f64a787928c9a1bb3523cdcf2f144137d133d02d2c748c013e49cc1875fed5c3

General

Target
943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe
Size 33KB
Sample240813-w5he2athrr
SHA256 f64a787928c9a1bb3523cdcf2f144137d133d02d2c748c013e49cc1875fed5c3
MD5 943f44f05dbafa74f0fdac335aa051ae
SHA1 4bfc2c356465fc6dae8fe21748c7ce8fd8e59f58
SHA512 bd477abe8bb92edab845a9b76d6601ddfa24d469c4bfb90af7d1009e35cde38514bdc06ebc61c652f8fd2ca9e48b5a7e580b5071e870f11570c039c91e062cee
SSDEEP 768:q+b6GCOvFgxj2pQs97O0sEA+JGY65eoGP+iDh0MWLSn:qdGCwAj2yWO0G7heoGP+Evn
MD5 SHA1 SHA512 SSDEEP

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
680	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
680	rundll32.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5088-0-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral2/memory/5088-13-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Drops file in System32 directory 11 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ksuser.dll	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\msimg32.dll	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\sysapp18.dll	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\yuksuser.dll	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\yuksuser.dll	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\yumidimap.dll	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\midimap.dll	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\yumsimg32.dll	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\msimg32.dll	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe

Launches sc.exe 2 IoCs

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

pid	Process
3200	sc.exe
3060	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	net.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	943f44f05dbafa74f0fdac335aa051ae_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

Runs net.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
5088	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe
5088	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe
5088	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe
5088	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe
5088	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe
5088	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5088	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 5088 wrote to memory of 1524	5088	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	84
PID 5088 wrote to memory of 1524	5088	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	84
PID 5088 wrote to memory of 1524	5088	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	84
PID 5088 wrote to memory of 3200	5088	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	85
PID 5088 wrote to memory of 3200	5088	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	85
PID 5088 wrote to memory of 3200	5088	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	85
PID 5088 wrote to memory of 3060	5088	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	86
PID 5088 wrote to memory of 3060	5088	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	86
PID 5088 wrote to memory of 3060	5088	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	86
PID 5088 wrote to memory of 680	5088	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	90
PID 5088 wrote to memory of 680	5088	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	90
PID 5088 wrote to memory of 680	5088	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	90
PID 1524 wrote to memory of 3640	1524	net.exe	91
PID 1524 wrote to memory of 3640	1524	net.exe	91
PID 1524 wrote to memory of 3640	1524	net.exe	91

C:\Users\Admin\AppData\Local\Temp\943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\943f44f05dbafa74f0fdac335aa051ae_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:5088
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1524
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3640
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3200
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3060
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1723573843.dat, ServerMain c:\users\admin\appdata\local\temp\943f44f05dbafa74f0fdac335aa051ae_jaffacakes118.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:680

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

1723573843.dat

Path C:\Users\Admin\AppData\Local\Temp\1723573843.dat
Size 33KB
SHA256 94191274de548730bd2a683ac2e999f9e6a475a13ed67d084b1f0ce01bd749ea
MD5 69ba39c7b35ebf5a81573678fbc597e5
SHA1 bade29e9b881dac9f20c5a527453f48556f2b78f
SHA512 c3f585e401a7164a3bbe44438032f107def74a433079943e0c2d0653690b75067ace6097baed8a7ae04219a1ecb63bb1248892b91dfc3f35977fae49ca9d2555
SSDEEP 768:Z0yqYTNYRFojU8aeZOBk7oPhFDvZoTSqOH4mRqFgH:2yqihVaeV7oPhtvKbARi2
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/5088-0-0x0000000000400000-0x0000000000416000-memory.dmp

Download

memory/5088-13-0x0000000000400000-0x0000000000416000-memory.dmp