fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407

General

Target
jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe
Size 64KB
Sample260925-wlevsssgpg
SHA256 fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407
MD5 32dec58b01d1e02498095dacb48da0c2
SHA1 a094a7cd31e7f6bfa8132d1330e396d2a7cc985b
SHA512 ffc42b10d415622734b12802dc6c50879e368316ce2028a7e406a7129aa4ebcfb2ae649dd9a1f5312949ae4e9ed47eb8c79a3a6e09817cfe90e731c635a9d9cf
SSDEEP 768:y+Wz0KDndcQd5GFWCO62N9dLyXe56DzIGTzNfnKziwo6tiW1e:yAAnUfO6E9sO6DzRlKLozWI
TLSH
T16E535946E6C70013CD94C83C45E26FB945A1A5F225B24AFE4FD58FF9782E199D23B2C8
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
1076	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
1076	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\ksuser.dll	jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe
File created	C:\Windows\SysWOW64\YUmidimap.dll	jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe
File created	C:\Windows\SysWOW64\midimap.dll	jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe
File created	C:\Windows\SysWOW64\sysapp36.dll	jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe
File created	C:\Windows\SysWOW64\YUksuser.dll	jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe
File opened for modification	C:\Windows\SysWOW64\YUksuser.dll	jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe

Launches sc.exe 2 IoCs

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

pid	Process
4108	sc.exe
4952	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_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.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
2328	jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe
2328	jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe
2328	jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe
2328	jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe
2328	jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe
2328	jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2328	jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 3616	2328	jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe	86
PID 2328 wrote to memory of 4952	2328	jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe	87
PID 2328 wrote to memory of 4108	2328	jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe	88
PID 2328 wrote to memory of 1076	2328	jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe	90
PID 3616 wrote to memory of 2356	3616	net.exe	93

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.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:2328
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3616
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2356
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4952
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4108
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1790359219.dat, ServerMain c:\users\admin\appdata\local\temp\jaffacakes118_fcfbc2df18a944c06d26e287101c9854326a2b4210a9a878fe179bd176d2b407.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:1076

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

1790359219.dat

Path C:\Users\Admin\AppData\Local\Temp\1790359219.dat
Size 34KB
SHA256 0bf0988c3837221c76a53edeb8e347e3b8f05026039fe30348cf7c38cd11b88f
MD5 0546fd3dee9a5a5fd0fc1674481fa8fb
SHA1 727cc5119db50b0747ad9606039d6b6f43801a3a
SHA512 2cf9f28b5dcc2d93fa33d9529cc271c4b3a95ee66d08fb071c3e112d1c2db6d3df85124a42979a3980bb4220f07a54b02959f8e7b477a3ed6ec937c8428278e8
SSDEEP 768:N3VCCNLrvnBs9P3nTeO7sfG4uzgNiO6RiDN1B:lVCCNfBo3nB78szNFRGX
TLSH
T160F27D127A5744B2E193853031A22FBA8FF864301E07517DDB72C65B2D766C7EA3A347
MD5 SHA1 SHA512 SSDEEP TLSH

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