080e57d9589bd4bafab6185f089798b6a7f71117d7a6cda1ba3912c16d2e68a5

Analysis

max time kernel
148s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
30/12/2023, 23:23

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General

Target

1fe2c5a7121acc1e42dfa3fb67eaac8b.exe
Size

135KB
MD5

1fe2c5a7121acc1e42dfa3fb67eaac8b
SHA1

afd8d01c6f3d434006e698c0910452db022cb980
SHA256

080e57d9589bd4bafab6185f089798b6a7f71117d7a6cda1ba3912c16d2e68a5
SHA512

7f0236c414909342a9a9c5e2daeab49a280f80a0c7565cb02c9c50e07b534a57031d92df0bb3c5cc59ebad76b27666ac3c1804dfc4babdb62c6373ada68149ae
SSDEEP

3072:LgXdZt9P6D3XJ5mhey9tke1o26qKxc9ZC+Ej2Fni+1si:Le34eeetke1o2Y4YqSi

Score

7^/10

discovery persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3144	wletins.exe

Loads dropped DLL 1 IoCs

pid	Process
4348	1fe2c5a7121acc1e42dfa3fb67eaac8b.exe

Adds Run key to start application 2 TTPs 1 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\Windowlet = "C:\\Program Files (x86)\\Windowlet\\windowlet.exe"	wletins.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 6 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Windowlet\Windowlets.dll	1fe2c5a7121acc1e42dfa3fb67eaac8b.exe
File created	C:\Program Files (x86)\Windowlet\Windowlet.exe	1fe2c5a7121acc1e42dfa3fb67eaac8b.exe
File created	C:\Program Files (x86)\Windowlet\Uninstall.exe	1fe2c5a7121acc1e42dfa3fb67eaac8b.exe
File created	C:\Program Files (x86)\Windowlet\Windowset.exe	1fe2c5a7121acc1e42dfa3fb67eaac8b.exe
File created	C:\Program Files (x86)\Windowlet\wletins.exe	1fe2c5a7121acc1e42dfa3fb67eaac8b.exe
File opened for modification	C:\Program Files (x86)\Windowlet\wletdo.ini	wletins.exe

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3144	wletins.exe
3144	wletins.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4348 wrote to memory of 3144	4348	1fe2c5a7121acc1e42dfa3fb67eaac8b.exe	20
PID 4348 wrote to memory of 3144	4348	1fe2c5a7121acc1e42dfa3fb67eaac8b.exe	20
PID 4348 wrote to memory of 3144	4348	1fe2c5a7121acc1e42dfa3fb67eaac8b.exe	20

C:\Users\Admin\AppData\Local\Temp\1fe2c5a7121acc1e42dfa3fb67eaac8b.exe
"C:\Users\Admin\AppData\Local\Temp\1fe2c5a7121acc1e42dfa3fb67eaac8b.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4348
- C:\Program Files (x86)\Windowlet\wletins.exe
  "C:\Program Files (x86)\Windowlet\wletins.exe" C:\Users\Admin\AppData\Local\Temp\1fe2c5a7121acc1e42dfa3fb67eaac8b.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Program Files directory
  - Suspicious use of SetWindowsHookEx
  PID:3144

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:\Program Files (x86)\Windowlet\wletins.exe

Filesize
42KB

MD5
06eadcee6bac62610c7156bbcc0c21e6

SHA1
add010da57e22cf292b534a864908277e49dd2dc

SHA256
034d48e5b49f54e90a468860301ea14880d1c97ea79f138c054a8c50c37e0e8e

SHA512
69088d2f8adff9fcfe0e2123d51f92c019816ff9bb945b528a7bf695474cc705cfc7e0805a85889d761962aae685309f95404e662d65a0eb072f7ffdc7c07fa5

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C:\Users\Admin\AppData\Local\Temp\nsb496E.tmp\System.dll

Filesize
11KB

MD5
00a0194c20ee912257df53bfe258ee4a

SHA1
d7b4e319bc5119024690dc8230b9cc919b1b86b2

SHA256
dc4da2ccadb11099076926b02764b2b44ad8f97cd32337421a4cc21a3f5448f3

SHA512
3b38a2c17996c3b77ebf7b858a6c37415615e756792132878d8eddbd13cb06710b7da0e8b58104768f8e475fc93e8b44b3b1ab6f70ddf52edee111aaf5ef5667

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads