590ec3b9ab16d89dc95eb96b49bcb7c1468c3dad7fa9232f3c5f54fb416ee678

Analysis

max time kernel
125s
max time network
127s
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, 18:44

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General

Target

1c19b4cd730cc67a4c4b347e65ea3e16_JaffaCakes118.dll
Size

640KB
MD5

1c19b4cd730cc67a4c4b347e65ea3e16
SHA1

38b26bf5934403d05e5893c63e09807adce9e411
SHA256

590ec3b9ab16d89dc95eb96b49bcb7c1468c3dad7fa9232f3c5f54fb416ee678
SHA512

3b99cf9d0e92e77a81bfc281b7740ea6ff7f69e30cf4c75f3db84469f59f81de8f7c43725bed618f49ff87c39fbab6522f5e8674469d5dcfe895970d1c2f3888
SSDEEP

12288:u0Et9YDc5DMWfT44XUDxoyiD02sHL1DYdh+y2tePm:etWDc/EXouPL1DYh+yA+

Score

6^/10

adware stealer

Malware Config

Signatures

Installs/modifies Browser Helper Object 2 TTPs 1 IoCs

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

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{CC01FC6C-AC86-6243-E28B-5AA41A2C3558}	regsvr32.exe

Modifies registry class 11 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-AC86-6243-E28B-5AA41A2C3558}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\1c19b4cd730cc67a4c4b347e65ea3e16_JaffaCakes118.brm inc\ = "brm inc"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\1c19b4cd730cc67a4c4b347e65ea3e16_JaffaCakes118.brm inc\Clsid	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-AC86-6243-E28B-5AA41A2C3558}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-AC86-6243-E28B-5AA41A2C3558}\ProgID\ = "1c19b4cd730cc67a4c4b347e65ea3e16_JaffaCakes118.brm inc"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-AC86-6243-E28B-5AA41A2C3558}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-AC86-6243-E28B-5AA41A2C3558}\ = "brm inc"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-AC86-6243-E28B-5AA41A2C3558}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1c19b4cd730cc67a4c4b347e65ea3e16_JaffaCakes118.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-AC86-6243-E28B-5AA41A2C3558}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\1c19b4cd730cc67a4c4b347e65ea3e16_JaffaCakes118.brm inc	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\1c19b4cd730cc67a4c4b347e65ea3e16_JaffaCakes118.brm inc\Clsid\ = "{CC01FC6C-AC86-6243-E28B-5AA41A2C3558}"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1432 wrote to memory of 1416	1432	regsvr32.exe	88
PID 1432 wrote to memory of 1416	1432	regsvr32.exe	88
PID 1432 wrote to memory of 1416	1432	regsvr32.exe	88

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\1c19b4cd730cc67a4c4b347e65ea3e16_JaffaCakes118.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1432
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\1c19b4cd730cc67a4c4b347e65ea3e16_JaffaCakes118.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:1416

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4080,i,1999448010053300448,1112699187621658374,262144 --variations-seed-version --mojo-platform-channel-handle=3976 /prefetch:8
1⤵
PID:3584

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

Windows 7 deprecation

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