9e189ba35731a028b16eed1b3f344514ffcf2b334791f8342fa852b5559041da

General

Target

67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe
Size

38KB
MD5

67df7ccb79956877849c7d0d27893b11
SHA1

8150525706ee564ab7002229c2febf6c5d4d5c13
SHA256

9e189ba35731a028b16eed1b3f344514ffcf2b334791f8342fa852b5559041da
SHA512

45ee6cd662cde589751d7df9a12a682765ab139212f098e383ac146457356e61a3ecd4b6b441d4769a8623273e2fc359471257d86e727bcd281d3ada08e0fa7a
SSDEEP

768:8mBOe28ZLIcn6oHEAAPHSoZD87IcaIhiPAcRy3zBIv+8gDJNp4:8mECF6okAAvDlgIcaIxlD2+8gVn4

Score

10^/10

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
2140	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
2140	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/4424-0-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral2/memory/4424-3-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral2/memory/4424-13-0x0000000000400000-0x0000000000418000-memory.dmp	upx

Drops file in System32 directory 8 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\YUmidimap.dll	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\midimap.dll	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\sysapp10.dll	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\YUksuser.dll	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\YUksuser.dll	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\ksuser.dll	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe

Launches sc.exe 2 IoCs

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

pid	Process
3368	sc.exe
8	sc.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4424	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe
4424	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe
4424	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe
4424	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe
4424	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe
4424	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe
4424	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe
4424	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4424	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4424 wrote to memory of 5000	4424	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe	95
PID 4424 wrote to memory of 5000	4424	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe	95
PID 4424 wrote to memory of 5000	4424	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe	95
PID 4424 wrote to memory of 3368	4424	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe	96
PID 4424 wrote to memory of 3368	4424	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe	96
PID 4424 wrote to memory of 3368	4424	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe	96
PID 4424 wrote to memory of 8	4424	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe	97
PID 4424 wrote to memory of 8	4424	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe	97
PID 4424 wrote to memory of 8	4424	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe	97
PID 4424 wrote to memory of 2140	4424	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe	101
PID 4424 wrote to memory of 2140	4424	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe	101
PID 4424 wrote to memory of 2140	4424	67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe	101
PID 5000 wrote to memory of 4160	5000	net.exe	102
PID 5000 wrote to memory of 4160	5000	net.exe	102
PID 5000 wrote to memory of 4160	5000	net.exe	102

C:\Users\Admin\AppData\Local\Temp\67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\67df7ccb79956877849c7d0d27893b11_JaffaCakes118.exe"
1⤵
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4424
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5000
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    PID:4160
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  PID:3368
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  PID:8
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1721743629.dat, ServerMain c:\users\admin\appdata\local\temp\67df7ccb79956877849c7d0d27893b11_jaffacakes118.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  PID:2140

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

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:\Windows\SysWOW64\sysapp10.dll

Filesize
40KB

MD5
2e1ede89c6666da23e5ef4125bb6352c

SHA1
b4d5128a71ffea310e1251c088879e3ab972cf4d

SHA256
9dda30701716d56592ad01b4cd2d7dc4d6a947d6a9d4472560aa0547389359d4

SHA512
b2dd2ba92e0dd6887553faeb180cf897f9ebd637640099f2ebb0acd4792e11d07cb7dc26900afeb92d9af23b1c9dc717ec12135885e7207673b0a7a1b52186b3

Download Submit
memory/4424-0-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/4424-3-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/4424-13-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download

Analysis

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