7304580f4667c8beaa430ff265a32166c6451c94d51287949be37312cad1cfb6

General

Target

735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
Size

873KB
MD5

735ae0b3e03f102ac38f6e5dfb8188a7
SHA1

f7d1ac0ed7f9b2507e06f20589b746631b07adf0
SHA256

7304580f4667c8beaa430ff265a32166c6451c94d51287949be37312cad1cfb6
SHA512

47ef3a839c0f23c6bbea5266238e832b57cced7509f2750936dd1e252cf9acd2d0bee44fbbea7a70562b0af8a4b1669bdacf39c20f532c8968fd6d04c6d26693
SSDEEP

24576:KEtl9mRda1ISGB2uJ2s4otqFCJrW9FqvSbqsHasgXhFHDAGtlRXZ+CP63n0NuJvS:BEs1lY

Score

10^/10

persistence ransomware

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe HelpMe.exe"	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe

Renames multiple (93) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Drops startup file 2 IoCs

Processes:

735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe

description	ioc	process
File opened (read-only)	\??\L:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\M:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\O:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\Q:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\S:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\B:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\I:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\J:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\N:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\Y:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\Z:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\E:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\G:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\V:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\H:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\U:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\P:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\R:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\T:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\W:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\X:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\A:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened (read-only)	\??\K:	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe

Drops autorun.inf file 1 TTPs 2 IoCs

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

Replication Through Removable Media

T1091

Processes:

735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe

description	ioc	process
File opened for modification	F:\AUTORUN.INF	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened for modification	C:\AUTORUN.INF	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe

Drops file in System32 directory 3 IoCs

Processes:

735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe

description	ioc	process
File created	C:\Windows\SysWOW64\notepad.exe.exe	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\HelpMe.exe	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\HelpMe.exe	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe

Drops file in Program Files directory 1 IoCs

Processes:

735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe

description ioc process

File created C:\Program Files (x86)\Internet Explorer\iexplore.exe.exe 735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe

pid process

1248 735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe

description	ioc	process
File created	C:\Program Files (x86)\Internet Explorer\iexplore.exe.exe	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe

pid	process
1248	735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\735ae0b3e03f102ac38f6e5dfb8188a7_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Drops startup file
- Enumerates connected drives
- Drops autorun.inf file
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
PID:1248

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

1

T1091

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Replication Through Removable Media

1

T1091

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\$Recycle.Bin\S-1-5-21-2721934792-624042501-2768869379-1000\desktop.ini.exe

Filesize
873KB

MD5
f15205fc7e01291a383177c44623c903

SHA1
e23c6d6abddcad9a7c8a039ff504cf9c362c9278

SHA256
cfdaebaa10821301fb81f65c19e9e43f47b7e2bcf2931fb3877964d82273ba6f

SHA512
5476fe7987b91b13b94ef80a52d87678e02b06a84c0be4a2cd8740aaff55468f1f17de5cbfb01ae6f85591866d0afe5a5fe83b2717a7bfe269d54296e8694d3a

Download Submit
C:\Program Files (x86)\Internet Explorer\iexplore.exe.exe

Filesize
1.6MB

MD5
250b1243d7c60d79079a1598932fb6e7

SHA1
e6ccda63b0ad9721d51ac293297bde1ecedfe8db

SHA256
b3807f778aa1e37853b162704ff2ca3bd4a607c019afc11a975d45b997535853

SHA512
5e971cca5f697a6eac76af90ed20a1270f9a544b7aef3bb1c0437de67794669ec493bb8c03f9091ed13ec510a5848d142a264914153f15298c1fdaecce811bfe

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk

Filesize
1KB

MD5
6a2cfa345d8a9d048189358a99bf1fc6

SHA1
deeca308a7cd0f52e35a865a300136474983be21

SHA256
5358b473c48095aa8e2cf4bceaa497f34ff1eebae904dfc91ed186b2ddd52d03

SHA512
40860d2f67435fe7d30339ecb889bede891ea3944a030820748a6986947fbc6bbca84c0a8bc63337cef48bd5d6eaf6c31d9f9c22207741d82dab46b620931358

Download Submit
F:\AUTORUN.INF

Filesize
145B

MD5
ca13857b2fd3895a39f09d9dde3cca97

SHA1
8b78c5b2ec97c372ebdcef92d14b0998f8dd6dd0

SHA256
cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae

SHA512
55e5b5325968d1e5314527fb2d26012f5aae4a1c38e305417be273400cb1c6d0c22b85bddb501d7a5720a3f53bb5caf6ada8a7894232344c4f6c6ef85d226b47

Download Submit
memory/1248-1-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1248-0-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1248-230-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1248-231-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads