Malware Analysis Report

2024-11-30 22:52

Sample ID 230511-t8k9zsah7x
Target wekrjl.dll
SHA256 f20a64541672d97ec70118b0c67818619dba66b6913c94b324507f5b801746f0
Tags
qakbot bb27 1683816541 banker stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

f20a64541672d97ec70118b0c67818619dba66b6913c94b324507f5b801746f0

Threat Level: Known bad

The file wekrjl.dll was found to be: Known bad.

Malicious Activity Summary

qakbot bb27 1683816541 banker stealer trojan

Qakbot/Qbot

Drops file in System32 directory

Unsigned PE

Runs ping.exe

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Gathers network information

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-05-11 16:43

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-05-11 16:43

Reported

2023-05-11 16:46

Platform

win7-20230220-en

Max time kernel

128s

Max time network

152s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\wekrjl.dll,#1

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1680 wrote to memory of 1604 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1680 wrote to memory of 1604 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1680 wrote to memory of 1604 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1680 wrote to memory of 1604 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1680 wrote to memory of 1604 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1680 wrote to memory of 1604 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1680 wrote to memory of 1604 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\wekrjl.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\wekrjl.dll,#1

C:\Windows\system32\verclsid.exe

"C:\Windows\system32\verclsid.exe" /S /C {0B2C9183-C9FA-4C53-AE21-C900B0C39965} /I {0C733A8A-2A1C-11CE-ADE5-00AA0044773D} /X 0x401

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2023-05-11 16:43

Reported

2023-05-11 16:53

Platform

win10v2004-20230220-en

Max time kernel

571s

Max time network

585s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\wekrjl.dll,#1

Signatures

Qakbot/Qbot

trojan banker stealer qakbot

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\System32\%AppData%\Microsoft\Windows\Start Menu\Programs\Windows PowerShell\Windows PowerShell.lnk C:\Windows\system32\WindowsPowerShell\v1.0\PowerShell.exe N/A

Gathers network information

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\ipconfig.exe N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\ping.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\system32\WindowsPowerShell\v1.0\PowerShell.exe N/A
N/A N/A C:\Windows\system32\WindowsPowerShell\v1.0\PowerShell.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A
N/A N/A C:\Windows\SysWOW64\wermgr.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\system32\WindowsPowerShell\v1.0\PowerShell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\system32\msiexec.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3784 wrote to memory of 3248 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3784 wrote to memory of 3248 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3784 wrote to memory of 3248 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1444 wrote to memory of 2472 N/A C:\Windows\system32\WindowsPowerShell\v1.0\PowerShell.exe C:\Windows\system32\rundll32.exe
PID 1444 wrote to memory of 2472 N/A C:\Windows\system32\WindowsPowerShell\v1.0\PowerShell.exe C:\Windows\system32\rundll32.exe
PID 2472 wrote to memory of 4372 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2472 wrote to memory of 4372 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2472 wrote to memory of 4372 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4372 wrote to memory of 4004 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\wermgr.exe
PID 4372 wrote to memory of 4004 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\wermgr.exe
PID 4372 wrote to memory of 4004 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\wermgr.exe
PID 4372 wrote to memory of 4004 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\wermgr.exe
PID 4372 wrote to memory of 4004 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\wermgr.exe
PID 4004 wrote to memory of 2944 N/A C:\Windows\SysWOW64\wermgr.exe C:\Windows\SysWOW64\ping.exe
PID 4004 wrote to memory of 2944 N/A C:\Windows\SysWOW64\wermgr.exe C:\Windows\SysWOW64\ping.exe
PID 4004 wrote to memory of 2944 N/A C:\Windows\SysWOW64\wermgr.exe C:\Windows\SysWOW64\ping.exe
PID 4004 wrote to memory of 3384 N/A C:\Windows\SysWOW64\wermgr.exe C:\Windows\SysWOW64\ipconfig.exe
PID 4004 wrote to memory of 3384 N/A C:\Windows\SysWOW64\wermgr.exe C:\Windows\SysWOW64\ipconfig.exe
PID 4004 wrote to memory of 3384 N/A C:\Windows\SysWOW64\wermgr.exe C:\Windows\SysWOW64\ipconfig.exe
PID 4004 wrote to memory of 4204 N/A C:\Windows\SysWOW64\wermgr.exe C:\Windows\SysWOW64\whoami.exe
PID 4004 wrote to memory of 4204 N/A C:\Windows\SysWOW64\wermgr.exe C:\Windows\SysWOW64\whoami.exe
PID 4004 wrote to memory of 4204 N/A C:\Windows\SysWOW64\wermgr.exe C:\Windows\SysWOW64\whoami.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\wekrjl.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\wekrjl.dll,#1

C:\Windows\System32\rundll32.exe

C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding

C:\Windows\system32\WindowsPowerShell\v1.0\PowerShell.exe

"PowerShell.exe" -noexit -command Set-Location -literalPath 'C:\Users\Admin\AppData\Local\Temp'

C:\Windows\system32\rundll32.exe

"C:\Windows\system32\rundll32.exe" .\wekrjl.dll,print

C:\Windows\SysWOW64\rundll32.exe

"C:\Windows\system32\rundll32.exe" .\wekrjl.dll,print

C:\Windows\SysWOW64\wermgr.exe

C:\Windows\SysWOW64\wermgr.exe

C:\Windows\SysWOW64\ping.exe

ping -n 3 yahoo.com

C:\Windows\SysWOW64\ipconfig.exe

ipconfig /all

C:\Windows\SysWOW64\whoami.exe

whoami /all

C:\Windows\system32\msiexec.exe

C:\Windows\system32\msiexec.exe /V

Network

Country Destination Domain Proto
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 1.77.109.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 2.36.159.162.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 yahoo.com udp
US 8.8.8.8:53 76.38.195.152.in-addr.arpa udp
US 8.8.8.8:53 121.252.72.23.in-addr.arpa udp
US 8.8.8.8:53 google.com udp
NL 142.250.179.142:443 google.com tcp
US 67.177.41.245:443 67.177.41.245 tcp
US 8.8.8.8:53 142.179.250.142.in-addr.arpa udp
US 8.8.8.8:53 196.168.217.172.in-addr.arpa udp
US 8.8.8.8:53 35.36.251.142.in-addr.arpa udp
US 8.8.8.8:53 245.41.177.67.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3yekvyha.akq.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/1444-140-0x0000015034AF0000-0x0000015034B12000-memory.dmp

memory/1444-145-0x000001504D250000-0x000001504D294000-memory.dmp

memory/1444-146-0x000001504D2F0000-0x000001504D300000-memory.dmp

memory/1444-147-0x000001504D2F0000-0x000001504D300000-memory.dmp

memory/1444-148-0x000001504D2F0000-0x000001504D300000-memory.dmp

memory/1444-149-0x000001504E2C0000-0x000001504E336000-memory.dmp

memory/1444-150-0x0000015034FF0000-0x000001503500E000-memory.dmp

memory/4372-152-0x00000000022D0000-0x00000000022D3000-memory.dmp

memory/4372-153-0x0000000010000000-0x0000000010024000-memory.dmp

memory/1444-158-0x000001504D2F0000-0x000001504D300000-memory.dmp

memory/1444-159-0x000001504D2F0000-0x000001504D300000-memory.dmp

memory/1444-160-0x000001504D2F0000-0x000001504D300000-memory.dmp

memory/4004-161-0x0000000000ED0000-0x0000000000EF4000-memory.dmp

memory/4004-162-0x0000000000ED0000-0x0000000000EF4000-memory.dmp

memory/4004-163-0x0000000000ED0000-0x0000000000EF4000-memory.dmp

memory/4004-165-0x0000000000ED0000-0x0000000000EF4000-memory.dmp

memory/4004-166-0x0000000000ED0000-0x0000000000EF4000-memory.dmp

memory/4004-167-0x0000000000ED0000-0x0000000000EF4000-memory.dmp

memory/4004-168-0x0000000000ED0000-0x0000000000EF4000-memory.dmp

memory/4004-169-0x0000000000ED0000-0x0000000000EF4000-memory.dmp

memory/4004-170-0x0000000000ED0000-0x0000000000EF4000-memory.dmp

memory/4004-173-0x0000000000ED0000-0x0000000000EF4000-memory.dmp

memory/4004-174-0x0000000000ED0000-0x0000000000EF4000-memory.dmp

memory/4004-176-0x0000000000ED0000-0x0000000000EF4000-memory.dmp

memory/4004-188-0x0000000000ED0000-0x0000000000EF4000-memory.dmp