f1f731336c7a3b7194e2533472a3fb0d6e4e508c6ee364cd848692ab7b71ed66

Analysis

max time kernel
95s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
11/10/2022, 18:50

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General

Target

f1f731336c7a3b7194e2533472a3fb0d6e4e508c6ee364cd848692ab7b71ed66.exe
Size

514KB
MD5

1760aea04df6fa4e3c4bccc56c8daf10
SHA1

5b9d1752c3bf65fe955500116b50212e5bd93269
SHA256

f1f731336c7a3b7194e2533472a3fb0d6e4e508c6ee364cd848692ab7b71ed66
SHA512

4d161b7e98efe4e1aff3049532f366e674d587361650b014530f5bb8c14198ebd05a45bf4a005472c7b012b911286ede348b2163e433a52e774302c84dbca49d
SSDEEP

12288:ffv/cSGxdtQnvIIR40X7+u0Zpk2JjAUd19nVRkT:fn/cSa3QAIRRL30x0Ur9noT

Score

9^/10

evasion

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	f1f731336c7a3b7194e2533472a3fb0d6e4e508c6ee364cd848692ab7b71ed66.exe

Executes dropped EXE 1 IoCs

pid	Process
4656	s5604.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	f1f731336c7a3b7194e2533472a3fb0d6e4e508c6ee364cd848692ab7b71ed66.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	s5604.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	s5604.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	s5604.exe
File created	C:\Windows\assembly\Desktop.ini	s5604.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	s5604.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	f1f731336c7a3b7194e2533472a3fb0d6e4e508c6ee364cd848692ab7b71ed66.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	f1f731336c7a3b7194e2533472a3fb0d6e4e508c6ee364cd848692ab7b71ed66.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1132	f1f731336c7a3b7194e2533472a3fb0d6e4e508c6ee364cd848692ab7b71ed66.exe
1132	f1f731336c7a3b7194e2533472a3fb0d6e4e508c6ee364cd848692ab7b71ed66.exe
4656	s5604.exe
4656	s5604.exe
4656	s5604.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4656	s5604.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4656	s5604.exe
4656	s5604.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1132 wrote to memory of 4656	1132	f1f731336c7a3b7194e2533472a3fb0d6e4e508c6ee364cd848692ab7b71ed66.exe	80
PID 1132 wrote to memory of 4656	1132	f1f731336c7a3b7194e2533472a3fb0d6e4e508c6ee364cd848692ab7b71ed66.exe	80

C:\Users\Admin\AppData\Local\Temp\f1f731336c7a3b7194e2533472a3fb0d6e4e508c6ee364cd848692ab7b71ed66.exe
"C:\Users\Admin\AppData\Local\Temp\f1f731336c7a3b7194e2533472a3fb0d6e4e508c6ee364cd848692ab7b71ed66.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks computer location settings
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1132
- C:\Users\Admin\AppData\Local\Temp\n5604\s5604.exe
  "C:\Users\Admin\AppData\Local\Temp\n5604\s5604.exe" 0da29f984e91daf97667a969sYKXQx4zlMyGQf6mtDjMQulMoobdQWSJHg8GI12skGrEBytMwxJ3SAPcmMdhfeB2YFdzM6B3ixvopwqlL3mr9V+wBUt5XJ+JEbZOKp3gmnwG9um2bKEdBv/AnW6QYPqtfw+Anxwp3lSn9yoaQQdaWcPq /v "C:\Users\Admin\AppData\Local\Temp\f1f731336c7a3b7194e2533472a3fb0d6e4e508c6ee364cd848692ab7b71ed66.exe"
  2⤵
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4656

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\n5604\s5604.exe

Filesize
231KB

MD5
b66df6b28fd3bfb63beea9dbb5382f1b

SHA1
c4fe023f020e73574421e684181f998a0645ce5e

SHA256
0db644f7311d596a0cabe95985b716f63edde6b296e9ff8fd30633497c1b9a53

SHA512
ab4dbe774d9c7e396504584988bcff858779e29b1fc5b717cb7c98633b78dcc104d1853462f846e1a0aa535ce545acaff946ebcad6f82fed8bbd49944ff7c791

Download Submit
C:\Users\Admin\AppData\Local\Temp\n5604\s5604.exe

Filesize
231KB

MD5
b66df6b28fd3bfb63beea9dbb5382f1b

SHA1
c4fe023f020e73574421e684181f998a0645ce5e

SHA256
0db644f7311d596a0cabe95985b716f63edde6b296e9ff8fd30633497c1b9a53

SHA512
ab4dbe774d9c7e396504584988bcff858779e29b1fc5b717cb7c98633b78dcc104d1853462f846e1a0aa535ce545acaff946ebcad6f82fed8bbd49944ff7c791

Download Submit
memory/4656-135-0x00007FFFDC8F0000-0x00007FFFDD326000-memory.dmp

Filesize
10.2MB

Download
memory/4656-136-0x000000000134A000-0x000000000134F000-memory.dmp

Filesize
20KB

Download
memory/4656-137-0x000000000134A000-0x000000000134F000-memory.dmp

Filesize
20KB

Download
memory/4656-138-0x000000000134A000-0x000000000134F000-memory.dmp

Filesize
20KB

Download