c1cd061ed02dd9c82e6fba7423718cb4c71ccae379187e66349ad235d43fc2b1

General

Target

6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe
Size

33KB
MD5

6a5dff1402c457fec4ed0846d3bf3427
SHA1

1a2e0955badb57a335c819308bf4b094ba492ffd
SHA256

c1cd061ed02dd9c82e6fba7423718cb4c71ccae379187e66349ad235d43fc2b1
SHA512

985507fc1578dc4f9864b31c2ea5e9ce627b86dabef690269475f5ecf28b6747d760f4a52d7f7bf4d6c425a2419f7f4b21f74f47ebefe97fdc3058efa50021c7
SSDEEP

768:MvWzqcMcMkrWn+1f1pc/2Id5uVqwXSNjrFmEE3mX7Ue5:MHcM2rWn+ZQcqwiNjrcEEAIe5

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
4360	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
4360	rundll32.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2352-0-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral2/memory/2352-13-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Drops file in System32 directory 11 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\yuksuser.dll	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\yuksuser.dll	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\ksuser.dll	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\yumidimap.dll	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\msimg32.dll	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\midimap.dll	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\yumsimg32.dll	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\msimg32.dll	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\sysapp30.dll	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe

Launches sc.exe 2 IoCs

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

pid	Process
4932	sc.exe
4144	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	6a5dff1402c457fec4ed0846d3bf3427_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 6 IoCs

pid	Process
2352	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe
2352	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe
2352	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe
2352	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe
2352	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe
2352	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2352	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2352 wrote to memory of 3496	2352	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe	84
PID 2352 wrote to memory of 3496	2352	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe	84
PID 2352 wrote to memory of 3496	2352	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe	84
PID 2352 wrote to memory of 4932	2352	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe	85
PID 2352 wrote to memory of 4932	2352	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe	85
PID 2352 wrote to memory of 4932	2352	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe	85
PID 2352 wrote to memory of 4144	2352	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe	86
PID 2352 wrote to memory of 4144	2352	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe	86
PID 2352 wrote to memory of 4144	2352	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe	86
PID 2352 wrote to memory of 4360	2352	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe	90
PID 2352 wrote to memory of 4360	2352	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe	90
PID 2352 wrote to memory of 4360	2352	6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe	90
PID 3496 wrote to memory of 3868	3496	net.exe	91
PID 3496 wrote to memory of 3868	3496	net.exe	91
PID 3496 wrote to memory of 3868	3496	net.exe	91

C:\Users\Admin\AppData\Local\Temp\6a5dff1402c457fec4ed0846d3bf3427_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\6a5dff1402c457fec4ed0846d3bf3427_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:2352
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3496
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3868
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4932
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4144
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1721798231.dat, ServerMain c:\users\admin\appdata\local\temp\6a5dff1402c457fec4ed0846d3bf3427_jaffacakes118.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:4360

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\1721798231.dat

Filesize
33KB

MD5
9d4a5bc50b48c654eed239b1b5a5422f

SHA1
3272ef5d68e7784590486c1c5994825c4c148193

SHA256
5c6bd826eb8cca52e71419740876323d3ddd17f3e4f0b113dbd6da4611a7d125

SHA512
aee004b7223f78b5425b4ffd1fd07b64cc923a3f1dbce853da703b7357f79468d70a55922b389dc4234ceddfea3cad250dc2e452d6f76392c4a41f4447c09e04

Download Submit
memory/2352-0-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2352-13-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

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