6786918f92755f5727df2ed54271c7a8818e90507afcc7fbb202c7bce3aba5ef

General

Target

f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe
Size

34KB
MD5

f50ed01eed596c7f070fe4b0ea34ed10
SHA1

cd0600f92e85e3b7cc45a997b34bd7b6c1a9d8fd
SHA256

6786918f92755f5727df2ed54271c7a8818e90507afcc7fbb202c7bce3aba5ef
SHA512

5c64af54350dfcdd57a0befff7bd8220ab561c40f4cce55a410ac4b286b40062dc785040f090b4ef758241442e02ac019a3dc65239f6aee68560147aaf3e0d26
SSDEEP

768:/7gSo5qu9QB2SRNKgegtWGZNQ+BmlFKR6bcvQ+9OM:/to/Q9Zo57yJY+9O

Score

10^/10

discovery evasion execution upx

Malware Config

Signatures

Disables service(s) 3 TTPs
evasion execution

Windows Service
T1543.003

Service Stop
T1489

Service Execution
T1569.002
Stops running service(s) 4 TTPs
evasion execution

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Service Execution
T1569.002

Deletes itself 1 IoCs

pid	Process
2424	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
2424	rundll32.exe

Drops file in System32 directory 11 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\sysapp1.dll	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\yuksuser.dll	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\yumidimap.dll	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\yumsimg32.dll	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\msimg32.dll	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\msimg32.dll	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\yuksuser.dll	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\ksuser.dll	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\midimap.dll	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/372-0-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral1/memory/372-12-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Launches sc.exe 2 IoCs

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

pid	Process
1820	sc.exe
2916	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	net.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.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

Runs net.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe
372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe
372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 372 wrote to memory of 2460	372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe	30
PID 372 wrote to memory of 2460	372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe	30
PID 372 wrote to memory of 2460	372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe	30
PID 372 wrote to memory of 2460	372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe	30
PID 372 wrote to memory of 1820	372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe	31
PID 372 wrote to memory of 1820	372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe	31
PID 372 wrote to memory of 1820	372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe	31
PID 372 wrote to memory of 1820	372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe	31
PID 372 wrote to memory of 2916	372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe	33
PID 372 wrote to memory of 2916	372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe	33
PID 372 wrote to memory of 2916	372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe	33
PID 372 wrote to memory of 2916	372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe	33
PID 372 wrote to memory of 2424	372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe	34
PID 372 wrote to memory of 2424	372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe	34
PID 372 wrote to memory of 2424	372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe	34
PID 372 wrote to memory of 2424	372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe	34
PID 372 wrote to memory of 2424	372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe	34
PID 372 wrote to memory of 2424	372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe	34
PID 372 wrote to memory of 2424	372	f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe	34
PID 2460 wrote to memory of 2200	2460	net.exe	37
PID 2460 wrote to memory of 2200	2460	net.exe	37
PID 2460 wrote to memory of 2200	2460	net.exe	37
PID 2460 wrote to memory of 2200	2460	net.exe	37

C:\Users\Admin\AppData\Local\Temp\f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f50ed01eed596c7f070fe4b0ea34ed10_JaffaCakes118.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:372
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2460
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2200
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1820
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2916
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1727234378.dat, ServerMain c:\users\admin\appdata\local\temp\f50ed01eed596c7f070fe4b0ea34ed10_jaffacakes118.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2424

Network

MITRE ATT&CK Enterprise v15

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

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\1727234378.dat

Filesize
35KB

MD5
a5051734191f45cca2fe3cf8c31f7b57

SHA1
30915dee44cdfaf5204b5b9d024ccf6270a16fb5

SHA256
388580375b9fec2b92bc458cec3c4d7f09b007f751a3f18af1b2fb1de3868aa6

SHA512
a6402fd25b5ae4980b175b8e305afecbee1b175678fa0e37f9310b20228b100ace56ca6d282fd93ae7b39958ab29577a3153a6e1e421a71075d3759060c088e3

Download Submit
memory/372-0-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/372-12-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

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