b6c18d20c9e775c34c06a99758ade56d261fbd3ce4f30206b13d4a24d9c0f8f0

Analysis

max time kernel
118s
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
11/11/2024, 18:48

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General

Target
b6c18d20c9e775c34c06a99758ade56d261fbd3ce4f30206b13d4a24d9c0f8f0.exe
Size 192KB
Sample241111-xf2caateqp
SHA256 b6c18d20c9e775c34c06a99758ade56d261fbd3ce4f30206b13d4a24d9c0f8f0
MD5 0e0bd35b3a3e40cea11e941719d4e9b6
SHA1 c0e126c268ec7d8105760856cc7f4a847d2bb2b9
SHA512 f0ef5c0d544b2824a0b6c58132115f9d893001b955ed6edb4a9c3205a4b6d1ec5c4cad8fd064d5018fa87a26e61e8574bcd0d51295bb148a4b0230905f69e7e2
SSDEEP 3072:QoiD6UJRpHOrBbsfxm/MxlQq1IcB9nXg88LIHfj68agvkvhBkPhIe/yL6uY:EDJTOrBQgMNIcBBQ1I/jogvEZm
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

aspackv2 bootkit discovery persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 13 IoCs

flow	pid	Process
14	212	rundll32.exe
15	212	rundll32.exe
20	212	rundll32.exe
21	212	rundll32.exe
23	212	rundll32.exe
24	212	rundll32.exe
34	212	rundll32.exe
39	212	rundll32.exe
40	212	rundll32.exe
44	212	rundll32.exe
48	212	rundll32.exe
49	212	rundll32.exe
50	212	rundll32.exe

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x000e000000023a27-13.dat	aspack_v212_v242

Deletes itself 1 IoCs

pid	Process
4736	auuaqpyjd.exe

Executes dropped EXE 1 IoCs

pid	Process
4736	auuaqpyjd.exe

Loads dropped DLL 1 IoCs

pid	Process
212	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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Micro = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\naywudoo\\omuxbdx.dll\",method"	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)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\x:	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)	\??\s:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	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

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\naywudoo	auuaqpyjd.exe
File created	\??\c:\Program Files\naywudoo\omuxbdx.dll	auuaqpyjd.exe

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	b6c18d20c9e775c34c06a99758ade56d261fbd3ce4f30206b13d4a24d9c0f8f0.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	auuaqpyjd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.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
4428	cmd.exe
3012	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
3012	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
212	rundll32.exe
212	rundll32.exe
212	rundll32.exe
212	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	212	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4592	b6c18d20c9e775c34c06a99758ade56d261fbd3ce4f30206b13d4a24d9c0f8f0.exe
4736	auuaqpyjd.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4592 wrote to memory of 4428	4592	b6c18d20c9e775c34c06a99758ade56d261fbd3ce4f30206b13d4a24d9c0f8f0.exe	86
PID 4592 wrote to memory of 4428	4592	b6c18d20c9e775c34c06a99758ade56d261fbd3ce4f30206b13d4a24d9c0f8f0.exe	86
PID 4592 wrote to memory of 4428	4592	b6c18d20c9e775c34c06a99758ade56d261fbd3ce4f30206b13d4a24d9c0f8f0.exe	86
PID 4428 wrote to memory of 3012	4428	cmd.exe	89
PID 4428 wrote to memory of 3012	4428	cmd.exe	89
PID 4428 wrote to memory of 3012	4428	cmd.exe	89
PID 4428 wrote to memory of 4736	4428	cmd.exe	91
PID 4428 wrote to memory of 4736	4428	cmd.exe	91
PID 4428 wrote to memory of 4736	4428	cmd.exe	91
PID 4736 wrote to memory of 212	4736	auuaqpyjd.exe	93
PID 4736 wrote to memory of 212	4736	auuaqpyjd.exe	93
PID 4736 wrote to memory of 212	4736	auuaqpyjd.exe	93

C:\Users\Admin\AppData\Local\Temp\b6c18d20c9e775c34c06a99758ade56d261fbd3ce4f30206b13d4a24d9c0f8f0.exe
"C:\Users\Admin\AppData\Local\Temp\b6c18d20c9e775c34c06a99758ade56d261fbd3ce4f30206b13d4a24d9c0f8f0.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4592
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\auuaqpyjd.exe "C:\Users\Admin\AppData\Local\Temp\b6c18d20c9e775c34c06a99758ade56d261fbd3ce4f30206b13d4a24d9c0f8f0.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4428
- - 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:3012
- - C:\Users\Admin\AppData\Local\Temp\auuaqpyjd.exe
    C:\Users\Admin\AppData\Local\Temp\\auuaqpyjd.exe "C:\Users\Admin\AppData\Local\Temp\b6c18d20c9e775c34c06a99758ade56d261fbd3ce4f30206b13d4a24d9c0f8f0.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4736
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\naywudoo\omuxbdx.dll",method C:\Users\Admin\AppData\Local\Temp\auuaqpyjd.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:212

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

auuaqpyjd.exe

Path C:\Users\Admin\AppData\Local\Temp\auuaqpyjd.exe
Size 192KB
SHA256 8189d30dce2ad0a12015b1367d5b51d33db2fbc14008512fbbca98764bf24fa9
MD5 c5c75c130f75372f98ae217522872a04
SHA1 d7a1d59e8e319bb61ec34f2b8a05e10992c4b2c4
SHA512 6826def56d98f5ce1ede4764c4462ae4658ed2565b7028edd4516e068c1733e601d635d414fd306b0a2b74bb147c3bf00b7a7b93734971f0e3be8ab347f48469
SSDEEP 3072:QoiD6UJRpHOrBbsfxm/MxlQq1IcB9nXg88LIHfj68agvkvhBkPhIe/yL6um:EDJTOrBQgMNIcBBQ1I/jogvEZw
MD5 SHA1 SHA512 SSDEEP

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omuxbdx.dll

Path \??\c:\Program Files\naywudoo\omuxbdx.dll
Size 138KB
SHA256 41fd4f30553b7b0b0bfea1f38cb39c06e8f1afe6d207924f274baf16be974a1d
MD5 d261f110a32db9420d8223ecb95983cb
SHA1 d527513a0a1edb7b10d657c8fb2fb0e7f75c10ca
SHA512 b16ab7085f765c7c80080510f26ceb607d80cdb52b6eaac738d783c94ba1ecdd0dc1c8c00356fd75b3c7cfa69965c4587eb0d73f80d950947c66ee42cc718896
SSDEEP 3072:diDr4JzSBHF85YTk8IJ84cOWL7CazDypXuPP:cXmSBl8Q3TL7Cazx
MD5 SHA1 SHA512 SSDEEP

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memory/212-17-0x0000000010000000-0x0000000010085000-memory.dmp

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memory/212-22-0x0000000010000000-0x0000000010085000-memory.dmp

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memory/212-21-0x0000000010000000-0x0000000010085000-memory.dmp

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memory/212-19-0x0000000010000000-0x0000000010085000-memory.dmp

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memory/212-15-0x0000000010000000-0x0000000010085000-memory.dmp

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memory/212-18-0x0000000010000000-0x0000000010085000-memory.dmp

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memory/212-16-0x0000000010000000-0x0000000010085000-memory.dmp

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memory/4592-0-0x0000000000400000-0x000000000044401F-memory.dmp

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memory/4592-2-0x0000000000400000-0x000000000044401F-memory.dmp

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memory/4592-1-0x0000000000400000-0x000000000044401F-memory.dmp

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memory/4592-5-0x0000000000400000-0x000000000044401F-memory.dmp

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memory/4736-12-0x0000000000400000-0x000000000044401F-memory.dmp

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memory/4736-10-0x0000000000400000-0x000000000044401F-memory.dmp

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memory/4736-9-0x0000000000400000-0x000000000044401F-memory.dmp

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