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Overview
overview
9Static
static
7WeChatSetup.exe
windows7-x64
4WeChatSetup.exe
windows10-2004-x64
4$PLUGINSDI...LL.dll
windows7-x64
3$PLUGINSDI...LL.dll
windows10-2004-x64
3$PLUGINSDI...em.dll
windows7-x64
3$PLUGINSDI...em.dll
windows10-2004-x64
3$PLUGINSDI...ll.dll
windows7-x64
1$PLUGINSDI...ll.dll
windows10-2004-x64
1$PLUGINSDI...st.dll
windows7-x64
3$PLUGINSDI...st.dll
windows10-2004-x64
3Uninstall.exe
windows7-x64
4Uninstall.exe
windows10-2004-x64
4WeChat.exe
windows7-x64
9WeChat.exe
windows10-2004-x64
9WechatAppLauncher.exe
windows7-x64
1WechatAppLauncher.exe
windows10-2004-x64
1[3.9.11.19...dk.dll
windows7-x64
1[3.9.11.19...dk.dll
windows10-2004-x64
1[3.9.11.19...ll.exe
windows7-x64
4[3.9.11.19...ll.exe
windows10-2004-x64
4[3.9.11.19...ne.dll
windows7-x64
1[3.9.11.19...ne.dll
windows10-2004-x64
1[3.9.11.19...at.exe
windows7-x64
9[3.9.11.19...at.exe
windows10-2004-x64
9[3.9.11.19...xt.exe
windows7-x64
1[3.9.11.19...xt.exe
windows10-2004-x64
3[3.9.11.19...ce.dll
windows7-x64
1[3.9.11.19...ce.dll
windows10-2004-x64
1[3.9.11.19...pt.exe
windows7-x64
3[3.9.11.19...pt.exe
windows10-2004-x64
3[3.9.11.19...te.exe
windows7-x64
3[3.9.11.19...te.exe
windows10-2004-x64
3Analysis
-
max time kernel
121s -
max time network
147s -
platform
windows7_x64 -
resource
win7-20240705-en -
resource tags
arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system -
submitted
10/07/2024, 05:35
Behavioral task
behavioral1
Sample
WeChatSetup.exe
Resource
win7-20240705-en
Behavioral task
behavioral2
Sample
WeChatSetup.exe
Resource
win10v2004-20240709-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/FindProcDLL.dll
Resource
win7-20240705-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/FindProcDLL.dll
Resource
win10v2004-20240709-en
Behavioral task
behavioral5
Sample
$PLUGINSDIR/System.dll
Resource
win7-20240704-en
Behavioral task
behavioral6
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20240704-en
Behavioral task
behavioral7
Sample
$PLUGINSDIR/WeChatInstallDll.dll
Resource
win7-20240705-en
Behavioral task
behavioral8
Sample
$PLUGINSDIR/WeChatInstallDll.dll
Resource
win10v2004-20240709-en
Behavioral task
behavioral9
Sample
$PLUGINSDIR/nsInstallAssist.dll
Resource
win7-20240705-en
Behavioral task
behavioral10
Sample
$PLUGINSDIR/nsInstallAssist.dll
Resource
win10v2004-20240709-en
Behavioral task
behavioral11
Sample
Uninstall.exe
Resource
win7-20240704-en
Behavioral task
behavioral12
Sample
Uninstall.exe
Resource
win10v2004-20240709-en
Behavioral task
behavioral13
Sample
WeChat.exe
Resource
win7-20240704-en
Behavioral task
behavioral14
Sample
WeChat.exe
Resource
win10v2004-20240709-en
Behavioral task
behavioral15
Sample
WechatAppLauncher.exe
Resource
win7-20240708-en
Behavioral task
behavioral16
Sample
WechatAppLauncher.exe
Resource
win10v2004-20240709-en
Behavioral task
behavioral17
Sample
[3.9.11.19]/ConfSdk.dll
Resource
win7-20240704-en
Behavioral task
behavioral18
Sample
[3.9.11.19]/ConfSdk.dll
Resource
win10v2004-20240704-en
Behavioral task
behavioral19
Sample
[3.9.11.19]/Uninstall.exe
Resource
win7-20240705-en
Behavioral task
behavioral20
Sample
[3.9.11.19]/Uninstall.exe
Resource
win10v2004-20240709-en
Behavioral task
behavioral21
Sample
[3.9.11.19]/VoipEngine.dll
Resource
win7-20240704-en
Behavioral task
behavioral22
Sample
[3.9.11.19]/VoipEngine.dll
Resource
win10v2004-20240709-en
Behavioral task
behavioral23
Sample
[3.9.11.19]/WeChat.exe
Resource
win7-20240704-en
Behavioral task
behavioral24
Sample
[3.9.11.19]/WeChat.exe
Resource
win10v2004-20240709-en
Behavioral task
behavioral25
Sample
[3.9.11.19]/WeChatExt.exe
Resource
win7-20240704-en
Behavioral task
behavioral26
Sample
[3.9.11.19]/WeChatExt.exe
Resource
win10v2004-20240709-en
Behavioral task
behavioral27
Sample
[3.9.11.19]/WeChatResource.dll
Resource
win7-20240705-en
Behavioral task
behavioral28
Sample
[3.9.11.19]/WeChatResource.dll
Resource
win10v2004-20240709-en
Behavioral task
behavioral29
Sample
[3.9.11.19]/WeChatSpt.exe
Resource
win7-20240708-en
Behavioral task
behavioral30
Sample
[3.9.11.19]/WeChatSpt.exe
Resource
win10v2004-20240709-en
Behavioral task
behavioral31
Sample
[3.9.11.19]/WeChatUpdate.exe
Resource
win7-20240705-en
Behavioral task
behavioral32
Sample
[3.9.11.19]/WeChatUpdate.exe
Resource
win10v2004-20240709-en
General
-
Target
$PLUGINSDIR/WeChatInstallDll.dll
-
Size
3.6MB
-
MD5
334057ab4993b56c8c663b0224b94567
-
SHA1
09a428a52707171f425d9047e1b89bde1d5966dd
-
SHA256
3f829f072de5cc33b160f15f62558c86f75f7f96a2673234c9a48c3164f067d1
-
SHA512
3b40102c35a946a2ac804b680c61cabe0782b1d334d98d2f7aec5bf3946c2ab80098b0399eb69a1d7aca37073e11dacb6876c977415082fea480d9e4f5762d03
-
SSDEEP
98304:HDEkRLBPfvgP9bjyYfg+nT8/6F7x85V+dL:HDTLpgjhoCF7xkV+5
Malware Config
Signatures
-
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2876 wrote to memory of 2896 2876 rundll32.exe 30 PID 2876 wrote to memory of 2896 2876 rundll32.exe 30 PID 2876 wrote to memory of 2896 2876 rundll32.exe 30 PID 2876 wrote to memory of 2896 2876 rundll32.exe 30 PID 2876 wrote to memory of 2896 2876 rundll32.exe 30 PID 2876 wrote to memory of 2896 2876 rundll32.exe 30 PID 2876 wrote to memory of 2896 2876 rundll32.exe 30
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\WeChatInstallDll.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2876 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\WeChatInstallDll.dll,#12⤵PID:2896
-