93b235e2758bfca346084ab6b0e0586eee969aa2aa11a3f0df37747b459178b1

General

Target

1a7edaf57cf9b56dcf496ec6091b48c1_JaffaCakes118.exe
Size

135KB
MD5

1a7edaf57cf9b56dcf496ec6091b48c1
SHA1

1b617d24ebff5df5ee24b271b12b52a72831a925
SHA256

93b235e2758bfca346084ab6b0e0586eee969aa2aa11a3f0df37747b459178b1
SHA512

66220058f7adccaa14efa9b0aaac35e9a708039b5e180e40cbb035e29d245d8cee1ed2c614c78f9806c2d4356ffabe50b31d4942f55bd98ee5d4724c8ca63bb5
SSDEEP

1536:VXUq5TXHN9l0jZZ8zjQqBbI2SbyGTJnUpgGDBOfI2:VXx5TZ/bxGTJnUpgGFOfI2

Score

10^/10

evasion persistence privilege_escalation upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 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\Userinit = "C:\\Windows\\system32\\userinit.exe,C:\\Program Files\\smss.exe"	1a7edaf57cf9b56dcf496ec6091b48c1_JaffaCakes118.exe

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	1a7edaf57cf9b56dcf496ec6091b48c1_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\smss = "C:\\Program Files\\smss.exe"	1a7edaf57cf9b56dcf496ec6091b48c1_JaffaCakes118.exe
Key created	\REGISTRY\USER\S-1-5-21-4204450073-1267028356-951339405-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	1a7edaf57cf9b56dcf496ec6091b48c1_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4204450073-1267028356-951339405-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\smss = "C:\\Program Files\\smss.exe"	1a7edaf57cf9b56dcf496ec6091b48c1_JaffaCakes118.exe

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
3640	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
2868	smss.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5056-0-0x0000000000400000-0x0000000000424000-memory.dmp	upx
behavioral2/files/0x000800000002356b-6.dat	upx
behavioral2/memory/2868-23-0x0000000000400000-0x0000000000424000-memory.dmp	upx
behavioral2/memory/5056-24-0x0000000000400000-0x0000000000424000-memory.dmp	upx

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-1-5-21-4204450073-1267028356-951339405-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smss = "C:\\Program Files\\smss.exe"	1a7edaf57cf9b56dcf496ec6091b48c1_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smss = "C:\\Program Files\\smss.exe"	1a7edaf57cf9b56dcf496ec6091b48c1_JaffaCakes118.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\smss.exe	1a7edaf57cf9b56dcf496ec6091b48c1_JaffaCakes118.exe
File opened for modification	C:\Program Files\lHPEnPvtw.tmp	smss.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 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

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5056	1a7edaf57cf9b56dcf496ec6091b48c1_JaffaCakes118.exe
2868	smss.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5056 wrote to memory of 3640	5056	1a7edaf57cf9b56dcf496ec6091b48c1_JaffaCakes118.exe	82
PID 5056 wrote to memory of 3640	5056	1a7edaf57cf9b56dcf496ec6091b48c1_JaffaCakes118.exe	82
PID 5056 wrote to memory of 3640	5056	1a7edaf57cf9b56dcf496ec6091b48c1_JaffaCakes118.exe	82
PID 5056 wrote to memory of 2868	5056	1a7edaf57cf9b56dcf496ec6091b48c1_JaffaCakes118.exe	83
PID 5056 wrote to memory of 2868	5056	1a7edaf57cf9b56dcf496ec6091b48c1_JaffaCakes118.exe	83
PID 5056 wrote to memory of 2868	5056	1a7edaf57cf9b56dcf496ec6091b48c1_JaffaCakes118.exe	83

C:\Users\Admin\AppData\Local\Temp\1a7edaf57cf9b56dcf496ec6091b48c1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1a7edaf57cf9b56dcf496ec6091b48c1_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Adds policy Run key to start application
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5056
- C:\Windows\SysWOW64\netsh.exe
  netsh firewall add allowedprogram "C:\Program Files\smss.exe" CityScape Enable
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  PID:3640
- C:\Program Files\smss.exe
  C:\Users\Admin\AppData\Local\Temp\1a7edaf57cf9b56dcf496ec6091b48c1_JaffaCakes118.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of SetWindowsHookEx
  PID:2868

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

3

T1547

Registry Run Keys / Startup Folder

2

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

3

T1547

Registry Run Keys / Startup Folder

2

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files\smss.exe

Filesize
135KB

MD5
1d54ae1025cb300141313bb266902839

SHA1
f73146009c03962b270ed455d8e20be31202f69c

SHA256
13d8d238f07f21fc2ac1edab35deb4cb32d69588f7d285c1a0f4a3c967c62cf4

SHA512
ad7700e98bc8da0c3b0cf672da3ca1905235134327109ef33b01573796797021f76b7989b8fe63211ad92306da13f40dbf539f538716a1f0a330e11ad9e1f203

Download Submit
memory/2868-23-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/5056-0-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/5056-24-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads