68b084055762b03a39356cff421cacf7923915a39416ac7aa9be80d5ec7eb5ec

Analysis

max time kernel
40s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
28/10/2022, 18:05

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General

Target

68b084055762b03a39356cff421cacf7923915a39416ac7aa9be80d5ec7eb5ec.dll
Size

236KB
MD5

0bb0e286c6f9aaebe72c385918183c22
SHA1

b9d2c2bb9dea9669dfdf093be341d082cd1ddc1b
SHA256

68b084055762b03a39356cff421cacf7923915a39416ac7aa9be80d5ec7eb5ec
SHA512

1f89ee8e2d313a62da115b59f8e67ca974d696358a3fcba240a70dfce69b21be45a734095390ac84c086dc5c809fbc67f20e4b544e5b70d7db03f2427fbb2b14
SSDEEP

3072:SeqmgHwlaazN9U3J+P0wFp+bLrt2wkkIT:+Qj9U3jwO3rt5c

Score

10^/10

persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\zsiro = "{3ac14ab6-b249-079e-c35a-b249c23ecbe5}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1948	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\mfveb.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\mfveb.dll	rundll32.exe
File created	C:\Windows\SysWOW64\undmj.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\undmj.dll	rundll32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3ac14ab6-b249-079e-c35a-b249c23ecbe5}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3ac14ab6-b249-079e-c35a-b249c23ecbe5}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3ac14ab6-b249-079e-c35a-b249c23ecbe5}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3ac14ab6-b249-079e-c35a-b249c23ecbe5}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3ac14ab6-b249-079e-c35a-b249c23ecbe5}\InprocServer32\ = "C:\\Windows\\SysWow64\\undmj.dll"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1948	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1948	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1948	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2000 wrote to memory of 1948	2000	rundll32.exe	28
PID 2000 wrote to memory of 1948	2000	rundll32.exe	28
PID 2000 wrote to memory of 1948	2000	rundll32.exe	28
PID 2000 wrote to memory of 1948	2000	rundll32.exe	28
PID 2000 wrote to memory of 1948	2000	rundll32.exe	28
PID 2000 wrote to memory of 1948	2000	rundll32.exe	28
PID 2000 wrote to memory of 1948	2000	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\68b084055762b03a39356cff421cacf7923915a39416ac7aa9be80d5ec7eb5ec.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2000
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\68b084055762b03a39356cff421cacf7923915a39416ac7aa9be80d5ec7eb5ec.dll,#1
  2⤵
  - Adds autorun key to be loaded by Explorer.exe on startup
  - Loads dropped DLL
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1948

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Windows\SysWOW64\mfveb.dll

Filesize
625KB

MD5
95e2376b3323f062eb562b8586d0f14a

SHA1
453d4c3bf4a489433b593420a37bbffb7749875a

SHA256
bd3fa8750123d00aa0967fba44372c46ea002681da9c9b77a4f9261553e26017

SHA512
b898603d07a49237e4dfc6872d5caa7616bae1258926f10e66c4d3f0d81cccefac1e844395b65bb1f308fbc022061b52e51f60658d0a546c04b365b3428cc87d

Download Submit
memory/1948-55-0x0000000074F01000-0x0000000074F03000-memory.dmp

Filesize
8KB

Download
memory/1948-56-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1948-58-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download