c380ca9e6b302c11cc1e23f92aadb985ecd0ca0eab356f41d8745b95e41fe841

General

Target

717249c759b5d75419246371f9c4c094_JaffaCakes118.exe
Size

32KB
MD5

717249c759b5d75419246371f9c4c094
SHA1

1ea3037e1af1cbdb8be8893b01f572ea6558d27b
SHA256

c380ca9e6b302c11cc1e23f92aadb985ecd0ca0eab356f41d8745b95e41fe841
SHA512

29cdbf43889f288bafd7b9008304996fecb018bfc326997a7575887f37f423944dbc2b7e643cb37371774297dfd99feff9eca6357a0f9b28a915a7f631184e90
SSDEEP

768:99PpmRFCRxWFfw6ww2W8QIF6T6sfxTJl3QPlyMAGeAPRq:jPWCRxWF/ww2WgF6T5pJxQPlRTeAPRq

Score

10^/10

discovery evasion execution spyware stealer 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
3852	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
3852	rundll32.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1628-0-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral2/memory/1628-3-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral2/memory/1628-14-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Drops file in System32 directory 8 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\YUksuser.dll	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\ksuser.dll	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\YUmidimap.dll	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\midimap.dll	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\sysapp7.dll	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\YUksuser.dll	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe

Launches sc.exe 2 IoCs

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

pid	Process
1656	sc.exe
424	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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1628	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe
1628	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe
1628	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe
1628	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe
1628	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe
1628	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1628	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1628 wrote to memory of 644	1628	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe	97
PID 1628 wrote to memory of 644	1628	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe	97
PID 1628 wrote to memory of 644	1628	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe	97
PID 1628 wrote to memory of 1656	1628	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe	98
PID 1628 wrote to memory of 1656	1628	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe	98
PID 1628 wrote to memory of 1656	1628	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe	98
PID 1628 wrote to memory of 424	1628	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe	99
PID 1628 wrote to memory of 424	1628	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe	99
PID 1628 wrote to memory of 424	1628	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe	99
PID 1628 wrote to memory of 3852	1628	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe	102
PID 1628 wrote to memory of 3852	1628	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe	102
PID 1628 wrote to memory of 3852	1628	717249c759b5d75419246371f9c4c094_JaffaCakes118.exe	102
PID 644 wrote to memory of 600	644	net.exe	104
PID 644 wrote to memory of 600	644	net.exe	104
PID 644 wrote to memory of 600	644	net.exe	104

C:\Users\Admin\AppData\Local\Temp\717249c759b5d75419246371f9c4c094_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\717249c759b5d75419246371f9c4c094_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:1628
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:644
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:600
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1656
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:424
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1721945818.dat, ServerMain c:\users\admin\appdata\local\temp\717249c759b5d75419246371f9c4c094_jaffacakes118.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:3852

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

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Service Stop

2

T1489

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\1721945818.dat

Filesize
32KB

MD5
13b20de9cf287e90c6b7515f77e5334e

SHA1
e239866045dc30c151695bbcd1baf141edbf4a57

SHA256
6234bafce39922df5c976171caa5ad5f1cd1f6cfa5ebe19410f15ccb52549c9a

SHA512
b30abad0bcfcffc8cf6aa39e2232b42eb7ee90998a0fa639ced682bd0c377e95913bee09c47e7f22950d29938729b8fbf3d13aacdc37fd55d41cc4eb16a11575

Download Submit
memory/1628-0-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1628-3-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1628-14-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

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