a46641ab890221831f8a21441d6d96c2b116ee95066c3ae99711c4ce89e54b19

Analysis

max time kernel
119s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
13/09/2024, 18:26

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General

Target

8824a0b912b42dc9ebd18c8e85a89680N.exe
Size

118KB
MD5

8824a0b912b42dc9ebd18c8e85a89680
SHA1

e2e2a1f22c2091274eb43975ce71d7c50152080d
SHA256

a46641ab890221831f8a21441d6d96c2b116ee95066c3ae99711c4ce89e54b19
SHA512

8223503f19e96bdc0c91054004bb3a86bb2fa3b56b8d9c9ab3e6c890d3a88d956373753dde760c2003c22e08b1fc5e18f5fbed0d81f3ffa6fa47f87eeb7d3440
SSDEEP

3072:EagwS1Ut+KNPJI1F3Md55keTZwcM2I38QXyT:vUGPJKF3Md55ZTZwz38QXS

Score

8^/10

bootkit discovery persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 4 IoCs

flow	pid	Process
14	324	rundll32.exe
22	324	rundll32.exe
23	324	rundll32.exe
41	324	rundll32.exe

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000a0000000233d4-10.dat	acprotect

Deletes itself 1 IoCs

pid	Process
2104	muqmzchgt.exe

Executes dropped EXE 1 IoCs

pid	Process
2104	muqmzchgt.exe

Loads dropped DLL 1 IoCs

pid	Process
324	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-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\upwup\\xyhgw.ygx\",LoadXML"	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)	\??\i:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\g:	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)	\??\t:	rundll32.exe
File opened (read-only)	\??\a:	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)	\??\u:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\w:	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

System Location Discovery: System Language Discovery 1 TTPs 6 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	8824a0b912b42dc9ebd18c8e85a89680N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	muqmzchgt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.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
4940	cmd.exe
4432	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

Kills process with taskkill 1 IoCs

evasion

pid	Process
2140	taskkill.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4432	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe
324	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	324	rundll32.exe
Token: SeDebugPrivilege	2140	taskkill.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2568	8824a0b912b42dc9ebd18c8e85a89680N.exe
2104	muqmzchgt.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2568 wrote to memory of 4940	2568	8824a0b912b42dc9ebd18c8e85a89680N.exe	85
PID 2568 wrote to memory of 4940	2568	8824a0b912b42dc9ebd18c8e85a89680N.exe	85
PID 2568 wrote to memory of 4940	2568	8824a0b912b42dc9ebd18c8e85a89680N.exe	85
PID 4940 wrote to memory of 4432	4940	cmd.exe	87
PID 4940 wrote to memory of 4432	4940	cmd.exe	87
PID 4940 wrote to memory of 4432	4940	cmd.exe	87
PID 4940 wrote to memory of 2104	4940	cmd.exe	89
PID 4940 wrote to memory of 2104	4940	cmd.exe	89
PID 4940 wrote to memory of 2104	4940	cmd.exe	89
PID 2104 wrote to memory of 324	2104	muqmzchgt.exe	90
PID 2104 wrote to memory of 324	2104	muqmzchgt.exe	90
PID 2104 wrote to memory of 324	2104	muqmzchgt.exe	90
PID 324 wrote to memory of 2140	324	rundll32.exe	92
PID 324 wrote to memory of 2140	324	rundll32.exe	92
PID 324 wrote to memory of 2140	324	rundll32.exe	92

C:\Users\Admin\AppData\Local\Temp\8824a0b912b42dc9ebd18c8e85a89680N.exe
"C:\Users\Admin\AppData\Local\Temp\8824a0b912b42dc9ebd18c8e85a89680N.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2568
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\muqmzchgt.exe "C:\Users\Admin\AppData\Local\Temp\8824a0b912b42dc9ebd18c8e85a89680N.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4940
- - 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:4432
- - C:\Users\Admin\AppData\Local\Temp\muqmzchgt.exe
    C:\Users\Admin\AppData\Local\Temp\\muqmzchgt.exe "C:\Users\Admin\AppData\Local\Temp\8824a0b912b42dc9ebd18c8e85a89680N.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2104
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\upwup\xyhgw.ygx",LoadXML C:\Users\Admin\AppData\Local\Temp\muqmzchgt.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
      Suspicious use of WriteProcessMemory
      PID:324
    - - \??\c:\windows\SysWOW64\taskkill.exe
        
        taskkill /f /im attrib.exe
        5⤵
        System Location Discovery: System Language Discovery
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:2140

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

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

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

Filesize
119KB

MD5
b71c1f3a123eef257424066c431a234c

SHA1
2d8b50677017364aeba3470b517a3f3ba2935a13

SHA256
1a2ee067f462f39a2826b36c6955cf25e731476199f96e2105a2cf19ee521e18

SHA512
50c3fdded9f06eea0b7f8d562431bffc878a091cdd1851f8161c0722569b810021ebea71b8deb29da3e74dc2bbb0f74027158b5070d8b8d9a990b86aaa460467

Download Submit
\??\c:\upwup\xyhgw.ygx

Filesize
68KB

MD5
230bd5cd04a5f8ea04af339783d1bf58

SHA1
803b2400b5e2146853dca3908e58f96bd554f1e0

SHA256
7590edd94bd18449a3432a0054cf3e6ed53f8bd01202e1706f82f83056c0f029

SHA512
9500742bc2798e94e78ae24736b51c5294e4aecce5c1e3b77151fdf04fc7ac0da8eda8be5a6a9c5cc44308eb2ea6c40902f6b4ab1d0997ece103e83a97ab0729

Download Submit
memory/324-12-0x0000000010000000-0x0000000010028000-memory.dmp

Filesize
160KB

Download
memory/324-13-0x0000000010000000-0x0000000010028000-memory.dmp

Filesize
160KB

Download
memory/324-15-0x0000000010000000-0x0000000010028000-memory.dmp

Filesize
160KB

Download
memory/324-17-0x0000000010000000-0x0000000010028000-memory.dmp

Filesize
160KB

Download
memory/2104-7-0x0000000000580000-0x0000000000581000-memory.dmp

Filesize
4KB

Download
memory/2104-9-0x0000000000400000-0x000000000043C200-memory.dmp

Filesize
240KB

Download
memory/2568-0-0x0000000000400000-0x000000000043C200-memory.dmp

Filesize
240KB

Download
memory/2568-1-0x0000000000600000-0x0000000000601000-memory.dmp

Filesize
4KB

Download
memory/2568-3-0x0000000000400000-0x000000000043C200-memory.dmp

Filesize
240KB

Download