4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096

General

Target

4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096.exe
Size

201KB
MD5

0d653f6ed17965f1062dc7ccbaee7f42
SHA1

efa31100972404aba01b6feff3043667b2e20c57
SHA256

4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096
SHA512

96bb805bba3b67135bc4f5eb41444581881c313b4aec314bf4eb9a0c6f7677786737991f432ed9134f5dc999d20d59d4fe3941b364af0e01e04f19f927524fce
SSDEEP

3072:a74MyJjjlLzVjN50BdQqlYgp72xzbuawaGO0OJw8KWs6IgVLE7QkfIA:awj30dlZ+GVaRVLE7QkfI

Score

8^/10

bootkit discovery persistence spyware stealer upx

Malware Config

Signatures

Blocklisted process makes network request 5 IoCs

flow	pid	Process
4	2216	rundll32.exe
5	2216	rundll32.exe
6	2216	rundll32.exe
7	2216	rundll32.exe
8	2216	rundll32.exe

Deletes itself 1 IoCs

pid	Process
1956	vdffqaks.exe

Executes dropped EXE 1 IoCs

pid	Process
1956	vdffqaks.exe

Loads dropped DLL 6 IoCs

pid	Process
1784	cmd.exe
1784	cmd.exe
2216	rundll32.exe
2216	rundll32.exe
2216	rundll32.exe
2216	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 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2524-0-0x0000000000400000-0x000000000044A000-memory.dmp	upx
behavioral1/memory/2524-2-0x0000000000400000-0x000000000044A000-memory.dmp	upx
behavioral1/files/0x000a0000000120d6-4.dat	upx
behavioral1/memory/1956-7-0x0000000000400000-0x000000000044A000-memory.dmp	upx
behavioral1/memory/1956-10-0x0000000000400000-0x000000000044A000-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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\Micro = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\awxnvdgf\\yflnnd.dll\",method"	rundll32.exe

Enumerates connected drives 3 TTPs 2 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)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	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\awxnvdgf	vdffqaks.exe
File created	\??\c:\Program Files\awxnvdgf\yflnnd.dll	vdffqaks.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	4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096.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	vdffqaks.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
1784	cmd.exe
2440	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2440	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2216	rundll32.exe
2216	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2216	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2524	4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096.exe
1956	vdffqaks.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 1784	2524	4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096.exe	30
PID 2524 wrote to memory of 1784	2524	4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096.exe	30
PID 2524 wrote to memory of 1784	2524	4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096.exe	30
PID 2524 wrote to memory of 1784	2524	4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096.exe	30
PID 1784 wrote to memory of 2440	1784	cmd.exe	32
PID 1784 wrote to memory of 2440	1784	cmd.exe	32
PID 1784 wrote to memory of 2440	1784	cmd.exe	32
PID 1784 wrote to memory of 2440	1784	cmd.exe	32
PID 1784 wrote to memory of 1956	1784	cmd.exe	33
PID 1784 wrote to memory of 1956	1784	cmd.exe	33
PID 1784 wrote to memory of 1956	1784	cmd.exe	33
PID 1784 wrote to memory of 1956	1784	cmd.exe	33
PID 1956 wrote to memory of 2216	1956	vdffqaks.exe	34
PID 1956 wrote to memory of 2216	1956	vdffqaks.exe	34
PID 1956 wrote to memory of 2216	1956	vdffqaks.exe	34
PID 1956 wrote to memory of 2216	1956	vdffqaks.exe	34
PID 1956 wrote to memory of 2216	1956	vdffqaks.exe	34
PID 1956 wrote to memory of 2216	1956	vdffqaks.exe	34
PID 1956 wrote to memory of 2216	1956	vdffqaks.exe	34

C:\Users\Admin\AppData\Local\Temp\4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096.exe
"C:\Users\Admin\AppData\Local\Temp\4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\vdffqaks.exe "C:\Users\Admin\AppData\Local\Temp\4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1784
- - 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:2440
- - C:\Users\Admin\AppData\Local\Temp\vdffqaks.exe
    C:\Users\Admin\AppData\Local\Temp\\vdffqaks.exe "C:\Users\Admin\AppData\Local\Temp\4b0b7c548371697f703817d57300d421297fe771a8d900111f41f7cfb7eb5096.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:1956
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\awxnvdgf\yflnnd.dll",method C:\Users\Admin\AppData\Local\Temp\vdffqaks.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
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2216

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
202KB

MD5
d0eddcfc5f5db5ce177fd631c74b413c

SHA1
319144616d4655fa29e427160f8d42953a24d80a

SHA256
8d76a5a5ddb38bf204cd322b9b6e76564595d8815d60acb678dd8212efcddd99

SHA512
0ab1a994a196975cc559ce648b17c6aa19150ef29c92a025193fb9e073536057bfede4af1d1199e976c4000b4296f70b94f6668b9c8c98c0b027be13b9b4f55b

Download Submit
\??\c:\Program Files\awxnvdgf\yflnnd.dll

Filesize
148KB

MD5
3a653b7dd076dcaf0bc40f87572c0ad5

SHA1
8e4767c222163a67856ead383f38f0e9f12b6b36

SHA256
e84d9dcb09d0c844912d465c9a47f3d3144e197fcc7edc643aa114113de9bbcd

SHA512
b38c942942e65beaf131b2a51d9ad1b03f7ecb1f68fb26cc8ce6c0db5650f7e93b55cfc4fb557330275bbd6c11cc2785393ce55d6e39b333ff13ebfc2f0a3fca

Download Submit
memory/1956-10-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/1956-7-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/2216-13-0x0000000010000000-0x0000000010056000-memory.dmp

Filesize
344KB

Download
memory/2216-16-0x0000000010000000-0x0000000010056000-memory.dmp

Filesize
344KB

Download
memory/2216-20-0x0000000010000000-0x0000000010056000-memory.dmp

Filesize
344KB

Download
memory/2216-19-0x0000000010050000-0x0000000010051000-memory.dmp

Filesize
4KB

Download
memory/2216-18-0x0000000010000000-0x0000000010056000-memory.dmp

Filesize
344KB

Download
memory/2216-21-0x0000000010000000-0x0000000010056000-memory.dmp

Filesize
344KB

Download
memory/2216-23-0x0000000010000000-0x0000000010056000-memory.dmp

Filesize
344KB

Download
memory/2524-2-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/2524-0-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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