8604d7e3e73975787c059090811e65d3848df8c6ef71fa3c397c612df32fc02e

Analysis

max time kernel
146s
max time network
138s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
13/02/2024, 21:32

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General

Target

8604d7e3e73975787c059090811e65d3848df8c6ef71fa3c397c612df32fc02e.exe
Size

196KB
MD5

5a786039fb830ec820547eb6f6c8a190
SHA1

eefca6baf0c90427504eba7f1d79f14a8cf4978f
SHA256

8604d7e3e73975787c059090811e65d3848df8c6ef71fa3c397c612df32fc02e
SHA512

5f8585a42c2d3b19937cff093ef8da4500656ba6be82ed87a2debda3ff2ac0547eb6936460083eb1d809d2e2712f79de2893a4583bd535fcbdf58bba78c2c68b
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOw:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXR

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2292	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1888	iuyhost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\iuyhost.exe	8604d7e3e73975787c059090811e65d3848df8c6ef71fa3c397c612df32fc02e.exe
File opened for modification	C:\Windows\Debug\iuyhost.exe	8604d7e3e73975787c059090811e65d3848df8c6ef71fa3c397c612df32fc02e.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	2136	8604d7e3e73975787c059090811e65d3848df8c6ef71fa3c397c612df32fc02e.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2136 wrote to memory of 2292	2136	8604d7e3e73975787c059090811e65d3848df8c6ef71fa3c397c612df32fc02e.exe	29
PID 2136 wrote to memory of 2292	2136	8604d7e3e73975787c059090811e65d3848df8c6ef71fa3c397c612df32fc02e.exe	29
PID 2136 wrote to memory of 2292	2136	8604d7e3e73975787c059090811e65d3848df8c6ef71fa3c397c612df32fc02e.exe	29
PID 2136 wrote to memory of 2292	2136	8604d7e3e73975787c059090811e65d3848df8c6ef71fa3c397c612df32fc02e.exe	29

C:\Users\Admin\AppData\Local\Temp\8604d7e3e73975787c059090811e65d3848df8c6ef71fa3c397c612df32fc02e.exe
"C:\Users\Admin\AppData\Local\Temp\8604d7e3e73975787c059090811e65d3848df8c6ef71fa3c397c612df32fc02e.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2136
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\8604D7~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2292

C:\Windows\Debug\iuyhost.exe
C:\Windows\Debug\iuyhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:1888

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
196KB

MD5
104df88b32756c1403a128273689ffe1

SHA1
ccef03aeceb037a6f10369f61fae030bf79b3746

SHA256
f132fc409c7932eea2cd8f51bb3999f342306a05e1df25e68bd951ed68e106d9

SHA512
9895dc9f0870a61028fc1d2dddbd74d7d92f386c33088412d6a79ba5803bc9fd00b2b9d9ff98656a1c05324b2dd3061e5b47f4402699937918a8d0baca00a327

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