Malware Analysis Report

2024-11-30 21:30

Sample ID 231231-h9bamaffek
Target 2d50ae18b0ea232b507b61539be1b0e6
SHA256 83b6668223b750b9b48a1d39e67c16428a64348689dbbe326557ee617e31d243
Tags
dridex botnet evasion payload persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

83b6668223b750b9b48a1d39e67c16428a64348689dbbe326557ee617e31d243

Threat Level: Known bad

The file 2d50ae18b0ea232b507b61539be1b0e6 was found to be: Known bad.

Malicious Activity Summary

dridex botnet evasion payload persistence trojan

Dridex

Dridex Shellcode

Loads dropped DLL

Executes dropped EXE

Adds Run key to start application

Checks whether UAC is enabled

Unsigned PE

Uses Task Scheduler COM API

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-31 07:25

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-31 07:25

Reported

2024-01-03 17:52

Platform

win7-20231129-en

Max time kernel

150s

Max time network

122s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\2d50ae18b0ea232b507b61539be1b0e6.dll

Signatures

Dridex

botnet dridex

Dridex Shellcode

botnet payload
Description Indicator Process Target
N/A N/A N/A N/A

Loads dropped DLL

Description Indicator Process Target
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N/A N/A C:\Users\Admin\AppData\Local\aD2Xsw2\icardagt.exe N/A
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N/A N/A C:\Users\Admin\AppData\Local\Wm2x7h\wisptis.exe N/A
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N/A N/A C:\Users\Admin\AppData\Local\ylSaCNK\consent.exe N/A
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Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\Groztcac = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Recent\\AutomaticDestinations\\LWqxJcVr\\wisptis.exe" N/A N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\aD2Xsw2\icardagt.exe N/A
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Wm2x7h\wisptis.exe N/A
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\ylSaCNK\consent.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\system32\regsvr32.exe N/A
N/A N/A C:\Windows\system32\regsvr32.exe N/A
N/A N/A C:\Windows\system32\regsvr32.exe N/A
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Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1372 wrote to memory of 2760 N/A N/A C:\Windows\system32\icardagt.exe
PID 1372 wrote to memory of 2760 N/A N/A C:\Windows\system32\icardagt.exe
PID 1372 wrote to memory of 2760 N/A N/A C:\Windows\system32\icardagt.exe
PID 1372 wrote to memory of 2596 N/A N/A C:\Users\Admin\AppData\Local\aD2Xsw2\icardagt.exe
PID 1372 wrote to memory of 2596 N/A N/A C:\Users\Admin\AppData\Local\aD2Xsw2\icardagt.exe
PID 1372 wrote to memory of 2596 N/A N/A C:\Users\Admin\AppData\Local\aD2Xsw2\icardagt.exe
PID 1372 wrote to memory of 2888 N/A N/A C:\Windows\system32\wisptis.exe
PID 1372 wrote to memory of 2888 N/A N/A C:\Windows\system32\wisptis.exe
PID 1372 wrote to memory of 2888 N/A N/A C:\Windows\system32\wisptis.exe
PID 1372 wrote to memory of 1848 N/A N/A C:\Users\Admin\AppData\Local\Wm2x7h\wisptis.exe
PID 1372 wrote to memory of 1848 N/A N/A C:\Users\Admin\AppData\Local\Wm2x7h\wisptis.exe
PID 1372 wrote to memory of 1848 N/A N/A C:\Users\Admin\AppData\Local\Wm2x7h\wisptis.exe
PID 1372 wrote to memory of 1912 N/A N/A C:\Windows\system32\consent.exe
PID 1372 wrote to memory of 1912 N/A N/A C:\Windows\system32\consent.exe
PID 1372 wrote to memory of 1912 N/A N/A C:\Windows\system32\consent.exe
PID 1372 wrote to memory of 2040 N/A N/A C:\Users\Admin\AppData\Local\ylSaCNK\consent.exe
PID 1372 wrote to memory of 2040 N/A N/A C:\Users\Admin\AppData\Local\ylSaCNK\consent.exe
PID 1372 wrote to memory of 2040 N/A N/A C:\Users\Admin\AppData\Local\ylSaCNK\consent.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\2d50ae18b0ea232b507b61539be1b0e6.dll

C:\Users\Admin\AppData\Local\aD2Xsw2\icardagt.exe

C:\Users\Admin\AppData\Local\aD2Xsw2\icardagt.exe

C:\Windows\system32\icardagt.exe

C:\Windows\system32\icardagt.exe

C:\Users\Admin\AppData\Local\Wm2x7h\wisptis.exe

C:\Users\Admin\AppData\Local\Wm2x7h\wisptis.exe

C:\Windows\system32\wisptis.exe

C:\Windows\system32\wisptis.exe

C:\Windows\system32\consent.exe

C:\Windows\system32\consent.exe

C:\Users\Admin\AppData\Local\ylSaCNK\consent.exe

C:\Users\Admin\AppData\Local\ylSaCNK\consent.exe

Network

N/A

Files

memory/2512-1-0x0000000140000000-0x0000000140160000-memory.dmp

memory/2512-0-0x0000000000640000-0x0000000000647000-memory.dmp

memory/1372-4-0x0000000077AD6000-0x0000000077AD7000-memory.dmp

memory/1372-16-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-29-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-36-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-38-0x0000000077D40000-0x0000000077D42000-memory.dmp

memory/1372-37-0x0000000077BE1000-0x0000000077BE2000-memory.dmp

memory/1372-52-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-47-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-28-0x0000000002A10000-0x0000000002A17000-memory.dmp

memory/1372-56-0x0000000140000000-0x0000000140160000-memory.dmp

memory/2596-66-0x0000000140000000-0x0000000140161000-memory.dmp

memory/2596-70-0x0000000140000000-0x0000000140161000-memory.dmp

memory/2596-65-0x0000000000230000-0x0000000000237000-memory.dmp

memory/1372-27-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-26-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-25-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-24-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-23-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-22-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-21-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-20-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-19-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-18-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-17-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-15-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-14-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-13-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-12-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-11-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-10-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-9-0x0000000140000000-0x0000000140160000-memory.dmp

memory/2512-8-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-7-0x0000000140000000-0x0000000140160000-memory.dmp

memory/1372-5-0x0000000002A30000-0x0000000002A31000-memory.dmp

memory/1848-94-0x0000000140000000-0x0000000140161000-memory.dmp

memory/1848-92-0x0000000000100000-0x0000000000107000-memory.dmp

memory/2040-115-0x0000000000110000-0x0000000000117000-memory.dmp

memory/2040-118-0x0000000140000000-0x0000000140161000-memory.dmp

memory/1372-144-0x0000000077AD6000-0x0000000077AD7000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-31 07:25

Reported

2024-01-03 17:51

Platform

win10v2004-20231215-en

Max time kernel

10s

Max time network

155s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\2d50ae18b0ea232b507b61539be1b0e6.dll

Signatures

Dridex

botnet dridex

Dridex Shellcode

botnet payload
Description Indicator Process Target
N/A N/A N/A N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Hwtkseldaftjsj = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\SystemCertificates\\My\\CTLs\\kNeSJiRKFl\\rdpshell.exe" N/A N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\DiCsH2pU\WFS.exe N/A
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\zb2L8d\rdpshell.exe N/A
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\xMjj\msra.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\system32\regsvr32.exe N/A
N/A N/A C:\Windows\system32\regsvr32.exe N/A
N/A N/A C:\Windows\system32\regsvr32.exe N/A
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Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3392 wrote to memory of 4260 N/A N/A C:\Windows\system32\WFS.exe
PID 3392 wrote to memory of 4260 N/A N/A C:\Windows\system32\WFS.exe
PID 3392 wrote to memory of 3368 N/A N/A C:\Users\Admin\AppData\Local\DiCsH2pU\WFS.exe
PID 3392 wrote to memory of 3368 N/A N/A C:\Users\Admin\AppData\Local\DiCsH2pU\WFS.exe
PID 3392 wrote to memory of 2532 N/A N/A C:\Windows\system32\rdpshell.exe
PID 3392 wrote to memory of 2532 N/A N/A C:\Windows\system32\rdpshell.exe
PID 3392 wrote to memory of 1428 N/A N/A C:\Users\Admin\AppData\Local\zb2L8d\rdpshell.exe
PID 3392 wrote to memory of 1428 N/A N/A C:\Users\Admin\AppData\Local\zb2L8d\rdpshell.exe
PID 3392 wrote to memory of 3596 N/A N/A C:\Windows\system32\Narrator.exe
PID 3392 wrote to memory of 3596 N/A N/A C:\Windows\system32\Narrator.exe
PID 3392 wrote to memory of 3940 N/A N/A C:\Windows\system32\msra.exe
PID 3392 wrote to memory of 3940 N/A N/A C:\Windows\system32\msra.exe
PID 3392 wrote to memory of 3588 N/A N/A C:\Users\Admin\AppData\Local\xMjj\msra.exe
PID 3392 wrote to memory of 3588 N/A N/A C:\Users\Admin\AppData\Local\xMjj\msra.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\2d50ae18b0ea232b507b61539be1b0e6.dll

C:\Windows\system32\WFS.exe

C:\Windows\system32\WFS.exe

C:\Windows\system32\Narrator.exe

C:\Windows\system32\Narrator.exe

C:\Users\Admin\AppData\Local\zb2L8d\rdpshell.exe

C:\Users\Admin\AppData\Local\zb2L8d\rdpshell.exe

C:\Windows\system32\rdpshell.exe

C:\Windows\system32\rdpshell.exe

C:\Users\Admin\AppData\Local\xMjj\msra.exe

C:\Users\Admin\AppData\Local\xMjj\msra.exe

C:\Windows\system32\msra.exe

C:\Windows\system32\msra.exe

C:\Users\Admin\AppData\Local\ZToxXMer\Narrator.exe

C:\Users\Admin\AppData\Local\ZToxXMer\Narrator.exe

C:\Users\Admin\AppData\Local\DiCsH2pU\WFS.exe

C:\Users\Admin\AppData\Local\DiCsH2pU\WFS.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 189.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 148.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 20.231.121.79:80 tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 195.233.44.23.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 16.234.44.23.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 183.1.37.23.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 181.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 193.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 64.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 8.8.8.8:53 42.134.221.88.in-addr.arpa udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 200.178.17.96.in-addr.arpa udp

Files

memory/3492-1-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3492-0-0x0000000000EF0000-0x0000000000EF7000-memory.dmp

memory/3492-7-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-9-0x00007FF94F1CA000-0x00007FF94F1CB000-memory.dmp

memory/3392-18-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-27-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-29-0x0000000000CD0000-0x0000000000CD7000-memory.dmp

memory/3392-36-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-37-0x00007FF94F6E0000-0x00007FF94F6F0000-memory.dmp

memory/3392-46-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-48-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-28-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3368-57-0x0000000140000000-0x0000000140161000-memory.dmp

memory/3368-63-0x0000000140000000-0x0000000140161000-memory.dmp

memory/3368-60-0x000001FA966A0000-0x000001FA966A7000-memory.dmp

memory/1428-77-0x00000271416F0000-0x00000271416F7000-memory.dmp

memory/1428-80-0x0000000140000000-0x0000000140161000-memory.dmp

memory/3588-105-0x0000000140000000-0x0000000140161000-memory.dmp

memory/3588-99-0x000001C1B2850000-0x000001C1B2857000-memory.dmp

memory/3392-26-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-25-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-24-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-23-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-22-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-21-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-20-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-19-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-17-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-16-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-15-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-14-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-13-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-12-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-11-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-10-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-8-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-6-0x0000000140000000-0x0000000140160000-memory.dmp

memory/3392-4-0x0000000000D10000-0x0000000000D11000-memory.dmp