fb226657e96bda0bbbfe6ca37c5bb2b5f12e8139fa3badaf20d902cbedef1933

Analysis

max time kernel
141s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
29/09/2024, 03:11

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General

Target

details.exe
Size

84KB
MD5

d3a8b3dcde44b81c0e69cc2a8a36e844
SHA1

5f0acca868adf8a3878270194e48db674dcf360c
SHA256

e921404d6c4224486ec3ad2cfb2712d2dd628c586bd42e94fdbd021db7576016
SHA512

9b757944c392f0c2b252ac1d27f3d30a1b3d200271ff6c3984f97ff619d2e5f3ae53102e5962a947a72138f4fb5d9976363c4719fe0e5b1dfa71c669a1453a96
SSDEEP

1536:8uGysa3E+EznfRASJBA+9PfaFYHZ9qJfq8lHrRf2QeCTscXyv3g0XP46NCHEKS62:j07zpjBP9XOkZ958lHrN2QicCo0f46tT

Score

7^/10

discovery persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
824	winssk32.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\SSK Service = "C:\\Windows\\winssk32.exe"	details.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SSK Service = "C:\\Windows\\winssk32.exe"	details.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\winssk32.exe	details.exe
File opened for modification	C:\Windows\msrrf.dat	winssk32.exe
File created	C:\Windows\winssk32.exe	details.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	details.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winssk32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1612 wrote to memory of 824	1612	details.exe	87
PID 1612 wrote to memory of 824	1612	details.exe	87
PID 1612 wrote to memory of 824	1612	details.exe	87

C:\Users\Admin\AppData\Local\Temp\details.exe
"C:\Users\Admin\AppData\Local\Temp\details.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1612
- C:\Windows\winssk32.exe
  C:\Windows\winssk32.exe dwaqr
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  PID:824

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4292,i,12470628711992022444,7767535593390851522,262144 --variations-seed-version --mojo-platform-channel-handle=3780 /prefetch:8
1⤵
PID:2052

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\winssk32.exe

Filesize
84KB

MD5
d3a8b3dcde44b81c0e69cc2a8a36e844

SHA1
5f0acca868adf8a3878270194e48db674dcf360c

SHA256
e921404d6c4224486ec3ad2cfb2712d2dd628c586bd42e94fdbd021db7576016

SHA512
9b757944c392f0c2b252ac1d27f3d30a1b3d200271ff6c3984f97ff619d2e5f3ae53102e5962a947a72138f4fb5d9976363c4719fe0e5b1dfa71c669a1453a96

Download Submit
memory/824-5-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/824-6-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1612-3-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads