bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d

General

Target
jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe
Size 64KB
Sample260924-mcjmysbb76
SHA256 bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d
MD5 cb405822045c117d5be4b02b3a75ad87
SHA1 fcf3a3150010c6cd1ecce4549ea7d1ed3757b8ba
SHA512 1cb16ad05353ae98214adbf3c604014f4545ae8c983c84cc1ff8fc2ba2f51141868e26f84cdcba969564eeba83539e2aaca0c9a1b2e4b002b0e0af7bc1dae51f
SSDEEP 1536:qffRHe1qRMI/1wz8a0gyz8CXZ5ym2NmFuEHBJA8:qf3RMI/Kz8eCJIfoFuwTA8
TLSH
T18953AF06E1CB486ADC81DC3902E15F364426A4F225B56EFE8FD48FF9382D16DD5362CA
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
848	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
848	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\yumsimg32.dll	jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe
File created	C:\Windows\SysWOW64\yuksuser.dll	jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe
File created	C:\Windows\SysWOW64\ksuser.dll	jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe
File created	C:\Windows\SysWOW64\yumidimap.dll	jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe
File created	C:\Windows\SysWOW64\msimg32.dll	jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe
File created	C:\Windows\SysWOW64\dllcache\msimg32.dll	jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe
File created	C:\Windows\SysWOW64\sysapp29.dll	jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe
File created	C:\Windows\SysWOW64\midimap.dll	jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe

Launches sc.exe 2 IoCs

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

pid	Process
4608	sc.exe
2904	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_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.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

Runs net.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2664	jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe
2664	jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe
2664	jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe
2664	jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe
2664	jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe
2664	jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2664	jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2664 wrote to memory of 4864	2664	jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe	89
PID 2664 wrote to memory of 2904	2664	jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe	90
PID 2664 wrote to memory of 4608	2664	jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe	91
PID 2664 wrote to memory of 848	2664	jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe	95
PID 4864 wrote to memory of 5484	4864	net.exe	96

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.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:2664
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4864
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5484
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2904
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4608
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1790245260.dat, ServerMain c:\users\admin\appdata\local\temp\jaffacakes118_bfe48f8fbb1d22cd5ce2aaa15a011717c62e55a26501510e5d62315af78f241d.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:848

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

1790245260.dat

Path C:\Users\Admin\AppData\Local\Temp\1790245260.dat
Size 32KB
SHA256 b96265bdca0e75acaa4d1f0d351fb6d172cd098bf1f89818ba9a12b4ea52aeb5
MD5 2a28b5c482b550f63fdb674dc8211785
SHA1 28a2b8e995082c857e4d13198fe478ab51cdefc4
SHA512 18c70edb4f05bda7f522781294744932398adda2eadbb3e6b009e83022261890d0e36a329e317f4dc1e0decc43a97cfa94bc5c915b5ad7a723f678c4d48daa94
SSDEEP 768:EqLJLLEIkVf5/75L+vjGm4dA5oCR+xdry:lLJL3kV175L+vjGmdNRgd2
TLSH
T1EDE26C137A4789B2E2A2823176512BB99BFC28301E0716E9DB72D7875DB54C3DF36207
MD5 SHA1 SHA512 SSDEEP TLSH

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