1b2484d5608e897bf682bd589521e9f64524c640649f37b6253ae27bb1ea2a07

Analysis

max time kernel
143s
max time network
144s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
06-03-2024 06:39

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General

Target

1b2484d5608e897bf682bd589521e9f64524c640649f37b6253ae27bb1ea2a07.exe
Size

197KB
MD5

69d796815b29b2b88ac5efce8949d86b
SHA1

4a9d40084dd68ac2e5b70b9abc9d2e5191096768
SHA256

1b2484d5608e897bf682bd589521e9f64524c640649f37b6253ae27bb1ea2a07
SHA512

8b49120e5b4a02211752f112b2e75f24ab4c1d5b562d8225b6e344063cc128386b11d35535e61ada9601593f7416b206a51369c2453ed1082d3cfbf8b07ba177
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOl:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXX4

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2912	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1288	iuyhost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\iuyhost.exe	1b2484d5608e897bf682bd589521e9f64524c640649f37b6253ae27bb1ea2a07.exe
File opened for modification	C:\Windows\Debug\iuyhost.exe	1b2484d5608e897bf682bd589521e9f64524c640649f37b6253ae27bb1ea2a07.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	2036	1b2484d5608e897bf682bd589521e9f64524c640649f37b6253ae27bb1ea2a07.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 2912	2036	1b2484d5608e897bf682bd589521e9f64524c640649f37b6253ae27bb1ea2a07.exe	29
PID 2036 wrote to memory of 2912	2036	1b2484d5608e897bf682bd589521e9f64524c640649f37b6253ae27bb1ea2a07.exe	29
PID 2036 wrote to memory of 2912	2036	1b2484d5608e897bf682bd589521e9f64524c640649f37b6253ae27bb1ea2a07.exe	29
PID 2036 wrote to memory of 2912	2036	1b2484d5608e897bf682bd589521e9f64524c640649f37b6253ae27bb1ea2a07.exe	29

C:\Users\Admin\AppData\Local\Temp\1b2484d5608e897bf682bd589521e9f64524c640649f37b6253ae27bb1ea2a07.exe
"C:\Users\Admin\AppData\Local\Temp\1b2484d5608e897bf682bd589521e9f64524c640649f37b6253ae27bb1ea2a07.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\1B2484~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2912

C:\Windows\Debug\iuyhost.exe
C:\Windows\Debug\iuyhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:1288

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
eb2aadcd67a5a8a05f068af360e8d607

SHA1
88f172aa800c3f9a2d5b5e1e50e04932dd43994b

SHA256
6ab18b92c0064155ca5e0e032f3f5ca7e181bde7677d5f54184e86f4bc99bc3e

SHA512
56401c146269f261e7b65e01bfa9981c2962e915ba919a3f8517cb2de6eae20b8dd44bec8dae52d942d5348d9e29ffb37cef33fc68eb8a9ac2ef80aba107d31e

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