2ef8ba758d2231ed3dbae90b1251c0bb01683763f55923d6964cb7736b4be689

General

Target

a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe
Size

32KB
MD5

a7ea25ed62232ca7bc27dd89c17601f6
SHA1

e8662b986418b4f046a319f0958fc6ccbc3ab744
SHA256

2ef8ba758d2231ed3dbae90b1251c0bb01683763f55923d6964cb7736b4be689
SHA512

21f4c5286db954d085dbd5b2e8a07434203a40d81bef543d81ec160794902a662447a9f705e86e1778d6f985f2f2ad8c14d6f3129d164ae65cd563f2a184c14a
SSDEEP

768:NEl6Ovnxd1HN1SZnpDoR89WIB825ykUPLfUMXW1F5X2WB:NEkWB1SZ6RcB82chPAX1Gk

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
1988	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1988	rundll32.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1384-0-0x0000000000400000-0x0000000000415000-memory.dmp	upx
behavioral1/memory/1384-10-0x0000000000400000-0x0000000000415000-memory.dmp	upx

Drops file in System32 directory 8 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\midimap.dll	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\sysapp17.dll	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\YUksuser.dll	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\YUksuser.dll	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\ksuser.dll	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\YUmidimap.dll	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe

Launches sc.exe 2 IoCs

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

pid	Process
1960	sc.exe
1516	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	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.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	net.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe
1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe
1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1384 wrote to memory of 2060	1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe	31
PID 1384 wrote to memory of 2060	1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe	31
PID 1384 wrote to memory of 2060	1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe	31
PID 1384 wrote to memory of 2060	1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe	31
PID 1384 wrote to memory of 1960	1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe	32
PID 1384 wrote to memory of 1960	1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe	32
PID 1384 wrote to memory of 1960	1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe	32
PID 1384 wrote to memory of 1960	1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe	32
PID 1384 wrote to memory of 1516	1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe	33
PID 1384 wrote to memory of 1516	1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe	33
PID 1384 wrote to memory of 1516	1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe	33
PID 1384 wrote to memory of 1516	1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe	33
PID 1384 wrote to memory of 1988	1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe	34
PID 1384 wrote to memory of 1988	1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe	34
PID 1384 wrote to memory of 1988	1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe	34
PID 1384 wrote to memory of 1988	1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe	34
PID 1384 wrote to memory of 1988	1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe	34
PID 1384 wrote to memory of 1988	1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe	34
PID 1384 wrote to memory of 1988	1384	a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe	34
PID 2060 wrote to memory of 2804	2060	net.exe	38
PID 2060 wrote to memory of 2804	2060	net.exe	38
PID 2060 wrote to memory of 2804	2060	net.exe	38
PID 2060 wrote to memory of 2804	2060	net.exe	38

C:\Users\Admin\AppData\Local\Temp\a7ea25ed62232ca7bc27dd89c17601f6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a7ea25ed62232ca7bc27dd89c17601f6_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:1384
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2060
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2804
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1960
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1516
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1724009177.dat, ServerMain c:\users\admin\appdata\local\temp\a7ea25ed62232ca7bc27dd89c17601f6_jaffacakes118.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:1988

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\1724009177.dat

Filesize
31KB

MD5
cc9ca7834be1757d4cc6d3d02328a43b

SHA1
cd37dd5e0528865dc01ff1d54989612ec32f354d

SHA256
dafa29bc9f4b472d8c5866c1ca0b2d9e934a7d236177706ed81157e73f408e05

SHA512
eaed02d2ded4eede1503f6120899335cba4506d1d42f9832b2003294c9996c74e0e9b40e5d92c325b17b83b31369add1474d119201b7da7edbfa6cf1a321ccaa

Download Submit
memory/1384-0-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1384-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download

Analysis

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