3172909c1e78a285676e68202502bff165b33af0bc56daa3a056ebea784f7a95

General

Target

d87c584792750d405ab939ad4db56a70N.exe
Size

75KB
MD5

d87c584792750d405ab939ad4db56a70
SHA1

f13a815a158af471d95cefacc77321dced50ab15
SHA256

3172909c1e78a285676e68202502bff165b33af0bc56daa3a056ebea784f7a95
SHA512

01d9443e3643ccac42ddd6794dde9982406a4dee47d1830b125cbcec1c5fa770b2930b38231a1e8c022d413fab6face034f50e565ea819a0fbc440446f35920e
SSDEEP

768:ZrItKyw5WHXfQmjIiIk9ecAx7pP1EPU96MyXPdtldE9bIIIwjkg:Zr3Z5IfQmv81x7pP1r3yXPdtnyjp

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
1996	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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	d87c584792750d405ab939ad4db56a70N.exe

Executes dropped EXE 1 IoCs

pid	Process
1260	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 created	C:\Windows\Debug\mewhost.exe	d87c584792750d405ab939ad4db56a70N.exe
File opened for modification	C:\Windows\Debug\mewhost.exe	d87c584792750d405ab939ad4db56a70N.exe
File opened for modification	C:\Windows\Debug\mewhost.exe	attrib.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	d87c584792750d405ab939ad4db56a70N.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

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	mewhost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	mewhost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4244	d87c584792750d405ab939ad4db56a70N.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4244 wrote to memory of 1996	4244	d87c584792750d405ab939ad4db56a70N.exe	84
PID 4244 wrote to memory of 1996	4244	d87c584792750d405ab939ad4db56a70N.exe	84
PID 4244 wrote to memory of 1996	4244	d87c584792750d405ab939ad4db56a70N.exe	84
PID 4244 wrote to memory of 2184	4244	d87c584792750d405ab939ad4db56a70N.exe	90
PID 4244 wrote to memory of 2184	4244	d87c584792750d405ab939ad4db56a70N.exe	90
PID 4244 wrote to memory of 2184	4244	d87c584792750d405ab939ad4db56a70N.exe	90

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1996	attrib.exe

C:\Users\Admin\AppData\Local\Temp\d87c584792750d405ab939ad4db56a70N.exe
"C:\Users\Admin\AppData\Local\Temp\d87c584792750d405ab939ad4db56a70N.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:4244
- 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:1996
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\D87C58~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2184

C:\Windows\Debug\mewhost.exe
C:\Windows\Debug\mewhost.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:1260

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

2

T1564

Hidden Files and Directories

2

T1564.001

Indicator Removal

1

T1070

File Deletion

1

T1070.004

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\debug\mewhost.exe

Filesize
75KB

MD5
93aa085853d21b8c98e301e93a93ab81

SHA1
26f86f4904bca2abd3525286b3b699577371a940

SHA256
9cebb46c788ba56b81fe246315d8f91a0c1b27383abbb07abdf0520f4d13d3ea

SHA512
4791ded84ec882f267240d9dfddb5f32b5a87a90fd2f1dded4326ae23d986c6280012cf451a30f27d94683c92706e9bd7c634315cb23c567e2c4b8e60d540e4a

Download Submit
memory/1260-6-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/4244-0-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/4244-5-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads