7559e6ca8b77400f88bf4e67208a1c32570a670068eccae9e3d226cc5471bd47

Resubmissions

26-09-2024 06:42

240926-hgnp9ashkk 10

25-09-2024 16:40

240925-t6kwfayfph 10

Analysis

max time kernel
135s
max time network
101s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
26-09-2024 06:42

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General

Target

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

43KB
MD5

f3cbdffbf6bfc26fe09f95e88b188c09
SHA1

e8feb8d7baa1290f591693f068cd6941cb9c878c
SHA256

1c659cbf8f73b2dd0ed8238595c225dbc1e87d5ea538c24a5d52faf0f4a49e7d
SHA512

bac9cc4ebde8e1133d8a332c327dcc72ef83f3457b3048899be3550c7d1c03c8c59d0ab82304def44793ac9fc91a193a018e6fbb256681b5baad366df4e8b3b3
SSDEEP

768:VrgeWGJaj2b2/K6/1CSGIKPlavRzY0nEs3UgLM6KLi0z1xxFopI:ybs4K6dyNPIvRMEEgCnxipI

Score

7^/10

discovery persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

Stpxrq.exeStpxrq.exe

pid process

3480 Stpxrq.exe
4648 Stpxrq.exe
Creates a Windows Service
persistence

pid	process
3480	Stpxrq.exe
4648	Stpxrq.exe

Drops file in System32 directory 12 IoCs

Processes:

Stpxrq.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	Stpxrq.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	Stpxrq.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content	Stpxrq.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\0DA515F703BB9B49479E8697ADB0B955_786387CC77858B88BA3234B304062475	Stpxrq.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CF14D1855652602540DFCFECD21854DB_8C1AD9434E0E1576771CA7E7EAD43D9E	Stpxrq.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	Stpxrq.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	Stpxrq.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft	Stpxrq.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache	Stpxrq.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData	Stpxrq.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\0DA515F703BB9B49479E8697ADB0B955_786387CC77858B88BA3234B304062475	Stpxrq.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CF14D1855652602540DFCFECD21854DB_8C1AD9434E0E1576771CA7E7EAD43D9E	Stpxrq.exe

Drops file in Program Files directory 2 IoCs

Processes:

HEUR-Backdoor.Win32.exe

description	ioc	process
File created	C:\Program Files (x86)\Microsoft Qizfbz\Stpxrq.exe	HEUR-Backdoor.Win32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Qizfbz\Stpxrq.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.exeStpxrq.exeStpxrq.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	Stpxrq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Stpxrq.exe

Modifies data under HKEY_USERS 9 IoCs

Processes:

Stpxrq.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	Stpxrq.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	Stpxrq.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	Stpxrq.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	Stpxrq.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	Stpxrq.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	Stpxrq.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	Stpxrq.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	Stpxrq.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	Stpxrq.exe

Suspicious behavior: RenamesItself 1 IoCs

Processes:

HEUR-Backdoor.Win32.exe

pid process

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

Processes:

HEUR-Backdoor.Win32.exe

description pid process

Token: SeDebugPrivilege 32 HEUR-Backdoor.Win32.exe

pid	process
32	HEUR-Backdoor.Win32.exe

description	pid	process
Token: SeDebugPrivilege	32	HEUR-Backdoor.Win32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

Stpxrq.exe

description	pid	process	target process
PID 3480 wrote to memory of 4648	3480	Stpxrq.exe	Stpxrq.exe
PID 3480 wrote to memory of 4648	3480	Stpxrq.exe	Stpxrq.exe
PID 3480 wrote to memory of 4648	3480	Stpxrq.exe	Stpxrq.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:32

C:\Program Files (x86)\Microsoft Qizfbz\Stpxrq.exe
"C:\Program Files (x86)\Microsoft Qizfbz\Stpxrq.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3480
- C:\Program Files (x86)\Microsoft Qizfbz\Stpxrq.exe
  "C:\Program Files (x86)\Microsoft Qizfbz\Stpxrq.exe" Win7
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  PID:4648

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 Qizfbz\Stpxrq.exe

Filesize
43KB

MD5
f3cbdffbf6bfc26fe09f95e88b188c09

SHA1
e8feb8d7baa1290f591693f068cd6941cb9c878c

SHA256
1c659cbf8f73b2dd0ed8238595c225dbc1e87d5ea538c24a5d52faf0f4a49e7d

SHA512
bac9cc4ebde8e1133d8a332c327dcc72ef83f3457b3048899be3550c7d1c03c8c59d0ab82304def44793ac9fc91a193a018e6fbb256681b5baad366df4e8b3b3

Download Submit
memory/32-3-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download