1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155

General

Target
jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe
Size 64KB
Sample260925-2wlc8a1wg1
SHA256 1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155
MD5 a86ce259c5fc3cf0bdadccfae59dcd5b
SHA1 259400d939bd0c980f439b19c0ab8c90fc572232
SHA512 dab52e143e3f647174f4d029ed4d57052056e8179983458cec8e527b3ad27f4cad9b5644366573069c8ca416bbbbeeb6e52021f4c02fd2f3aa7fa6b0c7e09e6f
SSDEEP 1536:rUTC5hxGBMCFnmDV67GtTn0b4/ebdauqI0XEIw:rUTCYpq67gpmf0XEIw
TLSH
T1C5539D46E1C74493CA95CD3C02E28BB8442664E629724EFD5FD88FF8782E16DD4372CA
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
2580	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
2580	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 opened for modification	C:\Windows\SysWOW64\YUksuser.dll	jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe
File created	C:\Windows\SysWOW64\ksuser.dll	jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe
File created	C:\Windows\SysWOW64\YUmidimap.dll	jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe
File created	C:\Windows\SysWOW64\midimap.dll	jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe
File created	C:\Windows\SysWOW64\sysapp31.dll	jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe
File created	C:\Windows\SysWOW64\YUksuser.dll	jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe

Launches sc.exe 2 IoCs

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

pid	Process
1912	sc.exe
2396	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	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.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

Runs net.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
988	jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe
988	jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe
988	jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe
988	jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe
988	jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe
988	jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
988	jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 988 wrote to memory of 4116	988	jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe	86
PID 988 wrote to memory of 2396	988	jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe	87
PID 988 wrote to memory of 1912	988	jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe	88
PID 988 wrote to memory of 2580	988	jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe	90
PID 4116 wrote to memory of 4564	4116	net.exe	93

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.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:988
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4116
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4564
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2396
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1912
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1790376958.dat, ServerMain c:\users\admin\appdata\local\temp\jaffacakes118_1cc02ac820d4e6b29a795191137e3c1669ee124c978b1b8c0ce5a03083f50155.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2580

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

Replay Monitor

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Downloads

1790376958.dat

Path C:\Users\Admin\AppData\Local\Temp\1790376958.dat
Size 32KB
SHA256 f817e285d894dc322c0abd668687f9e649e7d403c0d80f42935120e120e5a5c7
MD5 2b87a3f3f4dad72e0b98e5c4caf5ae4d
SHA1 41085d106442da5e5efde28a667794b5cde591db
SHA512 5889dcc54ebb3ed62cf09f0710760542e0c95819497fe4388305356160d219a00221c78731b833cb135c492b53dcc75d8693e8676b52f2ba84b861d0ed984dd1
SSDEEP 768:fqnOeTNYmNXW/t8/lo7tRypE5hqD5SROde:fqnOerUt8a7tRQakgROY
TLSH
T134E26B637A5784A3E3DB4230B9062F7EDBBCA9300A469556D76347CA1CB02C3EA75347
MD5 SHA1 SHA512 SSDEEP TLSH

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