7559e6ca8b77400f88bf4e67208a1c32570a670068eccae9e3d226cc5471bd47

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Analysis

max time kernel
143s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
24-07-2023 06:40

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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
2356	Smipvv.exe
2608	Smipvv.exe

Enumerates connected drives 3 TTPs 22 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

Smipvv.exe

description	ioc	Process
File opened (read-only)	\??\I:	Smipvv.exe
File opened (read-only)	\??\K:	Smipvv.exe
File opened (read-only)	\??\N:	Smipvv.exe
File opened (read-only)	\??\T:	Smipvv.exe
File opened (read-only)	\??\V:	Smipvv.exe
File opened (read-only)	\??\X:	Smipvv.exe
File opened (read-only)	\??\G:	Smipvv.exe
File opened (read-only)	\??\M:	Smipvv.exe
File opened (read-only)	\??\O:	Smipvv.exe
File opened (read-only)	\??\P:	Smipvv.exe
File opened (read-only)	\??\Q:	Smipvv.exe
File opened (read-only)	\??\S:	Smipvv.exe
File opened (read-only)	\??\W:	Smipvv.exe
File opened (read-only)	\??\H:	Smipvv.exe
File opened (read-only)	\??\E:	Smipvv.exe
File opened (read-only)	\??\J:	Smipvv.exe
File opened (read-only)	\??\L:	Smipvv.exe
File opened (read-only)	\??\Y:	Smipvv.exe
File opened (read-only)	\??\Z:	Smipvv.exe
File opened (read-only)	\??\B:	Smipvv.exe
File opened (read-only)	\??\U:	Smipvv.exe
File opened (read-only)	\??\R:	Smipvv.exe

Creates a Windows Service
persistence

Drops file in System32 directory 12 IoCs

Processes:

Smipvv.exe

description	ioc	Process
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	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\MetaData\3FE2BD01AB6BC312BF0DADE7F797388F_896832C6BC857CFAEA9E59E166B13E2C	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\Local\Microsoft\Windows\INetCookies	Smipvv.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3FE2BD01AB6BC312BF0DADE7F797388F_896832C6BC857CFAEA9E59E166B13E2C	Smipvv.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\AD5F118F7897046E8CA970AE6A6AB70B_87A5D2A17D34E46FC933087294B7150D	Smipvv.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\AD5F118F7897046E8CA970AE6A6AB70B_87A5D2A17D34E46FC933087294B7150D	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\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

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Smipvv.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	Smipvv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	Smipvv.exe

Modifies data under HKEY_USERS 14 IoCs

Processes:

Smipvv.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	Smipvv.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	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\ActiveMovie\devenum	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	Smipvv.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	Smipvv.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie	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\Windows\CurrentVersion\Internet Settings\ZoneMap\	Smipvv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	Smipvv.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum\Version = "7"	Smipvv.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	Smipvv.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	Smipvv.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Smipvv.exe

pid	Process
2608	Smipvv.exe
2608	Smipvv.exe

Suspicious behavior: RenamesItself 1 IoCs

Processes:

HEUR-Backdoor.Win32.exe

pid	Process
4820	HEUR-Backdoor.Win32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

HEUR-Backdoor.Win32.exe

description	pid	Process
Token: SeDebugPrivilege	4820	HEUR-Backdoor.Win32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

Smipvv.exe

description	pid	Process	procid_target
PID 2356 wrote to memory of 2608	2356	Smipvv.exe	87
PID 2356 wrote to memory of 2608	2356	Smipvv.exe	87
PID 2356 wrote to memory of 2608	2356	Smipvv.exe	87

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:4820

C:\Program Files (x86)\Microsoft Kfhbnr\Smipvv.exe
"C:\Program Files (x86)\Microsoft Kfhbnr\Smipvv.exe"
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2356
- C:\Program Files (x86)\Microsoft Kfhbnr\Smipvv.exe
  "C:\Program Files (x86)\Microsoft Kfhbnr\Smipvv.exe" Win7
  2⤵
  - Executes dropped EXE
  - Enumerates connected drives
  - Drops file in System32 directory
  - Checks processor information in registry
  - Modifies data under HKEY_USERS
  - Suspicious behavior: EnumeratesProcesses
  PID:2608

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

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

Filesize
43KB

MD5
bf586b6af6353d3770bcee9907862711

SHA1
07b687ce7239ea191a9cc253d3cfd1fafec06d2b

SHA256
ecb05f56049ff565d1a77351ac21374b9ba05e3cb5ecabbd113d44a254d4e642

SHA512
897a8acfabf1b278ad2ce3f704a1e2e59fbc08dc3904785fd98e63e9aca705d1710e66727399c9eeab76f545dec3d97ae566ce33e0a103c1b0588ee4370a0e51

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

Filesize
43KB

MD5
bf586b6af6353d3770bcee9907862711

SHA1
07b687ce7239ea191a9cc253d3cfd1fafec06d2b

SHA256
ecb05f56049ff565d1a77351ac21374b9ba05e3cb5ecabbd113d44a254d4e642

SHA512
897a8acfabf1b278ad2ce3f704a1e2e59fbc08dc3904785fd98e63e9aca705d1710e66727399c9eeab76f545dec3d97ae566ce33e0a103c1b0588ee4370a0e51

Download Submit