16c1391930679d341fea08b889d4dbb3a69d34306cc444b2a628912d10a612c6

Analysis

max time kernel
92s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21-11-2024 11:50

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General

Target

Ruth.exe
Size

12KB
MD5

58f05e9519b3bd825fd6af936f4b2aed
SHA1

be9b785edf541ee1281a39931f7958c031cdccd7
SHA256

16c1391930679d341fea08b889d4dbb3a69d34306cc444b2a628912d10a612c6
SHA512

b62875a2899dc40765b63fbee126e669e9bd287439b09470e5f3010d7b697d59b71ba41e0b680b265474e3826f2b60cb4bf65ec0a6376bb44b57d773fb827e96
SSDEEP

192:rTgOHx0lM4MAyRroVbp9+XfP7b3gKgpOywgglV6eIFlihu9nHV2DmOQKdQeHPyJt:l8kyuP7b3gHpzizIGUvSHd5aJ

Score

7^/10

discovery persistence upx

Malware Config

Signatures

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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	Ruth.exe

Executes dropped EXE 1 IoCs

pid	Process
4780	irun4.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ssate.exe = "C:\\Windows\\system32\\irun4.exe"	Ruth.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ssate.exe = "C:\\Windows\\system32\\irun4.exe"	irun4.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\irun4.exe	Ruth.exe
File opened for modification	C:\Windows\SysWOW64\irun4.exe	irun4.exe
File created	C:\Windows\SysWOW64\irun4.exe	irun4.exe
File opened for modification	C:\Windows\SysWOW64\irun4.exe	Ruth.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3584-0-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral2/files/0x000a000000023be6-5.dat	upx
behavioral2/memory/3584-10-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral2/memory/4780-12-0x0000000000400000-0x000000000040F000-memory.dmp	upx

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 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	Ruth.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	irun4.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3584 wrote to memory of 4780	3584	Ruth.exe	85
PID 3584 wrote to memory of 4780	3584	Ruth.exe	85
PID 3584 wrote to memory of 4780	3584	Ruth.exe	85

C:\Users\Admin\AppData\Local\Temp\Ruth.exe
"C:\Users\Admin\AppData\Local\Temp\Ruth.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3584
- C:\Windows\SysWOW64\irun4.exe
  "C:\Windows\system32\irun4.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  PID:4780

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

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\SysWOW64\irun4.exe

Filesize
12KB

MD5
58f05e9519b3bd825fd6af936f4b2aed

SHA1
be9b785edf541ee1281a39931f7958c031cdccd7

SHA256
16c1391930679d341fea08b889d4dbb3a69d34306cc444b2a628912d10a612c6

SHA512
b62875a2899dc40765b63fbee126e669e9bd287439b09470e5f3010d7b697d59b71ba41e0b680b265474e3826f2b60cb4bf65ec0a6376bb44b57d773fb827e96

Download Submit
memory/3584-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/3584-10-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/4780-12-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads