3c036130c15ecb287d4d0f5b4901605889a6c65740862b749170aaaa20c7737b

General

Target

c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe
Size

32KB
MD5

c0df720a1222fc23c8b8eba6b54223a3
SHA1

530df7d127ba31749e619c37682162e14f41c30b
SHA256

3c036130c15ecb287d4d0f5b4901605889a6c65740862b749170aaaa20c7737b
SHA512

ca1706a2831bbd76f1bae2e6273173b7d60866f5ca847a8d3b256f3f5f233c44a4022d45b9496244c7f8e14fbaa1df6a9e7c6a3bc6ee291d9e35507edbaa630e
SSDEEP

768:00kFroaPaxa7NGKXxKt0K6jSkhCFHVb9/rs1IVM:dKkpxAIKXxKt0hof/rrV

Score

10^/10

discovery evasion execution upx

Malware Config

Signatures

Disables service(s) 3 TTPs
evasion execution

Windows Service
T1543.003

Service Stop
T1489

Service Execution
T1569.002
Stops running service(s) 4 TTPs
evasion execution

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Service Execution
T1569.002

Deletes itself 1 IoCs

pid	Process
4456	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
4456	rundll32.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3352-0-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral2/memory/3352-13-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Drops file in System32 directory 11 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\yuksuser.dll	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\yuksuser.dll	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\ksuser.dll	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\msimg32.dll	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\msimg32.dll	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\sysapp29.dll	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\yumidimap.dll	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\midimap.dll	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\yumsimg32.dll	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe

Launches sc.exe 2 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
3556	sc.exe
3936	sc.exe

System Location Discovery: System Language Discovery 1 TTPs 6 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	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3352	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe
3352	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe
3352	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe
3352	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe
3352	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe
3352	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3352	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3352 wrote to memory of 1680	3352	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe	84
PID 3352 wrote to memory of 1680	3352	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe	84
PID 3352 wrote to memory of 1680	3352	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe	84
PID 3352 wrote to memory of 3556	3352	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe	85
PID 3352 wrote to memory of 3556	3352	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe	85
PID 3352 wrote to memory of 3556	3352	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe	85
PID 3352 wrote to memory of 3936	3352	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe	86
PID 3352 wrote to memory of 3936	3352	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe	86
PID 3352 wrote to memory of 3936	3352	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe	86
PID 3352 wrote to memory of 4456	3352	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe	90
PID 3352 wrote to memory of 4456	3352	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe	90
PID 3352 wrote to memory of 4456	3352	c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe	90
PID 1680 wrote to memory of 2780	1680	net.exe	91
PID 1680 wrote to memory of 2780	1680	net.exe	91
PID 1680 wrote to memory of 2780	1680	net.exe	91

C:\Users\Admin\AppData\Local\Temp\c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c0df720a1222fc23c8b8eba6b54223a3_JaffaCakes118.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3352
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1680
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2780
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3556
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3936
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1724593569.dat, ServerMain c:\users\admin\appdata\local\temp\c0df720a1222fc23c8b8eba6b54223a3_jaffacakes118.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:4456

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

2

T1569

Service Execution

2

T1569.002

Persistence

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Privilege Escalation

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

2

T1489

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\1724593569.dat

Filesize
32KB

MD5
840a2567c3395603dbb4f7996b0de56c

SHA1
1cfb1ad1fb56ae02df8938df8ab0ff9e513ccab8

SHA256
3706773ae6d00af1d2a410def8566e6dd5db5b8d870c1dd89d72c93da22a9e60

SHA512
97e252486b64649f57b9651c8adfe240504eed2b1b2813144fc517bf5022634b2015975be50eb2fe38a431111a2d94ee6905a58c99abba002c359605e0ebdc47

Download Submit
memory/3352-0-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3352-13-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

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