24f62ac03f36d55d90ad268265e2d969bf9e5915f1928968140f3f4c43a8c4a8

General

Target

freevbckфффs.exe
Size

845KB
MD5

0032a44ea5ab15f9d8b1509a01b28acb
SHA1

7016f5f60c90c9d04d8b46310a02993d331687aa
SHA256

24f62ac03f36d55d90ad268265e2d969bf9e5915f1928968140f3f4c43a8c4a8
SHA512

32643b12c89eb69421c90fef10e32b3032fa73b932222e1a17515491e5617459e5639ddd95b9dc5512b0328ed8720c2f40a6fb028bbf17a68836f0b4aadc3bd6
SSDEEP

24576:qsS04YNEMuExDiU6E5R9s8xY/2l/d+1Ibt+ro:qE4auS+UjfU2T+1Ibt+r

Score

7^/10

Malware Config

Signatures

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-553605503-2331009851-2137262461-1000\Control Panel\International\Geo\Nation	AudioDriver.exe
Key value queried	\REGISTRY\USER\S-1-5-21-553605503-2331009851-2137262461-1000\Control Panel\International\Geo\Nation	freevbckфффs.exe

Executes dropped EXE 1 IoCs

pid	Process
1028	AudioDriver.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	freevbckфффs.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	freevbckфффs.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	freevbckфффs.exe
File created	C:\Windows\assembly\Desktop.ini	freevbckфффs.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	freevbckфффs.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1624	PING.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1028	AudioDriver.exe
1028	AudioDriver.exe
1028	AudioDriver.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1028	AudioDriver.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4920 wrote to memory of 1028	4920	freevbckфффs.exe	86
PID 4920 wrote to memory of 1028	4920	freevbckфффs.exe	86
PID 4920 wrote to memory of 1028	4920	freevbckфффs.exe	86
PID 1028 wrote to memory of 1788	1028	AudioDriver.exe	91
PID 1028 wrote to memory of 1788	1028	AudioDriver.exe	91
PID 1028 wrote to memory of 1788	1028	AudioDriver.exe	91
PID 1788 wrote to memory of 1624	1788	cmd.exe	93
PID 1788 wrote to memory of 1624	1788	cmd.exe	93
PID 1788 wrote to memory of 1624	1788	cmd.exe	93
PID 1788 wrote to memory of 4184	1788	cmd.exe	94
PID 1788 wrote to memory of 4184	1788	cmd.exe	94
PID 1788 wrote to memory of 4184	1788	cmd.exe	94
PID 1788 wrote to memory of 1700	1788	cmd.exe	95
PID 1788 wrote to memory of 1700	1788	cmd.exe	95
PID 1788 wrote to memory of 1700	1788	cmd.exe	95
PID 1788 wrote to memory of 2324	1788	cmd.exe	96
PID 1788 wrote to memory of 2324	1788	cmd.exe	96
PID 1788 wrote to memory of 2324	1788	cmd.exe	96
PID 1788 wrote to memory of 3152	1788	cmd.exe	97
PID 1788 wrote to memory of 3152	1788	cmd.exe	97
PID 1788 wrote to memory of 3152	1788	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\freevbckфффs.exe
"C:\Users\Admin\AppData\Local\Temp\freevbckфффs.exe"
1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4920
- C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1028
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\{08a45fa7-1f44-4f64-9e78-de9682d57756}.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1788
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1
      4⤵
      Runs ping.exe
      PID:1624
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /S /D /c" echo j "
      4⤵
      PID:4184
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /S /D /c" del "C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe""
      4⤵
      PID:1700
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /S /D /c" echo j "
      4⤵
      PID:2324
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /S /D /c" del C:\Users\Admin\AppData\Local\Temp\{08a45fa7-1f44-4f64-9e78-de9682d57756}.bat"
      4⤵
      PID:3152

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\{08a45fa7-1f44-4f64-9e78-de9682d57756}.bat

Filesize
202B

MD5
b9992c598e151e1445278b45789d3d37

SHA1
0c9fbca7fde9a5421c687d1884d7742ecd949268

SHA256
13ba12b858f01b97e4b98e1794282eb6a9640c79a1d3428f6a4a3fd00afc8cb5

SHA512
5f39dbc4efbf574ccd1cb257b06ce29bf13b5e9dded4108cbad1618849bec7fb2400119b04df6eab60b45af925d1af1498cf9d6d0a6bde89f9aa131a6ecb335f

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe

Filesize
845KB

MD5
0032a44ea5ab15f9d8b1509a01b28acb

SHA1
7016f5f60c90c9d04d8b46310a02993d331687aa

SHA256
24f62ac03f36d55d90ad268265e2d969bf9e5915f1928968140f3f4c43a8c4a8

SHA512
32643b12c89eb69421c90fef10e32b3032fa73b932222e1a17515491e5617459e5639ddd95b9dc5512b0328ed8720c2f40a6fb028bbf17a68836f0b4aadc3bd6

Download Submit
memory/1028-18-0x0000000074F80000-0x0000000075531000-memory.dmp

Filesize
5.7MB

Download
memory/1028-19-0x0000000001170000-0x0000000001180000-memory.dmp

Filesize
64KB

Download
memory/1028-21-0x0000000074F80000-0x0000000075531000-memory.dmp

Filesize
5.7MB

Download
memory/1028-22-0x0000000001170000-0x0000000001180000-memory.dmp

Filesize
64KB

Download
memory/1028-27-0x0000000001170000-0x0000000001180000-memory.dmp

Filesize
64KB

Download
memory/1028-28-0x0000000074F80000-0x0000000075531000-memory.dmp

Filesize
5.7MB

Download
memory/4920-0-0x0000000074F80000-0x0000000075531000-memory.dmp

Filesize
5.7MB

Download
memory/4920-1-0x0000000074F80000-0x0000000075531000-memory.dmp

Filesize
5.7MB

Download
memory/4920-2-0x00000000016E0000-0x00000000016F0000-memory.dmp

Filesize
64KB

Download
memory/4920-20-0x0000000074F80000-0x0000000075531000-memory.dmp

Filesize
5.7MB

Download

Analysis

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