f64a787928c9a1bb3523cdcf2f144137d133d02d2c748c013e49cc1875fed5c3

General

Target

943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe
Size

33KB
MD5

943f44f05dbafa74f0fdac335aa051ae
SHA1

4bfc2c356465fc6dae8fe21748c7ce8fd8e59f58
SHA256

f64a787928c9a1bb3523cdcf2f144137d133d02d2c748c013e49cc1875fed5c3
SHA512

bd477abe8bb92edab845a9b76d6601ddfa24d469c4bfb90af7d1009e35cde38514bdc06ebc61c652f8fd2ca9e48b5a7e580b5071e870f11570c039c91e062cee
SSDEEP

768:q+b6GCOvFgxj2pQs97O0sEA+JGY65eoGP+iDh0MWLSn:qdGCwAj2yWO0G7heoGP+Evn

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
2380	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
2380	rundll32.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2996-0-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral1/memory/2996-12-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Drops file in System32 directory 11 IoCs

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

Launches sc.exe 2 IoCs

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

pid	Process
2364	sc.exe
2376	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	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
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
2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe
2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe
2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2996 wrote to memory of 2080	2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	30
PID 2996 wrote to memory of 2080	2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	30
PID 2996 wrote to memory of 2080	2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	30
PID 2996 wrote to memory of 2080	2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	30
PID 2996 wrote to memory of 2364	2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	31
PID 2996 wrote to memory of 2364	2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	31
PID 2996 wrote to memory of 2364	2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	31
PID 2996 wrote to memory of 2364	2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	31
PID 2996 wrote to memory of 2376	2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	32
PID 2996 wrote to memory of 2376	2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	32
PID 2996 wrote to memory of 2376	2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	32
PID 2996 wrote to memory of 2376	2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	32
PID 2996 wrote to memory of 2380	2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	33
PID 2996 wrote to memory of 2380	2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	33
PID 2996 wrote to memory of 2380	2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	33
PID 2996 wrote to memory of 2380	2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	33
PID 2996 wrote to memory of 2380	2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	33
PID 2996 wrote to memory of 2380	2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	33
PID 2996 wrote to memory of 2380	2996	943f44f05dbafa74f0fdac335aa051ae_JaffaCakes118.exe	33
PID 2080 wrote to memory of 1652	2080	net.exe	37
PID 2080 wrote to memory of 1652	2080	net.exe	37
PID 2080 wrote to memory of 1652	2080	net.exe	37
PID 2080 wrote to memory of 1652	2080	net.exe	37

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:2996
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2080
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1652
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2364
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2376
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1723573849.dat, ServerMain c:\users\admin\appdata\local\temp\943f44f05dbafa74f0fdac335aa051ae_jaffacakes118.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2380

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\1723573849.dat

Filesize
33KB

MD5
9a1dec4afcea2ba6cc6787291b4a3da8

SHA1
32174f9cd6c07938995f37852a5b873271d478db

SHA256
534ad2fcc837e9e75492465b001d58a1ef3c485a88d77d463bd82032b966ade7

SHA512
a5b191866f4ad2c97fef4e39312e4e76f85f043c6da1fcde2e429daf281ed2af766312f7078e8c958c415c989da06b0688d874166f93954170c871760fac7169

Download Submit
memory/2996-0-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2996-12-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

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