81dc31d10a7769f5a5bcecb7446d3af10cf5790c95e1caffebf316af420abbc3

Analysis

max time kernel
307s
max time network
373s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
06/12/2022, 01:36

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General

Target

81dc31d10a7769f5a5bcecb7446d3af10cf5790c95e1caffebf316af420abbc3.exe
Size

104KB
MD5

48333dab65b6f51ce866a96c830ac5ea
SHA1

1d9423673c01e5275c42eef02c2e91c518cbbf2e
SHA256

81dc31d10a7769f5a5bcecb7446d3af10cf5790c95e1caffebf316af420abbc3
SHA512

adaff85a09bdde97e9164219026f16ecff901032ed9a6652618a92a50a7dd17d65868b847beb938aafe45b94afc533cd3ffa1d8bc90b48101bf529b0f8b5740e
SSDEEP

1536:XSkMAudaBamRaDFRDTvC7s/h+obRZEEZU7rXR:ulWViFRDzC7s/wmEEZU7rXR

Score

9^/10

adware stealer upx

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 2 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000200000001ff2d-134.dat	acprotect
behavioral2/files/0x000200000001ff2d-135.dat	acprotect

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x000200000001ff2d-134.dat	upx
behavioral2/files/0x000200000001ff2d-135.dat	upx

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-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	81dc31d10a7769f5a5bcecb7446d3af10cf5790c95e1caffebf316af420abbc3.exe

Loads dropped DLL 1 IoCs

pid	Process
2840	regsvr32.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 created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{2FF811E6-8925-4084-A649-C159955E67E8}	81dc31d10a7769f5a5bcecb7446d3af10cf5790c95e1caffebf316af420abbc3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{2FF811E6-8925-4084-A649-C159955E67E8}\	81dc31d10a7769f5a5bcecb7446d3af10cf5790c95e1caffebf316af420abbc3.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{2FF811E6-8925-4084-A649-C159955E67E8}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{2FF811E6-8925-4084-A649-C159955E67E8}	regsvr32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\nada32.dll	81dc31d10a7769f5a5bcecb7446d3af10cf5790c95e1caffebf316af420abbc3.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 60 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BhoNew.BhoApp.1\ = "BHO"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4937D5D1-2039-409A-BD83-FEC9B39B2356}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CAF9D798-C659-4B9B-8E19-EE27C3D04EE7}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BhoNew.BhoApp\ = "BHO"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{CAF9D798-C659-4B9B-8E19-EE27C3D04EE7}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{CAF9D798-C659-4B9B-8E19-EE27C3D04EE7}\TypeLib\ = "{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BhoNew.BhoApp	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2FF811E6-8925-4084-A649-C159955E67E8}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4937D5D1-2039-409A-BD83-FEC9B39B2356}\ProxyStubClsid32\ = "{00020420-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4937D5D1-2039-409A-BD83-FEC9B39B2356}\TypeLib\ = "{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4937D5D1-2039-409A-BD83-FEC9B39B2356}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BhoNew.BhoApp\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}\1.0\ = "Type Library"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}\1.0\0\win32\ = "C:\\Windows\\SysWow64\\nada32.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4937D5D1-2039-409A-BD83-FEC9B39B2356}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2FF811E6-8925-4084-A649-C159955E67E8}\ProgID\ = "BhoNew.BhoApp.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CAF9D798-C659-4B9B-8E19-EE27C3D04EE7}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4937D5D1-2039-409A-BD83-FEC9B39B2356}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4937D5D1-2039-409A-BD83-FEC9B39B2356}\ = "_IBhoAppEvents"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CAF9D798-C659-4B9B-8E19-EE27C3D04EE7}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BhoNew.BhoApp\CurVer\ = "BhoNew.BhoApp.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2FF811E6-8925-4084-A649-C159955E67E8}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2FF811E6-8925-4084-A649-C159955E67E8}\TypeLib\ = "{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}\1.0\HELPDIR\ = "C:\\Windows\\SysWow64\\"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4937D5D1-2039-409A-BD83-FEC9B39B2356}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CAF9D798-C659-4B9B-8E19-EE27C3D04EE7}\ = "IBhoApp"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CAF9D798-C659-4B9B-8E19-EE27C3D04EE7}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BhoNew.BhoApp.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BhoNew.BhoApp.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4937D5D1-2039-409A-BD83-FEC9B39B2356}\TypeLib\ = "{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CAF9D798-C659-4B9B-8E19-EE27C3D04EE7}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2FF811E6-8925-4084-A649-C159955E67E8}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2FF811E6-8925-4084-A649-C159955E67E8}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4937D5D1-2039-409A-BD83-FEC9B39B2356}\ = "_IBhoAppEvents"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4937D5D1-2039-409A-BD83-FEC9B39B2356}\ProxyStubClsid32\ = "{00020420-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BhoNew.BhoApp\CLSID\ = "{2FF811E6-8925-4084-A649-C159955E67E8}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{CAF9D798-C659-4B9B-8E19-EE27C3D04EE7}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{CAF9D798-C659-4B9B-8E19-EE27C3D04EE7}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4937D5D1-2039-409A-BD83-FEC9B39B2356}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{CAF9D798-C659-4B9B-8E19-EE27C3D04EE7}\ = "IBhoApp"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{CAF9D798-C659-4B9B-8E19-EE27C3D04EE7}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2FF811E6-8925-4084-A649-C159955E67E8}\InprocServer32\ = "C:\\Windows\\SysWow64\\nada32.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2FF811E6-8925-4084-A649-C159955E67E8}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4937D5D1-2039-409A-BD83-FEC9B39B2356}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{CAF9D798-C659-4B9B-8E19-EE27C3D04EE7}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4937D5D1-2039-409A-BD83-FEC9B39B2356}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CAF9D798-C659-4B9B-8E19-EE27C3D04EE7}\TypeLib\ = "{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BhoNew.BhoApp.1\CLSID\ = "{2FF811E6-8925-4084-A649-C159955E67E8}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BhoNew.BhoApp\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2FF811E6-8925-4084-A649-C159955E67E8}\ = "BHO"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2FF811E6-8925-4084-A649-C159955E67E8}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2FF811E6-8925-4084-A649-C159955E67E8}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2FF811E6-8925-4084-A649-C159955E67E8}\VersionIndependentProgID\ = "BhoNew.BhoApp"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2144 wrote to memory of 3184	2144	81dc31d10a7769f5a5bcecb7446d3af10cf5790c95e1caffebf316af420abbc3.exe	80
PID 2144 wrote to memory of 3184	2144	81dc31d10a7769f5a5bcecb7446d3af10cf5790c95e1caffebf316af420abbc3.exe	80
PID 2144 wrote to memory of 2840	2144	81dc31d10a7769f5a5bcecb7446d3af10cf5790c95e1caffebf316af420abbc3.exe	81
PID 2144 wrote to memory of 2840	2144	81dc31d10a7769f5a5bcecb7446d3af10cf5790c95e1caffebf316af420abbc3.exe	81
PID 2144 wrote to memory of 2840	2144	81dc31d10a7769f5a5bcecb7446d3af10cf5790c95e1caffebf316af420abbc3.exe	81
PID 3184 wrote to memory of 2368	3184	msedge.exe	82
PID 3184 wrote to memory of 2368	3184	msedge.exe	82

C:\Users\Admin\AppData\Local\Temp\81dc31d10a7769f5a5bcecb7446d3af10cf5790c95e1caffebf316af420abbc3.exe
"C:\Users\Admin\AppData\Local\Temp\81dc31d10a7769f5a5bcecb7446d3af10cf5790c95e1caffebf316af420abbc3.exe"
1⤵
- Checks computer location settings
- Installs/modifies Browser Helper Object
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2144
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument http://hotvid55.com/bind2.php?id=3913139
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3184
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0x104,0x108,0x10c,0xd4,0x110,0x7fff5beb46f8,0x7fff5beb4708,0x7fff5beb4718
    3⤵
    PID:2368
- C:\Windows\SysWOW64\regsvr32.exe
  "C:\Windows\System32\regsvr32.exe" /s "C:\Windows\system32\nada32.dll"
  2⤵
  - Loads dropped DLL
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:2840

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

Replay Monitor

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Downloads

C:\Windows\SysWOW64\nada32.dll

Filesize
18KB

MD5
177932917643e0f857b909834ad13400

SHA1
d0ee90d58686c23087d87f14bb2321ecb74976db

SHA256
2081455a46b23fa63afc8ca2e74018051f1a22b281b5c6d5dc01781b1eb8dc1b

SHA512
e477c71200565a4273a0a24000761444a41d1e3dba5d05b597b098fa93aeda0d77ed0b099e5665ff20a94f4290d62d7828ca9dfe501fbb6ee5864958854c993c

Download Submit
C:\Windows\SysWOW64\nada32.dll

Filesize
18KB

MD5
177932917643e0f857b909834ad13400

SHA1
d0ee90d58686c23087d87f14bb2321ecb74976db

SHA256
2081455a46b23fa63afc8ca2e74018051f1a22b281b5c6d5dc01781b1eb8dc1b

SHA512
e477c71200565a4273a0a24000761444a41d1e3dba5d05b597b098fa93aeda0d77ed0b099e5665ff20a94f4290d62d7828ca9dfe501fbb6ee5864958854c993c

Download Submit