dd14d8c8bf76437503cc28ae10cdbf2d7a914833c5a111b368bd1a7433ec7201

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
29/12/2023, 21:52

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General

Target

04e388933eab8600c45e65e2470c6b33.dll
Size

236KB
MD5

04e388933eab8600c45e65e2470c6b33
SHA1

6ab499dd9e9d14578db0bed8fb7ca63a4a08e1d2
SHA256

dd14d8c8bf76437503cc28ae10cdbf2d7a914833c5a111b368bd1a7433ec7201
SHA512

175f89cfcf465ebad4d7752d18ced332e927f2e13b9de40220305cd259c5db9f14e1b3a4480d8fe41db92116556230de650a16b1bc8282490c1fb581cf9f3864
SSDEEP

1536:1dKaTHN2ymZ0ofa5uQm4V7HG8ldINh+RhFtFftCgpcGO5lPf/XG8GmGwktbG:1Y4tIQG8XAmbFfaGc1fawk1G

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\cjsss = "{a94447f1-21cc-7611-32dd-21cccf79cb41}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
2028	rundll32.exe

Drops file in System32 directory 2 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{a94447f1-21cc-7611-32dd-21cccf79cb41}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{a94447f1-21cc-7611-32dd-21cccf79cb41}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{a94447f1-21cc-7611-32dd-21cccf79cb41}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{a94447f1-21cc-7611-32dd-21cccf79cb41}\InprocServer32\ = "C:\\Windows\\SysWow64\\xennn.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{a94447f1-21cc-7611-32dd-21cccf79cb41}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2468 wrote to memory of 2028	2468	rundll32.exe	14
PID 2468 wrote to memory of 2028	2468	rundll32.exe	14
PID 2468 wrote to memory of 2028	2468	rundll32.exe	14
PID 2468 wrote to memory of 2028	2468	rundll32.exe	14
PID 2468 wrote to memory of 2028	2468	rundll32.exe	14
PID 2468 wrote to memory of 2028	2468	rundll32.exe	14
PID 2468 wrote to memory of 2028	2468	rundll32.exe	14

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\04e388933eab8600c45e65e2470c6b33.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
PID:2028

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\04e388933eab8600c45e65e2470c6b33.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2468

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

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Downloads

\Windows\SysWOW64\pwfff.dll

Filesize
3KB

MD5
d2ea601e249809349bf317e4e97451e4

SHA1
3b18e9ec802bc60c8e8a48bd1dc2933a658e7551

SHA256
62092009e080eabd26386bd6d1b4a064f6c1389a12b21a8e33b6ff7e682c34bc

SHA512
31ec1c407e8a68596b95c7ba92268d6674c9ae274223c4be6bc92f2ba6beb15d6a1e15acf4b386d8017f7ee1a463ff50b72f1879e71f7f3845c718410d9b80d1

Download Submit
memory/2028-1-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2028-7-0x0000000076680000-0x0000000076720000-memory.dmp

Filesize
640KB

Download
memory/2028-6-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads