4a75c23e7f2c2ffcb488436e95fe2a99941e47b6f95c1628e13fa735fd00bbe5

Analysis

max time kernel
144s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
16-07-2024 03:11

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General

Target

4c90a4308f902e87cd423ce06fc917c2_JaffaCakes118.exe
Size

137KB
MD5

4c90a4308f902e87cd423ce06fc917c2
SHA1

e9ce764240ae0acf166e26917c40dd1bf0704983
SHA256

4a75c23e7f2c2ffcb488436e95fe2a99941e47b6f95c1628e13fa735fd00bbe5
SHA512

e5f5ea036f313d8fdb242a5151218a4db6bb0ecfdb15e6c243058ee97c665348fce955a02a01bb8aba4837852b8dd56fc3d03ddc18e0e12e9358cedf087ed839
SSDEEP

3072:utrUTOOAwmgu0mMBCWajxnE1bASCBLoz+qcfhUmoPT/:utrkhAn0msCjGASAqR

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1220	Crecaa.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4492-0-0x0000000000400000-0x000000000043B000-memory.dmp	upx
behavioral2/files/0x0009000000023449-11.dat	upx
behavioral2/memory/1220-14-0x0000000000400000-0x000000000043B000-memory.dmp	upx

Drops file in Windows directory 6 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\{62C40AA6-4406-467a-A5A5-DFDF1B559B7A}.job	4c90a4308f902e87cd423ce06fc917c2_JaffaCakes118.exe
File opened for modification	C:\Windows\Tasks\{62C40AA6-4406-467a-A5A5-DFDF1B559B7A}.job	4c90a4308f902e87cd423ce06fc917c2_JaffaCakes118.exe
File created	C:\Windows\Crecaa.exe	4c90a4308f902e87cd423ce06fc917c2_JaffaCakes118.exe
File opened for modification	C:\Windows\Crecaa.exe	4c90a4308f902e87cd423ce06fc917c2_JaffaCakes118.exe
File created	C:\Windows\Tasks\{62C40AA6-4406-467a-A5A5-DFDF1B559B7A}.job	Crecaa.exe
File opened for modification	C:\Windows\Tasks\{62C40AA6-4406-467a-A5A5-DFDF1B559B7A}.job	Crecaa.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
119720	1220	WerFault.exe	86

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1403246978-718555486-3105247137-1000\Software\Microsoft\Internet Explorer\Main	Crecaa.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe
1220	Crecaa.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4492 wrote to memory of 1220	4492	4c90a4308f902e87cd423ce06fc917c2_JaffaCakes118.exe	86
PID 4492 wrote to memory of 1220	4492	4c90a4308f902e87cd423ce06fc917c2_JaffaCakes118.exe	86
PID 4492 wrote to memory of 1220	4492	4c90a4308f902e87cd423ce06fc917c2_JaffaCakes118.exe	86

C:\Users\Admin\AppData\Local\Temp\4c90a4308f902e87cd423ce06fc917c2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4c90a4308f902e87cd423ce06fc917c2_JaffaCakes118.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4492
- C:\Windows\Crecaa.exe
  C:\Windows\Crecaa.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  PID:1220
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1220 -s 536
    3⤵
    - Program crash
    PID:119720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1220 -ip 1220
1⤵
PID:119696

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\Crecaa.exe

Filesize
137KB

MD5
4c90a4308f902e87cd423ce06fc917c2

SHA1
e9ce764240ae0acf166e26917c40dd1bf0704983

SHA256
4a75c23e7f2c2ffcb488436e95fe2a99941e47b6f95c1628e13fa735fd00bbe5

SHA512
e5f5ea036f313d8fdb242a5151218a4db6bb0ecfdb15e6c243058ee97c665348fce955a02a01bb8aba4837852b8dd56fc3d03ddc18e0e12e9358cedf087ed839

Download Submit
C:\Windows\Tasks\{62C40AA6-4406-467a-A5A5-DFDF1B559B7A}.job

Filesize
390B

MD5
4e8551d4e91c27791fea8ed8f11c2893

SHA1
fc78b36e1f398b52bacdf85d7b5b4f7c1753cd03

SHA256
95118e122535a08ea197631ed13e820985e9250ba2a014cb6684a5f8f982d4bb

SHA512
c5dccac87878184e4c43227b6a829256741f09ff113782fd85ff67ce854410a3785a7e45d61ecccede429236e6d2c33ed61a6fc192c6015988fccca4d51502d4

Download Submit
memory/1220-22-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1220-14-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1220-18-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1220-125786-0x0000000002170000-0x00000000022CE000-memory.dmp

Filesize
1.4MB

Download
memory/1220-125793-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/4492-3-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/4492-6-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/4492-2-0x00000000006B0000-0x00000000006B1000-memory.dmp

Filesize
4KB

Download
memory/4492-1-0x0000000000401000-0x0000000000402000-memory.dmp

Filesize
4KB

Download
memory/4492-0-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/4492-125784-0x00000000020B0000-0x000000000220E000-memory.dmp

Filesize
1.4MB

Download