51b3773145652b5d559396a08e1282a3a1d92d4df473f774d61791386fca0598

Analysis

max time kernel
92s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22/11/2024, 03:27

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General

Target
AES-NI.exe
Size 999KB
Sample241122-dz7tmazlan
SHA256 4142ff4667f5b9986888bdcb2a727db6a767f78fe1d5d4ae3346365a1d70eb76
MD5 83e824c998f321a9179efc5c2cd0a118
SHA1 16b84004778505afbcc1032d1325c9bed8679b79
SHA512 d1c9fdb653d6b028c16a9d82895b7f03b6f96aecc802ab5104d6a762091e71502e407feea3d3d64f19b9f7c2888b1fb2b1dd5f2909b6e29414d4e4a78b56917b
SSDEEP 24576:xMhc8sFdkS6BEeL8xYSCy3vIyzlueaBLxGLJe3:Ghc8sFB6WeIYSPAyUHxGLJe3
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

discovery upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2736	svchost.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ipinfo.io
6	ipinfo.io

Drops file in System32 directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\D73CE810F817D372CC78C5824C36E338	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751	svchost.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\state.tmp	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\D73CE810F817D372CC78C5824C36E338	svchost.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2736-2-0x0000000004A00000-0x0000000004BC3000-memory.dmp	upx
behavioral2/memory/2736-5-0x0000000004A00000-0x0000000004BC3000-memory.dmp	upx
behavioral2/memory/2736-6-0x0000000004A00000-0x0000000004BC3000-memory.dmp	upx
behavioral2/memory/2736-4-0x0000000004A00000-0x0000000004BC3000-memory.dmp	upx
behavioral2/memory/2736-15-0x0000000004A00000-0x0000000004BC3000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 2 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	AES-NI.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4916	AES-NI.exe
4916	AES-NI.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4916	AES-NI.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 4916 wrote to memory of 2736	4916	AES-NI.exe	83

C:\Users\Admin\AppData\Local\Temp\AES-NI.exe
"C:\Users\Admin\AppData\Local\Temp\AES-NI.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4916
- C:\Windows\SysWOW64\svchost.exe
  "C:\Windows\SysWOW64\svchost.exe"
  2⤵
  - Deletes itself
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  PID:2736

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2736-0-0x0000000001400000-0x00000000014FE000-memory.dmp

Download

memory/2736-1-0x0000000001400000-0x00000000014FE000-memory.dmp

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memory/2736-3-0x0000000001400000-0x00000000014FE000-memory.dmp

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memory/2736-2-0x0000000004A00000-0x0000000004BC3000-memory.dmp

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memory/2736-5-0x0000000004A00000-0x0000000004BC3000-memory.dmp

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memory/2736-6-0x0000000004A00000-0x0000000004BC3000-memory.dmp

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memory/2736-4-0x0000000004A00000-0x0000000004BC3000-memory.dmp

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memory/2736-14-0x0000000001400000-0x00000000014FE000-memory.dmp

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memory/2736-15-0x0000000004A00000-0x0000000004BC3000-memory.dmp

Download