fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd

General

Target
jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe
Size 64KB
Sample260924-mgff4attet
SHA256 fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd
MD5 3de2c6dcd08f08b0ba50ac08f093590d
SHA1 7b7707f18a3f641246cb7ddb2ce31aadca5e9899
SHA512 09a6950df13dad3a0ac13dde962adfb597cda662c61ae5ce3f6f48c6bbbb3b06a706253a0f1a23060d8cf5b8bf8a59ac4f4b3cf055fff09ef4fe3b1adb108131
SSDEEP 768:qenNaSn2rd5GFA0GDf0/Sv34GD6k3yuQPH9OVTDeuNEsvBtV1:qMX2Ebuh4ooyek5vDV1
TLSH
T1E6537B9EA689CDD2ED0315B146236275C173725356E698A6EECCC8DC4B3ED017E30ECA
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
3452	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
3452	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 10 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ksuser.dll	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe
File created	C:\Windows\SysWOW64\yumidimap.dll	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe
File created	C:\Windows\SysWOW64\midimap.dll	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe
File created	C:\Windows\SysWOW64\dllcache\msimg32.dll	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe
File created	C:\Windows\SysWOW64\yumsimg32.dll	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe
File created	C:\Windows\SysWOW64\msimg32.dll	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe
File created	C:\Windows\SysWOW64\sysapp9.dll	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe
File created	C:\Windows\SysWOW64\yuksuser.dll	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe

Launches sc.exe 2 IoCs

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

pid	Process
5776	sc.exe
4160	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	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.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

Runs net.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
5528	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe
5528	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe
5528	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe
5528	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe
5528	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe
5528	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5528	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5528 wrote to memory of 4392	5528	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe	89
PID 5528 wrote to memory of 4160	5528	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe	90
PID 5528 wrote to memory of 5776	5528	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe	91
PID 5528 wrote to memory of 3452	5528	jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe	95
PID 4392 wrote to memory of 4596	4392	net.exe	96

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.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:5528
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4392
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4596
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4160
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5776
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1790245559.dat, ServerMain c:\users\admin\appdata\local\temp\jaffacakes118_fc384624163a343dc59cf21977e793e1a936316dd06b63b1b74af1a367e639bd.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:3452

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

1790245559.dat

Path C:\Users\Admin\AppData\Local\Temp\1790245559.dat
Size 34KB
SHA256 591caff03fffea69eacdc68acbfbd32614ade80085caf899135e78cb27abae6a
MD5 ceb480aa7d6f64dca10df055fb302d27
SHA1 e135a0f2196fa99a7bb46cb23f778da278b5fb70
SHA512 71a4b50827a5108eeb67edf04e757cce70a54f0184beb104960161863a5f284035b8f97caec069ef70a92258aad0051780a546c4d2af399652d0ef613e5bd2d6
SSDEEP 768:yqCM7tWeKCJfaEtOexFjAOll7wzxOSO1m2OHjRpX:yqR7OotOe3MOf7wzxo4RV
TLSH
T106F26C56BA4789A3E1E3823076503BB58BF828341E0355E9DB73CB8B1D746C7DA39207
MD5 SHA1 SHA512 SSDEEP TLSH

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