ff50785e8a30506353ce0c5b0f27010d5d4bb132f25f5f89974ab1b11972ced2

Analysis

max time kernel
119s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10/11/2024, 14:36

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General

Target
ff50785e8a30506353ce0c5b0f27010d5d4bb132f25f5f89974ab1b11972ced2N.exe
Size 88KB
Sample241110-rylrnasjbl
SHA256 ff50785e8a30506353ce0c5b0f27010d5d4bb132f25f5f89974ab1b11972ced2
MD5 8bc3c21038359c272eb897375cae7840
SHA1 8503b961b3728b8e977283d0a6c923fb3442dca7
SHA512 0662130b2b931e5b7d1bc60e4d5f14cae22050f1b2719e8737580b52e3eaba20b18f391666969f70c9ddea36a8ef3a5b501bc3943630f3a356ac1f375c2f6cb7
SSDEEP 1536:6LxJJlguY/NbvWU2VkWlVvtlqDyKJR40AEEoU2l9:cc/R+U23vtlPR0pT
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

bootkit discovery persistence spyware stealer upx

Malware Config

Signatures

Blocklisted process makes network request 7 IoCs

flow	pid	Process
15	3708	rundll32.exe
21	3708	rundll32.exe
22	3708	rundll32.exe
23	3708	rundll32.exe
37	3708	rundll32.exe
41	3708	rundll32.exe
48	3708	rundll32.exe

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023b67-13.dat	acprotect

Deletes itself 1 IoCs

pid	Process
4272	tptnwejv.exe

Executes dropped EXE 1 IoCs

pid	Process
4272	tptnwejv.exe

Loads dropped DLL 1 IoCs

pid	Process
3708	rundll32.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\gchznpfds\\uqobf.dll\",init"	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)	\??\s:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\r:	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)	\??\k:	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

UPX packed file 7 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x000c000000023b67-13.dat	upx
behavioral2/memory/3708-15-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral2/memory/3708-16-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral2/memory/3708-18-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral2/memory/3708-19-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral2/memory/3708-21-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral2/memory/3708-22-0x0000000010000000-0x0000000010024000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 5 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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tptnwejv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ff50785e8a30506353ce0c5b0f27010d5d4bb132f25f5f89974ab1b11972ced2N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3984	cmd.exe
408	PING.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
408	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3708	rundll32.exe
3708	rundll32.exe
3708	rundll32.exe
3708	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3708	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2260	ff50785e8a30506353ce0c5b0f27010d5d4bb132f25f5f89974ab1b11972ced2N.exe
4272	tptnwejv.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2260 wrote to memory of 3984	2260	ff50785e8a30506353ce0c5b0f27010d5d4bb132f25f5f89974ab1b11972ced2N.exe	84
PID 2260 wrote to memory of 3984	2260	ff50785e8a30506353ce0c5b0f27010d5d4bb132f25f5f89974ab1b11972ced2N.exe	84
PID 2260 wrote to memory of 3984	2260	ff50785e8a30506353ce0c5b0f27010d5d4bb132f25f5f89974ab1b11972ced2N.exe	84
PID 3984 wrote to memory of 408	3984	cmd.exe	86
PID 3984 wrote to memory of 408	3984	cmd.exe	86
PID 3984 wrote to memory of 408	3984	cmd.exe	86
PID 3984 wrote to memory of 4272	3984	cmd.exe	89
PID 3984 wrote to memory of 4272	3984	cmd.exe	89
PID 3984 wrote to memory of 4272	3984	cmd.exe	89
PID 4272 wrote to memory of 3708	4272	tptnwejv.exe	91
PID 4272 wrote to memory of 3708	4272	tptnwejv.exe	91
PID 4272 wrote to memory of 3708	4272	tptnwejv.exe	91

C:\Users\Admin\AppData\Local\Temp\ff50785e8a30506353ce0c5b0f27010d5d4bb132f25f5f89974ab1b11972ced2N.exe
"C:\Users\Admin\AppData\Local\Temp\ff50785e8a30506353ce0c5b0f27010d5d4bb132f25f5f89974ab1b11972ced2N.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2260
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\tptnwejv.exe "C:\Users\Admin\AppData\Local\Temp\ff50785e8a30506353ce0c5b0f27010d5d4bb132f25f5f89974ab1b11972ced2N.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3984
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:408
- - \??\c:\tptnwejv.exe
    c:\tptnwejv.exe "C:\Users\Admin\AppData\Local\Temp\ff50785e8a30506353ce0c5b0f27010d5d4bb132f25f5f89974ab1b11972ced2N.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4272
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\gchznpfds\uqobf.dll",init c:\tptnwejv.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)
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3708

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

tptnwejv.exe

Path C:\tptnwejv.exe
Size 88KB
SHA256 6027a1c0221f1c25faa7343163f84717318e949ecfcab3dd7f6ca0c9152d302c
MD5 aa15fa26438170a7179772d3697f2f81
SHA1 01f7424c9b6e016bcab58a2f74324dd1513630c6
SHA512 b7ea84eef05ef8249de91da470afca488830f0ddb9fdba5bcae98a41219271b0a3ca38eff8a831a22bd2df76048b3cc636da2c510626e786a9c9dacf96cd6d39
SSDEEP 1536:6LxJJlguY/NbvWU2VkWlVvtlqDyKJR40AEEoU2l9Q:cc/R+U23vtlPR0pTS
MD5 SHA1 SHA512 SSDEEP

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uqobf.dll

Path \??\c:\gchznpfds\uqobf.dll
Size 46KB
SHA256 b6bc7902da0250f6ca920b35b222f6a0fe62102caf05d2a1722c4d3b225a0a9e
MD5 42fe886bcb6460f7c2a46e21ecac5da6
SHA1 7d9a1c9fe17121cf61444da965f29e974a95ede2
SHA512 3d1a7dc1d9ca8a4376302ba20df584ad59b98e0d3b18b06b22d7f5a455833ce124e412fc1922a3b704dcbafa31987cda3115c9a71dd6299683502cebae33567c
SSDEEP 768:P60NIyOvlPSGxZ00FBsMT0fdB5h3vU7ExCClpoduUglNgLoR/C:P6e4lP5rvz1Vd8H/C
MD5 SHA1 SHA512 SSDEEP

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memory/2260-1-0x00000000009D0000-0x00000000009D2000-memory.dmp

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memory/2260-4-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/2260-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/3708-16-0x0000000010000000-0x0000000010024000-memory.dmp

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memory/3708-15-0x0000000010000000-0x0000000010024000-memory.dmp

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memory/3708-18-0x0000000010000000-0x0000000010024000-memory.dmp

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memory/3708-19-0x0000000010000000-0x0000000010024000-memory.dmp

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memory/3708-21-0x0000000010000000-0x0000000010024000-memory.dmp

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memory/3708-22-0x0000000010000000-0x0000000010024000-memory.dmp

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memory/4272-12-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4272-8-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4272-9-0x0000000000480000-0x0000000000482000-memory.dmp

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