5e310a21b195b2f1fbf4fcfb665d3f95d76edc9fa0d4406cc7b292374f2c71fa

Analysis

max time kernel
150s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20240319-en
resource tags

arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
submitted
06/04/2024, 02:58

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General

Target

5e310a21b195b2f1fbf4fcfb665d3f95d76edc9fa0d4406cc7b292374f2c71fa.exe
Size

404KB
MD5

b423c62ae6a06c28e1240fc2a67d2fcc
SHA1

3037221d07c11ca5382d7f4c6f39655b3ee2c768
SHA256

5e310a21b195b2f1fbf4fcfb665d3f95d76edc9fa0d4406cc7b292374f2c71fa
SHA512

ef513f6ee20fd9779875e46a0b7777a7f53ba1ae83f6dbbf285f126f0344f947ac640d29abc189cd1a2c1c5469028507e56f7f11b4a60feff7122461e3ce98c6
SSDEEP

6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4:gtRfJcNYFNm8UhlZGse

Score

8^/10

bootkit persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 8 IoCs

flow	pid	Process
34	4556	rundll32.exe
41	4556	rundll32.exe
45	4556	rundll32.exe
46	4556	rundll32.exe
61	4556	rundll32.exe
62	4556	rundll32.exe
71	4556	rundll32.exe
86	4556	rundll32.exe

Deletes itself 1 IoCs

pid	Process
8	vcrsshn.exe

Executes dropped EXE 1 IoCs

pid	Process
8	vcrsshn.exe

Loads dropped DLL 1 IoCs

pid	Process
4556	rundll32.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\xftrk\\jumny.dll\",Verify"	rundll32.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	rundll32.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4556	rundll32.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\xftrk	vcrsshn.exe
File created	\??\c:\Program Files\xftrk\jumny.dll	vcrsshn.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	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1156	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe
4556	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4556	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4780	5e310a21b195b2f1fbf4fcfb665d3f95d76edc9fa0d4406cc7b292374f2c71fa.exe
8	vcrsshn.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4780 wrote to memory of 4744	4780	5e310a21b195b2f1fbf4fcfb665d3f95d76edc9fa0d4406cc7b292374f2c71fa.exe	95
PID 4780 wrote to memory of 4744	4780	5e310a21b195b2f1fbf4fcfb665d3f95d76edc9fa0d4406cc7b292374f2c71fa.exe	95
PID 4780 wrote to memory of 4744	4780	5e310a21b195b2f1fbf4fcfb665d3f95d76edc9fa0d4406cc7b292374f2c71fa.exe	95
PID 4744 wrote to memory of 1156	4744	cmd.exe	98
PID 4744 wrote to memory of 1156	4744	cmd.exe	98
PID 4744 wrote to memory of 1156	4744	cmd.exe	98
PID 4744 wrote to memory of 8	4744	cmd.exe	100
PID 4744 wrote to memory of 8	4744	cmd.exe	100
PID 4744 wrote to memory of 8	4744	cmd.exe	100
PID 8 wrote to memory of 4556	8	vcrsshn.exe	101
PID 8 wrote to memory of 4556	8	vcrsshn.exe	101
PID 8 wrote to memory of 4556	8	vcrsshn.exe	101

C:\Users\Admin\AppData\Local\Temp\5e310a21b195b2f1fbf4fcfb665d3f95d76edc9fa0d4406cc7b292374f2c71fa.exe
"C:\Users\Admin\AppData\Local\Temp\5e310a21b195b2f1fbf4fcfb665d3f95d76edc9fa0d4406cc7b292374f2c71fa.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4780
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\vcrsshn.exe "C:\Users\Admin\AppData\Local\Temp\5e310a21b195b2f1fbf4fcfb665d3f95d76edc9fa0d4406cc7b292374f2c71fa.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4744
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:1156
- - C:\Users\Admin\AppData\Local\Temp\vcrsshn.exe
    C:\Users\Admin\AppData\Local\Temp\\vcrsshn.exe "C:\Users\Admin\AppData\Local\Temp\5e310a21b195b2f1fbf4fcfb665d3f95d76edc9fa0d4406cc7b292374f2c71fa.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:8
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\xftrk\jumny.dll",Verify C:\Users\Admin\AppData\Local\Temp\vcrsshn.exe
      4⤵
      Blocklisted process makes network request
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      Suspicious use of NtSetInformationThreadHideFromDebugger
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4556

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 --no-appcompat-clear --mojo-platform-channel-handle=3344 --field-trial-handle=3536,i,10914981530159316853,12381340356750224673,262144 --variations-seed-version /prefetch:8
1⤵
PID:3296

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

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\vcrsshn.exe

Filesize
404KB

MD5
24b3d1a53bd2cc559c8beb0a66352253

SHA1
7b6bce3f42507f8d035f7f2115747aeb36c0aed8

SHA256
dd65d53ef42a4fa65bb09051b1b101bc02c887a01531b06e5aa26b05a51501be

SHA512
bcd11224069faef88b0c61c210905611d00d731b9b7dd24a1c260eb9c08fad3925b4d16a82c883dadd3f5ac004637f18eb50a9e722443e3f00f559d71556ecdd

Download Submit
\??\c:\Program Files\xftrk\jumny.dll

Filesize
228KB

MD5
44efe2480fc0d3decea42414563fce0d

SHA1
5d38fd35546b0b902b5566b9524985cb95ae1278

SHA256
30d06648991ed8455b896e0f731ac03a79e6c1f1e6ee1162b0389efb5a556faf

SHA512
ef00617123697be6cd8c77950263a183b614533f2fa2d6f646a7030321c4fce8131b98b223438cde814cc148cd7a8bee170cbc225bda8e3940323759175b3879

Download Submit
memory/8-7-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/4556-10-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/4556-11-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/4556-13-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/4780-0-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/4780-2-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download