a6a18e581d0297e2438033aa2a311248a872701fa9397c014f553effcb6ffbf5

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
29-04-2024 00:46

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General

Target

a6a18e581d0297e2438033aa2a311248a872701fa9397c014f553effcb6ffbf5.exe
Size

71KB
MD5

52a500923432a84afc11cbec5e7efb06
SHA1

f72092b3422dca282e4ff89606870a3cf2b2acf2
SHA256

a6a18e581d0297e2438033aa2a311248a872701fa9397c014f553effcb6ffbf5
SHA512

967bf358b91eeed8205bf2984cd810e4d1ce8d0f4232154ff9f9ef03fe9ab2ec7de1f5bdb3603b10a43e433934233fa66498ceda4118850cadd4bb4a5a37ea9f
SSDEEP

768:ZrItKyw5WHXfQmjIiIk9ecAx7pP1EPU96MyXPdtldE9bIIIwjkB+++G:Zr3Z5IfQmv81x7pP1r3yXPdtnyjo+++G

Score

9^/10

evasion

Malware Config

Signatures

Detects Windows executables referencing non-Windows User-Agents 4 IoCs

resource	yara_rule
behavioral2/memory/3284-0-0x0000000000400000-0x0000000000411000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000700000002329a-3.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/3108-5-0x0000000000400000-0x0000000000411000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/3108-6-0x0000000000400000-0x0000000000411000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

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
1788	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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	a6a18e581d0297e2438033aa2a311248a872701fa9397c014f553effcb6ffbf5.exe

Executes dropped EXE 1 IoCs

pid	Process
3108	rgkhost.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Debug\rgkhost.exe	a6a18e581d0297e2438033aa2a311248a872701fa9397c014f553effcb6ffbf5.exe
File opened for modification	C:\Windows\Debug\rgkhost.exe	a6a18e581d0297e2438033aa2a311248a872701fa9397c014f553effcb6ffbf5.exe
File opened for modification	C:\Windows\Debug\rgkhost.exe	attrib.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	3284	a6a18e581d0297e2438033aa2a311248a872701fa9397c014f553effcb6ffbf5.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3284 wrote to memory of 1788	3284	a6a18e581d0297e2438033aa2a311248a872701fa9397c014f553effcb6ffbf5.exe	81
PID 3284 wrote to memory of 1788	3284	a6a18e581d0297e2438033aa2a311248a872701fa9397c014f553effcb6ffbf5.exe	81
PID 3284 wrote to memory of 1788	3284	a6a18e581d0297e2438033aa2a311248a872701fa9397c014f553effcb6ffbf5.exe	81
PID 3284 wrote to memory of 4048	3284	a6a18e581d0297e2438033aa2a311248a872701fa9397c014f553effcb6ffbf5.exe	87
PID 3284 wrote to memory of 4048	3284	a6a18e581d0297e2438033aa2a311248a872701fa9397c014f553effcb6ffbf5.exe	87
PID 3284 wrote to memory of 4048	3284	a6a18e581d0297e2438033aa2a311248a872701fa9397c014f553effcb6ffbf5.exe	87

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1788	attrib.exe

C:\Users\Admin\AppData\Local\Temp\a6a18e581d0297e2438033aa2a311248a872701fa9397c014f553effcb6ffbf5.exe
"C:\Users\Admin\AppData\Local\Temp\a6a18e581d0297e2438033aa2a311248a872701fa9397c014f553effcb6ffbf5.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3284
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\rgkhost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - Views/modifies file attributes
  PID:1788
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\A6A18E~1.EXE > nul
  2⤵
  PID:4048

C:\Windows\Debug\rgkhost.exe
C:\Windows\Debug\rgkhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:3108

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

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\debug\rgkhost.exe

Filesize
71KB

MD5
676c0697c4fd2c0dc3d1ad2991215d0a

SHA1
4b5e8512df2f732c5252e62fc4e2b7478bcfa1ed

SHA256
1d1a43b37a9bfe76dd13f6706bbb1d452c92ef1fa74c5d2d2290b11df79a04e8

SHA512
5cb6263ca986a51155ce00610670e03df416a93d0b13ec73d6a9a70ceef1fad2320517efc418d2b53584977862da231f5ae1d13ef17e1c52e6e1750ec1187ee7

Download Submit
memory/3108-5-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/3108-6-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/3284-0-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads