470edf1ae3f53c3fe72c5e8c12ce896596a4ade9db83961d4d242fd00eef33b1

Analysis

max time kernel
140s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
27-07-2024 09:49

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General

Target

77bc3beca617a3269226a47c2c084bb6_JaffaCakes118.exe
Size

188KB
MD5

77bc3beca617a3269226a47c2c084bb6
SHA1

d9222276597a188d0613f9a4eb7aee416da5487c
SHA256

470edf1ae3f53c3fe72c5e8c12ce896596a4ade9db83961d4d242fd00eef33b1
SHA512

8e567bb5651e5b2e7be1d49822f1e3030ce9d93ef4730f986c469f3b5861d0cf943a5400dde00b347f159e460f03478a1fe13e885f0250a45cbe215bc2db539c
SSDEEP

3072:A1gObv+5KmvMYURXYUGbMLwEp7M/3jqnaku0/3WEkkbr3oepDwqUDy5j:A1jawGUHXZMPjqabO3FbrYoDVGy

Score

6^/10

adware discovery stealer

Malware Config

Signatures

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
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\	77bc3beca617a3269226a47c2c084bb6_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\	77bc3beca617a3269226a47c2c084bb6_JaffaCakes118.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\jnua483.dll	77bc3beca617a3269226a47c2c084bb6_JaffaCakes118.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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	77bc3beca617a3269226a47c2c084bb6_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ZimboNews.clsZimboNews\Clsid	77bc3beca617a3269226a47c2c084bb6_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ZimboNews.clsZimboNews	77bc3beca617a3269226a47c2c084bb6_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2332	77bc3beca617a3269226a47c2c084bb6_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2332 wrote to memory of 452	2332	77bc3beca617a3269226a47c2c084bb6_JaffaCakes118.exe	84
PID 2332 wrote to memory of 452	2332	77bc3beca617a3269226a47c2c084bb6_JaffaCakes118.exe	84
PID 2332 wrote to memory of 452	2332	77bc3beca617a3269226a47c2c084bb6_JaffaCakes118.exe	84
PID 452 wrote to memory of 4132	452	cmd.exe	86
PID 452 wrote to memory of 4132	452	cmd.exe	86
PID 452 wrote to memory of 4132	452	cmd.exe	86
PID 2332 wrote to memory of 4608	2332	77bc3beca617a3269226a47c2c084bb6_JaffaCakes118.exe	94
PID 2332 wrote to memory of 4608	2332	77bc3beca617a3269226a47c2c084bb6_JaffaCakes118.exe	94
PID 2332 wrote to memory of 4608	2332	77bc3beca617a3269226a47c2c084bb6_JaffaCakes118.exe	94

C:\Users\Admin\AppData\Local\Temp\77bc3beca617a3269226a47c2c084bb6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\77bc3beca617a3269226a47c2c084bb6_JaffaCakes118.exe"
1⤵
- Installs/modifies Browser Helper Object
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2332
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\System32\cmd.exe /k %windir%\System32\reg.exe ADDHKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System/v EnableLUA /t REG_DWORD /d 0 /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:452
- - C:\Windows\SysWOW64\reg.exe
    C:\Windows\System32\reg.exe ADDHKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System/v EnableLUA /t REG_DWORD /d 0 /f
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4132
- C:\Windows\SysWOW64\regsvr32.exe
  regsvr32.exe /s C:\Windows\jnua483.dll
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4608

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\jnua483.dll

Filesize
5KB

MD5
aaa0c0480a85174341d5210b544bd231

SHA1
6321856034f31a06e67d60b384af0856b05c221c

SHA256
6ef10e631cef3e8407c8b5e7a720cdc9484dc6920521a7bffa058169693b626f

SHA512
81a9d4f832ab0e7c2f83c296c57bd3bfbc53d1eb0a43b5276623604cf21fa897faaecb16ccba5a3ded3331ea5c3b732f89b7c42629034c7b423ad758871f60ee

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