njrat | f3ebcd2aa038209719e43f3f552ff0d78ada9b871b338d89f9b9a4b7aa6a0fbb

General

Target
450f2817e2c5be69bc453be1f61671e4_JaffaCakes118.exe
Size 23KB
Sample240515-h24bfaee7x
SHA256 f3ebcd2aa038209719e43f3f552ff0d78ada9b871b338d89f9b9a4b7aa6a0fbb
MD5 450f2817e2c5be69bc453be1f61671e4
SHA1 61fd5148ec072bb3bc772424381ede3ff450d88f
SHA512 d6223495ee4998b5f75731934bc35a7dda53ab961426602225b079133bf7021a65b681052e70d990131f51d43f22a4f8937efd10db8d9321f4c69c8e27d00776
SSDEEP 384:jLMK6b2GZsx/Yr1+liORH1kcPFQ6Lg9gSOYRr9mRvR6JZlbw8hqIusZzZvE:jEb9glF51LRpcnuD
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
4948	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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	450f2817e2c5be69bc453be1f61671e4_JaffaCakes118.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1a99f094e2a8cb7e39e892e040e9c101.exe	winmgr.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1a99f094e2a8cb7e39e892e040e9c101.exe	winmgr.exe

Executes dropped EXE 1 IoCs

pid	Process
388	winmgr.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-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\1a99f094e2a8cb7e39e892e040e9c101 = "\"C:\\Users\\Admin\\AppData\\Roaming\\winmgr.exe\" .."	winmgr.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\1a99f094e2a8cb7e39e892e040e9c101 = "\"C:\\Users\\Admin\\AppData\\Roaming\\winmgr.exe\" .."	winmgr.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	388	winmgr.exe
Token: 33	388	winmgr.exe
Token: SeIncBasePriorityPrivilege	388	winmgr.exe
Token: 33	388	winmgr.exe
Token: SeIncBasePriorityPrivilege	388	winmgr.exe
Token: 33	388	winmgr.exe
Token: SeIncBasePriorityPrivilege	388	winmgr.exe
Token: 33	388	winmgr.exe
Token: SeIncBasePriorityPrivilege	388	winmgr.exe
Token: 33	388	winmgr.exe
Token: SeIncBasePriorityPrivilege	388	winmgr.exe
Token: 33	388	winmgr.exe
Token: SeIncBasePriorityPrivilege	388	winmgr.exe
Token: 33	388	winmgr.exe
Token: SeIncBasePriorityPrivilege	388	winmgr.exe
Token: 33	388	winmgr.exe
Token: SeIncBasePriorityPrivilege	388	winmgr.exe
Token: 33	388	winmgr.exe
Token: SeIncBasePriorityPrivilege	388	winmgr.exe
Token: 33	388	winmgr.exe
Token: SeIncBasePriorityPrivilege	388	winmgr.exe
Token: 33	388	winmgr.exe
Token: SeIncBasePriorityPrivilege	388	winmgr.exe
Token: 33	388	winmgr.exe
Token: SeIncBasePriorityPrivilege	388	winmgr.exe
Token: 33	388	winmgr.exe
Token: SeIncBasePriorityPrivilege	388	winmgr.exe
Token: 33	388	winmgr.exe
Token: SeIncBasePriorityPrivilege	388	winmgr.exe
Token: 33	388	winmgr.exe
Token: SeIncBasePriorityPrivilege	388	winmgr.exe
Token: 33	388	winmgr.exe
Token: SeIncBasePriorityPrivilege	388	winmgr.exe
Token: 33	388	winmgr.exe
Token: SeIncBasePriorityPrivilege	388	winmgr.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4472 wrote to memory of 388	4472	450f2817e2c5be69bc453be1f61671e4_JaffaCakes118.exe	81
PID 4472 wrote to memory of 388	4472	450f2817e2c5be69bc453be1f61671e4_JaffaCakes118.exe	81
PID 4472 wrote to memory of 388	4472	450f2817e2c5be69bc453be1f61671e4_JaffaCakes118.exe	81
PID 388 wrote to memory of 4948	388	winmgr.exe	82
PID 388 wrote to memory of 4948	388	winmgr.exe	82
PID 388 wrote to memory of 4948	388	winmgr.exe	82

C:\Users\Admin\AppData\Local\Temp\450f2817e2c5be69bc453be1f61671e4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\450f2817e2c5be69bc453be1f61671e4_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4472
- C:\Users\Admin\AppData\Roaming\winmgr.exe
  "C:\Users\Admin\AppData\Roaming\winmgr.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:388
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\winmgr.exe" "winmgr.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:4948

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

winmgr.exe

Path C:\Users\Admin\AppData\Roaming\winmgr.exe
Size 23KB
SHA256 f3ebcd2aa038209719e43f3f552ff0d78ada9b871b338d89f9b9a4b7aa6a0fbb
MD5 450f2817e2c5be69bc453be1f61671e4
SHA1 61fd5148ec072bb3bc772424381ede3ff450d88f
SHA512 d6223495ee4998b5f75731934bc35a7dda53ab961426602225b079133bf7021a65b681052e70d990131f51d43f22a4f8937efd10db8d9321f4c69c8e27d00776
SSDEEP 384:jLMK6b2GZsx/Yr1+liORH1kcPFQ6Lg9gSOYRr9mRvR6JZlbw8hqIusZzZvE:jEb9glF51LRpcnuD
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/388-13-0x0000000074B50000-0x0000000075101000-memory.dmp

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memory/388-15-0x0000000074B50000-0x0000000075101000-memory.dmp

Download

memory/4472-0-0x0000000074B52000-0x0000000074B53000-memory.dmp

Download

memory/4472-1-0x0000000074B50000-0x0000000075101000-memory.dmp

Download

memory/4472-2-0x0000000074B50000-0x0000000075101000-memory.dmp

Download

memory/4472-12-0x0000000074B50000-0x0000000075101000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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