e45b3deb7121e1d884cc14dbd849d74f8d4ef722716ed430b53d4c91f9de0a4b

Analysis

max time kernel
120s
max time network
120s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
29-12-2023 22:57

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General

Target

064970d99645afed20982110268639a4.dll
Size

236KB
MD5

064970d99645afed20982110268639a4
SHA1

0b9cccf9d130169ad2d16d145f074a240900ad19
SHA256

e45b3deb7121e1d884cc14dbd849d74f8d4ef722716ed430b53d4c91f9de0a4b
SHA512

53316803f251ac1140df7bade265c42bfd8bf52e2c4bf301eba17d149806b39419242c0337a9780f22584bd5763c2bcd364167e2114c177f985786f516d6393c
SSDEEP

3072:SeqmgHwlaazN9U3J+P0wFp+bLrt2wkkI8:+Qj9U3jwO3rt5T

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\nqerm = "{7a8901d8-f201-4756-0312-f201895084a7}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
3040	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7a8901d8-f201-4756-0312-f201895084a7}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7a8901d8-f201-4756-0312-f201895084a7}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7a8901d8-f201-4756-0312-f201895084a7}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7a8901d8-f201-4756-0312-f201895084a7}\InprocServer32\ = "C:\\Windows\\SysWow64\\ilzmh.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7a8901d8-f201-4756-0312-f201895084a7}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3040	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3040	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3040	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3020 wrote to memory of 3040	3020	rundll32.exe	14
PID 3020 wrote to memory of 3040	3020	rundll32.exe	14
PID 3020 wrote to memory of 3040	3020	rundll32.exe	14
PID 3020 wrote to memory of 3040	3020	rundll32.exe	14
PID 3020 wrote to memory of 3040	3020	rundll32.exe	14
PID 3020 wrote to memory of 3040	3020	rundll32.exe	14
PID 3020 wrote to memory of 3040	3020	rundll32.exe	14

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\064970d99645afed20982110268639a4.dll,#1
1⤵
- 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:3040

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\064970d99645afed20982110268639a4.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3020

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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\adrez.dll

Filesize
384KB

MD5
343d2ba10b5b4bbd616a4775d551082c

SHA1
9a93bf9baf65f45d7f3b1e65eacb393ea24d091c

SHA256
9d37ac2d48a17ff6776e09e2042860af2a286bb9a6509abc00926393a4e822bf

SHA512
141a3455cc788472a89f8bc40387634cd04ea4f786519acd94e0ba536dfa2c3e4f4f50748b05b3bd92c92744ea0ed31e6a8ba335dcfe46f1bdf8421ec03f2e7f

Download Submit
memory/3040-0-0x00000000001D0000-0x0000000000214000-memory.dmp

Filesize
272KB

Download
memory/3040-9-0x0000000075EA0000-0x0000000075F40000-memory.dmp

Filesize
640KB

Download
memory/3040-8-0x00000000001D0000-0x0000000000214000-memory.dmp

Filesize
272KB

Download
memory/3040-11-0x0000000075EA0000-0x0000000075F40000-memory.dmp

Filesize
640KB

Download
memory/3040-10-0x00000000001D0000-0x0000000000214000-memory.dmp

Filesize
272KB

Download