a8e8030ed85a5bca1f9f163e5456f15a732fe411dd87fd567a7af393af61b6d4

Analysis

max time kernel
111s
max time network
98s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05-09-2024 12:25

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General

Target

8b3408dcc91ae969e00b8180dbfd8790N.exe
Size

66KB
MD5

8b3408dcc91ae969e00b8180dbfd8790
SHA1

8215572cd6b225a09cbbee4dfed6c7794c46f02a
SHA256

a8e8030ed85a5bca1f9f163e5456f15a732fe411dd87fd567a7af393af61b6d4
SHA512

9614bdf6b02566b5bb65552cba1b666f502fa6be4f3a4ca79bf1d67facc2d2535698992cc0360653689d8e4784944851f4ed49725462978fe13361d39cb03e34
SSDEEP

768:ZrItKyw5WHXfQIhIiIk9ecAaVPD96KyX6t:Zr3Z5IfQIR81ad5yX6t

Score

8^/10

defense_evasion discovery evasion

Malware Config

Signatures

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
2136	attrib.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	8b3408dcc91ae969e00b8180dbfd8790N.exe

Executes dropped EXE 1 IoCs

pid	Process
3804	mewhost.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 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\mewhost.exe	attrib.exe
File created	C:\Windows\Debug\mewhost.exe	8b3408dcc91ae969e00b8180dbfd8790N.exe
File opened for modification	C:\Windows\Debug\mewhost.exe	8b3408dcc91ae969e00b8180dbfd8790N.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 4 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	8b3408dcc91ae969e00b8180dbfd8790N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mewhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4812	8b3408dcc91ae969e00b8180dbfd8790N.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4812 wrote to memory of 2136	4812	8b3408dcc91ae969e00b8180dbfd8790N.exe	83
PID 4812 wrote to memory of 2136	4812	8b3408dcc91ae969e00b8180dbfd8790N.exe	83
PID 4812 wrote to memory of 2136	4812	8b3408dcc91ae969e00b8180dbfd8790N.exe	83
PID 4812 wrote to memory of 3672	4812	8b3408dcc91ae969e00b8180dbfd8790N.exe	89
PID 4812 wrote to memory of 3672	4812	8b3408dcc91ae969e00b8180dbfd8790N.exe	89
PID 4812 wrote to memory of 3672	4812	8b3408dcc91ae969e00b8180dbfd8790N.exe	89

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2136	attrib.exe

C:\Users\Admin\AppData\Local\Temp\8b3408dcc91ae969e00b8180dbfd8790N.exe
"C:\Users\Admin\AppData\Local\Temp\8b3408dcc91ae969e00b8180dbfd8790N.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4812
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\mewhost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Views/modifies file attributes
  PID:2136
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\8B3408~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3672

C:\Windows\Debug\mewhost.exe
C:\Windows\Debug\mewhost.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3804

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

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\mewhost.exe

Filesize
66KB

MD5
3505354381ca77fa3908a44e39ee77c1

SHA1
1bacf7722ecc37b89bd40c38530565913d6958f0

SHA256
fc4f0d53478984c6376ae30ea71f99eb2ff639f78105037922ef41b8b8561d4c

SHA512
e687f24b630b4fe572a829cc97f995406cf01285e22ec700ed13e1749238281d490165860c089cdd459af6bcf493f004b275a1adeb918919ee107685a6054153

Download Submit
memory/3804-5-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/3804-7-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/4812-0-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/4812-6-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads