a1402c8778ac39986a2cd92bc130097a05fe195093ce43789e4d1770d2d7ea03

Analysis

max time kernel
185s
max time network
196s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
28/11/2022, 00:58

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General

Target

a1402c8778ac39986a2cd92bc130097a05fe195093ce43789e4d1770d2d7ea03.exe
Size

514KB
MD5

e53dc7c7eef9c9dd5486313439b25e17
SHA1

de5bbc80f9a09b0150cbd6aa8e10ef4d291fb1ab
SHA256

a1402c8778ac39986a2cd92bc130097a05fe195093ce43789e4d1770d2d7ea03
SHA512

bc966d96e347922d42d1a46df8aea964b2a985bc9a6b365d35de2483fc0b5dccaaf480029210edd092b3e4a36d82a9ca6db3a28518b7f21b5a7302a6f77fbbe7
SSDEEP

12288:ffv/cSGxdtQnvIIR40X7+u0Zpk2JjAUd19nVRkl:fn/cSa3QAIRRL30x0Ur9nol

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__	a1402c8778ac39986a2cd92bc130097a05fe195093ce43789e4d1770d2d7ea03.exe

Executes dropped EXE 1 IoCs

pid	Process
4336	s5091.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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	a1402c8778ac39986a2cd92bc130097a05fe195093ce43789e4d1770d2d7ea03.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly\Desktop.ini	s5091.exe
File created	C:\Windows\assembly\Desktop.ini	s5091.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	s5091.exe
File created	C:\Windows\assembly\Desktop.ini	s5091.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	s5091.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	a1402c8778ac39986a2cd92bc130097a05fe195093ce43789e4d1770d2d7ea03.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	a1402c8778ac39986a2cd92bc130097a05fe195093ce43789e4d1770d2d7ea03.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1152	a1402c8778ac39986a2cd92bc130097a05fe195093ce43789e4d1770d2d7ea03.exe
1152	a1402c8778ac39986a2cd92bc130097a05fe195093ce43789e4d1770d2d7ea03.exe
4336	s5091.exe
4336	s5091.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4336	s5091.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4336	s5091.exe
4336	s5091.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1152 wrote to memory of 4336	1152	a1402c8778ac39986a2cd92bc130097a05fe195093ce43789e4d1770d2d7ea03.exe	83
PID 1152 wrote to memory of 4336	1152	a1402c8778ac39986a2cd92bc130097a05fe195093ce43789e4d1770d2d7ea03.exe	83

C:\Users\Admin\AppData\Local\Temp\a1402c8778ac39986a2cd92bc130097a05fe195093ce43789e4d1770d2d7ea03.exe
"C:\Users\Admin\AppData\Local\Temp\a1402c8778ac39986a2cd92bc130097a05fe195093ce43789e4d1770d2d7ea03.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:1152
- C:\Users\Admin\AppData\Local\Temp\n5091\s5091.exe
  "C:\Users\Admin\AppData\Local\Temp\n5091\s5091.exe" d4ee8ad04a1e670ddf29f623F77Af0bvhyqSMnKWTlvD2lewx7nlwwIPdI6SPoxF1MThNwQDg2knKCpsXaVyM3cCavDjbf+KBeKlXXUiu+RuviP2BD+Ky+wJSJluy9kn+zrh/LsCKevafiUZzJG+fmfx02frIoiLSFKGiuNU5eDQWJQR /v "C:\Users\Admin\AppData\Local\Temp\a1402c8778ac39986a2cd92bc130097a05fe195093ce43789e4d1770d2d7ea03.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:4336

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\n5091\s5091.exe

Filesize
231KB

MD5
b66df6b28fd3bfb63beea9dbb5382f1b

SHA1
c4fe023f020e73574421e684181f998a0645ce5e

SHA256
0db644f7311d596a0cabe95985b716f63edde6b296e9ff8fd30633497c1b9a53

SHA512
ab4dbe774d9c7e396504584988bcff858779e29b1fc5b717cb7c98633b78dcc104d1853462f846e1a0aa535ce545acaff946ebcad6f82fed8bbd49944ff7c791

Download Submit
C:\Users\Admin\AppData\Local\Temp\n5091\s5091.exe

Filesize
231KB

MD5
b66df6b28fd3bfb63beea9dbb5382f1b

SHA1
c4fe023f020e73574421e684181f998a0645ce5e

SHA256
0db644f7311d596a0cabe95985b716f63edde6b296e9ff8fd30633497c1b9a53

SHA512
ab4dbe774d9c7e396504584988bcff858779e29b1fc5b717cb7c98633b78dcc104d1853462f846e1a0aa535ce545acaff946ebcad6f82fed8bbd49944ff7c791

Download Submit
memory/4336-135-0x000000001BA50000-0x000000001C486000-memory.dmp

Filesize
10.2MB

Download