c3e1c1f1d8bfeebb2aa7b97f8ba61d8a9c41e54a73f223141332d080aaa95de3

General

Target

bb3489733dd75ee9c4d66b11ee74d447_JaffaCakes118.exe
Size

348KB
MD5

bb3489733dd75ee9c4d66b11ee74d447
SHA1

261ff8a92b8d7aadb557961e20cf9c13277deb6f
SHA256

c3e1c1f1d8bfeebb2aa7b97f8ba61d8a9c41e54a73f223141332d080aaa95de3
SHA512

93248841168115fec74eb587e26541e376890d492f7a5fca04456f5899ae828b8314243654214325e89b4b321a4a560f43bcbba674b653e0ffdd3e9ed0057f0b
SSDEEP

3072:JpIGmvln+RX0GWDocLiAqq02JtXcuVchWdsItjIj3XOXjC+/c:QGmvlYD0o+cuWUNtYOtc

Score

10^/10

discovery evasion persistence privilege_escalation upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Users\\Admin\\AppData\\Roaming\\csrss.exe\""	bb3489733dd75ee9c4d66b11ee74d447_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Users\\Admin\\AppData\\Roaming\\csrss.exe\""	csrss.exe

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2804	netsh.exe

Deletes itself 1 IoCs

pid	Process
2824	csrss.exe

Executes dropped EXE 1 IoCs

pid	Process
2824	csrss.exe

Loads dropped DLL 2 IoCs

pid	Process
1712	bb3489733dd75ee9c4d66b11ee74d447_JaffaCakes118.exe
1712	bb3489733dd75ee9c4d66b11ee74d447_JaffaCakes118.exe

UPX packed file 14 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1712-5-0x0000000000400000-0x0000000000459000-memory.dmp	upx
behavioral1/memory/1712-34-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral1/memory/1712-33-0x0000000000400000-0x0000000000459000-memory.dmp	upx
behavioral1/memory/2824-39-0x0000000000400000-0x0000000000459000-memory.dmp	upx
behavioral1/memory/2824-40-0x0000000000400000-0x0000000000459000-memory.dmp	upx
behavioral1/memory/2824-41-0x0000000000400000-0x0000000000459000-memory.dmp	upx
behavioral1/memory/2824-42-0x0000000000400000-0x0000000000459000-memory.dmp	upx
behavioral1/memory/2824-43-0x0000000000400000-0x0000000000459000-memory.dmp	upx
behavioral1/memory/2824-44-0x0000000000400000-0x0000000000459000-memory.dmp	upx
behavioral1/memory/2824-45-0x0000000000400000-0x0000000000459000-memory.dmp	upx
behavioral1/memory/2824-46-0x0000000000400000-0x0000000000459000-memory.dmp	upx
behavioral1/memory/2824-47-0x0000000000400000-0x0000000000459000-memory.dmp	upx
behavioral1/memory/2824-48-0x0000000000400000-0x0000000000459000-memory.dmp	upx
behavioral1/memory/2824-49-0x0000000000400000-0x0000000000459000-memory.dmp	upx

Adds Run key to start application 2 TTPs 4 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\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\csrss.exe\""	bb3489733dd75ee9c4d66b11ee74d447_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\csrss.exe\""	csrss.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\csrss.exe\""	csrss.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\csrss.exe\""	bb3489733dd75ee9c4d66b11ee74d447_JaffaCakes118.exe

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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	bb3489733dd75ee9c4d66b11ee74d447_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrss.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1712	bb3489733dd75ee9c4d66b11ee74d447_JaffaCakes118.exe
2824	csrss.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1712 wrote to memory of 2804	1712	bb3489733dd75ee9c4d66b11ee74d447_JaffaCakes118.exe	32
PID 1712 wrote to memory of 2804	1712	bb3489733dd75ee9c4d66b11ee74d447_JaffaCakes118.exe	32
PID 1712 wrote to memory of 2804	1712	bb3489733dd75ee9c4d66b11ee74d447_JaffaCakes118.exe	32
PID 1712 wrote to memory of 2804	1712	bb3489733dd75ee9c4d66b11ee74d447_JaffaCakes118.exe	32
PID 1712 wrote to memory of 2824	1712	bb3489733dd75ee9c4d66b11ee74d447_JaffaCakes118.exe	34
PID 1712 wrote to memory of 2824	1712	bb3489733dd75ee9c4d66b11ee74d447_JaffaCakes118.exe	34
PID 1712 wrote to memory of 2824	1712	bb3489733dd75ee9c4d66b11ee74d447_JaffaCakes118.exe	34
PID 1712 wrote to memory of 2824	1712	bb3489733dd75ee9c4d66b11ee74d447_JaffaCakes118.exe	34

C:\Users\Admin\AppData\Local\Temp\bb3489733dd75ee9c4d66b11ee74d447_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\bb3489733dd75ee9c4d66b11ee74d447_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1712
- C:\Windows\SysWOW64\netsh.exe
  netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\csrss.exe" CityScape Enable
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:2804
- C:\Users\Admin\AppData\Roaming\csrss.exe
  /d C:\Users\Admin\AppData\Local\Temp\bb3489733dd75ee9c4d66b11ee74d447_JaffaCakes118.exe
  2⤵
  - Modifies WinLogon for persistence
  - Deletes itself
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2824

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

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

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

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 Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\csrss.exe

Filesize
348KB

MD5
15dcaef0389ab787ce9910730b9c851e

SHA1
7387214e38184f1a6a92e0b63378ae027e1d0508

SHA256
07bc5d3190a22052acc2374723b3fd9bb672322d78db6d9b52075d746c4dacf1

SHA512
ccb58c17aca09b94398a3600e6b654db8b66c3796c5bb62c5c4c00c19e43563fc59b7db43508433d5fb1a42f79b3fc2b6817355963a7a207e059c5f80cf73d35

Download Submit
memory/1712-0-0x00000000006E0000-0x0000000000739000-memory.dmp

Filesize
356KB

Download
memory/1712-1-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1712-5-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/1712-34-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1712-33-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2824-40-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2824-39-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2824-36-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2824-41-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2824-42-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2824-43-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2824-44-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2824-45-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2824-46-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2824-47-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2824-48-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2824-49-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads