51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5

General

Target
jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe
Size 72KB
Sample260925-2xgresy16m
SHA256 51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5
MD5 ef7add8cf6ad049c3e569524aa398670
SHA1 afdf7aff523ddcad1f08034b36cad3c6d2b9506a
SHA512 b5dcc86b5e8a722742c064840621ffd2361bf9bd811faa04852723ed7abdc7b6ed691ac4d4ca05c916cc57e2d22b206286b39e18d4ef051c0abf24154ba36094
SSDEEP 1536:8lETiCymLi35WLxJV+WG8Mkn/MpyKpdXdsu:81E+35WLxJVG8H0pyIdCu
TLSH
T17B73374AD1CB0492DCA4CC3C00E64F69446665F629BA4AFE4FC49FF9382E05CD6372C9
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
4924	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
4924	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 7 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\sysapp10.dll	jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe
File created	C:\Windows\SysWOW64\YUksuser.dll	jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe
File created	C:\Windows\SysWOW64\ksuser.dll	jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe
File created	C:\Windows\SysWOW64\YUmidimap.dll	jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe
File created	C:\Windows\SysWOW64\midimap.dll	jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe

Launches sc.exe 2 IoCs

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

pid	Process
1448	sc.exe
1284	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	jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.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	net.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 8 IoCs

pid	Process
4312	jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe
4312	jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe
4312	jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe
4312	jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe
4312	jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe
4312	jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe
4312	jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe
4312	jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4312	jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4312 wrote to memory of 4684	4312	jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe	89
PID 4312 wrote to memory of 1448	4312	jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe	90
PID 4312 wrote to memory of 1284	4312	jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe	92
PID 4312 wrote to memory of 4924	4312	jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe	95
PID 4684 wrote to memory of 4664	4684	net.exe	96

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.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:4312
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4684
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4664
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1448
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1284
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1790377052.dat, ServerMain c:\users\admin\appdata\local\temp\jaffacakes118_51bc65bf5bd9b9127e41c3ef374797e113f2a4985085526b0908b296c5ca7fd5.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:4924

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

1790377052.dat

Path C:\Users\Admin\AppData\Local\Temp\1790377052.dat
Size 41KB
SHA256 0078d414dcd5f7d89ae5563ee4320a6750ab82c9a356594e678178a48c305dbb
MD5 6884f64e76c1af78a999fa6bd9857685
SHA1 d373c7f87ee3aa4cbc41b1056b7f4311d736ab23
SHA512 cfaac67b6761f549319c494639ba0f6625c89e89da86b909a4000d5543b7e3d2e8fcd3fa5b6d1da6180222e78274df823d2f8ef8fe8235fcc94ab4c2071fdaa2
SSDEEP 384:yqlbqr/fxQ0M9c9XNFtgHw36jYg2IIC3G974sD/77quBFdAAg+awpJKRkWXypTCW:fqbpQ0nPK6ID3Gj/7Hh2+hP6kWBJRoP
TLSH
T1C0138E527A164261D2E2863136652FBACBFC58301E07A578EF32C7971DF64CACA36643
MD5 SHA1 SHA512 SSDEEP TLSH

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