bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924

General

Target
jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe
Size 64KB
Sample260924-mcfajabb73
SHA256 bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924
MD5 f5fdfc50e74caf0e9c73e95de4f566c3
SHA1 353b31f5c820541d1f7b18080f33b167575f8973
SHA512 d2d935b057076ca59f739a6a5c1df3c1656b62c63923df46044279982e4c0bd705afb5cc90be149e6cf34b83eb8a15248c9ea162a51556313fafb174ab93fc05
SSDEEP 768:An9KQir7F2d5GFSMWyzcE+Gjilw6Xque7gco3sNe4cM4dE7I9M9:+vO7FHMe6GiNqp7gF3sNe4FuEM29
TLSH
T12C538D06E1CB0A93DD90CD3C02E69FB9442225E125764EFE5FD59FF9202E168E1376CA
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
4172	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
4172	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\sysapp18.dll	jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe
File created	C:\Windows\SysWOW64\midimap.dll	jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe
File created	C:\Windows\SysWOW64\yumsimg32.dll	jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe
File created	C:\Windows\SysWOW64\yuksuser.dll	jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe
File created	C:\Windows\SysWOW64\ksuser.dll	jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe
File created	C:\Windows\SysWOW64\yumidimap.dll	jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe
File created	C:\Windows\SysWOW64\msimg32.dll	jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe
File created	C:\Windows\SysWOW64\dllcache\msimg32.dll	jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe

Launches sc.exe 2 IoCs

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

pid	Process
3052	sc.exe
4588	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_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1248	jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe
1248	jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe
1248	jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe
1248	jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe
1248	jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe
1248	jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1248	jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1248 wrote to memory of 2340	1248	jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe	89
PID 1248 wrote to memory of 4588	1248	jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe	90
PID 1248 wrote to memory of 3052	1248	jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe	91
PID 1248 wrote to memory of 4172	1248	jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe	93
PID 2340 wrote to memory of 816	2340	net.exe	96

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.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:1248
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2340
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:816
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4588
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3052
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1790245257.dat, ServerMain c:\users\admin\appdata\local\temp\jaffacakes118_bae20b00011eee518355d9f8b3dc060f97af9a829b0cd0cc65f415e51b4e6924.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:4172

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

1790245257.dat

Path C:\Users\Admin\AppData\Local\Temp\1790245257.dat
Size 33KB
SHA256 7f0d82ebb16d59b039fe2bd4a1b8bc81fdc4547d55d97b11932fd7e32dcc6de3
MD5 0ca0527040b2c78250ee2d502a5e9dd4
SHA1 4b4416f2c4037bad32a18e31e037cdf73be7389f
SHA512 e64cf2930ea1e66e05e5008589c1d737c2a5c91521e38a3790d4385e883815a5eafe965b11cbe5855960a5e58a0a838241f76ad24c90c7d314d62ce32d6b1b10
SSDEEP 768:g0yqYTNYRFojU8aeZOBk7oPhFDvZoTSqOH4mRqFgH:ByqihVaeV7oPhtvKbARi2
TLSH
T179F25D02BA428863D3DF4230B5052F7AD7F868305946D655EB539ACB2C759D7EB3A303
MD5 SHA1 SHA512 SSDEEP TLSH

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