njrat | 01b836a07d7ca886f4124815d2e26a7c6e4b710e2e2297a43d30a61521b36cea

General

Target
80496ed45fd4d93eb47080a991bd5f7b_JaffaCakes118.exe
Size 23KB
Sample240529-llff8aac7v
SHA256 01b836a07d7ca886f4124815d2e26a7c6e4b710e2e2297a43d30a61521b36cea
MD5 80496ed45fd4d93eb47080a991bd5f7b
SHA1 aa599254505a2815f01bd1ef934798507d0360d6
SHA512 77ee2a39a2c0b6d46e0a2ac43319d45383ac2494a83a226f434425118bb76d6c3331606f5183ec6144d180914800131368f5b26783e3dbeaf3fa66ec2bf1427b
SSDEEP 384:m9LGxbWRa4Loa1MplQSmucW+EQ6Sg8KtTfyrqmRvR6JZlbw8hqIusZzZlrGz:3xbZailz7YRpcnusrG
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 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4532	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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	80496ed45fd4d93eb47080a991bd5f7b_JaffaCakes118.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dcb969badc3b461494cd40fa378bcfe5.exe	knsas.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dcb969badc3b461494cd40fa378bcfe5.exe	knsas.exe

Executes dropped EXE 1 IoCs

pid	Process
2016	knsas.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\dcb969badc3b461494cd40fa378bcfe5 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\knsas.exe\" .."	knsas.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dcb969badc3b461494cd40fa378bcfe5 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\knsas.exe\" .."	knsas.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	2016	knsas.exe
Token: 33	2016	knsas.exe
Token: SeIncBasePriorityPrivilege	2016	knsas.exe
Token: 33	2016	knsas.exe
Token: SeIncBasePriorityPrivilege	2016	knsas.exe
Token: 33	2016	knsas.exe
Token: SeIncBasePriorityPrivilege	2016	knsas.exe
Token: 33	2016	knsas.exe
Token: SeIncBasePriorityPrivilege	2016	knsas.exe
Token: 33	2016	knsas.exe
Token: SeIncBasePriorityPrivilege	2016	knsas.exe
Token: 33	2016	knsas.exe
Token: SeIncBasePriorityPrivilege	2016	knsas.exe
Token: 33	2016	knsas.exe
Token: SeIncBasePriorityPrivilege	2016	knsas.exe
Token: 33	2016	knsas.exe
Token: SeIncBasePriorityPrivilege	2016	knsas.exe
Token: 33	2016	knsas.exe
Token: SeIncBasePriorityPrivilege	2016	knsas.exe
Token: 33	2016	knsas.exe
Token: SeIncBasePriorityPrivilege	2016	knsas.exe
Token: 33	2016	knsas.exe
Token: SeIncBasePriorityPrivilege	2016	knsas.exe
Token: 33	2016	knsas.exe
Token: SeIncBasePriorityPrivilege	2016	knsas.exe
Token: 33	2016	knsas.exe
Token: SeIncBasePriorityPrivilege	2016	knsas.exe
Token: 33	2016	knsas.exe
Token: SeIncBasePriorityPrivilege	2016	knsas.exe
Token: 33	2016	knsas.exe
Token: SeIncBasePriorityPrivilege	2016	knsas.exe
Token: 33	2016	knsas.exe
Token: SeIncBasePriorityPrivilege	2016	knsas.exe
Token: 33	2016	knsas.exe
Token: SeIncBasePriorityPrivilege	2016	knsas.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 732 wrote to memory of 2016	732	80496ed45fd4d93eb47080a991bd5f7b_JaffaCakes118.exe	103
PID 732 wrote to memory of 2016	732	80496ed45fd4d93eb47080a991bd5f7b_JaffaCakes118.exe	103
PID 732 wrote to memory of 2016	732	80496ed45fd4d93eb47080a991bd5f7b_JaffaCakes118.exe	103
PID 2016 wrote to memory of 4532	2016	knsas.exe	107
PID 2016 wrote to memory of 4532	2016	knsas.exe	107
PID 2016 wrote to memory of 4532	2016	knsas.exe	107

C:\Users\Admin\AppData\Local\Temp\80496ed45fd4d93eb47080a991bd5f7b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\80496ed45fd4d93eb47080a991bd5f7b_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:732
- C:\Users\Admin\AppData\Local\Temp\knsas.exe
  "C:\Users\Admin\AppData\Local\Temp\knsas.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2016
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\knsas.exe" "knsas.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:4532

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=3756,i,13879737908471496610,15335851594401413307,262144 --variations-seed-version --mojo-platform-channel-handle=4296 /prefetch:8
1⤵
PID:4396

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

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

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

knsas.exe

Path C:\Users\Admin\AppData\Local\Temp\knsas.exe
Size 23KB
SHA256 01b836a07d7ca886f4124815d2e26a7c6e4b710e2e2297a43d30a61521b36cea
MD5 80496ed45fd4d93eb47080a991bd5f7b
SHA1 aa599254505a2815f01bd1ef934798507d0360d6
SHA512 77ee2a39a2c0b6d46e0a2ac43319d45383ac2494a83a226f434425118bb76d6c3331606f5183ec6144d180914800131368f5b26783e3dbeaf3fa66ec2bf1427b
SSDEEP 384:m9LGxbWRa4Loa1MplQSmucW+EQ6Sg8KtTfyrqmRvR6JZlbw8hqIusZzZlrGz:3xbZailz7YRpcnusrG
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/732-0-0x0000000075382000-0x0000000075383000-memory.dmp

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memory/732-1-0x0000000075380000-0x0000000075931000-memory.dmp

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memory/732-2-0x0000000075380000-0x0000000075931000-memory.dmp

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memory/732-13-0x0000000075380000-0x0000000075931000-memory.dmp

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memory/2016-12-0x0000000075380000-0x0000000075931000-memory.dmp

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memory/2016-14-0x0000000075380000-0x0000000075931000-memory.dmp

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memory/2016-16-0x0000000075380000-0x0000000075931000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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