1725977e445ad1e82304069f31fb06b806db6e368bea8ace579c2480790e9b41

General

Target

861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe
Size

34KB
MD5

861295047d7634d75052cdcabba4ebb5
SHA1

a733a78e10dd39a5bd79f617e95e79614a78037f
SHA256

1725977e445ad1e82304069f31fb06b806db6e368bea8ace579c2480790e9b41
SHA512

3011bab3b468d5baf82da680f2670bc325c066c604a5ac1f7b86ac8d06876e60019acafb239e6bab191c4b0d378c11dfee0e4f429cffca8314d8a49ee1cb49e7
SSDEEP

768:yvQliNyTKkMVGu4k1PkT2WfOU/dwFxTQK5T9EO2ToLUlO1f2x3:yPyeqT2YdiTQKhV2Tg7f2x

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
2388	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
2388	rundll32.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2568-0-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral1/memory/2568-11-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Drops file in System32 directory 11 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\yuksuser.dll	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\yumsimg32.dll	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\msimg32.dll	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\msimg32.dll	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\sysapp2.dll	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\yuksuser.dll	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\ksuser.dll	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\yumidimap.dll	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\midimap.dll	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe

Launches sc.exe 2 IoCs

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

pid	Process
2360	sc.exe
2440	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	861295047d7634d75052cdcabba4ebb5_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
2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe
2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe
2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2568 wrote to memory of 3048	2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe	30
PID 2568 wrote to memory of 3048	2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe	30
PID 2568 wrote to memory of 3048	2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe	30
PID 2568 wrote to memory of 3048	2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe	30
PID 2568 wrote to memory of 2360	2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe	31
PID 2568 wrote to memory of 2360	2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe	31
PID 2568 wrote to memory of 2360	2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe	31
PID 2568 wrote to memory of 2360	2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe	31
PID 2568 wrote to memory of 2440	2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe	32
PID 2568 wrote to memory of 2440	2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe	32
PID 2568 wrote to memory of 2440	2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe	32
PID 2568 wrote to memory of 2440	2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe	32
PID 2568 wrote to memory of 2388	2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe	35
PID 2568 wrote to memory of 2388	2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe	35
PID 2568 wrote to memory of 2388	2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe	35
PID 2568 wrote to memory of 2388	2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe	35
PID 2568 wrote to memory of 2388	2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe	35
PID 2568 wrote to memory of 2388	2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe	35
PID 2568 wrote to memory of 2388	2568	861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe	35
PID 3048 wrote to memory of 2480	3048	net.exe	37
PID 3048 wrote to memory of 2480	3048	net.exe	37
PID 3048 wrote to memory of 2480	3048	net.exe	37
PID 3048 wrote to memory of 2480	3048	net.exe	37

C:\Users\Admin\AppData\Local\Temp\861295047d7634d75052cdcabba4ebb5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\861295047d7634d75052cdcabba4ebb5_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:2568
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3048
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2480
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2360
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2440
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1723293332.dat, ServerMain c:\users\admin\appdata\local\temp\861295047d7634d75052cdcabba4ebb5_jaffacakes118.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2388

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\1723293332.dat

Filesize
34KB

MD5
7269f00c5b6d8d8b2707403f2d710f7a

SHA1
f01d2fff4622781706ae663dd17943f9d15cfabe

SHA256
561fbbc39e722f27d87eb8cdca645e9dafe8167e376fa517e7ccb3804c6aef2e

SHA512
5c15354a7231e394b081b1ba2ee491d5383bdc1578b3c051ce43a5ffaf45595275225953f9f3f2bd2d5f74591af9d48167d07dd66419b80bef717011b60ec721

Download Submit
memory/2568-0-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2568-11-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

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