a28d8cc478bceeca24f3240c5715f4d4d85bd03cd6358e1427406d314a9552a9

Analysis

max time kernel
141s
max time network
124s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
28/03/2024, 02:58

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General

Target

a28d8cc478bceeca24f3240c5715f4d4d85bd03cd6358e1427406d314a9552a9.exe
Size

197KB
MD5

a771fb8837a6cd591c7242478c645444
SHA1

9a93a4a0bb783ef8a3f810cb577629ca71dff874
SHA256

a28d8cc478bceeca24f3240c5715f4d4d85bd03cd6358e1427406d314a9552a9
SHA512

1e42dbc96c2fc5f6b9eab7e50af4df3ab20b9f4c5e2df023dd7788f38db7b3d96237aa06d9719e03aefa5bf786d69e49eef093a1216fd7fc48e3b4a5edac6e5b
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOa:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXL

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
860	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2044	iuyhost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\iuyhost.exe	a28d8cc478bceeca24f3240c5715f4d4d85bd03cd6358e1427406d314a9552a9.exe
File opened for modification	C:\Windows\Debug\iuyhost.exe	a28d8cc478bceeca24f3240c5715f4d4d85bd03cd6358e1427406d314a9552a9.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	iuyhost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	iuyhost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	3040	a28d8cc478bceeca24f3240c5715f4d4d85bd03cd6358e1427406d314a9552a9.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 860	3040	a28d8cc478bceeca24f3240c5715f4d4d85bd03cd6358e1427406d314a9552a9.exe	29
PID 3040 wrote to memory of 860	3040	a28d8cc478bceeca24f3240c5715f4d4d85bd03cd6358e1427406d314a9552a9.exe	29
PID 3040 wrote to memory of 860	3040	a28d8cc478bceeca24f3240c5715f4d4d85bd03cd6358e1427406d314a9552a9.exe	29
PID 3040 wrote to memory of 860	3040	a28d8cc478bceeca24f3240c5715f4d4d85bd03cd6358e1427406d314a9552a9.exe	29

C:\Users\Admin\AppData\Local\Temp\a28d8cc478bceeca24f3240c5715f4d4d85bd03cd6358e1427406d314a9552a9.exe
"C:\Users\Admin\AppData\Local\Temp\a28d8cc478bceeca24f3240c5715f4d4d85bd03cd6358e1427406d314a9552a9.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\A28D8C~1.EXE > nul
  2⤵
  - Deletes itself
  PID:860

C:\Windows\Debug\iuyhost.exe
C:\Windows\Debug\iuyhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:2044

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
197KB

MD5
d4df12dc5fe7994f9bd0629ae2bc18cc

SHA1
415c9b08a12006d590506cd9d62de67b60fe563a

SHA256
8102536b36f63b58b3fab81d63ba6e407085155e2d236b9d9e70e7e8f8e2735c

SHA512
e96ead9ee3733cff0f8f9ac99a1f83d59b835a4d640027be0917fab45d03a16a61dbb0d5f3b41e87119407320cfbee0f78e3f2506f9343e545bac65550235528

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