote to memory of 2260	4752	Svchost.exe	97
PID 4752 wrote to memory of 2260	4752	Svchost.exe	97
PID 2260 wrote to memory of 1052	2260	server.exe	98
PID 2260 wrote to memory of 1052	2260	server.exe	98
PID 2260 wrote to memory of 1052	2260	server.exe	98
PID 5572 wrote to memory of 4312	5572	cmd.exe	102
PID 5572 wrote to memory of 4312	5572	cmd.exe	102
PID 5572 wrote to memory of 4312	5572	cmd.exe	102

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Script.SNH-gen.27752.2674.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Script.SNH-gen.27752.2674.exe"
1⤵
- Downloads MZ/PE file
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:720
- C:\Users\Admin\AppData\Local\Temp\Svchost.exe
  C:\Users\Admin\AppData\Local\Temp\Svchost.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4752
- - C:\Users\Admin\AppData\Local\Temp\server.exe
    "C:\Users\Admin\AppData\Local\Temp\server.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2260
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      Event Triggered Execution: Netsh Helper DLL
      System Location Discovery: System Language Discovery
      PID:1052

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\server.exe" ..
1⤵
- Suspicious use of WriteProcessMemory
PID:5572
- C:\Users\Admin\AppData\Local\Temp\server.exe
  C:\Users\Admin\AppData\Local\Temp\server.exe ..
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4312

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

Svchost.exe

Path C:\Users\Admin\AppData\Local\Temp\Svchost.exe
Size 23KB
SHA256 3f80635264950e46b965426c9741a1eaf02169c0b93236fcea4f426caf8b29d6
MD5 915c9c0811afe2125aac5d2c70306576
SHA1 b76b641c77baa0a2d583f51b236843e10a355cfd
SHA512 171c69a37364761a6a7a8b5a37fe690135523c5e8bb0b9a6a2d0c3f89ed03370956bfba53f2bedbcbfb3d09d89d3bf3477692f6413b5c0edda71c51d2473b567
SSDEEP 384:Pc6ze6e1PAhJVzC3tC1im/BsTx46PgZ0rap9HBmRvR6JZlbw8hqIusZzZnv:te9EJLN/yRpcnuA
MD5 SHA1 SHA512 SSDEEP

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memory/2260-33-0x0000000075590000-0x0000000075B41000-memory.dmp

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memory/2260-32-0x0000000075590000-0x0000000075B41000-memory.dmp

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memory/2260-34-0x0000000075590000-0x0000000075B41000-memory.dmp

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memory/2260-37-0x0000000075590000-0x0000000075B41000-memory.dmp

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memory/4752-20-0x0000000075592000-0x0000000075593000-memory.dmp

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memory/4752-21-0x0000000075590000-0x0000000075B41000-memory.dmp

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memory/4752-31-0x0000000075590000-0x0000000075B41000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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