2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c

General

Target
jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe
Size 64KB
Sample260925-wtfr3ashrh
SHA256 2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c
MD5 ee469b95831c8ec1c6e38683ac868be1
SHA1 2099dbc96955c72199e97584423aa7860c9bdcfe
SHA512 441669811b2f3543a8b2e0d61cd9cc09b6c648643069e5ac25ce44bdf1355551e5a23c9ef2c4564bae0dccdddf1ea32e493e22feaaf4ab002f658704c00b1965
SSDEEP 1536:i2VzEIulRMPInnS7aVVtjbUbRue4rkzLZZHxpM:i2pulRMPInnBVVtuRue4I3ZZxpM
TLSH
T19C53386EA485CDD6EC0786B14223A675C57331A723DA59A6EEDCCCCC072AD053E30DCA
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
4456	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
4456	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 11 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ksuser.dll	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe
File created	C:\Windows\SysWOW64\yumsimg32.dll	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe
File created	C:\Windows\SysWOW64\msimg32.dll	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe
File created	C:\Windows\SysWOW64\dllcache\msimg32.dll	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe
File created	C:\Windows\SysWOW64\sysapp2.dll	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe
File created	C:\Windows\SysWOW64\yuksuser.dll	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe
File opened for modification	C:\Windows\SysWOW64\yuksuser.dll	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe
File created	C:\Windows\SysWOW64\yumidimap.dll	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe
File created	C:\Windows\SysWOW64\midimap.dll	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe

Launches sc.exe 2 IoCs

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

pid	Process
3492	sc.exe
2372	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_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.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	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1392	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe
1392	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe
1392	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe
1392	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe
1392	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe
1392	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1392	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1392 wrote to memory of 3300	1392	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe	88
PID 1392 wrote to memory of 2372	1392	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe	89
PID 1392 wrote to memory of 3492	1392	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe	90
PID 1392 wrote to memory of 4456	1392	jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe	94
PID 3300 wrote to memory of 4420	3300	net.exe	95

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.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:1392
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3300
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4420
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2372
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3492
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1790359956.dat, ServerMain c:\users\admin\appdata\local\temp\jaffacakes118_2ec59666f69d60f6b17de70155e0df27ab8ed31fc865d3306ddd370cf2c5ab4c.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:4456

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

1790359956.dat

Path C:\Users\Admin\AppData\Local\Temp\1790359956.dat
Size 34KB
SHA256 d7ea271dbd5149f1820097e0d04ebf13793bfbf865c790557b6e0570c9469ad9
MD5 f9a37aee9875cc24cd9bb31f23184d76
SHA1 2916a54ee7251003c4d6a4daf505b42cdb072b8e
SHA512 c4ab9d246f91d7dfa5bd363a0bcaea888b81f17b9bd0820bfa2427427496192709f3c7411d06962bbbd96058f23df766bb9ee36170ccaa48a6f50f9864eb7d3f
SSDEEP 768:ePkbmnTTPBjupvnNr77OpcdPuOJk32RqyM44:YkbsTVjuf77Opob42Rqy+
TLSH
T106F23A137A468463E3CB42343A114FA98BFCBD301D465566F7627B8B1DB46C2EA3B607
MD5 SHA1 SHA512 SSDEEP TLSH

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Analysis

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