958aefeb11c3c540a20f840031b201a2c66e524bb4a4ed8d9f4f17d76d6a4a85

General

Target

ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
Size

12KB
MD5

ef1e383f9e6bbd9468f73acfbd60d03f
SHA1

1616e1e046666d283259d41882aa2d5f602be4ec
SHA256

958aefeb11c3c540a20f840031b201a2c66e524bb4a4ed8d9f4f17d76d6a4a85
SHA512

99b46e64287b2ec036f6a12d2ce8d20160eafb0d4512ca5d976c7676234bf0a912f55ebf1fa0c2f75fd97ab77f2ec65b9f97ed0865aea88e2d21e44ef605b43c
SSDEEP

192:7WsnGNS9NYmsRWecp1xmQEaez0jYN2HmSmQcR+hbBHA6hnTWL82xW7:BGs7GWecpvmQlaZEPXg6hnTWL82xW7

Score

10^/10

discovery persistence 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:\\Windows\\system32\\rundll16.exe C:\\Windows\\system32\\c_10083.nls"	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
2824	npkpdb.dll

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3476-0-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral2/files/0x00070000000235f0-15.dat	upx
behavioral2/memory/3476-31-0x0000000000400000-0x0000000000416000-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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\System = "C:\\Windows\\system32\\rundll.exe"	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Run a DLL as an App = "C:\\Windows\\system32\\rundll16.exe"	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe

Drops autorun.inf file 1 TTPs 24 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

description	ioc	Process
File opened for modification	\??\H:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	\??\J:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	\??\K:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	\??\R:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	\??\E:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	F:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	\??\G:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	\??\I:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	\??\N:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	C:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	\??\L:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	\??\M:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	\??\O:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	\??\U:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	\??\V:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	\??\X:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	D:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	\??\Q:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	\??\S:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	\??\T:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	\??\W:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	\??\Y:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	\??\Z:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	\??\P:\Autorun.inf	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe

Drops file in System32 directory 10 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll86.exe	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\rundll32.exe	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\npkpdb.dll	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\rundll.exe	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\rundll.exe	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\UTF-8.nls	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\rundll86.exe	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\c_10083.nls	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\c_10083.nls	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\UTF-8.nls	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.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	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	npkpdb.dll
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Modifies Internet Explorer settings 1 TTPs 4 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\Locked = "1"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Internet Explorer\Toolbar	explorer.exe

Modifies registry class 20 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic"	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 19002f433a5c000000000000000000000000000000000000000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f50e04fd020ea3a6910a2d808002b30309d0000	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\NodeSlot = "1"	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	explorer.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4284	explorer.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3476	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
2824	npkpdb.dll
4284	explorer.exe
4284	explorer.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3476 wrote to memory of 2824	3476	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe	89
PID 3476 wrote to memory of 2824	3476	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe	89
PID 3476 wrote to memory of 2824	3476	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe	89
PID 3476 wrote to memory of 3732	3476	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe	90
PID 3476 wrote to memory of 3732	3476	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe	90
PID 3476 wrote to memory of 3732	3476	ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe	90

C:\Users\Admin\AppData\Local\Temp\ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ef1e383f9e6bbd9468f73acfbd60d03f_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Drops autorun.inf file
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3476
- C:\Windows\SysWOW64\npkpdb.dll
  C:\Windows\system32\npkpdb.dll
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2824
- C:\Windows\SysWOW64\explorer.exe
  explorer.exe C:\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3732

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:4284

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 --field-trial-handle=4020,i,9445584274764997943,12714240264001792460,262144 --variations-seed-version --mojo-platform-channel-handle=4108 /prefetch:8
1⤵
PID:4272

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

1

T1091

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

3

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Replication Through Removable Media

1

T1091

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\c_10083.nls

Filesize
12KB

MD5
ef1e383f9e6bbd9468f73acfbd60d03f

SHA1
1616e1e046666d283259d41882aa2d5f602be4ec

SHA256
958aefeb11c3c540a20f840031b201a2c66e524bb4a4ed8d9f4f17d76d6a4a85

SHA512
99b46e64287b2ec036f6a12d2ce8d20160eafb0d4512ca5d976c7676234bf0a912f55ebf1fa0c2f75fd97ab77f2ec65b9f97ed0865aea88e2d21e44ef605b43c

Download Submit
C:\Windows\SysWOW64\npkpdb.dll

Filesize
20KB

MD5
e53c109deddc2d3f3ec7953738a03c38

SHA1
89d0f68bfae88a2d7f1e9aadd1d629a40f4477f3

SHA256
692efe76420bb927712bd35a472614f9d12550c512090b7a55c2171d2e28ea8f

SHA512
d0a12d3b55763fc061ff5a7649f23e632ae8ea0d320f30c9c9ef3c11921b4e0366508d9c18df073c51e0222e44f1ffea902d59ee6424e53c07d935db7ece5bf4

Download Submit
memory/3476-0-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3476-31-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads