854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1

General

Target
jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe
Size 64KB
Sample260930-l6f89awsas
SHA256 854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1
MD5 5f40356106244de5ae356b8024b51f83
SHA1 f683023df0441fca528e34bbefd59d82d2260790
SHA512 1e74c30adeb2ab9313e8d26ececf57118d4572658fdf5aaeb6adbe3c0be73d8fc106a60baefb2e5ad468b9a8ef274bcd8f2f33e91fa8d3825482392ba7b6f518
SSDEEP 1536:qffRHe1qRMI/1wz8a0gyz8CXZ5ym2NmFuEHBJkPEHp:qf3RMI/Kz8eCJIfoFuwTkPEHp
TLSH
T1F453BF06E1CB486ADC81DC3902E19F364426A4F225755EFE8FD48FF9382D16DE5361CA
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
3112	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
3112	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\yuksuser.dll	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe
File created	C:\Windows\SysWOW64\ksuser.dll	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe
File created	C:\Windows\SysWOW64\yumidimap.dll	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe
File created	C:\Windows\SysWOW64\yumsimg32.dll	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe
File created	C:\Windows\SysWOW64\dllcache\msimg32.dll	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe
File created	C:\Windows\SysWOW64\sysapp29.dll	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe
File created	C:\Windows\SysWOW64\midimap.dll	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe
File created	C:\Windows\SysWOW64\msimg32.dll	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe

Launches sc.exe 2 IoCs

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

pid	Process
3756	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	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.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 6 IoCs

pid	Process
4948	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe
4948	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe
4948	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe
4948	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe
4948	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe
4948	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4948	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4948 wrote to memory of 4820	4948	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe	88
PID 4948 wrote to memory of 3756	4948	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe	89
PID 4948 wrote to memory of 4952	4948	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe	90
PID 4948 wrote to memory of 3112	4948	jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe	94
PID 4820 wrote to memory of 4512	4820	net.exe	95

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.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:4948
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4820
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4512
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3756
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4952
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1790762932.dat, ServerMain c:\users\admin\appdata\local\temp\jaffacakes118_854e55541ca15e0544812a906d68398832b2db88834021d1630c12ea8f194bc1.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:3112

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

1790762932.dat

Path C:\Users\Admin\AppData\Local\Temp\1790762932.dat
Size 32KB
SHA256 ca978794732fabd4fa1b0f3d1738e4a1a1f1ef8a18d126c671a0820fa5590ce8
MD5 e0476995e891b74829fb2c21b154dbea
SHA1 520d4f4d9a467840d289212d5efaa79a3d54bd87
SHA512 ed18ec3bf691785483dae35e60e8d0aeecfa111469512743d2add50bc88b84775ef53909b43a7b149c9dd32e63a1370b2b2087797b9ef0760fddfffdd41c1d17
SSDEEP 768:3qLJLLEIkVf5/75L+vjGm4dA5oCR+wEHsLT:aLJL3kV175L+vjGmdNRfEHsP
TLSH
T1B5E25C137A4789B2E2A2823136512BB98BFC68341E0715E9DB72D6871DB54C3DE36207
MD5 SHA1 SHA512 SSDEEP TLSH

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