7b9d33154d4b49d5fd7dc8732e78733cd47bff2ded5e288b3b05fa92227032b6

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
11/10/2022, 16:01

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General

Target

7b9d33154d4b49d5fd7dc8732e78733cd47bff2ded5e288b3b05fa92227032b6.exe
Size

60KB
MD5

62117926d350d9355f6c92b601dfde90
SHA1

63bd0a9b3039c0939682e2a23bbae706251a9488
SHA256

7b9d33154d4b49d5fd7dc8732e78733cd47bff2ded5e288b3b05fa92227032b6
SHA512

31b0c85fecf32437bc9ca76466795cd0c71790e6f25a9499a1fa94b8b243dc16d04f96b1e122dfbc48e636bb1687ba9e41879f3c98069ed3a8f400346fd08751
SSDEEP

768:C7gcuFkfLyZsufzPnZOJOOkQn1kToq7yQuJ4azKb//rS/S4:uopr1Q1kTouyQVuk/TSV

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1180	nyrtuc.exe

Deletes itself 1 IoCs

pid	Process
112	cmd.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\nyrtuc.exe	7b9d33154d4b49d5fd7dc8732e78733cd47bff2ded5e288b3b05fa92227032b6.exe
File opened for modification	C:\Windows\nyrtuc.exe	7b9d33154d4b49d5fd7dc8732e78733cd47bff2ded5e288b3b05fa92227032b6.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 AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1060	7b9d33154d4b49d5fd7dc8732e78733cd47bff2ded5e288b3b05fa92227032b6.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1060 wrote to memory of 112	1060	7b9d33154d4b49d5fd7dc8732e78733cd47bff2ded5e288b3b05fa92227032b6.exe	28
PID 1060 wrote to memory of 112	1060	7b9d33154d4b49d5fd7dc8732e78733cd47bff2ded5e288b3b05fa92227032b6.exe	28
PID 1060 wrote to memory of 112	1060	7b9d33154d4b49d5fd7dc8732e78733cd47bff2ded5e288b3b05fa92227032b6.exe	28
PID 1060 wrote to memory of 112	1060	7b9d33154d4b49d5fd7dc8732e78733cd47bff2ded5e288b3b05fa92227032b6.exe	28

C:\Users\Admin\AppData\Local\Temp\7b9d33154d4b49d5fd7dc8732e78733cd47bff2ded5e288b3b05fa92227032b6.exe
"C:\Users\Admin\AppData\Local\Temp\7b9d33154d4b49d5fd7dc8732e78733cd47bff2ded5e288b3b05fa92227032b6.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1060
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\7B9D33~1.EXE > nul
  2⤵
  - Deletes itself
  PID:112

C:\Windows\nyrtuc.exe
C:\Windows\nyrtuc.exe
1⤵
- Executes dropped EXE
PID:1180

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:\Windows\nyrtuc.exe

Filesize
60KB

MD5
62117926d350d9355f6c92b601dfde90

SHA1
63bd0a9b3039c0939682e2a23bbae706251a9488

SHA256
7b9d33154d4b49d5fd7dc8732e78733cd47bff2ded5e288b3b05fa92227032b6

SHA512
31b0c85fecf32437bc9ca76466795cd0c71790e6f25a9499a1fa94b8b243dc16d04f96b1e122dfbc48e636bb1687ba9e41879f3c98069ed3a8f400346fd08751

Download Submit
memory/1060-55-0x0000000074DC1000-0x0000000074DC3000-memory.dmp

Filesize
8KB

Download