aaec0141ae3ee8896d665c083bd0f77087b93d83261bc9edd4c7395459be001f

Analysis

max time kernel
110s
max time network
94s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
04/10/2024, 17:33

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General

Target

aaec0141ae3ee8896d665c083bd0f77087b93d83261bc9edd4c7395459be001fN.exe
Size

61KB
MD5

dbb39cbcea841c501055acbfe7200160
SHA1

d46a0637c7f1981abed5da1ddee6700ef3718657
SHA256

aaec0141ae3ee8896d665c083bd0f77087b93d83261bc9edd4c7395459be001f
SHA512

e02e28e0ea09293beb9f2ae731b9c2109c052bd8030fd696ecb4b787eb245ef6a2d6fd6e5a6dfde7f8b69bff97d0ee31f6825bda7e0bd24482788fffbfa9399d
SSDEEP

1536:EvQoLHjw2iWPKMvw71sMLyXubeee5gzzzt:Ev5Ls27BIJsMLyXuD

Score

7^/10

defense_evasion discovery

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2316	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2840	iuyhost.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\iuyhost.exe	aaec0141ae3ee8896d665c083bd0f77087b93d83261bc9edd4c7395459be001fN.exe
File opened for modification	C:\Windows\Debug\iuyhost.exe	aaec0141ae3ee8896d665c083bd0f77087b93d83261bc9edd4c7395459be001fN.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aaec0141ae3ee8896d665c083bd0f77087b93d83261bc9edd4c7395459be001fN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iuyhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

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	2880	aaec0141ae3ee8896d665c083bd0f77087b93d83261bc9edd4c7395459be001fN.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2880 wrote to memory of 2316	2880	aaec0141ae3ee8896d665c083bd0f77087b93d83261bc9edd4c7395459be001fN.exe	31
PID 2880 wrote to memory of 2316	2880	aaec0141ae3ee8896d665c083bd0f77087b93d83261bc9edd4c7395459be001fN.exe	31
PID 2880 wrote to memory of 2316	2880	aaec0141ae3ee8896d665c083bd0f77087b93d83261bc9edd4c7395459be001fN.exe	31
PID 2880 wrote to memory of 2316	2880	aaec0141ae3ee8896d665c083bd0f77087b93d83261bc9edd4c7395459be001fN.exe	31

C:\Users\Admin\AppData\Local\Temp\aaec0141ae3ee8896d665c083bd0f77087b93d83261bc9edd4c7395459be001fN.exe
"C:\Users\Admin\AppData\Local\Temp\aaec0141ae3ee8896d665c083bd0f77087b93d83261bc9edd4c7395459be001fN.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2880
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\AAEC01~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2316

C:\Windows\Debug\iuyhost.exe
C:\Windows\Debug\iuyhost.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:2840

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\debug\iuyhost.exe

Filesize
61KB

MD5
a72aa0f167e17996cc8a4d2ab302d5b4

SHA1
88dd4cd7f39998e7dcfc61f180d2d8edcc795f2e

SHA256
6ad68613f72adbb7507d0938375487f7136fba935297232c40ab11f7ee059858

SHA512
9660e1b3ada7111a7dc56ebcc389f9c73b1e440f165657f3ef25c81a31f050175e71c6b30a2ec5aecf47acb50204d8508ee123e733dc167cbb0b874a5f88cb32

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