3e2b6e96f1f0e832f6a4ed4057e23536d4db4b38b3c4a023c59c634876bf4dac

Analysis

max time kernel
92s
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
26-12-2023 14:29

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General

Target

75a381370a80cb157ac4b79c8764ad55.exe
Size

142KB
MD5

75a381370a80cb157ac4b79c8764ad55
SHA1

3e12e5af7f47513e59cabaef2252876f7cb2a936
SHA256

3e2b6e96f1f0e832f6a4ed4057e23536d4db4b38b3c4a023c59c634876bf4dac
SHA512

73160127dabcfd5a7259053113ff21ac91b550e6b79dbb0480996bdf545f76b6a822a86d0291aa0a04f3c6b6f7adb76ee033280ded6303b1c8fac4d49f0981a3
SSDEEP

3072:JnOn7t7XpdpCCTg/sxFgJKeqgKJ+BChClpD0nhltXY+CEMW6:JKpdcCrTdgKglpgntY+CP

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4976	downloadmr.exe

Loads dropped DLL 2 IoCs

pid	Process
1060	75a381370a80cb157ac4b79c8764ad55.exe
1060	75a381370a80cb157ac4b79c8764ad55.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
4976	downloadmr.exe
4976	downloadmr.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1060 wrote to memory of 4976	1060	75a381370a80cb157ac4b79c8764ad55.exe	87
PID 1060 wrote to memory of 4976	1060	75a381370a80cb157ac4b79c8764ad55.exe	87
PID 1060 wrote to memory of 4976	1060	75a381370a80cb157ac4b79c8764ad55.exe	87

C:\Users\Admin\AppData\Local\Temp\75a381370a80cb157ac4b79c8764ad55.exe
"C:\Users\Admin\AppData\Local\Temp\75a381370a80cb157ac4b79c8764ad55.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1060
- C:\Users\Admin\AppData\Local\Temp\nsk548A.tmp\downloadmr.exe
  C:\Users\Admin\AppData\Local\Temp\nsk548A.tmp\downloadmr.exe /u4f96c0af-ae48-469a-a08c-2bb95bc06f2f /e2834668
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:4976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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\nsk548A.tmp\System.dll

Filesize
21KB

MD5
5ebc73650256e9c8ddbcda231db829a1

SHA1
988d4535e18754ab2a6248abae96c5697d7dbcd5

SHA256
1eaa543842df7795404184e8892a1654b0773dbc9bd8b54c7fdb9e68f4355493

SHA512
b21266e76fc7263af982a1336a766e47ccf348ed56b305dbb09f03574c9b2a7309f12200e80d86f9a251381be6e87a41206447f11c51899cb31fba10da1d5270

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsk548A.tmp\downloadmr.exe

Filesize
122KB

MD5
da254a8488b60244654e1cf4d6796cf8

SHA1
23d06f4589786652a3a226b5012a5520a3d03452

SHA256
6d3b82a7ad74a1e88ae4d0f9176082130f1558fb3ff42a8b45ca8b80445efc2d

SHA512
d311f90ad65441f6c7ae55220c2c3f117aa7601d083e6847e1b58b96c3c332d68a25d445310818396dc88678fb9ec5356f35a04a392c3d23746a2231e14b0a2e

Download Submit
memory/1060-24-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4976-13-0x0000000074D30000-0x00000000752E1000-memory.dmp

Filesize
5.7MB

Download
memory/4976-14-0x0000000074D30000-0x00000000752E1000-memory.dmp

Filesize
5.7MB

Download
memory/4976-15-0x0000000001020000-0x0000000001030000-memory.dmp

Filesize
64KB

Download
memory/4976-17-0x0000000001020000-0x0000000001030000-memory.dmp

Filesize
64KB

Download
memory/4976-16-0x0000000001020000-0x0000000001030000-memory.dmp

Filesize
64KB

Download
memory/4976-18-0x0000000001020000-0x0000000001030000-memory.dmp

Filesize
64KB

Download
memory/4976-20-0x0000000074D30000-0x00000000752E1000-memory.dmp

Filesize
5.7MB

Download