7559e6ca8b77400f88bf4e67208a1c32570a670068eccae9e3d226cc5471bd47

Resubmissions

28-04-2024 18:31

240428-w6cwyaec5v 10

21-04-2024 08:57

21-04-2024 05:45

18-04-2024 19:05

18-04-2024 16:34

04-03-2024 18:33

02-03-2024 17:01

02-03-2024 10:05

Analysis

max time kernel
139s
max time network
128s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
18-04-2024 19:05

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General

Target

bazaar.2020.02/HEUR-Backdoor.Win32.exe
Size

43KB
MD5

bf586b6af6353d3770bcee9907862711
SHA1

07b687ce7239ea191a9cc253d3cfd1fafec06d2b
SHA256

ecb05f56049ff565d1a77351ac21374b9ba05e3cb5ecabbd113d44a254d4e642
SHA512

897a8acfabf1b278ad2ce3f704a1e2e59fbc08dc3904785fd98e63e9aca705d1710e66727399c9eeab76f545dec3d97ae566ce33e0a103c1b0588ee4370a0e51
SSDEEP

768:VrgeWGJaj2b2/K6/1CSGIKPlavRzY0nEs3UgLM6KLi0z1xSFopI:ybs4K6dyNPIvRMEEgCnSipI

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

Smipvv.exeSmipvv.exe

pid	Process
2900	Smipvv.exe
1444	Smipvv.exe

Loads dropped DLL 1 IoCs

Processes:

Smipvv.exe

pid	Process
2900	Smipvv.exe

Creates a Windows Service
persistence

Drops file in System32 directory 5 IoCs

Processes:

Smipvv.exe

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	Smipvv.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\0DA515F703BB9B49479E8697ADB0B955_786387CC77858B88BA3234B304062475	Smipvv.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\0DA515F703BB9B49479E8697ADB0B955_786387CC77858B88BA3234B304062475	Smipvv.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CF14D1855652602540DFCFECD21854DB_71F4740D37287A91812B9479338ACF24	Smipvv.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CF14D1855652602540DFCFECD21854DB_71F4740D37287A91812B9479338ACF24	Smipvv.exe

Drops file in Program Files directory 2 IoCs

Processes:

HEUR-Backdoor.Win32.exe

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft Kfhbnr\Smipvv.exe	HEUR-Backdoor.Win32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Kfhbnr\Smipvv.exe	HEUR-Backdoor.Win32.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

Smipvv.exe

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A936F3F5-C9AB-428D-9A1C-229857ABB64F}\WpadDecisionReason = "1"	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\22-7a-9d-7d-56-cf	Smipvv.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\22-7a-9d-7d-56-cf\WpadDecisionTime = 90e955e5c391da01	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\CA\CTLs	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	Smipvv.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A936F3F5-C9AB-428D-9A1C-229857ABB64F}\WpadDecision = "0"	Smipvv.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Root\Certificates	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\Certificates	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\CRLs	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\trust\CRLs	Smipvv.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A936F3F5-C9AB-428D-9A1C-229857ABB64F}\WpadNetworkName = "Network 3"	Smipvv.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\22-7a-9d-7d-56-cf\WpadDecision = "0"	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	Smipvv.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Root\CRLs	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	Smipvv.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\My	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\CA\CTLs	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\SmartCardRoot\CTLs	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	Smipvv.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\22-7a-9d-7d-56-cf\WpadDecisionReason = "1"	Smipvv.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\CA\Certificates	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\trust\Certificates	Smipvv.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	Smipvv.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\trust\CTLs	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\trust\CRLs	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\CA\CRLs	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\SmartCardRoot\Certificates	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\trust\Certificates	Smipvv.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000	Smipvv.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Disallowed\CRLs	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Disallowed\CTLs	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\trust\CTLs	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\CA\Certificates	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\CA\CRLs	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Root\CTLs	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\CTLs	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	Smipvv.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\SmartCardRoot\CRLs	Smipvv.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0089000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A936F3F5-C9AB-428D-9A1C-229857ABB64F}	Smipvv.exe

Suspicious behavior: RenamesItself 1 IoCs

Processes:

HEUR-Backdoor.Win32.exe

pid	Process
2692	HEUR-Backdoor.Win32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

HEUR-Backdoor.Win32.exe

description	pid	Process
Token: SeDebugPrivilege	2692	HEUR-Backdoor.Win32.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

Smipvv.exe

description	pid	Process	procid_target
PID 2900 wrote to memory of 1444	2900	Smipvv.exe	29
PID 2900 wrote to memory of 1444	2900	Smipvv.exe	29
PID 2900 wrote to memory of 1444	2900	Smipvv.exe	29
PID 2900 wrote to memory of 1444	2900	Smipvv.exe	29

C:\Users\Admin\AppData\Local\Temp\bazaar.2020.02\HEUR-Backdoor.Win32.exe
"C:\Users\Admin\AppData\Local\Temp\bazaar.2020.02\HEUR-Backdoor.Win32.exe"
1⤵
- Drops file in Program Files directory
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
PID:2692

C:\Program Files (x86)\Microsoft Kfhbnr\Smipvv.exe
"C:\Program Files (x86)\Microsoft Kfhbnr\Smipvv.exe"
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2900
- C:\Program Files (x86)\Microsoft Kfhbnr\Smipvv.exe
  "C:\Program Files (x86)\Microsoft Kfhbnr\Smipvv.exe" Win7
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Modifies data under HKEY_USERS
  PID:1444

Network

MITRE ATT&CK Matrix

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Downloads

C:\Program Files (x86)\Microsoft Kfhbnr\Smipvv.exe

Filesize
43KB

MD5
bf586b6af6353d3770bcee9907862711

SHA1
07b687ce7239ea191a9cc253d3cfd1fafec06d2b

SHA256
ecb05f56049ff565d1a77351ac21374b9ba05e3cb5ecabbd113d44a254d4e642

SHA512
897a8acfabf1b278ad2ce3f704a1e2e59fbc08dc3904785fd98e63e9aca705d1710e66727399c9eeab76f545dec3d97ae566ce33e0a103c1b0588ee4370a0e51

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