89bb411a9f29ffa858c2eeea1c62394fb0779166e72ac46654260fa9dc6fc41a

Analysis

max time kernel
92s
max time network
97s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
01/07/2024, 11:28

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General

Target

1b1ef0b9efe97081aee01e05745b9a1e_JaffaCakes118.dll
Size

663KB
MD5

1b1ef0b9efe97081aee01e05745b9a1e
SHA1

e218f4563c24e74bdcac0048fa50e12314bc4663
SHA256

89bb411a9f29ffa858c2eeea1c62394fb0779166e72ac46654260fa9dc6fc41a
SHA512

ae5fe02c771ac0d48e113e3a6b7cf56a77e6fc22de3f9e817b8c70f078d0b9ba2237a13023613e97b786c6eb20d3bf22ecd9ab39cda5e9821153fcf500f9568f
SSDEEP

12288:dYaeQZFg9Y4/xeythsZo3nEpCkMRoSDtz:9dkd5eZCEpCk8

Score

7^/10

adware stealer upx

Malware Config

Signatures

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4684-1-0x0000000001F90000-0x0000000002038000-memory.dmp	upx
behavioral2/memory/4684-0-0x0000000001F90000-0x0000000002038000-memory.dmp	upx

Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{960571B5-9178-4F29-B366-0585C526BAB0}\	regsvr32.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{960571B5-9178-4F29-B366-0585C526BAB0}	regsvr32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\romanime.log	regsvr32.exe

Modifies registry class 11 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{960571B5-9178-4F29-B366-0585C526BAB0}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\1b1ef0b9efe97081aee01e05745b9a1e_JaffaCakes118.TobjXQDBHO\Clsid	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{960571B5-9178-4F29-B366-0585C526BAB0}\ProgID\ = "1b1ef0b9efe97081aee01e05745b9a1e_JaffaCakes118.TobjXQDBHO"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{960571B5-9178-4F29-B366-0585C526BAB0}\ = "TN²å¼þ"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{960571B5-9178-4F29-B366-0585C526BAB0}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{960571B5-9178-4F29-B366-0585C526BAB0}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1b1ef0b9efe97081aee01e05745b9a1e_JaffaCakes118.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{960571B5-9178-4F29-B366-0585C526BAB0}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\1b1ef0b9efe97081aee01e05745b9a1e_JaffaCakes118.TobjXQDBHO	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\1b1ef0b9efe97081aee01e05745b9a1e_JaffaCakes118.TobjXQDBHO\ = "TN²å¼þ"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\1b1ef0b9efe97081aee01e05745b9a1e_JaffaCakes118.TobjXQDBHO\Clsid\ = "{960571B5-9178-4F29-B366-0585C526BAB0}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{960571B5-9178-4F29-B366-0585C526BAB0}\ProgID	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3184 wrote to memory of 4684	3184	regsvr32.exe	81
PID 3184 wrote to memory of 4684	3184	regsvr32.exe	81
PID 3184 wrote to memory of 4684	3184	regsvr32.exe	81

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\1b1ef0b9efe97081aee01e05745b9a1e_JaffaCakes118.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:3184
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\1b1ef0b9efe97081aee01e05745b9a1e_JaffaCakes118.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Drops file in System32 directory
  - Modifies registry class
  PID:4684

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Browser Extensions

T1176

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4684-1-0x0000000001F90000-0x0000000002038000-memory.dmp

Filesize
672KB

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memory/4684-0-0x0000000001F90000-0x0000000002038000-memory.dmp

Filesize
672KB

Download