83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340

General

Target
jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.exe
Size 64KB
Sample260925-2xe8la1xas
SHA256 83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340
MD5 0e90b064b371aff1a0e36a374db83f1b
SHA1 43b307c3f67c0f20627817b344641d3911b188de
SHA512 5b2751cc13505cd4b5a7bb2dadadd8fc9f524dc3e7ffd40f2b89de56c555e813bb16671c81c5dbb5b8735a688a9b2d25b6564918cbc77a08dbe34810cd2c0dd2
SSDEEP 1536:WX4kVJxeRt5YUPQZ/1FNE2kgcFpoLp4n:WbURt5rCNE2LmoV4n
TLSH
T103538B06D1CB8053DD61CC3812E62FBA496661E61AB65AFE8FC18FF8782D45CD13B1C9
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
4676	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
4676	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 7 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\YUksuser.dll	jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.exe
File created	C:\Windows\SysWOW64\ksuser.dll	jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.exe
File created	C:\Windows\SysWOW64\YUmidimap.dll	jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.exe
File created	C:\Windows\SysWOW64\midimap.dll	jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.exe
File created	C:\Windows\SysWOW64\sysapp1.dll	jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.exe

Launches sc.exe 2 IoCs

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

pid	Process
4300	sc.exe
5520	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_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2908	jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.exe
2908	jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.exe
2908	jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.exe
2908	jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.exe
2908	jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.exe
2908	jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2908	jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2908 wrote to memory of 4544	2908	jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.exe	89
PID 2908 wrote to memory of 5520	2908	jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.exe	90
PID 2908 wrote to memory of 4300	2908	jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.exe	91
PID 2908 wrote to memory of 4676	2908	jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.exe	95
PID 4544 wrote to memory of 5880	4544	net.exe	96

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.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:2908
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4544
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5880
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5520
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4300
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1790377048.dat, ServerMain c:\users\admin\appdata\local\temp\jaffacakes118_83226d74c9c18747d465afd42df65df28662a503545a380755fc6a5b63c93340.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:4676

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

1790377048.dat

Path C:\Users\Admin\AppData\Local\Temp\1790377048.dat
Size 34KB
SHA256 f6963e80b30e3747333e1cef943e5e498443eaada81f892c2ff3df38457f54d3
MD5 4df24a92af5f07fdff6cc99e738ed77a
SHA1 b761f641a2f38819500a5f983a028558311da5df
SHA512 1a912903b2eb5350840b9a6086a3f3b630831aec01d477e4e94307840999185f5362cb237b0e2e589fb60149d748a93651fb559768ecf5e6481ca45e4a7b5634
SSDEEP 768:57mRDL0cgngbMzSJOQc7S/DftqqhnP0RROSni:lmRD7gHzS0d7S/1pMRROSi
TLSH
T1B2F25C127A0785B2D1A3823072413FB59FF818745E07616AEB73CB9A1C759C3DE7624B
MD5 SHA1 SHA512 SSDEEP TLSH

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