05c0b4a72c242a3a6462da908883eccd7855dd9486d0395f386082f4b4c82abb

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/03/2024, 01:58

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

05c0b4a72c242a3a6462da908883eccd7855dd9486d0395f386082f4b4c82abb.exe
Size

402KB
MD5

d854b3e2d53a589a6bedb6c8a8d1f3b8
SHA1

0f18692da2e5707e320aed6b4abfed2f6b990e9b
SHA256

05c0b4a72c242a3a6462da908883eccd7855dd9486d0395f386082f4b4c82abb
SHA512

babe92247fe3fccdaaa3457c7afbe02ccb458157fd915bd2573a23d55e25575010c02ff39d17824de1330b2ed4f0b6d213dfd3df78165ae21c57525de54f7856
SSDEEP

6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4:gtRfJcNYFNm8UhlZGse

Score

8^/10

bootkit persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 8 IoCs

flow	pid	Process
14	4404	rundll32.exe
24	4404	rundll32.exe
38	4404	rundll32.exe
39	4404	rundll32.exe
41	4404	rundll32.exe
42	4404	rundll32.exe
48	4404	rundll32.exe
51	4404	rundll32.exe

Deletes itself 1 IoCs

pid	Process
748	ueoyra.exe

Executes dropped EXE 1 IoCs

pid	Process
748	ueoyra.exe

Loads dropped DLL 1 IoCs

pid	Process
4404	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-1-5-21-1904519900-954640453-4250331663-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\smuak\\cgsdw.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)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\w:	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
4404	rundll32.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\smuak	ueoyra.exe
File created	\??\c:\Program Files\smuak\cgsdw.dll	ueoyra.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
1720	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe
4404	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4404	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4908	05c0b4a72c242a3a6462da908883eccd7855dd9486d0395f386082f4b4c82abb.exe
748	ueoyra.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4908 wrote to memory of 3632	4908	05c0b4a72c242a3a6462da908883eccd7855dd9486d0395f386082f4b4c82abb.exe	94
PID 4908 wrote to memory of 3632	4908	05c0b4a72c242a3a6462da908883eccd7855dd9486d0395f386082f4b4c82abb.exe	94
PID 4908 wrote to memory of 3632	4908	05c0b4a72c242a3a6462da908883eccd7855dd9486d0395f386082f4b4c82abb.exe	94
PID 3632 wrote to memory of 1720	3632	cmd.exe	96
PID 3632 wrote to memory of 1720	3632	cmd.exe	96
PID 3632 wrote to memory of 1720	3632	cmd.exe	96
PID 3632 wrote to memory of 748	3632	cmd.exe	98
PID 3632 wrote to memory of 748	3632	cmd.exe	98
PID 3632 wrote to memory of 748	3632	cmd.exe	98
PID 748 wrote to memory of 4404	748	ueoyra.exe	99
PID 748 wrote to memory of 4404	748	ueoyra.exe	99
PID 748 wrote to memory of 4404	748	ueoyra.exe	99

C:\Users\Admin\AppData\Local\Temp\05c0b4a72c242a3a6462da908883eccd7855dd9486d0395f386082f4b4c82abb.exe
"C:\Users\Admin\AppData\Local\Temp\05c0b4a72c242a3a6462da908883eccd7855dd9486d0395f386082f4b4c82abb.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4908
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ueoyra.exe "C:\Users\Admin\AppData\Local\Temp\05c0b4a72c242a3a6462da908883eccd7855dd9486d0395f386082f4b4c82abb.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3632
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:1720
- - C:\Users\Admin\AppData\Local\Temp\ueoyra.exe
    C:\Users\Admin\AppData\Local\Temp\\ueoyra.exe "C:\Users\Admin\AppData\Local\Temp\05c0b4a72c242a3a6462da908883eccd7855dd9486d0395f386082f4b4c82abb.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:748
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\smuak\cgsdw.dll",Verify C:\Users\Admin\AppData\Local\Temp\ueoyra.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:4404

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=4260 --field-trial-handle=3488,i,1267426273081718772,6254127258555406296,262144 --variations-seed-version /prefetch:8
1⤵
PID:2852

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
402KB

MD5
b19f294b3f49d829d52d8c857f348887

SHA1
497deeeae481572f32aaf4ee64a51df63965e6be

SHA256
ffd6b1006114166253f39f55e409a77b0a0b00467274428903dc5acf7aed3b7e

SHA512
bd5e73a6de3f6b0fd40ee2b69d9d563c661b14083351436ab6d577139d2cfd9027803c667a11e96409c2e9f715857eb7e176e3842ff70a0ab38f1f7880f462b3

Download Submit
\??\c:\Program Files\smuak\cgsdw.dll

Filesize
228KB

MD5
07ec3c5e91a61011bb3d72781b3e040f

SHA1
bfcfc935ffdbccfa16ca3321a50ba3d5afb6feff

SHA256
779fd53045d2163c9ca997dd1cb6e1da05088c449085a52571201319c578e24b

SHA512
4eba29e9daccf2a644aa44b6c3c4002444a01a37ed2de96cee7ffdbe8fa86881629130fd22c9093b06c5b2618479ce3426c781ea04ad592d615c1243c88193e6

Download Submit
memory/748-7-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/4404-10-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/4404-11-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/4404-13-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/4908-0-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/4908-2-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download