b834a5291698cf9087eeaf66b39610633410b38315f4c10b4bed5b6057e88369

Analysis

max time kernel
140s
max time network
164s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
20-10-2022 19:40

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General

Target

b834a5291698cf9087eeaf66b39610633410b38315f4c10b4bed5b6057e88369.exe
Size

17KB
MD5

96ac039672d6c25a51764fe143fee983
SHA1

1cf9ff867e7f14a570b242c8c6fd9657bd61a7fc
SHA256

b834a5291698cf9087eeaf66b39610633410b38315f4c10b4bed5b6057e88369
SHA512

e4584a38c9c3121e8df7ecb09903ab3baf8b32ba3713b5db7a81c05e25a4d480b10be32ed21ec3d57b4894c0178fb5d7e8441f5aade0d8e1ca1ed6e6c4b26f0d
SSDEEP

192:dP1oyn7qldKYKfsxApWNNSQXx2suKk1T2yTOIw4U4fHCjG3HUwMtznS6xNwqdzH5:J1opKfWSQho2EOSr82H6tbNfwqZRD

Score

7^/10

adware stealer

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	b834a5291698cf9087eeaf66b39610633410b38315f4c10b4bed5b6057e88369.exe

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	b834a5291698cf9087eeaf66b39610633410b38315f4c10b4bed5b6057e88369.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{7A4BE70D-4920-4898-8A37-FD37174AE744}	b834a5291698cf9087eeaf66b39610633410b38315f4c10b4bed5b6057e88369.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\FoxitExt.dll	b834a5291698cf9087eeaf66b39610633410b38315f4c10b4bed5b6057e88369.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7A4BE70D-4920-4898-8A37-FD37174AE744}	b834a5291698cf9087eeaf66b39610633410b38315f4c10b4bed5b6057e88369.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7A4BE70D-4920-4898-8A37-FD37174AE744}\ = "Firefox mod"	b834a5291698cf9087eeaf66b39610633410b38315f4c10b4bed5b6057e88369.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7A4BE70D-4920-4898-8A37-FD37174AE744}\InprocServer32\ThreadingModel = "Apartment"	b834a5291698cf9087eeaf66b39610633410b38315f4c10b4bed5b6057e88369.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7A4BE70D-4920-4898-8A37-FD37174AE744}\TypeLib	b834a5291698cf9087eeaf66b39610633410b38315f4c10b4bed5b6057e88369.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7A4BE70D-4920-4898-8A37-FD37174AE744}\InprocServer32	b834a5291698cf9087eeaf66b39610633410b38315f4c10b4bed5b6057e88369.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7A4BE70D-4920-4898-8A37-FD37174AE744}\InprocServer32\ = "FoxitExt.dll"	b834a5291698cf9087eeaf66b39610633410b38315f4c10b4bed5b6057e88369.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7A4BE70D-4920-4898-8A37-FD37174AE744}\ProgID	b834a5291698cf9087eeaf66b39610633410b38315f4c10b4bed5b6057e88369.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7A4BE70D-4920-4898-8A37-FD37174AE744}\ProgID\ = "firemod"	b834a5291698cf9087eeaf66b39610633410b38315f4c10b4bed5b6057e88369.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7A4BE70D-4920-4898-8A37-FD37174AE744}\TypeLib\ = "{8450C9B5-68BB-49DF-B1E7-018187674DD4}"	b834a5291698cf9087eeaf66b39610633410b38315f4c10b4bed5b6057e88369.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3368 wrote to memory of 4508	3368	b834a5291698cf9087eeaf66b39610633410b38315f4c10b4bed5b6057e88369.exe	81
PID 3368 wrote to memory of 4508	3368	b834a5291698cf9087eeaf66b39610633410b38315f4c10b4bed5b6057e88369.exe	81
PID 3368 wrote to memory of 4508	3368	b834a5291698cf9087eeaf66b39610633410b38315f4c10b4bed5b6057e88369.exe	81

C:\Users\Admin\AppData\Local\Temp\b834a5291698cf9087eeaf66b39610633410b38315f4c10b4bed5b6057e88369.exe
"C:\Users\Admin\AppData\Local\Temp\b834a5291698cf9087eeaf66b39610633410b38315f4c10b4bed5b6057e88369.exe"
1⤵
- Checks computer location settings
- Installs/modifies Browser Helper Object
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3368
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\B834A5~1.EXE >> NUL
  2⤵
  PID:4508

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Browser Extensions

T1176

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4508-132-0x0000000000000000-mapping.dmp

Download