5a2421a99391c5deb961e8f6dbbb5a660531192c2fa279061d6d637bb9656947

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11-10-2024 05:43

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General

Target

$TEMP/sys.exe
Size

1.9MB
MD5

361afb77460382b303ff0feab78b65c7
SHA1

e3b44a60f2bb4998399252cc36d3e65dc80deef1
SHA256

2063d5933ad5f7789082e04d6209032c4f85ef495f06b9de3f41546f0fde6de8
SHA512

b81233d5d15884158ec99a64ecfd9239906d67bf149282f87e458718a9eb8ae71b8c00cbe5e6d289b48ab5ac0ff7d1f061bb1caff67d93dfcf9c1a387726615b
SSDEEP

49152:4alHayFPW9MgP6WaxFn6HIIGpTIqiqvspY9c:jFPW6gPxaFn6HIIsBPvspd

Score

7^/10

adware discovery spyware stealer

Malware Config

Signatures

Loads dropped DLL 8 IoCs

pid	Process
1388	sys.exe
1388	sys.exe
1388	sys.exe
1388	sys.exe
1388	sys.exe
1388	sys.exe
1388	sys.exe
1388	sys.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

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\{b41a655c-2e74-6de1-bf81-3d1c9f946c90}	sys.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{b41a655c-2e74-6de1-bf81-3d1c9f946c90}\NoExplorer = "0"	sys.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\f4768ebf.exe	sys.exe
File created	C:\Windows\SysWOW64\89f72d32.dll	sys.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 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	sys.exe

Modifies Internet Explorer Protected Mode 1 TTPs 1 IoCs

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2500 = "3"	sys.exe

Modifies Internet Explorer Protected Mode Banner 1 TTPs 1 IoCs

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\NOPROTECTEDMODEBANNER = "1"	sys.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Main	sys.exe

Modifies registry class 7 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{b41a655c-2e74-6de1-bf81-3d1c9f946c90}	sys.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{b41a655c-2e74-6de1-bf81-3d1c9f946c90}\ = "yourprofitclub"	sys.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{b41a655c-2e74-6de1-bf81-3d1c9f946c90}\InProcServer32	sys.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{b41a655c-2e74-6de1-bf81-3d1c9f946c90}\InProcServer32\ = "C:\\Windows\\SysWow64\\89f72d32.dll"	sys.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{b41a655c-2e74-6de1-bf81-3d1c9f946c90}\InProcServer32\ThreadingModel = "Apartment"	sys.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\\{b33ee05e-0e9f-5672-5ac7-4fedac3dbf5c}	sys.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{b33ee05e-0e9f-5672-5ac7-4fedac3dbf5c}\3140288821 = "ÁÄ¶£ôíÇôïÂú½ªÅ¶ñ“"	sys.exe

C:\Users\Admin\AppData\Local\Temp\$TEMP\sys.exe
"C:\Users\Admin\AppData\Local\Temp\$TEMP\sys.exe"
1⤵
- Loads dropped DLL
- Installs/modifies Browser Helper Object
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer Protected Mode
- Modifies Internet Explorer Protected Mode Banner
- Modifies Internet Explorer settings
- Modifies registry class
PID:1388

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nssF231.tmp\Math.dll

Filesize
66KB

MD5
b140459077c7c39be4bef249c2f84535

SHA1
c56498241c2ddafb01961596da16d08d1b11cd35

SHA256
0598f7d83db44929b7170c1285457b52b4281185f63ced102e709bf065f10d67

SHA512
fbcb19a951d96a216d73b6b3e005338bbb6e11332c6cc8c3f179ccd420b4db0e5682dc4245bd120dcb67bc70960eab368e74c68c7c165a485a12a7d0d8a00328

Download Submit
C:\Users\Admin\AppData\Local\Temp\nssF231.tmp\System.dll

Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nssF231.tmp\UAC.dll

Filesize
17KB

MD5
88ad3fd90fc52ac3ee0441a38400a384

SHA1
08bc9e1f5951b54126b5c3c769e3eaed42f3d10b

SHA256
e58884695378cf02715373928bb8ade270baf03144369463f505c3b3808cbc42

SHA512
359496f571e6fa2ec4c5ab5bd1d35d1330586f624228713ae55c65a69e07d8623022ef54337c22c3aab558a9b74d9977c8436f5fea4194899d9ef3ffd74e7dbb

Download Submit
C:\Windows\SysWOW64\89f72d32.dll

Filesize
2.5MB

MD5
81dd5db35b7311d7e86ad64bb21946c0

SHA1
936997fb386f9d482715dd5747cace7ce94fcdea

SHA256
0b87c091f55d456fcf375cfd93cdd4fac981537c53fe06bba20db4d37f624aa2

SHA512
014f93810a96d99b7b3710366acdd8c869c152940bcfd4b6764ec12a69dd36d874bcac544f62279dd35054cd21c99cdc90dd00c74153be23f5e39100f19958d7

Download Submit
memory/1388-19-0x00000000023F0000-0x000000000240A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads