d0fff4c29b2105289d2bb121a80c990e3f7d110f89978a8e8254a9c6eba95784

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12-01-2024 15:08

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General

Target

56ca43ba032d7b7929cf2e28207be039.exe
Size

27KB
MD5

56ca43ba032d7b7929cf2e28207be039
SHA1

2fd42dec311104b87d601d406bb4fbd8c158a29f
SHA256

d0fff4c29b2105289d2bb121a80c990e3f7d110f89978a8e8254a9c6eba95784
SHA512

c62c8ad1d100e963505045c0b1fb95eb2896b90673b346c21d4a3f5d80b066320ee11284a45cf1e6b21158cde9fa35b43fb689f12f3a4957187b0dbaf7912820
SSDEEP

768:ENy+CCW5uVi8ZgT2MMWN5xUpGa/9SPji:EN3e58ZgToWN5QSPO

Score

7^/10

persistence

Malware Config

Signatures

Checks computer location settings 2 TTPs 2 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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	56ca43ba032d7b7929cf2e28207be039.exe
Key value queried	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	win32us.exe

Deletes itself 1 IoCs

pid	Process
1256	win32us.exe

Executes dropped EXE 2 IoCs

pid	Process
1256	win32us.exe
4648	win32us.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\win32us = "c:\\windows\\system32\\win32us.exe /noconnect"	56ca43ba032d7b7929cf2e28207be039.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\win32us = "c:\\windows\\system32\\win32us.exe /noconnect"	win32us.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	\??\c:\windows\SysWOW64\win32us.exe	56ca43ba032d7b7929cf2e28207be039.exe
File opened for modification	\??\c:\windows\SysWOW64\win32us.exe	56ca43ba032d7b7929cf2e28207be039.exe
File opened for modification	C:\Windows\SysWOW64\win32us.exe	56ca43ba032d7b7929cf2e28207be039.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 316 wrote to memory of 1256	316	56ca43ba032d7b7929cf2e28207be039.exe	90
PID 316 wrote to memory of 1256	316	56ca43ba032d7b7929cf2e28207be039.exe	90
PID 316 wrote to memory of 1256	316	56ca43ba032d7b7929cf2e28207be039.exe	90
PID 1256 wrote to memory of 4648	1256	win32us.exe	92
PID 1256 wrote to memory of 4648	1256	win32us.exe	92
PID 1256 wrote to memory of 4648	1256	win32us.exe	92

C:\Users\Admin\AppData\Local\Temp\56ca43ba032d7b7929cf2e28207be039.exe
"C:\Users\Admin\AppData\Local\Temp\56ca43ba032d7b7929cf2e28207be039.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:316
- C:\windows\SysWOW64\win32us.exe
  "C:\windows\system32\win32us.exe" -kill c:\users\admin\appdata\local\temp\56ca43ba032d7b7929cf2e28207be039.exe /install
  2⤵
  - Checks computer location settings
  - Deletes itself
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1256
- - C:\windows\SysWOW64\win32us.exe
    "C:\windows\system32\win32us.exe" -kill c:\windows\syswow64\win32us.exe /install /install
    3⤵
    - Executes dropped EXE
    PID:4648

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\win32us.exe

Filesize
27KB

MD5
56ca43ba032d7b7929cf2e28207be039

SHA1
2fd42dec311104b87d601d406bb4fbd8c158a29f

SHA256
d0fff4c29b2105289d2bb121a80c990e3f7d110f89978a8e8254a9c6eba95784

SHA512
c62c8ad1d100e963505045c0b1fb95eb2896b90673b346c21d4a3f5d80b066320ee11284a45cf1e6b21158cde9fa35b43fb689f12f3a4957187b0dbaf7912820

Download Submit
memory/316-0-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/316-14-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1256-16-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/4648-17-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads