a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899

Analysis

max time kernel
141s
max time network
131s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22/04/2024, 21:14

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General

Target

a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe
Size

198KB
MD5

101dd1992cd572375f6a8c3c2b1f9536
SHA1

f516b6e64a3d6f82d598ccdb4ad663698483ac47
SHA256

a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899
SHA512

b5460494e799ff7b3d5506eaa27a42cde14fb5f230ec1566aee53e52d4c938edd6a4523e20ccec8ca6dfce5961087141fe2a8ae75917f566de821767379a432a
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOF:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXg

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2564	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1668	iuyhost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\iuyhost.exe	a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe
File created	C:\Windows\Debug\iuyhost.exe	a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.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	1760	a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1760 wrote to memory of 2564	1760	a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe	29
PID 1760 wrote to memory of 2564	1760	a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe	29
PID 1760 wrote to memory of 2564	1760	a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe	29
PID 1760 wrote to memory of 2564	1760	a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe	29

C:\Users\Admin\AppData\Local\Temp\a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe
"C:\Users\Admin\AppData\Local\Temp\a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1760
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\A3AE58~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2564

C:\Windows\Debug\iuyhost.exe
C:\Windows\Debug\iuyhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:1668

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
72d2c2514e64f441c977f0448c7f25b0

SHA1
f602272200986efc623b842122651737b336d586

SHA256
59fd101c0e9b3cb7b09cf7f5e39840e999020d69e41b39c8a0cb662334504948

SHA512
843ca845a8e2c1580304f6d8d8b51b659306baf276e794bd71bf05b71200f2f992a18dcc83b9cd819095ff213c619afbe1d10b9326c4471daadc378819170e65

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