a238c67db20f6e34397229ae793e1507dc26ef91a10fec10d40c462c23d1bedc

General

Target

f47d31a1e038980b0780e75360650b22_JaffaCakes118.dll
Size

113KB
MD5

f47d31a1e038980b0780e75360650b22
SHA1

1f157370ec5d5adbd8785237f77a7c95a93c7f64
SHA256

a238c67db20f6e34397229ae793e1507dc26ef91a10fec10d40c462c23d1bedc
SHA512

3f1463136faf8da380cccad836f4aeb96d9079ea14a557986e9938c49cda12e96e4233fe33f719e707f3939c290e999502c7b9adeef2d9774fe675a339ee021f
SSDEEP

3072:T//HX3MGpeU4IOG3fMT8W6b6U9x/6oXMB9lnX8wqB:TMGRT0Th6b686WMFe

Score

7^/10

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
1780	rundll32.exe

Installs/modifies Browser Helper Object 2 TTPs 4 IoCs

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

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{f5270a01-05c2-46cf-95ba-a68357966aff}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{f5270a01-05c2-46cf-95ba-a68357966aff}\ = "{ffa66975-386a-ab59-fc64-2c5010a0725f}"	rundll32.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\xuqigz.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\xuqigz.dll	rundll32.exe

Modifies registry class 23 IoCs

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\VersionIndependentProgID	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\VersionIndependentProgID	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\ProgID	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\ProgID	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\Implemented Categories\{59FB2056-D625-48D0-A944-1A85B5AB2640}	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\Implemented Categories	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\TypeLib	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\Implemented Categories	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\TypeLib	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\Programmable	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f5270a01-05c2-46cf-95ba-a68357966aff}\InprocServer32\ = "C:\\Windows\\SysWow64\\xuqigz.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f5270a01-05c2-46cf-95ba-a68357966aff}\InprocServer32\ThreadingModel = "free"	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\Programmable	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\InprocServer32	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\Version	rundll32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\Implemented Categories\{59FB2056-D625-48D0-A944-1A85B5AB2640}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f5270a01-05c2-46cf-95ba-a68357966aff}\InprocServer32	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f5270a01-05c2-46cf-95ba-a68357966aff}	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2428 wrote to memory of 3712	2428	rundll32.exe	90
PID 2428 wrote to memory of 3712	2428	rundll32.exe	90
PID 2428 wrote to memory of 3712	2428	rundll32.exe	90
PID 3712 wrote to memory of 1780	3712	rundll32.exe	91
PID 3712 wrote to memory of 1780	3712	rundll32.exe	91
PID 3712 wrote to memory of 1780	3712	rundll32.exe	91

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f47d31a1e038980b0780e75360650b22_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2428
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\f47d31a1e038980b0780e75360650b22_JaffaCakes118.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:3712
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe "C:\Windows\system32\xuqigz.dll",i
    3⤵
    - Loads dropped DLL
    - Installs/modifies Browser Helper Object
    - Modifies registry class
    PID:1780

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 --mojo-platform-channel-handle=2544 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
1⤵
PID:2108

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Browser Extensions

1

T1176

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\xuqigz.dll

Filesize
113KB

MD5
f47d31a1e038980b0780e75360650b22

SHA1
1f157370ec5d5adbd8785237f77a7c95a93c7f64

SHA256
a238c67db20f6e34397229ae793e1507dc26ef91a10fec10d40c462c23d1bedc

SHA512
3f1463136faf8da380cccad836f4aeb96d9079ea14a557986e9938c49cda12e96e4233fe33f719e707f3939c290e999502c7b9adeef2d9774fe675a339ee021f

Download Submit
memory/1780-5-0x0000000010000000-0x0000000010035000-memory.dmp

Filesize
212KB

Download
memory/1780-6-0x00000000012B0000-0x00000000012B5000-memory.dmp

Filesize
20KB

Download
memory/1780-8-0x00000000012B0000-0x00000000012B5000-memory.dmp

Filesize
20KB

Download
memory/3712-0-0x0000000010000000-0x0000000010035000-memory.dmp

Filesize
212KB

Download
memory/3712-1-0x00000000007E0000-0x00000000007E5000-memory.dmp

Filesize
20KB

Download
memory/3712-7-0x00000000007E0000-0x00000000007E5000-memory.dmp

Filesize
20KB

Download

Analysis

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