e52edbcb6054097cc21950494c2f62bfe5c03fb20e59783a1d23a338a0624d2f

General

Target

900ebd010cfe1a4ba95c77121752af69.dll
Size

231KB
MD5

900ebd010cfe1a4ba95c77121752af69
SHA1

e0092554cf75cba6e59ab6cd360b98abebf4bef1
SHA256

e52edbcb6054097cc21950494c2f62bfe5c03fb20e59783a1d23a338a0624d2f
SHA512

aa097433c2840a0db993c75f7cc497f982d72851e4d1d1e0d90013e8fda805a833c7de7cf5a8903a565cec9f3231ce82474586b2dd7dd99ee49ce02a025d74d9
SSDEEP

1536:7hnfLI5eA7wY43rUD8v0mf9o4uoE7hYoQN44n3Plx3G+5bb/VGMGbwikjKZ6xs/f:FMF7X43r79o4TQ14nbGMbLmwikjnq

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

T1547.001

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\ghkat = "{0b083ec1-8380-d8d5-9491-8380b649c34b}"	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
1516	rundll32.exe
1516	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\bcfvo.dll	rundll32.exe
File created	C:\Windows\SysWOW64\tuxng.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\tuxng.dll	rundll32.exe
File created	C:\Windows\SysWOW64\fgjzs.dll	rundll32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0b083ec1-8380-d8d5-9491-8380b649c34b}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0b083ec1-8380-d8d5-9491-8380b649c34b}\InprocServer32\ = "C:\\Windows\\SysWow64\\bcfvo.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0b083ec1-8380-d8d5-9491-8380b649c34b}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0b083ec1-8380-d8d5-9491-8380b649c34b}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0b083ec1-8380-d8d5-9491-8380b649c34b}\	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1516	rundll32.exe
1516	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1516	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1516	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4656 wrote to memory of 1516	4656	rundll32.exe	86
PID 4656 wrote to memory of 1516	4656	rundll32.exe	86
PID 4656 wrote to memory of 1516	4656	rundll32.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\900ebd010cfe1a4ba95c77121752af69.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4656
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\900ebd010cfe1a4ba95c77121752af69.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:1516

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

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\fgjzs.dll

Filesize
278KB

MD5
616d11b973de17a4b1d4bb4863ebbdcd

SHA1
377e980df168699835a918020eacbf94fb5aa678

SHA256
3a0bbc82ab438e0dbc54e27f00dd8b720b2f1bf02249ed7bf5cc019f455d8b2e

SHA512
ff126138d76df9247f03728657392905b3aeb7900cdd29e099e603d7964dcda1ddee788574234212efc10aae904050bdd17d056d46197ecf7e456d78f4937d6f

Download Submit
C:\Windows\SysWOW64\tuxng.dll

Filesize
265KB

MD5
89c991d92d2c53176ec39e1910591f99

SHA1
f4b86ddcaaeddcedeaf59522e963222c2afac47a

SHA256
77263faa06d3a4254c6ae84fa7da4d8d0cb094d0e81724cc83f794be797c0408

SHA512
555b0d46cd513d62f848a989ffff9c6509beb3d0717fbf179ed8d762b0e06e22dd1ce5ef315e4b6a5dd9d05b26bba7d8b1bff06049f40a5d6b5732197b4d5fea

Download Submit
C:\Windows\SysWOW64\tuxng.dll

Filesize
232KB

MD5
8d49f77a4ebce8a35e1e10de48762ded

SHA1
78a158fa6ebe03cc0382c68e49dd98577e35762a

SHA256
ee2adc6a10de7bd89c2878e61c5cac24a056703a397ca2545f36f44ab0293f4b

SHA512
33417d557ab046cd61c4733baac71188102bb2cf40f005858379164ee83886a8d3ce171f9dc19358251e8cc8f9323933332ccb82b85c1875ab906b24c2ce4a2b

Download Submit
memory/1516-16-0x0000000076F60000-0x0000000077050000-memory.dmp

Filesize
960KB

Download
memory/1516-13-0x0000000076F60000-0x0000000077050000-memory.dmp

Filesize
960KB

Download
memory/1516-15-0x00000000752D0000-0x000000007534A000-memory.dmp

Filesize
488KB

Download
memory/1516-0-0x0000000000910000-0x0000000000952000-memory.dmp

Filesize
264KB

Download
memory/1516-17-0x0000000076F60000-0x0000000077050000-memory.dmp

Filesize
960KB

Download
memory/1516-8-0x00000000752D0000-0x000000007534A000-memory.dmp

Filesize
488KB

Download
memory/1516-18-0x0000000000910000-0x0000000000952000-memory.dmp

Filesize
264KB

Download
memory/1516-19-0x00000000752D0000-0x000000007534A000-memory.dmp

Filesize
488KB

Download
memory/1516-20-0x0000000076F60000-0x0000000077050000-memory.dmp

Filesize
960KB

Download
memory/1516-22-0x0000000076F60000-0x0000000077050000-memory.dmp

Filesize
960KB

Download
memory/1516-23-0x0000000076F60000-0x0000000077050000-memory.dmp

Filesize
960KB

Download
memory/1516-24-0x0000000000910000-0x0000000000952000-memory.dmp

Filesize
264KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads