njrat | 868445ea9b47fac6a13bef896bc29ebd2818b4db5d7f039f5642f605cfaf1ad2

General

Target

e31b56ca4bf0ba57e5bf00b5e508d66b_JaffaCakes118.exe
Size

55KB
MD5

e31b56ca4bf0ba57e5bf00b5e508d66b
SHA1

3b4f7390aa6fc57d93e84ae5a8efd9ce8ad39bd1
SHA256

868445ea9b47fac6a13bef896bc29ebd2818b4db5d7f039f5642f605cfaf1ad2
SHA512

7524a38b317657a694f36eac688a20ff8836ed136a81607eed546d8c2374c4fe92fff3550c1285cb655f6988fb20580c2b2c010770b4df35b97b9bc97828ee64
SSDEEP

1536:5QbBT6oIhZqvGE1S8AF7vvi7l+hGu+qgGNRcQ:agCHAF7vvi7l+Gu+qgGNeQ

Score

10^/10

njrat beer evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

Beer

C2

beercontest.servebeer.com:5552

Mutex

d683b158d2719a9a4dc585645b8e3565

Attributes

reg_key
d683b158d2719a9a4dc585645b8e3565
splitter
|'|'|

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
3152	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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	e31b56ca4bf0ba57e5bf00b5e508d66b_JaffaCakes118.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d683b158d2719a9a4dc585645b8e3565.exe	MSUPDATE.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d683b158d2719a9a4dc585645b8e3565.exe	MSUPDATE.exe

Executes dropped EXE 1 IoCs

pid	Process
3992	MSUPDATE.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-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\d683b158d2719a9a4dc585645b8e3565 = "\"C:\\Windows\\MSUPDATE.exe\" .."	MSUPDATE.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\d683b158d2719a9a4dc585645b8e3565 = "\"C:\\Windows\\MSUPDATE.exe\" .."	MSUPDATE.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\MSUPDATE.exe	e31b56ca4bf0ba57e5bf00b5e508d66b_JaffaCakes118.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\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	3992	MSUPDATE.exe
Token: 33	3992	MSUPDATE.exe
Token: SeIncBasePriorityPrivilege	3992	MSUPDATE.exe
Token: 33	3992	MSUPDATE.exe
Token: SeIncBasePriorityPrivilege	3992	MSUPDATE.exe
Token: 33	3992	MSUPDATE.exe
Token: SeIncBasePriorityPrivilege	3992	MSUPDATE.exe
Token: 33	3992	MSUPDATE.exe
Token: SeIncBasePriorityPrivilege	3992	MSUPDATE.exe
Token: 33	3992	MSUPDATE.exe
Token: SeIncBasePriorityPrivilege	3992	MSUPDATE.exe
Token: 33	3992	MSUPDATE.exe
Token: SeIncBasePriorityPrivilege	3992	MSUPDATE.exe
Token: 33	3992	MSUPDATE.exe
Token: SeIncBasePriorityPrivilege	3992	MSUPDATE.exe
Token: 33	3992	MSUPDATE.exe
Token: SeIncBasePriorityPrivilege	3992	MSUPDATE.exe
Token: 33	3992	MSUPDATE.exe
Token: SeIncBasePriorityPrivilege	3992	MSUPDATE.exe
Token: 33	3992	MSUPDATE.exe
Token: SeIncBasePriorityPrivilege	3992	MSUPDATE.exe
Token: 33	3992	MSUPDATE.exe
Token: SeIncBasePriorityPrivilege	3992	MSUPDATE.exe
Token: 33	3992	MSUPDATE.exe
Token: SeIncBasePriorityPrivilege	3992	MSUPDATE.exe
Token: 33	3992	MSUPDATE.exe
Token: SeIncBasePriorityPrivilege	3992	MSUPDATE.exe
Token: 33	3992	MSUPDATE.exe
Token: SeIncBasePriorityPrivilege	3992	MSUPDATE.exe
Token: 33	3992	MSUPDATE.exe
Token: SeIncBasePriorityPrivilege	3992	MSUPDATE.exe
Token: 33	3992	MSUPDATE.exe
Token: SeIncBasePriorityPrivilege	3992	MSUPDATE.exe
Token: 33	3992	MSUPDATE.exe
Token: SeIncBasePriorityPrivilege	3992	MSUPDATE.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4704 wrote to memory of 3992	4704	e31b56ca4bf0ba57e5bf00b5e508d66b_JaffaCakes118.exe	86
PID 4704 wrote to memory of 3992	4704	e31b56ca4bf0ba57e5bf00b5e508d66b_JaffaCakes118.exe	86
PID 3992 wrote to memory of 3152	3992	MSUPDATE.exe	90
PID 3992 wrote to memory of 3152	3992	MSUPDATE.exe	90

C:\Users\Admin\AppData\Local\Temp\e31b56ca4bf0ba57e5bf00b5e508d66b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e31b56ca4bf0ba57e5bf00b5e508d66b_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4704
- C:\Windows\MSUPDATE.exe
  "C:\Windows\MSUPDATE.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3992
- - C:\Windows\SYSTEM32\netsh.exe
    netsh firewall add allowedprogram "C:\Windows\MSUPDATE.exe" "MSUPDATE.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    PID:3152

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\MSUPDATE.exe

Filesize
55KB

MD5
e31b56ca4bf0ba57e5bf00b5e508d66b

SHA1
3b4f7390aa6fc57d93e84ae5a8efd9ce8ad39bd1

SHA256
868445ea9b47fac6a13bef896bc29ebd2818b4db5d7f039f5642f605cfaf1ad2

SHA512
7524a38b317657a694f36eac688a20ff8836ed136a81607eed546d8c2374c4fe92fff3550c1285cb655f6988fb20580c2b2c010770b4df35b97b9bc97828ee64

Download Submit
memory/3992-20-0x00007FFCD1AA0000-0x00007FFCD2441000-memory.dmp

Filesize
9.6MB

Download
memory/3992-26-0x00007FFCD1AA0000-0x00007FFCD2441000-memory.dmp

Filesize
9.6MB

Download
memory/3992-25-0x00007FFCD1AA0000-0x00007FFCD2441000-memory.dmp

Filesize
9.6MB

Download
memory/3992-24-0x00000000019C0000-0x00000000019C8000-memory.dmp

Filesize
32KB

Download
memory/3992-23-0x000000001CE20000-0x000000001CEBC000-memory.dmp

Filesize
624KB

Download
memory/3992-21-0x00007FFCD1AA0000-0x00007FFCD2441000-memory.dmp

Filesize
9.6MB

Download
memory/3992-19-0x00007FFCD1AA0000-0x00007FFCD2441000-memory.dmp

Filesize
9.6MB

Download
memory/4704-3-0x00007FFCD1AA0000-0x00007FFCD2441000-memory.dmp

Filesize
9.6MB

Download
memory/4704-18-0x00007FFCD1AA0000-0x00007FFCD2441000-memory.dmp

Filesize
9.6MB

Download
memory/4704-5-0x000000001BCB0000-0x000000001C17E000-memory.dmp

Filesize
4.8MB

Download
memory/4704-4-0x0000000000B40000-0x0000000000B4C000-memory.dmp

Filesize
48KB

Download
memory/4704-0-0x00007FFCD1D55000-0x00007FFCD1D56000-memory.dmp

Filesize
4KB

Download
memory/4704-2-0x00007FFCD1AA0000-0x00007FFCD2441000-memory.dmp

Filesize
9.6MB

Download
memory/4704-1-0x000000001B110000-0x000000001B1B6000-memory.dmp

Filesize
664KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads