7559e6ca8b77400f88bf4e67208a1c32570a670068eccae9e3d226cc5471bd47

Resubmissions

20-09-2024 07:43

240920-jkdj5avhqa 10

16-09-2024 13:49

240916-q4rz7a1apg 10

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
20-09-2024 07:43

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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

discovery persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

Smipvv.exeSmipvv.exe

pid process

1700 Smipvv.exe
4544 Smipvv.exe
Creates a Windows Service
persistence

pid	process
1700	Smipvv.exe
4544	Smipvv.exe

Drops file in System32 directory 12 IoCs

Processes:

Smipvv.exe

description	ioc	process
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_8C1AD9434E0E1576771CA7E7EAD43D9E	Smipvv.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	Smipvv.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	Smipvv.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	Smipvv.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache	Smipvv.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData	Smipvv.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CF14D1855652602540DFCFECD21854DB_8C1AD9434E0E1576771CA7E7EAD43D9E	Smipvv.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	Smipvv.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft	Smipvv.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content	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

System Location Discovery: System Language Discovery 1 TTPs 3 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

Processes:

HEUR-Backdoor.Win32.exeSmipvv.exeSmipvv.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HEUR-Backdoor.Win32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Smipvv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Smipvv.exe

Modifies data under HKEY_USERS 9 IoCs

Processes:

Smipvv.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	Smipvv.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	Smipvv.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	Smipvv.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "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\Windows\CurrentVersion\Internet Settings\ZoneMap\	Smipvv.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	Smipvv.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	Smipvv.exe

Suspicious behavior: RenamesItself 1 IoCs

Processes:

HEUR-Backdoor.Win32.exe

pid process

4364 HEUR-Backdoor.Win32.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

HEUR-Backdoor.Win32.exe

description pid process

Token: SeDebugPrivilege 4364 HEUR-Backdoor.Win32.exe

pid	process
4364	HEUR-Backdoor.Win32.exe

description	pid	process
Token: SeDebugPrivilege	4364	HEUR-Backdoor.Win32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

Smipvv.exe

description	pid	process	target process
PID 1700 wrote to memory of 4544	1700	Smipvv.exe	Smipvv.exe
PID 1700 wrote to memory of 4544	1700	Smipvv.exe	Smipvv.exe
PID 1700 wrote to memory of 4544	1700	Smipvv.exe	Smipvv.exe

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
- System Location Discovery: System Language Discovery
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
PID:4364

C:\Program Files (x86)\Microsoft Kfhbnr\Smipvv.exe
"C:\Program Files (x86)\Microsoft Kfhbnr\Smipvv.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1700

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
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:4544

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Microsoft Kfhbnr\Smipvv.exe
Filesize
43KB

MD5
bf586b6af6353d3770bcee9907862711

SHA1
07b687ce7239ea191a9cc253d3cfd1fafec06d2b

SHA256
ecb05f56049ff565d1a77351ac21374b9ba05e3cb5ecabbd113d44a254d4e642

SHA512
897a8acfabf1b278ad2ce3f704a1e2e59fbc08dc3904785fd98e63e9aca705d1710e66727399c9eeab76f545dec3d97ae566ce33e0a103c1b0588ee4370a0e51

Download Submit
memory/4364-3-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download