2af13a10920dbcbc8868c84c0b37407051352c97e7891df2e0618f43661ca73c

Analysis

max time kernel
140s
max time network
124s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
28/04/2024, 19:41

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General

Target

2af13a10920dbcbc8868c84c0b37407051352c97e7891df2e0618f43661ca73c.exe
Size

54KB
MD5

4a66e06f397dc0ead3e3e81df49f4123
SHA1

72d5e902d80698667b1f0667f9aa57d2d0eaf7a3
SHA256

2af13a10920dbcbc8868c84c0b37407051352c97e7891df2e0618f43661ca73c
SHA512

c2fad8872322d54150d6e2a5a2acdc8ca1ba5250eef40683a4428454da422752097af05c4ce58c5483cbbce798688f947fe422908d3e7f79061b8f04d4e4ad1e
SSDEEP

1536:jvQoLHjw2iWPKMvw71sMLyXugRRRN7TTTgUUU+cccx:jv5Ls27BIJsMLyXui

Score

9^/10

Malware Config

Signatures

Detects Windows executables referencing non-Windows User-Agents 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000014120-2.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Deletes itself 1 IoCs

pid	Process
2316	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
944	iuyhost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\iuyhost.exe	2af13a10920dbcbc8868c84c0b37407051352c97e7891df2e0618f43661ca73c.exe
File opened for modification	C:\Windows\Debug\iuyhost.exe	2af13a10920dbcbc8868c84c0b37407051352c97e7891df2e0618f43661ca73c.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	2956	2af13a10920dbcbc8868c84c0b37407051352c97e7891df2e0618f43661ca73c.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2956 wrote to memory of 2316	2956	2af13a10920dbcbc8868c84c0b37407051352c97e7891df2e0618f43661ca73c.exe	29
PID 2956 wrote to memory of 2316	2956	2af13a10920dbcbc8868c84c0b37407051352c97e7891df2e0618f43661ca73c.exe	29
PID 2956 wrote to memory of 2316	2956	2af13a10920dbcbc8868c84c0b37407051352c97e7891df2e0618f43661ca73c.exe	29
PID 2956 wrote to memory of 2316	2956	2af13a10920dbcbc8868c84c0b37407051352c97e7891df2e0618f43661ca73c.exe	29

C:\Users\Admin\AppData\Local\Temp\2af13a10920dbcbc8868c84c0b37407051352c97e7891df2e0618f43661ca73c.exe
"C:\Users\Admin\AppData\Local\Temp\2af13a10920dbcbc8868c84c0b37407051352c97e7891df2e0618f43661ca73c.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2956
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\2AF13A~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2316

C:\Windows\Debug\iuyhost.exe
C:\Windows\Debug\iuyhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:944

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

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Downloads

C:\Windows\debug\iuyhost.exe

Filesize
54KB

MD5
81c8fe2c7aca63d4a7a9f702d55f69fe

SHA1
a4fa80ec7d42250e9afb89536c4ad60a51eb75d3

SHA256
0973120f906ec54784e425afbb9050666119db184311b0cf85c49005ed5cc24a

SHA512
0707bc7a4b51c2b04f80d7edf7b27f62e35499a5e30f283a4ed9fd84aafd5b10252277104d0bd04b2bad374f9feef55f5687fa7861c9cae344343ad73d1de050

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