26d1c17627cace8b1de05fa5c542e5934ee8f79c12235048a5a865174c50b229

General

Target

fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe
Size

32KB
MD5

fb7f311c724b5634fbff8893c90caa7e
SHA1

b699d65d4d6cc19832bd277d8eb824b5c454c9a9
SHA256

26d1c17627cace8b1de05fa5c542e5934ee8f79c12235048a5a865174c50b229
SHA512

6f4bfd1e458e1c8fa48bd7620440aab9e3cbfe2d356c38c123b973b7408485b9afaebe0961c70de607fda456f72a3c79e941270216964b4b43ae292908855e12
SSDEEP

768:JGCFhVReQmX4OzZWXl9oII879e8xtZbKKEw/+3fb:JTHReTXXzsXl9gQDZOVfb

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
560	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
560	rundll32.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Drops file in System32 directory 8 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ksuser.dll	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\YUmidimap.dll	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\midimap.dll	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\sysapp7.dll	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\YUksuser.dll	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\YUksuser.dll	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4404-0-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral2/memory/4404-4-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral2/memory/4404-14-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Launches sc.exe 2 IoCs

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

pid	Process
4800	sc.exe
1592	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	fb7f311c724b5634fbff8893c90caa7e_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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4404	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe
4404	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe
4404	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe
4404	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe
4404	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe
4404	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4404	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4404 wrote to memory of 3164	4404	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe	89
PID 4404 wrote to memory of 3164	4404	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe	89
PID 4404 wrote to memory of 3164	4404	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe	89
PID 4404 wrote to memory of 4800	4404	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe	90
PID 4404 wrote to memory of 4800	4404	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe	90
PID 4404 wrote to memory of 4800	4404	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe	90
PID 4404 wrote to memory of 1592	4404	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe	91
PID 4404 wrote to memory of 1592	4404	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe	91
PID 4404 wrote to memory of 1592	4404	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe	91
PID 4404 wrote to memory of 560	4404	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe	93
PID 4404 wrote to memory of 560	4404	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe	93
PID 4404 wrote to memory of 560	4404	fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe	93
PID 3164 wrote to memory of 2556	3164	net.exe	96
PID 3164 wrote to memory of 2556	3164	net.exe	96
PID 3164 wrote to memory of 2556	3164	net.exe	96

C:\Users\Admin\AppData\Local\Temp\fb7f311c724b5634fbff8893c90caa7e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fb7f311c724b5634fbff8893c90caa7e_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:4404
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3164
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2556
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4800
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1592
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1727497369.dat, ServerMain c:\users\admin\appdata\local\temp\fb7f311c724b5634fbff8893c90caa7e_jaffacakes118.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:560

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

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

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\1727497369.dat

Filesize
32KB

MD5
e9d7e6762699f3cc6130de1bd9ac83e8

SHA1
dbbead7817bedb750d3f17f528c27e4029405a5b

SHA256
0c353ad80eb741c20db555c77e72a8ea0b97d657859c3b633c148b0da9de27a9

SHA512
71fa3ddac0390dbe945d0bd841445cc6a1cd33a727252031f60c79bf2db5f8ba3f6e9240a366da199e0bd02c85d1bdcdf713980d7b066c53c2305e18a1f270dd

Download Submit
memory/4404-0-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/4404-4-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/4404-14-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

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