fbf20dfcc0d52e063780ada97ffe029769dbcb4347e4b3c5a3166d2bcadd77ce

Analysis

max time kernel
370s
max time network
456s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
29/11/2022, 10:35

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General

Target

fbf20dfcc0d52e063780ada97ffe029769dbcb4347e4b3c5a3166d2bcadd77ce.exe
Size

428KB
MD5

e4c3cfd84caa550e6f7e92ddd8ac7b52
SHA1

2d2bee826656e2d582744598efe9d72334c0831b
SHA256

fbf20dfcc0d52e063780ada97ffe029769dbcb4347e4b3c5a3166d2bcadd77ce
SHA512

03b7af2670eafb867418c638316401b0c777cdd8343e631977e21194c6287aa5de98f8522237ea9e39c79c20813c76a00291c9b2806b2838e8838729cd6b3a02
SSDEEP

6144:zsaocyLCy4C96ZsuF8Yt06bpT761pGMhdjB7N/dxyPUdbof8BRylHyf7bepa2oh+:ztob+QuL06ZWpnjFJycRA8nyebeparh+

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1756	installer.exe

Loads dropped DLL 1 IoCs

pid	Process
5104	fbf20dfcc0d52e063780ada97ffe029769dbcb4347e4b3c5a3166d2bcadd77ce.exe

Drops desktop.ini file(s) 2 IoCs

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

Drops file in Windows directory 3 IoCs

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

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 5104 wrote to memory of 1756	5104	fbf20dfcc0d52e063780ada97ffe029769dbcb4347e4b3c5a3166d2bcadd77ce.exe	81
PID 5104 wrote to memory of 1756	5104	fbf20dfcc0d52e063780ada97ffe029769dbcb4347e4b3c5a3166d2bcadd77ce.exe	81

C:\Users\Admin\AppData\Local\Temp\fbf20dfcc0d52e063780ada97ffe029769dbcb4347e4b3c5a3166d2bcadd77ce.exe
"C:\Users\Admin\AppData\Local\Temp\fbf20dfcc0d52e063780ada97ffe029769dbcb4347e4b3c5a3166d2bcadd77ce.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:5104
- C:\Users\Admin\AppData\Local\Temp\nsk8C02.tmp\installer.exe
  C:\Users\Admin\AppData\Local\Temp\nsk8C02.tmp\installer.exe north.exe /dT132590155S /e10060591 /u50ae11c5-fa08-4f10-be2a-04b05bc06f2f
  2⤵
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Drops file in Windows directory
  PID:1756

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsk8C02.tmp\installer.exe

Filesize
175KB

MD5
c56f474df7c7234370c88cef5e334752

SHA1
ff7e59e76a0bbdef4243232786c0d86e9fbb22dd

SHA256
2e2e482bbf7a109f2d7cc37a9657715ef133900c4af3b6e90da2842ad12d869d

SHA512
79a56ef595b37009382e83fdb512ee9f57e13384060238d809f7d9564f85a2a3d5fd05d75a8de6c3851fe7ba80b7bd5936af4a345bc278cd42fa959f4ed52d6f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsk8C02.tmp\installer.exe

Filesize
175KB

MD5
c56f474df7c7234370c88cef5e334752

SHA1
ff7e59e76a0bbdef4243232786c0d86e9fbb22dd

SHA256
2e2e482bbf7a109f2d7cc37a9657715ef133900c4af3b6e90da2842ad12d869d

SHA512
79a56ef595b37009382e83fdb512ee9f57e13384060238d809f7d9564f85a2a3d5fd05d75a8de6c3851fe7ba80b7bd5936af4a345bc278cd42fa959f4ed52d6f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsk8C02.tmp\nsExec.dll

Filesize
8KB

MD5
249ae678f0dac4c625c6de6aca53823a

SHA1
6ac2b9e90e8445fed4c45c5dbf2d0227cd3b5201

SHA256
7298024a36310b7c4c112be87b61b62a0b1be493e2d5252a19e5e976daf674ce

SHA512
66e4081a40f3191bf28b810cf8411cb3c8c3e3ec5943e18d6672414fb5e7b4364f862cba44c9115c599ac90890ef02a773e254e7c979e930946bc52b0693aad7

Download Submit
memory/1756-136-0x00007FF89E3B0000-0x00007FF89EDE6000-memory.dmp

Filesize
10.2MB

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