055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff

General

Target
jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe
Size 64KB
Sample260924-mcm1dabb82
SHA256 055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff
MD5 90ca4dd8a33f906be7b613ec8d47c8a8
SHA1 b1f26f204bc33340982fce280415e8ed14fc0ea5
SHA512 293b7b1a8a213fd3ebe1feb5deac285fec11449a68f785bd2444c04f243403380e0f43b301605103190fd820e6cea30e52e70123033c1682a0b096e537bf4623
SSDEEP 768:nQT+jKEXN2d5GFJEJ9R2qiWAxtsWqXiz1b1f1ZY5mn2vP0aM4dEsLJzW:QaFdHO9kqiWA7sbSP1ZzKsuEsLJzW
TLSH
T1BD53BF06E5CB44A7DC90D83801D2AF79482669F229B00EFE6FD19FF9382D159E5372C9
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
4708	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
4708	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_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe
File created	C:\Windows\SysWOW64\dllcache\msimg32.dll	jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe
File created	C:\Windows\SysWOW64\sysapp9.dll	jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe
File created	C:\Windows\SysWOW64\ksuser.dll	jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe
File created	C:\Windows\SysWOW64\yumidimap.dll	jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe
File created	C:\Windows\SysWOW64\midimap.dll	jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe
File created	C:\Windows\SysWOW64\yumsimg32.dll	jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe
File created	C:\Windows\SysWOW64\msimg32.dll	jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe

Launches sc.exe 2 IoCs

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

pid	Process
1776	sc.exe
3484	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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1732	jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe
1732	jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe
1732	jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe
1732	jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe
1732	jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe
1732	jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1732	jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1732 wrote to memory of 4116	1732	jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe	88
PID 1732 wrote to memory of 3484	1732	jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe	89
PID 1732 wrote to memory of 1776	1732	jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe	90
PID 1732 wrote to memory of 4708	1732	jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe	91
PID 4116 wrote to memory of 3220	4116	net.exe	95

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.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:1732
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4116
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3220
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3484
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1776
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1790245263.dat, ServerMain c:\users\admin\appdata\local\temp\jaffacakes118_055a232bb175369065e88be8af78ecd9aad4b36e225bb6305bacf6f7bae721ff.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:4708

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

1790245263.dat

Path C:\Users\Admin\AppData\Local\Temp\1790245263.dat
Size 34KB
SHA256 bbc91b0d4b354943429158700528f498e2b5538727fff032a3bc5c82760903e7
MD5 d433a71a239b5b653283b6757da58b9d
SHA1 ab5b2d7df5cc16659fc3a76e5b7fb11d8a431f43
SHA512 4efda219a3b2d10c541fe51be8d33d3eab36886842ac40036f1b5d236215aa544be2fadedddafcbd85b23dc0cee985c5036f3943fad60bb8ffca84813fb8e7db
SSDEEP 768:zsCMDCoO69hJ4actGexFjUylN7gzZSiO1m2O6XRoJ9:zsCMDCy0tGe3oyX7gzZE/RoJ9
TLSH
T143F26C66BB0745B3E1A3823076953BB58BF828341E0755E9DB72D78B1DB01C3DA7A207
MD5 SHA1 SHA512 SSDEEP TLSH

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