570d630957aa4a43f90a3003d01670efbf7cefd92119433526f446e3e3f26e5a

General

Target

bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe
Size

33KB
MD5

bf8c3b61ba5f6d78303aa40f6b9a639b
SHA1

0a00949876ad02f4d4a233aa81c9f65ac7f717d2
SHA256

570d630957aa4a43f90a3003d01670efbf7cefd92119433526f446e3e3f26e5a
SHA512

1cd3356798674069e187e15b81f8ebf5dd40823f12e3fb10fdfd2fd2fecc78cb18fc9a980173b72f6bc6ff0fd7b280b42ad7031bdd7ccd239598cfb76bcc10e2
SSDEEP

768:zeq5YtQ4Him7u0b0hrqv4fd08D9utAuiKvM0OBWgjUq8M:zzmC4Jy0bEGQlIAYvM0rI8

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
1600	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1600	rundll32.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3824-0-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral2/memory/3824-13-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Drops file in System32 directory 11 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\yumidimap.dll	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\msimg32.dll	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\sysapp18.dll	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\midimap.dll	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\yumsimg32.dll	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\msimg32.dll	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\yuksuser.dll	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\yuksuser.dll	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\ksuser.dll	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe

Launches sc.exe 2 IoCs

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

pid	Process
3516	sc.exe
5112	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	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bf8c3b61ba5f6d78303aa40f6b9a639b_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

Runs net.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3824	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe
3824	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe
3824	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe
3824	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe
3824	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe
3824	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3824	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3824 wrote to memory of 1612	3824	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe	86
PID 3824 wrote to memory of 1612	3824	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe	86
PID 3824 wrote to memory of 1612	3824	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe	86
PID 3824 wrote to memory of 5112	3824	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe	87
PID 3824 wrote to memory of 5112	3824	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe	87
PID 3824 wrote to memory of 5112	3824	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe	87
PID 3824 wrote to memory of 3516	3824	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe	88
PID 3824 wrote to memory of 3516	3824	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe	88
PID 3824 wrote to memory of 3516	3824	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe	88
PID 3824 wrote to memory of 1600	3824	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe	92
PID 3824 wrote to memory of 1600	3824	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe	92
PID 3824 wrote to memory of 1600	3824	bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe	92
PID 1612 wrote to memory of 3020	1612	net.exe	93
PID 1612 wrote to memory of 3020	1612	net.exe	93
PID 1612 wrote to memory of 3020	1612	net.exe	93

C:\Users\Admin\AppData\Local\Temp\bf8c3b61ba5f6d78303aa40f6b9a639b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\bf8c3b61ba5f6d78303aa40f6b9a639b_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:3824
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1612
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3020
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5112
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3516
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1724538630.dat, ServerMain c:\users\admin\appdata\local\temp\bf8c3b61ba5f6d78303aa40f6b9a639b_jaffacakes118.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:1600

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\1724538630.dat

Filesize
33KB

MD5
5281293894a7cc29cf562e989e9880e3

SHA1
68c3e490742fe84f64c4176e67f9b91709ae5150

SHA256
adb30f8fcfb8d43355e4dc8a00b6e9556d9944a9c4883cffb714c2e2c3462368

SHA512
47ac44530308782c390002610e1dfc96a3f948bda39cc054a8740b897bcb80704a28e439473d556bdea8f4bad07da4b6405efb91fab52f050e9a8d54f4745703

Download Submit
memory/3824-0-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3824-13-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

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