52599d76fe2b8f6cdcf5a32a5e78374e16fb86969097c23c2f531b73eacb624d

Analysis

max time kernel
119s
max time network
121s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
01/10/2024, 01:36

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General

Target

52599d76fe2b8f6cdcf5a32a5e78374e16fb86969097c23c2f531b73eacb624dN.dll
Size

476KB
MD5

f5e86ffacb65dcda5e425a5235018bb0
SHA1

5350e5dc510ae2d395e96f036de57159d1a2c5f7
SHA256

52599d76fe2b8f6cdcf5a32a5e78374e16fb86969097c23c2f531b73eacb624d
SHA512

30edec9295eda52f53dff172c6fa6875d9cb192a10fd902b7070534dad0795a582a9286aa6fbaf4169464dcc610be36642493e122e962893503a4d477d66494a
SSDEEP

6144:TUw5etIDfEBJ1hel9AiYUdKsdyq1vR6sMr1X5r33fLRbhn7X5aX+pvQU2H:TUoetgIJ1hh0dhJgrJdvDU+T2

Score

8^/10

discovery persistence

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
14	3524	rundll32.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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	rundll32.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-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\52599d76fe2b8f6cdcf5a32a5e78374e16fb86969097c23c2f531b73eacb624dN.dll_xserve = "rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\52599d76fe2b8f6cdcf5a32a5e78374e16fb86969097c23c2f531b73eacb624dN.dll\",xserve"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\52599d76fe2b8f6cdcf5a32a5e78374e16fb86969097c23c2f531b73eacb624dN.dll = "rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\52599d76fe2b8f6cdcf5a32a5e78374e16fb86969097c23c2f531b73eacb624dN.dll\",watch"	rundll32.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 3 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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe
2300	rundll32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4888 wrote to memory of 2472	4888	rundll32.exe	89
PID 4888 wrote to memory of 2472	4888	rundll32.exe	89
PID 4888 wrote to memory of 2472	4888	rundll32.exe	89
PID 2472 wrote to memory of 2300	2472	rundll32.exe	90
PID 2472 wrote to memory of 2300	2472	rundll32.exe	90
PID 2472 wrote to memory of 2300	2472	rundll32.exe	90
PID 2472 wrote to memory of 3524	2472	rundll32.exe	91
PID 2472 wrote to memory of 3524	2472	rundll32.exe	91
PID 2472 wrote to memory of 3524	2472	rundll32.exe	91

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\52599d76fe2b8f6cdcf5a32a5e78374e16fb86969097c23c2f531b73eacb624dN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4888
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\52599d76fe2b8f6cdcf5a32a5e78374e16fb86969097c23c2f531b73eacb624dN.dll,#1
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2472
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\System32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\52599d76fe2b8f6cdcf5a32a5e78374e16fb86969097c23c2f531b73eacb624dN.dll",watch
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2300
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\System32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\52599d76fe2b8f6cdcf5a32a5e78374e16fb86969097c23c2f531b73eacb624dN.dll",xserve
    3⤵
    - Blocklisted process makes network request
    - System Location Discovery: System Language Discovery
    PID:3524

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4276,i,13995403245988825027,7033610968827661507,262144 --variations-seed-version --mojo-platform-channel-handle=4200 /prefetch:8
1⤵
PID:448

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

memory/2300-5-0x00000000023A0000-0x00000000024A0000-memory.dmp

Filesize
1024KB

Download
memory/2300-15-0x0000000074830000-0x0000000074937000-memory.dmp

Filesize
1.0MB

Download
memory/2472-0-0x0000000002990000-0x0000000002A90000-memory.dmp

Filesize
1024KB

Download
memory/2472-1-0x0000000074830000-0x0000000074937000-memory.dmp

Filesize
1.0MB

Download
memory/3524-14-0x0000000002430000-0x0000000002530000-memory.dmp

Filesize
1024KB

Download
memory/3524-17-0x0000000002430000-0x0000000002530000-memory.dmp

Filesize
1024KB

Download
memory/3524-16-0x0000000074830000-0x0000000074937000-memory.dmp

Filesize
1.0MB

Download