e2814ac7471b8ef1755b1ab59ac33c5aaef564572de3b81c48642c264ba75ba3

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
29/12/2023, 18:28

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General

Target

0078e9690bb5a6f2a96d3edad73e53ab.dll
Size

231KB
MD5

0078e9690bb5a6f2a96d3edad73e53ab
SHA1

6e93f437397575166c7e0cf0b3b540e3490ed058
SHA256

e2814ac7471b8ef1755b1ab59ac33c5aaef564572de3b81c48642c264ba75ba3
SHA512

d3073ad8f68a6a582e25179ce5e049b0f4163cdc7d01d6024667427bfa8156ae008458e0101134b82a0e1d4606857caa0ca640082529c4c79aa4f4e8ddaaa200
SSDEEP

3072:zysX0WxnWd/IkmL+PViEbmzwtz/wk8YWbK:mskd/IkmuVfyWdMK

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\jgulz = "{34cd3c7f-bc45-019a-cd56-bc45b4f760a4}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
2940	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{34cd3c7f-bc45-019a-cd56-bc45b4f760a4}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{34cd3c7f-bc45-019a-cd56-bc45b4f760a4}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{34cd3c7f-bc45-019a-cd56-bc45b4f760a4}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{34cd3c7f-bc45-019a-cd56-bc45b4f760a4}\InprocServer32\ = "C:\\Windows\\SysWow64\\ebpgu.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{34cd3c7f-bc45-019a-cd56-bc45b4f760a4}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2940	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2940	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2940	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2892 wrote to memory of 2940	2892	rundll32.exe	28
PID 2892 wrote to memory of 2940	2892	rundll32.exe	28
PID 2892 wrote to memory of 2940	2892	rundll32.exe	28
PID 2892 wrote to memory of 2940	2892	rundll32.exe	28
PID 2892 wrote to memory of 2940	2892	rundll32.exe	28
PID 2892 wrote to memory of 2940	2892	rundll32.exe	28
PID 2892 wrote to memory of 2940	2892	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0078e9690bb5a6f2a96d3edad73e53ab.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2892
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\0078e9690bb5a6f2a96d3edad73e53ab.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:2940

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\wthym.dll

Filesize
391KB

MD5
7a4f10a5f80d472bf5d42e0f09283774

SHA1
64cf7f9abb4e9920c2d8d16bf8e049fa07af3c92

SHA256
83857dc3cd4e5bb2bd2a0beae5bc3df329e89c004184a0f090159438140719a6

SHA512
ab64395082fda7de94b48870ff0265c6efa0ce7ad079122de4e9e7e82b0137f33a61cccd7fd0877062925da7a9f7956190b060ec8705293eccfaaa027228f073

Download Submit
memory/2940-0-0x00000000001C0000-0x0000000000203000-memory.dmp

Filesize
268KB

Download
memory/2940-2-0x00000000001C0000-0x0000000000203000-memory.dmp

Filesize
268KB

Download
memory/2940-9-0x0000000075ED0000-0x0000000075F70000-memory.dmp

Filesize
640KB

Download
memory/2940-11-0x0000000075ED0000-0x0000000075F70000-memory.dmp

Filesize
640KB

Download
memory/2940-10-0x00000000001C0000-0x0000000000203000-memory.dmp

Filesize
268KB

Download