njrat | bbc764a25d2b92abad1371d7cc71ea348c23a00d017f7c7c038be57d4dd9648d

General

Target
JaffaCakes118_690a5ade9db1e23376ea30583219ee30.exe
Size 24KB
Sample250103-ae58hs1mbx
SHA256 bbc764a25d2b92abad1371d7cc71ea348c23a00d017f7c7c038be57d4dd9648d
MD5 690a5ade9db1e23376ea30583219ee30
SHA1 81923b9fe5dbb40ca21d26150014a503ec94808e
SHA512 057eef840ce70601dd56e2b0ff21d4d2c3bd512c21df359921af96dab188e2b2f58eb8bebd282aeffbc05bc8aa295401d80bee336d6e3637e02be19f0b8ceb9a
SSDEEP 384:lz5K6qlNDbUYmD2St4hRc262QvnARgFxv1iNsf/EU/45Eucl2gZM/l9Dso4l4s:ZqaqSwm/1iNsf/z/C/IZGghX
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

njrat discovery evasion persistence privilege_escalation trojan

Malware Config

Signatures

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

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2872	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c28d6367775016368e14b15858d823cb.exe	chorme.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c28d6367775016368e14b15858d823cb.exe	chorme.exe

Executes dropped EXE 1 IoCs

pid	Process
2820	chorme.exe

Loads dropped DLL 1 IoCs

pid	Process
2272	JaffaCakes118_690a5ade9db1e23376ea30583219ee30.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\c28d6367775016368e14b15858d823cb = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\chorme.exe\" .."	chorme.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\c28d6367775016368e14b15858d823cb = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\chorme.exe\" .."	chorme.exe

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 3 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	JaffaCakes118_690a5ade9db1e23376ea30583219ee30.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chorme.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	2820	chorme.exe
Token: 33	2820	chorme.exe
Token: SeIncBasePriorityPrivilege	2820	chorme.exe
Token: 33	2820	chorme.exe
Token: SeIncBasePriorityPrivilege	2820	chorme.exe
Token: 33	2820	chorme.exe
Token: SeIncBasePriorityPrivilege	2820	chorme.exe
Token: 33	2820	chorme.exe
Token: SeIncBasePriorityPrivilege	2820	chorme.exe
Token: 33	2820	chorme.exe
Token: SeIncBasePriorityPrivilege	2820	chorme.exe
Token: 33	2820	chorme.exe
Token: SeIncBasePriorityPrivilege	2820	chorme.exe
Token: 33	2820	chorme.exe
Token: SeIncBasePriorityPrivilege	2820	chorme.exe
Token: 33	2820	chorme.exe
Token: SeIncBasePriorityPrivilege	2820	chorme.exe
Token: 33	2820	chorme.exe
Token: SeIncBasePriorityPrivilege	2820	chorme.exe
Token: 33	2820	chorme.exe
Token: SeIncBasePriorityPrivilege	2820	chorme.exe
Token: 33	2820	chorme.exe
Token: SeIncBasePriorityPrivilege	2820	chorme.exe
Token: 33	2820	chorme.exe
Token: SeIncBasePriorityPrivilege	2820	chorme.exe
Token: 33	2820	chorme.exe
Token: SeIncBasePriorityPrivilege	2820	chorme.exe
Token: 33	2820	chorme.exe
Token: SeIncBasePriorityPrivilege	2820	chorme.exe
Token: 33	2820	chorme.exe
Token: SeIncBasePriorityPrivilege	2820	chorme.exe
Token: 33	2820	chorme.exe
Token: SeIncBasePriorityPrivilege	2820	chorme.exe
Token: 33	2820	chorme.exe
Token: SeIncBasePriorityPrivilege	2820	chorme.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2272 wrote to memory of 2820	2272	JaffaCakes118_690a5ade9db1e23376ea30583219ee30.exe	31
PID 2272 wrote to memory of 2820	2272	JaffaCakes118_690a5ade9db1e23376ea30583219ee30.exe	31
PID 2272 wrote to memory of 2820	2272	JaffaCakes118_690a5ade9db1e23376ea30583219ee30.exe	31
PID 2272 wrote to memory of 2820	2272	JaffaCakes118_690a5ade9db1e23376ea30583219ee30.exe	31
PID 2820 wrote to memory of 2872	2820	chorme.exe	32
PID 2820 wrote to memory of 2872	2820	chorme.exe	32
PID 2820 wrote to memory of 2872	2820	chorme.exe	32
PID 2820 wrote to memory of 2872	2820	chorme.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_690a5ade9db1e23376ea30583219ee30.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_690a5ade9db1e23376ea30583219ee30.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2272
- C:\Users\Admin\AppData\Local\Temp\chorme.exe
  "C:\Users\Admin\AppData\Local\Temp\chorme.exe"
  2⤵
  - 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:2820
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\chorme.exe" "chorme.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2872

Network

MITRE ATT&CK Enterprise v15

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

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

chorme.exe

Path \Users\Admin\AppData\Local\Temp\chorme.exe
Size 24KB
SHA256 bbc764a25d2b92abad1371d7cc71ea348c23a00d017f7c7c038be57d4dd9648d
MD5 690a5ade9db1e23376ea30583219ee30
SHA1 81923b9fe5dbb40ca21d26150014a503ec94808e
SHA512 057eef840ce70601dd56e2b0ff21d4d2c3bd512c21df359921af96dab188e2b2f58eb8bebd282aeffbc05bc8aa295401d80bee336d6e3637e02be19f0b8ceb9a
SSDEEP 384:lz5K6qlNDbUYmD2St4hRc262QvnARgFxv1iNsf/EU/45Eucl2gZM/l9Dso4l4s:ZqaqSwm/1iNsf/z/C/IZGghX
MD5 SHA1 SHA512 SSDEEP

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memory/2272-0-0x0000000074321000-0x0000000074322000-memory.dmp

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memory/2272-1-0x0000000074320000-0x00000000748CB000-memory.dmp

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memory/2272-2-0x0000000074320000-0x00000000748CB000-memory.dmp

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memory/2272-10-0x0000000074320000-0x00000000748CB000-memory.dmp

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memory/2820-11-0x0000000074320000-0x00000000748CB000-memory.dmp

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memory/2820-12-0x0000000074320000-0x00000000748CB000-memory.dmp

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memory/2820-14-0x0000000074320000-0x00000000748CB000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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