fb9e34230f77529ed70cbbb9ef92d2d65ba379e7c795f41cf92b8650f4380338

General

Target

dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe
Size

38KB
MD5

dc5b50523a957f642b96eed93363f6b5
SHA1

471ba19dec8d33057a73bbd04d0bf962b68f3fd6
SHA256

fb9e34230f77529ed70cbbb9ef92d2d65ba379e7c795f41cf92b8650f4380338
SHA512

4b6e129cf659fbc933394afa0301c7d6d6c8110d1ce48776e13ba88dcf5fc983ab0c6f14ece0a16d1892f9373614f78c6838cef4add74f806b51dcb5ca5d98b9
SSDEEP

768:bOvHPRamDrCFnAcBDu4RMEGx8JPj2cBPkbtgxV6tm2/:bOncmDMnAcBDuk2x85j5mbtC6w2/

Score

10^/10

discovery evasion execution spyware stealer 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
4068	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
4068	rundll32.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3292-0-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral2/memory/3292-13-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral2/memory/3292-16-0x0000000000400000-0x0000000000418000-memory.dmp	upx

Drops file in System32 directory 11 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\yumsimg32.dll	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\msimg32.dll	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\yuksuser.dll	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\yuksuser.dll	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\ksuser.dll	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\yumidimap.dll	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\midimap.dll	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\msimg32.dll	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\sysapp10.dll	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe

Launches sc.exe 2 IoCs

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

pid	Process
3740	sc.exe
4596	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	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.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

Runs net.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3292	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe
3292	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe
3292	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe
3292	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe
3292	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe
3292	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe
3292	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe
3292	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3292	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3292 wrote to memory of 4748	3292	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe	83
PID 3292 wrote to memory of 4748	3292	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe	83
PID 3292 wrote to memory of 4748	3292	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe	83
PID 3292 wrote to memory of 3740	3292	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe	84
PID 3292 wrote to memory of 3740	3292	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe	84
PID 3292 wrote to memory of 3740	3292	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe	84
PID 3292 wrote to memory of 4596	3292	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe	85
PID 3292 wrote to memory of 4596	3292	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe	85
PID 3292 wrote to memory of 4596	3292	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe	85
PID 4748 wrote to memory of 1772	4748	net.exe	89
PID 4748 wrote to memory of 1772	4748	net.exe	89
PID 4748 wrote to memory of 1772	4748	net.exe	89
PID 3292 wrote to memory of 4068	3292	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe	93
PID 3292 wrote to memory of 4068	3292	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe	93
PID 3292 wrote to memory of 4068	3292	dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe	93

C:\Users\Admin\AppData\Local\Temp\dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\dc5b50523a957f642b96eed93363f6b5_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:3292
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4748
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1772
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3740
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4596
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1726147924.dat, ServerMain c:\users\admin\appdata\local\temp\dc5b50523a957f642b96eed93363f6b5_jaffacakes118.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:4068

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

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Service Stop

2

T1489

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\1726147924.dat

Filesize
42KB

MD5
721923cb55d79d01a03ef400392a9d6f

SHA1
c3b454543c6b9a6f89aa726f826a9a48c81f67c0

SHA256
b7d2296002a41417ca177fbc1881c56ee82bf5f05c4c2703c8e2f50f1900e0cb

SHA512
efbbab568980bb666fde43a287b30fb251c09df8874b60ef9e47dc19c0736e2fc3700b2c92cb78ba4c68b35728e6137a3b8f3fecf4f1f163a83fe0709d0bd059

Download Submit
memory/3292-0-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/3292-13-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/3292-16-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download

Analysis

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