ab93d9eac6ff06f39a7f0141490f5370cc5b348a3705125b59ade47124f5e29b

Analysis

max time kernel
145s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15/03/2024, 16:57

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General

Target
cbf08fa4d16a84fe73d3bd79ae4bd0bc.dll
Size 755KB
Sample240315-vghkfsff79
SHA256 ab93d9eac6ff06f39a7f0141490f5370cc5b348a3705125b59ade47124f5e29b
MD5 cbf08fa4d16a84fe73d3bd79ae4bd0bc
SHA1 e7f7c4b9ae579bb45336ddd977c40e72f19128be
SHA512 7becfbc71847908836b18d93c9398cc58fe9c5a4a97d6fc93cbc9320ee2bf84cec1163b76f70d28d620e5ac090fd338dd42fca6dc91c79d5a67d4f698e93c5a4
SSDEEP 12288:uLozFoYl5OJ4KX1rFBVoP9VLSr3SgyXIKcOzN+IldpxvhvviFbJgdm8TIxAqO7WW:uUJoYuJVfByPLSZKcyrpxvh1UdOAuedw
MD5 SHA1 SHA512 SSDEEP

Score

6^/10

adware stealer

Malware Config

Signatures

Installs/modifies Browser Helper Object 2 TTPs 3 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\{FCAAAC14-BC46-40CA-9CB2-CBB12C6739EB}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{FCAAAC14-BC46-40CA-9CB2-CBB12C6739EB}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{FCAAAC14-BC46-40CA-9CB2-CBB12C6739EB}\ = "Banco do Brasil S.A."	regsvr32.exe

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{FCAAAC14-BC46-40CA-9CB2-CBB12C6739EB}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{FCAAAC14-BC46-40CA-9CB2-CBB12C6739EB}\	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{FCAAAC14-BC46-40CA-9CB2-CBB12C6739EB}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{FCAAAC14-BC46-40CA-9CB2-CBB12C6739EB}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\cbf08fa4d16a84fe73d3bd79ae4bd0bc.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{FCAAAC14-BC46-40CA-9CB2-CBB12C6739EB}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{FCAAAC14-BC46-40CA-9CB2-CBB12C6739EB}\ = "GbiehObj Class"	regsvr32.exe

Suspicious use of AdjustPrivilegeToken 19 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3764	regsvr32.exe
Token: SeSecurityPrivilege	3764	regsvr32.exe
Token: SeTakeOwnershipPrivilege	3764	regsvr32.exe
Token: SeLoadDriverPrivilege	3764	regsvr32.exe
Token: SeSystemProfilePrivilege	3764	regsvr32.exe
Token: SeSystemtimePrivilege	3764	regsvr32.exe
Token: SeProfSingleProcessPrivilege	3764	regsvr32.exe
Token: SeIncBasePriorityPrivilege	3764	regsvr32.exe
Token: SeCreatePagefilePrivilege	3764	regsvr32.exe
Token: SeShutdownPrivilege	3764	regsvr32.exe
Token: SeDebugPrivilege	3764	regsvr32.exe
Token: SeSystemEnvironmentPrivilege	3764	regsvr32.exe
Token: SeRemoteShutdownPrivilege	3764	regsvr32.exe
Token: SeUndockPrivilege	3764	regsvr32.exe
Token: SeManageVolumePrivilege	3764	regsvr32.exe
Token: 33	3764	regsvr32.exe
Token: 34	3764	regsvr32.exe
Token: 35	3764	regsvr32.exe
Token: 36	3764	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5100 wrote to memory of 3764	5100	regsvr32.exe	94
PID 5100 wrote to memory of 3764	5100	regsvr32.exe	94
PID 5100 wrote to memory of 3764	5100	regsvr32.exe	94

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\cbf08fa4d16a84fe73d3bd79ae4bd0bc.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:5100
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\cbf08fa4d16a84fe73d3bd79ae4bd0bc.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  PID:3764

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=4156 --field-trial-handle=2304,i,7548677271533893574,11048237606705436109,262144 --variations-seed-version /prefetch:8
1⤵
PID:2252

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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