50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0

General

Target

50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe
Size

150KB
MD5

31ca2e8a5b59e40ca32a64e992d1ff47
SHA1

4691182ae6fc3f7f49ac5903bb5d33e76601dbf6
SHA256

50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0
SHA512

5393afca2087a1ee58fc862c7d979a31040bb0a2d48779b220d24346b941c212d61b08925f89678c80625c79752e605046147b89c9d562adcb9f5e98c4c57c67
SSDEEP

3072:Kecu88h/2yroutqzAoU+WuKurV9GqZghAs10jLAH:Kech8oyroSqvU+WlY8p0jLAH

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
1	1948	rundll32.exe

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\WindowsDriver\Parameters\ServiceDll = "C:\\Windows\\system32\\WindowsDriver.dll"	50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe

Deletes itself 1 IoCs

pid	Process
1896	cmd.exe

Loads dropped DLL 6 IoCs

pid	Process
1708	50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe
2008	svchost.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe

Drops file in System32 directory 7 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\IEHost2.txt	50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe
File opened for modification	C:\Windows\SysWOW64\IETimes.txt	50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe
File opened for modification	C:\Windows\SysWOW64\WindowsDriver.dll	50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe
File created	C:\Windows\SysWOW64\Uninstall alexa.exe	50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe
File opened for modification	C:\Windows\SysWOW64\IEHost2.txt	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\IETimes.txt	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\IEo.txt	rundll32.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1708	50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe
Token: SeDebugPrivilege	2008	svchost.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1708 wrote to memory of 1896	1708	50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe	28
PID 1708 wrote to memory of 1896	1708	50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe	28
PID 1708 wrote to memory of 1896	1708	50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe	28
PID 1708 wrote to memory of 1896	1708	50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe	28
PID 2008 wrote to memory of 1948	2008	svchost.exe	29
PID 2008 wrote to memory of 1948	2008	svchost.exe	29
PID 2008 wrote to memory of 1948	2008	svchost.exe	29
PID 2008 wrote to memory of 1948	2008	svchost.exe	29
PID 2008 wrote to memory of 1948	2008	svchost.exe	29
PID 2008 wrote to memory of 1948	2008	svchost.exe	29
PID 2008 wrote to memory of 1948	2008	svchost.exe	29

C:\Users\Admin\AppData\Local\Temp\50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe
"C:\Users\Admin\AppData\Local\Temp\50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe"
1⤵
- Sets DLL path for service in the registry
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1708
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\50D444~1.EXE > nul
  2⤵
  - Deletes itself
  PID:1896

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k WindowsDriver
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2008
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe c:\windows\system32\windowsdriver.dll, ServiceMain
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  - Drops file in System32 directory
  PID:1948

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\??\c:\windows\SysWOW64\windowsdriver.dll

Filesize
75.1MB

MD5
882b72abf046c1eb874068fdf07a9ada

SHA1
7000271d35529e52862dc042d0732c8104f596ba

SHA256
5585ee587bdee53cafeb6bfc9d04fc0e3430ec04fa6dbc21a3e2965bd101dbdc

SHA512
caa21457fe6ea89600579cad428fe942fd8cdefe21ab9c8133aac722325ab4b03da684cd2971290e7221458c292580eed95e248c0fa226a822895a5ee31c1c17

Download Submit
\Windows\SysWOW64\Uninstall alexa.exe

Filesize
5KB

MD5
9bf96f2e3dccb1d57295068cedaae0a5

SHA1
44d5a873f2acf0988877f88ae61e93070ba280b9

SHA256
0ab113aa05ed6326b3e38fec1dc7142ce7764eacd03fa8af4f1f6351d43966e2

SHA512
0077f7ff1fc171d63d6df9c96d7d5836b5762000aeab6ead3d182c2c5097235c57219cef666c0254d63a7542ea67f7d98bfe0d22992f6e2607fd154789e31ce2

Download Submit
\Windows\SysWOW64\WindowsDriver.dll

Filesize
75.1MB

MD5
882b72abf046c1eb874068fdf07a9ada

SHA1
7000271d35529e52862dc042d0732c8104f596ba

SHA256
5585ee587bdee53cafeb6bfc9d04fc0e3430ec04fa6dbc21a3e2965bd101dbdc

SHA512
caa21457fe6ea89600579cad428fe942fd8cdefe21ab9c8133aac722325ab4b03da684cd2971290e7221458c292580eed95e248c0fa226a822895a5ee31c1c17

Download Submit
\Windows\SysWOW64\WindowsDriver.dll

Filesize
75.1MB

MD5
882b72abf046c1eb874068fdf07a9ada

SHA1
7000271d35529e52862dc042d0732c8104f596ba

SHA256
5585ee587bdee53cafeb6bfc9d04fc0e3430ec04fa6dbc21a3e2965bd101dbdc

SHA512
caa21457fe6ea89600579cad428fe942fd8cdefe21ab9c8133aac722325ab4b03da684cd2971290e7221458c292580eed95e248c0fa226a822895a5ee31c1c17

Download Submit
\Windows\SysWOW64\WindowsDriver.dll

Filesize
75.1MB

MD5
882b72abf046c1eb874068fdf07a9ada

SHA1
7000271d35529e52862dc042d0732c8104f596ba

SHA256
5585ee587bdee53cafeb6bfc9d04fc0e3430ec04fa6dbc21a3e2965bd101dbdc

SHA512
caa21457fe6ea89600579cad428fe942fd8cdefe21ab9c8133aac722325ab4b03da684cd2971290e7221458c292580eed95e248c0fa226a822895a5ee31c1c17

Download Submit
\Windows\SysWOW64\WindowsDriver.dll

Filesize
75.1MB

MD5
882b72abf046c1eb874068fdf07a9ada

SHA1
7000271d35529e52862dc042d0732c8104f596ba

SHA256
5585ee587bdee53cafeb6bfc9d04fc0e3430ec04fa6dbc21a3e2965bd101dbdc

SHA512
caa21457fe6ea89600579cad428fe942fd8cdefe21ab9c8133aac722325ab4b03da684cd2971290e7221458c292580eed95e248c0fa226a822895a5ee31c1c17

Download Submit
\Windows\SysWOW64\WindowsDriver.dll

Filesize
75.1MB

MD5
882b72abf046c1eb874068fdf07a9ada

SHA1
7000271d35529e52862dc042d0732c8104f596ba

SHA256
5585ee587bdee53cafeb6bfc9d04fc0e3430ec04fa6dbc21a3e2965bd101dbdc

SHA512
caa21457fe6ea89600579cad428fe942fd8cdefe21ab9c8133aac722325ab4b03da684cd2971290e7221458c292580eed95e248c0fa226a822895a5ee31c1c17

Download Submit
memory/1708-55-0x0000000000980000-0x00000000009CE000-memory.dmp

Filesize
312KB

Download
memory/1708-59-0x0000000000980000-0x00000000009CE000-memory.dmp

Filesize
312KB

Download
memory/1708-54-0x0000000076121000-0x0000000076123000-memory.dmp

Filesize
8KB

Download
memory/1948-68-0x0000000010000000-0x0000000010025000-memory.dmp

Filesize
148KB

Download
memory/2008-61-0x0000000010000000-0x0000000010025000-memory.dmp

Filesize
148KB

Download

Analysis

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