e0d2da2ceba0071533d82c3e743e77362e9de1e85c70720b86486e8fd09efc10

General

Target

e0d2da2ceba0071533d82c3e743e77362e9de1e85c70720b86486e8fd09efc10.exe
Size

87KB
MD5

c98d4bb10a05a7f79dca74c1315b3851
SHA1

6ce167185e1e551fcf7d95f9df131a4d1990010c
SHA256

e0d2da2ceba0071533d82c3e743e77362e9de1e85c70720b86486e8fd09efc10
SHA512

c9d6cf9cfc9e8a547504dba9d2f653ef33a7bf46b0517d390692301a7fef37d2377c6d3ae1a983fcf5ab9b4929f64d48d257ee5308e68b44d1bf0bf8763e2557
SSDEEP

1536:yr3Z5IfQmv81a7pP1xF3yX2tM/jTEwwwEiiiixMkMMMMz:WJOfQm01q9X3yX2q/jTJw

Score

8^/10

defense_evasion discovery evasion upx

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
1636	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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	e0d2da2ceba0071533d82c3e743e77362e9de1e85c70720b86486e8fd09efc10.exe

Executes dropped EXE 1 IoCs

pid	Process
4780	mewhost.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1932-0-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral2/files/0x000800000002345a-4.dat	upx
behavioral2/memory/1932-5-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral2/memory/4780-6-0x0000000000400000-0x0000000000416000-memory.dmp	upx

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	e0d2da2ceba0071533d82c3e743e77362e9de1e85c70720b86486e8fd09efc10.exe
File opened for modification	C:\Windows\Debug\mewhost.exe	e0d2da2ceba0071533d82c3e743e77362e9de1e85c70720b86486e8fd09efc10.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	e0d2da2ceba0071533d82c3e743e77362e9de1e85c70720b86486e8fd09efc10.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	1932	e0d2da2ceba0071533d82c3e743e77362e9de1e85c70720b86486e8fd09efc10.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1932 wrote to memory of 1636	1932	e0d2da2ceba0071533d82c3e743e77362e9de1e85c70720b86486e8fd09efc10.exe	83
PID 1932 wrote to memory of 1636	1932	e0d2da2ceba0071533d82c3e743e77362e9de1e85c70720b86486e8fd09efc10.exe	83
PID 1932 wrote to memory of 1636	1932	e0d2da2ceba0071533d82c3e743e77362e9de1e85c70720b86486e8fd09efc10.exe	83
PID 1932 wrote to memory of 1228	1932	e0d2da2ceba0071533d82c3e743e77362e9de1e85c70720b86486e8fd09efc10.exe	89
PID 1932 wrote to memory of 1228	1932	e0d2da2ceba0071533d82c3e743e77362e9de1e85c70720b86486e8fd09efc10.exe	89
PID 1932 wrote to memory of 1228	1932	e0d2da2ceba0071533d82c3e743e77362e9de1e85c70720b86486e8fd09efc10.exe	89

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1636	attrib.exe

C:\Users\Admin\AppData\Local\Temp\e0d2da2ceba0071533d82c3e743e77362e9de1e85c70720b86486e8fd09efc10.exe
"C:\Users\Admin\AppData\Local\Temp\e0d2da2ceba0071533d82c3e743e77362e9de1e85c70720b86486e8fd09efc10.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:1932
- 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:1636
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\E0D2DA~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1228

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:4780

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
87KB

MD5
1bbe944c509c2628acf718242d487344

SHA1
c6b0efe9b280de45370ce9e5784f3b30d2fb9883

SHA256
89726685bc513e9618d39104b3477757fbe50d778b65e38543d825972f9aec02

SHA512
0cdafdffad446291b91f6e95f322de39e1b7d01d9dae35969450b14832680f54a59ec48e5105c8e9d4b8a8ee4ec34994ebc467144b7f868470e6841d45a2c37d

Download Submit
memory/1932-0-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1932-5-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/4780-6-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads