10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
21/04/2024, 18:47

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General

Target

10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe
Size

102KB
MD5

1fee2a8c022416cf800a9b48ce879f7b
SHA1

3dc5f2f5edaf694bdf5fe5dec96b51b2f26609f1
SHA256

10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3
SHA512

9a835e1fb1bce45cd4f7d465cebc335430aa16c06bccd9b4300a67f384863be2b6353fef5d52bf3fdf0e69466b679821fb37fa47f48af57b47780c165d74d1eb
SSDEEP

1536:lDcfLfIb5EpvuzgyXVdtnfHNWnnn6maaaBrrrmQOvvvM:lD2LTZuzgyXVd1veaaaz

Score

9^/10

evasion

Malware Config

Signatures

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

resource	yara_rule
behavioral2/memory/496-0-0x0000000000400000-0x0000000000411000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000300000001e97c-3.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/496-5-0x0000000000400000-0x0000000000411000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/4980-6-0x0000000000400000-0x0000000000411000-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
4620	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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe

Executes dropped EXE 1 IoCs

pid	Process
4980	rgkhost.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Debug\rgkhost.exe	10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe
File opened for modification	C:\Windows\Debug\rgkhost.exe	10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.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	496	10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 496 wrote to memory of 4620	496	10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe	86
PID 496 wrote to memory of 4620	496	10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe	86
PID 496 wrote to memory of 4620	496	10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe	86
PID 496 wrote to memory of 4828	496	10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe	90
PID 496 wrote to memory of 4828	496	10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe	90
PID 496 wrote to memory of 4828	496	10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe	90

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4620	attrib.exe

C:\Users\Admin\AppData\Local\Temp\10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe
"C:\Users\Admin\AppData\Local\Temp\10dfd1f7378c8a904b09564b07b62e86381378e73ca7679b7f1c9da678dc36b3.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:496
- 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:4620
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\10DFD1~1.EXE > nul
  2⤵
  PID:4828

C:\Windows\Debug\rgkhost.exe
C:\Windows\Debug\rgkhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:4980

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
102KB

MD5
d9bac8cc29e0007cddb94a567c83cf67

SHA1
cc537c064cd3a650eb81916568ec00cdac49803d

SHA256
3806f42effd5ae30abce69404c6703f4d97c120b80338adfc477bf86a085c2d0

SHA512
e0ebdbb8bd0a94d9376f98a77553746dbfb9cd2dd317a33076ee3082011ccdeb1885d228459a84414922b7b8fe1ff64c1d176f3f34a91d67075ceb9d380c18db

Download Submit
memory/496-0-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/496-5-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/4980-6-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads