d6639c9cf43e19e53fab1b9679d57eee960b6cee5efd017b37791feaadbdbf1c

Analysis

max time kernel
141s
max time network
129s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
20-09-2023 18:25

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General

Target

d6639c9cf43e19e53fab1b9679d57eee960b6cee5efd017b37791feaadbdbf1c.exe
Size

198KB
MD5

fc99c66291a91cf310e8dc810274bdf0
SHA1

004fbdc9c2f0fad57a98f1a83687524ace50aa0d
SHA256

d6639c9cf43e19e53fab1b9679d57eee960b6cee5efd017b37791feaadbdbf1c
SHA512

f75f7c8408b2ebe8a78a032529c039d426ad4550c3cba47a0f9aa499daa679e6662969a3b77a0efbd1adebd8b11c59081ddab962db115eedbd2c6c3402b92573
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOf:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXa

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2644	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
3000	iuyhost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\iuyhost.exe	d6639c9cf43e19e53fab1b9679d57eee960b6cee5efd017b37791feaadbdbf1c.exe
File created	C:\Windows\Debug\iuyhost.exe	d6639c9cf43e19e53fab1b9679d57eee960b6cee5efd017b37791feaadbdbf1c.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	iuyhost.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	iuyhost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2692	d6639c9cf43e19e53fab1b9679d57eee960b6cee5efd017b37791feaadbdbf1c.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2692 wrote to memory of 2644	2692	d6639c9cf43e19e53fab1b9679d57eee960b6cee5efd017b37791feaadbdbf1c.exe	29
PID 2692 wrote to memory of 2644	2692	d6639c9cf43e19e53fab1b9679d57eee960b6cee5efd017b37791feaadbdbf1c.exe	29
PID 2692 wrote to memory of 2644	2692	d6639c9cf43e19e53fab1b9679d57eee960b6cee5efd017b37791feaadbdbf1c.exe	29
PID 2692 wrote to memory of 2644	2692	d6639c9cf43e19e53fab1b9679d57eee960b6cee5efd017b37791feaadbdbf1c.exe	29

C:\Users\Admin\AppData\Local\Temp\d6639c9cf43e19e53fab1b9679d57eee960b6cee5efd017b37791feaadbdbf1c.exe
"C:\Users\Admin\AppData\Local\Temp\d6639c9cf43e19e53fab1b9679d57eee960b6cee5efd017b37791feaadbdbf1c.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2692
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\D6639C~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2644

C:\Windows\Debug\iuyhost.exe
C:\Windows\Debug\iuyhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:3000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\Debug\iuyhost.exe

Filesize
198KB

MD5
c7e65f3b27bb43291fa814a854af7ae7

SHA1
add502957d62f88c1f058dcf6abb90053e025285

SHA256
b58ae5e411f467b7724408aaa219a78707f1c7ae6287041ee68aa591979a4568

SHA512
bbbdd8e90580f60fdc4b0ba42f4dcc00a80df033dc237654dbfb14d971730f1b5506e9d4250bd47ded3e669ab98b41dbce0eb3c8126e3390a55fd4fb9499b931

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C:\Windows\debug\iuyhost.exe

Filesize
198KB

MD5
c7e65f3b27bb43291fa814a854af7ae7

SHA1
add502957d62f88c1f058dcf6abb90053e025285

SHA256
b58ae5e411f467b7724408aaa219a78707f1c7ae6287041ee68aa591979a4568

SHA512
bbbdd8e90580f60fdc4b0ba42f4dcc00a80df033dc237654dbfb14d971730f1b5506e9d4250bd47ded3e669ab98b41dbce0eb3c8126e3390a55fd4fb9499b931

Download Submit