965776dc658c84410096ff846182c9bf402b04a437cf31db432cc5579be2fda7

Analysis

max time kernel
169s
max time network
184s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
01/12/2022, 00:55

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General

Target

965776dc658c84410096ff846182c9bf402b04a437cf31db432cc5579be2fda7.dll
Size

147KB
MD5

264313c0e5e6060ddffc07df8a07ea70
SHA1

91b7a6ba877cf4631164b65227b5ccc865fe34dd
SHA256

965776dc658c84410096ff846182c9bf402b04a437cf31db432cc5579be2fda7
SHA512

0cca84fa69fd2bf01f37d297e7b742c27ef3ca55fddc6c6e272c52ddeb7ead0337dea93b07a02705862d25d5915430984c0be3ec8c45400f547647d87ec542a6
SSDEEP

3072:8mtVm+0Z8gm+gIViTZQBzZGGXxWZcgKNYw1sC1mmVXGI:lVm+0qgHkSvxEcigVl

Score

8^/10

persistence

Malware Config

Signatures

Blocklisted process makes network request 2 IoCs

flow	pid	Process
44	2176	rundll32.exe
66	2176	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\Winmgmt\Parameters\ServiceDll = "C:\\PROGRA~3\\v4w7rjbn.pzz"	regedit.exe

Loads dropped DLL 1 IoCs

pid	Process
2176	rundll32.exe

Drops file in Program Files directory 5 IoCs

description	ioc	Process
File created	C:\PROGRA~3\nbjr7w4v.plz	rundll32.exe
File created	C:\PROGRA~3\v4w7rjbn.pff	rundll32.exe
File opened for modification	C:\PROGRA~3\v4w7rjbn.pff	rundll32.exe
File created	C:\PROGRA~3\v4w7rjbn.ctrl	rundll32.exe
File created	C:\PROGRA~3\v4w7rjbn.reg	rundll32.exe

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

System Information Discovery
T1082

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "147"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe

Runs .reg file with regedit 1 IoCs

pid	Process
4216	regedit.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2176	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4200	LogonUI.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2344 wrote to memory of 332	2344	rundll32.exe	82
PID 2344 wrote to memory of 332	2344	rundll32.exe	82
PID 2344 wrote to memory of 332	2344	rundll32.exe	82
PID 332 wrote to memory of 2176	332	rundll32.exe	83
PID 332 wrote to memory of 2176	332	rundll32.exe	83
PID 332 wrote to memory of 2176	332	rundll32.exe	83
PID 2176 wrote to memory of 4216	2176	rundll32.exe	89
PID 2176 wrote to memory of 4216	2176	rundll32.exe	89
PID 2176 wrote to memory of 4216	2176	rundll32.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\965776dc658c84410096ff846182c9bf402b04a437cf31db432cc5579be2fda7.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2344
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\965776dc658c84410096ff846182c9bf402b04a437cf31db432cc5579be2fda7.dll,#1
  2⤵
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:332
- - C:\Windows\SysWOW64\rundll32.exe
    C:\Windows\system32\rundll32.exe C:\PROGRA~3\nbjr7w4v.plz,GL300
    3⤵
    - Blocklisted process makes network request
    - Loads dropped DLL
    - Drops file in Program Files directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2176
  - - C:\Windows\SysWOW64\regedit.exe
      C:\Windows\regedit.exe -s C:\PROGRA~3\v4w7rjbn.reg
      4⤵
      Sets DLL path for service in the registry
      Runs .reg file with regedit
      PID:4216

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa39b1855 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:4200

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\PROGRA~3\nbjr7w4v.plz

Filesize
147KB

MD5
264313c0e5e6060ddffc07df8a07ea70

SHA1
91b7a6ba877cf4631164b65227b5ccc865fe34dd

SHA256
965776dc658c84410096ff846182c9bf402b04a437cf31db432cc5579be2fda7

SHA512
0cca84fa69fd2bf01f37d297e7b742c27ef3ca55fddc6c6e272c52ddeb7ead0337dea93b07a02705862d25d5915430984c0be3ec8c45400f547647d87ec542a6

Download Submit
C:\ProgramData\nbjr7w4v.plz

Filesize
147KB

MD5
264313c0e5e6060ddffc07df8a07ea70

SHA1
91b7a6ba877cf4631164b65227b5ccc865fe34dd

SHA256
965776dc658c84410096ff846182c9bf402b04a437cf31db432cc5579be2fda7

SHA512
0cca84fa69fd2bf01f37d297e7b742c27ef3ca55fddc6c6e272c52ddeb7ead0337dea93b07a02705862d25d5915430984c0be3ec8c45400f547647d87ec542a6

Download Submit
C:\ProgramData\v4w7rjbn.reg

Filesize
285B

MD5
8d4e96ef0806a418c6118e678aa6030c

SHA1
5cac1d68a91b18d63cceb709843b6b7b7905f4ea

SHA256
639ec70faa7e4fb59543488900ab7fa10398aa1539afbc09b19944dde0d101df

SHA512
68808ebac711e0d309c41937d0483010e2dffaff4635812380653120e5bc2933c1dae34bd0e82ed8ace3e3df97e887520fa997bee1697b8e1680b3dc48d9fc49

Download Submit
memory/332-133-0x0000000075140000-0x000000007516B000-memory.dmp

Filesize
172KB

Download
memory/332-142-0x0000000075140000-0x000000007516B000-memory.dmp

Filesize
172KB

Download
memory/2176-139-0x0000000075100000-0x000000007512B000-memory.dmp

Filesize
172KB

Download
memory/2176-143-0x0000000075100000-0x000000007512B000-memory.dmp

Filesize
172KB

Download
memory/2176-144-0x0000000075100000-0x000000007512B000-memory.dmp

Filesize
172KB

Download