4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715

General

Target
jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe
Size 56KB
Sample260925-2xwwcaab39
SHA256 4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715
MD5 f5afba988a7a4616b365e022bdb6ab68
SHA1 8c183dfffeafa5f0d3355e14fc0570c40f527e36
SHA512 e30c8b04279ff25a8d67644fa6fd0971a28bf684f09d700f7094475d1070632aa6af24de213fa8656558e58939fd96e5553891b5c5a21e535198b9bee851c669
SSDEEP 768:9kdbjXqhCOd5GFJQRm2XaBwtgcZb8gHJT6DjAK:6dShCvJQRmIaBwtge8GODjAK
TLSH
T1F5433806D1C70593DE60DD3816E94BB948A661F126B24EFE4FD08FF9342E168E53B2C9
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

defense_evasion discovery execution

Malware Config

Signatures

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
3612	rundll32.exe

Disables service(s) 3 TTPs
defense_evasion execution

Windows Service
T1543.003

Service Stop
T1489

Service Execution
T1569.002

Loads dropped DLL 1 IoCs

pid	Process
3612	rundll32.exe

Stops running service(s) 4 TTPs
defense_evasion execution

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Service Execution
T1569.002

Drops file in System32 directory 8 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\YUksuser.dll	jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe
File opened for modification	C:\Windows\SysWOW64\YUksuser.dll	jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe
File created	C:\Windows\SysWOW64\ksuser.dll	jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe
File created	C:\Windows\SysWOW64\YUmidimap.dll	jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe
File created	C:\Windows\SysWOW64\midimap.dll	jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe
File created	C:\Windows\SysWOW64\sysapp33.dll	jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe

Launches sc.exe 2 IoCs

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

pid	Process
1948	sc.exe
1168	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2312	jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe
2312	jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe
2312	jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe
2312	jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe
2312	jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe
2312	jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2312	jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2312 wrote to memory of 2176	2312	jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe	86
PID 2312 wrote to memory of 1168	2312	jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe	87
PID 2312 wrote to memory of 1948	2312	jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe	88
PID 2312 wrote to memory of 3612	2312	jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe	89
PID 2176 wrote to memory of 2644	2176	net.exe	93

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.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:2312
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2176
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2644
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1168
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1948
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1790377094.dat, ServerMain c:\users\admin\appdata\local\temp\jaffacakes118_4375f127a9ffae2d19dc6dea4a830846fc25d8a07f7bc95df3681db586071715.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:3612

Network

MITRE ATT&CK Enterprise v16

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

Indicator Removal

1

T1070

File Deletion

1

T1070.004

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

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Downloads

1790377094.dat

Path C:\Users\Admin\AppData\Local\Temp\1790377094.dat
Size 25KB
SHA256 8ec3c767c523255d195aa6f7fdccfacbef3203254ce57192027c42ed373d24ff
MD5 a9e414a128bae04ea7be79bf75d60703
SHA1 ee8417f3dcd3b6967b87377b2232fc19ccfd48ec
SHA512 ab5fc065388e4484e9183835cb47ac3af6351536cbbba2efbcbe790d9356f352eadf0a3ae6cd1d9627dfc6dec96c2ce31b1028371dbda3b840152d9dc94431c1
SSDEEP 384:DycaEtizgN40BENOnkYXB12KRmE77bNYR6N02Y6awz7aRBHOqV:DPaEtE0Bo0B12tE7lYRI056hzuRNOqV
TLSH
T139C25B13B30B09A2E1D6053071511FBA9FFC25301F0A466ADFA2978B5CB8AC7ED32247
MD5 SHA1 SHA512 SSDEEP TLSH

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