a36e73500b00d29e707a00e886d8e7a1194f185baafd930063ba304b49a82c73

Analysis

max time kernel
145s
max time network
154s
platform
windows7_x64
resource
win7-20231023-en
resource tags

arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
submitted
02/11/2023, 19:51

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General

Target

NEAS.bd14904a859d70d3bdab8d80cae6a6b0.exe
Size

94KB
MD5

bd14904a859d70d3bdab8d80cae6a6b0
SHA1

c9fee830fa05464aa4342a8ee72c19a7de439bb4
SHA256

a36e73500b00d29e707a00e886d8e7a1194f185baafd930063ba304b49a82c73
SHA512

395a8812c8d2bb4ad3960eb9ab6f8e28a955c6fed399f0e973098e4a625214d9c8dabe07604e293ec77473dee4adfa96489d2ff013526bcf45883473fd9c5bf7
SSDEEP

1536:laK4RNx6nb4RoIw/vvBSxXsral6x2aE0zLve2yESXGTBcvt8UaKW40AEEo:IK4RNx6nb4RoIw/XBSeral6oaE0HGnvC

Score

8^/10

bootkit persistence spyware stealer upx

Malware Config

Signatures

Blocklisted process makes network request 10 IoCs

flow	pid	Process
4	1980	rundll32.exe
5	1980	rundll32.exe
8	1980	rundll32.exe
9	1980	rundll32.exe
10	1980	rundll32.exe
13	1980	rundll32.exe
14	1980	rundll32.exe
15	1980	rundll32.exe
17	1980	rundll32.exe
18	1980	rundll32.exe

ACProtect 1.3x - 1.4x DLL software 5 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000a000000015c4f-9.dat	acprotect
behavioral1/files/0x000a000000015c4f-14.dat	acprotect
behavioral1/files/0x000a000000015c4f-12.dat	acprotect
behavioral1/files/0x000a000000015c4f-11.dat	acprotect
behavioral1/files/0x000a000000015c4f-10.dat	acprotect

Deletes itself 1 IoCs

pid	Process
1260	bzvdhdde.exe

Executes dropped EXE 1 IoCs

pid	Process
1260	bzvdhdde.exe

Loads dropped DLL 4 IoCs

pid	Process
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	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

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000a000000015c4f-9.dat	upx
behavioral1/files/0x000a000000015c4f-14.dat	upx
behavioral1/files/0x000a000000015c4f-12.dat	upx
behavioral1/files/0x000a000000015c4f-11.dat	upx
behavioral1/files/0x000a000000015c4f-10.dat	upx
behavioral1/memory/1980-15-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral1/memory/1980-16-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral1/memory/1980-17-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral1/memory/1980-22-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral1/memory/1980-23-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral1/memory/1980-24-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral1/memory/1980-25-0x0000000010000000-0x0000000010024000-memory.dmp	upx

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-1-5-21-2085049433-1067986815-1244098655-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\cavdos\\yoxkn.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)	\??\u:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\y:	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

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
2236	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1980	rundll32.exe
1980	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1980	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3024	NEAS.bd14904a859d70d3bdab8d80cae6a6b0.exe
1260	bzvdhdde.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 3024 wrote to memory of 2052	3024	NEAS.bd14904a859d70d3bdab8d80cae6a6b0.exe	28
PID 3024 wrote to memory of 2052	3024	NEAS.bd14904a859d70d3bdab8d80cae6a6b0.exe	28
PID 3024 wrote to memory of 2052	3024	NEAS.bd14904a859d70d3bdab8d80cae6a6b0.exe	28
PID 3024 wrote to memory of 2052	3024	NEAS.bd14904a859d70d3bdab8d80cae6a6b0.exe	28
PID 2052 wrote to memory of 2236	2052	cmd.exe	30
PID 2052 wrote to memory of 2236	2052	cmd.exe	30
PID 2052 wrote to memory of 2236	2052	cmd.exe	30
PID 2052 wrote to memory of 2236	2052	cmd.exe	30
PID 2052 wrote to memory of 1260	2052	cmd.exe	31
PID 2052 wrote to memory of 1260	2052	cmd.exe	31
PID 2052 wrote to memory of 1260	2052	cmd.exe	31
PID 2052 wrote to memory of 1260	2052	cmd.exe	31
PID 1260 wrote to memory of 1980	1260	bzvdhdde.exe	32
PID 1260 wrote to memory of 1980	1260	bzvdhdde.exe	32
PID 1260 wrote to memory of 1980	1260	bzvdhdde.exe	32
PID 1260 wrote to memory of 1980	1260	bzvdhdde.exe	32
PID 1260 wrote to memory of 1980	1260	bzvdhdde.exe	32
PID 1260 wrote to memory of 1980	1260	bzvdhdde.exe	32
PID 1260 wrote to memory of 1980	1260	bzvdhdde.exe	32

C:\Users\Admin\AppData\Local\Temp\NEAS.bd14904a859d70d3bdab8d80cae6a6b0.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.bd14904a859d70d3bdab8d80cae6a6b0.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3024
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\bzvdhdde.exe "C:\Users\Admin\AppData\Local\Temp\NEAS.bd14904a859d70d3bdab8d80cae6a6b0.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2052
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:2236
- - \??\c:\bzvdhdde.exe
    c:\bzvdhdde.exe "C:\Users\Admin\AppData\Local\Temp\NEAS.bd14904a859d70d3bdab8d80cae6a6b0.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1260
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\cavdos\yoxkn.dll",init c:\bzvdhdde.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)
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1980

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

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Downloads

C:\bzvdhdde.exe

Filesize
94KB

MD5
640cb827f3e5062a92385986a37e1b75

SHA1
661d80adec6773fb1a0892ae7cd2dfeca22b0f6d

SHA256
6cfb7565068a608e3cb78a8f3f1530dff20ebb9189b99cca22eb474026c8472a

SHA512
386e1f0fb546bb6c1e98bd53fb968d473697b8446528d63d96f92f5cc60e6c62f3621e77134457e4d6b706f55376e037febb1c5221b2a5e2d6b0c0856de2766e

Download Submit
\??\c:\bzvdhdde.exe

Filesize
94KB

MD5
640cb827f3e5062a92385986a37e1b75

SHA1
661d80adec6773fb1a0892ae7cd2dfeca22b0f6d

SHA256
6cfb7565068a608e3cb78a8f3f1530dff20ebb9189b99cca22eb474026c8472a

SHA512
386e1f0fb546bb6c1e98bd53fb968d473697b8446528d63d96f92f5cc60e6c62f3621e77134457e4d6b706f55376e037febb1c5221b2a5e2d6b0c0856de2766e

Download Submit
\??\c:\cavdos\yoxkn.dll

Filesize
46KB

MD5
42fe886bcb6460f7c2a46e21ecac5da6

SHA1
7d9a1c9fe17121cf61444da965f29e974a95ede2

SHA256
b6bc7902da0250f6ca920b35b222f6a0fe62102caf05d2a1722c4d3b225a0a9e

SHA512
3d1a7dc1d9ca8a4376302ba20df584ad59b98e0d3b18b06b22d7f5a455833ce124e412fc1922a3b704dcbafa31987cda3115c9a71dd6299683502cebae33567c

Download Submit
\cavdos\yoxkn.dll

Filesize
46KB

MD5
42fe886bcb6460f7c2a46e21ecac5da6

SHA1
7d9a1c9fe17121cf61444da965f29e974a95ede2

SHA256
b6bc7902da0250f6ca920b35b222f6a0fe62102caf05d2a1722c4d3b225a0a9e

SHA512
3d1a7dc1d9ca8a4376302ba20df584ad59b98e0d3b18b06b22d7f5a455833ce124e412fc1922a3b704dcbafa31987cda3115c9a71dd6299683502cebae33567c

Download Submit
\cavdos\yoxkn.dll

Filesize
46KB

MD5
42fe886bcb6460f7c2a46e21ecac5da6

SHA1
7d9a1c9fe17121cf61444da965f29e974a95ede2

SHA256
b6bc7902da0250f6ca920b35b222f6a0fe62102caf05d2a1722c4d3b225a0a9e

SHA512
3d1a7dc1d9ca8a4376302ba20df584ad59b98e0d3b18b06b22d7f5a455833ce124e412fc1922a3b704dcbafa31987cda3115c9a71dd6299683502cebae33567c

Download Submit
\cavdos\yoxkn.dll

Filesize
46KB

MD5
42fe886bcb6460f7c2a46e21ecac5da6

SHA1
7d9a1c9fe17121cf61444da965f29e974a95ede2

SHA256
b6bc7902da0250f6ca920b35b222f6a0fe62102caf05d2a1722c4d3b225a0a9e

SHA512
3d1a7dc1d9ca8a4376302ba20df584ad59b98e0d3b18b06b22d7f5a455833ce124e412fc1922a3b704dcbafa31987cda3115c9a71dd6299683502cebae33567c

Download Submit
\cavdos\yoxkn.dll

Filesize
46KB

MD5
42fe886bcb6460f7c2a46e21ecac5da6

SHA1
7d9a1c9fe17121cf61444da965f29e974a95ede2

SHA256
b6bc7902da0250f6ca920b35b222f6a0fe62102caf05d2a1722c4d3b225a0a9e

SHA512
3d1a7dc1d9ca8a4376302ba20df584ad59b98e0d3b18b06b22d7f5a455833ce124e412fc1922a3b704dcbafa31987cda3115c9a71dd6299683502cebae33567c

Download Submit
memory/1260-6-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1260-8-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1980-17-0x0000000010000000-0x0000000010024000-memory.dmp

Filesize
144KB

Download
memory/1980-15-0x0000000010000000-0x0000000010024000-memory.dmp

Filesize
144KB

Download
memory/1980-16-0x0000000010000000-0x0000000010024000-memory.dmp

Filesize
144KB

Download
memory/1980-13-0x0000000010000000-0x0000000010024000-memory.dmp

Filesize
144KB

Download
memory/1980-22-0x0000000010000000-0x0000000010024000-memory.dmp

Filesize
144KB

Download
memory/1980-23-0x0000000010000000-0x0000000010024000-memory.dmp

Filesize
144KB

Download
memory/1980-24-0x0000000010000000-0x0000000010024000-memory.dmp

Filesize
144KB

Download
memory/1980-25-0x0000000010000000-0x0000000010024000-memory.dmp

Filesize
144KB

Download
memory/2052-5-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3024-0-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3024-2-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download