Malware Analysis Report

2025-05-05 21:37

Sample ID 201020-wstkz279an
Target doc_pack-679286334.xls
SHA256 67cf07881ff311682e4f0b40edfb2eb95c5843d06dd95a78468968a971e11ca9
Tags
macro trojan banker stealer qakbot
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

67cf07881ff311682e4f0b40edfb2eb95c5843d06dd95a78468968a971e11ca9

Threat Level: Known bad

The file doc_pack-679286334.xls was found to be: Known bad.

Malicious Activity Summary

macro trojan banker stealer qakbot

Qakbot/Qbot

Suspicious Office macro

Office macro that triggers on suspicious action

Executes dropped EXE

Loads dropped DLL

Process spawned suspicious child process

Office loads VBA resources, possible macro or embedded object present

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: AddClipboardFormatListener

Checks processor information in registry

Enumerates system info in registry

Creates scheduled task(s)

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2020-10-20 23:06

Signatures

Office macro that triggers on suspicious action

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

Suspicious Office macro

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

Analysis: behavioral1

Detonation Overview

Submitted

2020-10-20 23:06

Reported

2020-10-20 23:13

Platform

win7v200722

Max time kernel

126s

Max time network

21s

Command Line

"C:\Program Files\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\doc_pack-679286334.xls

Signatures

Qakbot/Qbot

trojan banker stealer qakbot

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\COsuv\Wegerb\szvMhegn.exe N/A
N/A N/A C:\COsuv\Wegerb\szvMhegn.exe N/A

Office loads VBA resources, possible macro or embedded object present

Creates scheduled task(s)

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

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Program Files\Microsoft Office\Office14\EXCEL.EXE N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1240 wrote to memory of 1920 N/A C:\Program Files\Microsoft Office\Office14\EXCEL.EXE C:\COsuv\Wegerb\szvMhegn.exe
PID 1240 wrote to memory of 1920 N/A C:\Program Files\Microsoft Office\Office14\EXCEL.EXE C:\COsuv\Wegerb\szvMhegn.exe
PID 1240 wrote to memory of 1920 N/A C:\Program Files\Microsoft Office\Office14\EXCEL.EXE C:\COsuv\Wegerb\szvMhegn.exe
PID 1240 wrote to memory of 1920 N/A C:\Program Files\Microsoft Office\Office14\EXCEL.EXE C:\COsuv\Wegerb\szvMhegn.exe
PID 1920 wrote to memory of 1948 N/A C:\COsuv\Wegerb\szvMhegn.exe C:\COsuv\Wegerb\szvMhegn.exe
PID 1920 wrote to memory of 1948 N/A C:\COsuv\Wegerb\szvMhegn.exe C:\COsuv\Wegerb\szvMhegn.exe
PID 1920 wrote to memory of 1948 N/A C:\COsuv\Wegerb\szvMhegn.exe C:\COsuv\Wegerb\szvMhegn.exe
PID 1920 wrote to memory of 1948 N/A C:\COsuv\Wegerb\szvMhegn.exe C:\COsuv\Wegerb\szvMhegn.exe
PID 1920 wrote to memory of 1148 N/A C:\COsuv\Wegerb\szvMhegn.exe C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe
PID 1920 wrote to memory of 1148 N/A C:\COsuv\Wegerb\szvMhegn.exe C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe
PID 1920 wrote to memory of 1148 N/A C:\COsuv\Wegerb\szvMhegn.exe C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe
PID 1920 wrote to memory of 1148 N/A C:\COsuv\Wegerb\szvMhegn.exe C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe
PID 1920 wrote to memory of 852 N/A C:\COsuv\Wegerb\szvMhegn.exe C:\Windows\SysWOW64\schtasks.exe
PID 1920 wrote to memory of 852 N/A C:\COsuv\Wegerb\szvMhegn.exe C:\Windows\SysWOW64\schtasks.exe
PID 1920 wrote to memory of 852 N/A C:\COsuv\Wegerb\szvMhegn.exe C:\Windows\SysWOW64\schtasks.exe
PID 1920 wrote to memory of 852 N/A C:\COsuv\Wegerb\szvMhegn.exe C:\Windows\SysWOW64\schtasks.exe
PID 1148 wrote to memory of 1004 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe
PID 1148 wrote to memory of 1004 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe
PID 1148 wrote to memory of 1004 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe
PID 1148 wrote to memory of 1004 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe
PID 1148 wrote to memory of 1848 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe C:\Windows\SysWOW64\explorer.exe
PID 1148 wrote to memory of 1848 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe C:\Windows\SysWOW64\explorer.exe
PID 1148 wrote to memory of 1848 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe C:\Windows\SysWOW64\explorer.exe
PID 1148 wrote to memory of 1848 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe C:\Windows\SysWOW64\explorer.exe
PID 1148 wrote to memory of 1848 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe C:\Windows\SysWOW64\explorer.exe
PID 932 wrote to memory of 1840 N/A C:\Windows\system32\taskeng.exe C:\COsuv\Wegerb\szvMhegn.exe
PID 932 wrote to memory of 1840 N/A C:\Windows\system32\taskeng.exe C:\COsuv\Wegerb\szvMhegn.exe
PID 932 wrote to memory of 1840 N/A C:\Windows\system32\taskeng.exe C:\COsuv\Wegerb\szvMhegn.exe
PID 932 wrote to memory of 1840 N/A C:\Windows\system32\taskeng.exe C:\COsuv\Wegerb\szvMhegn.exe

Processes

C:\Program Files\Microsoft Office\Office14\EXCEL.EXE

"C:\Program Files\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\doc_pack-679286334.xls

C:\COsuv\Wegerb\szvMhegn.exe

"C:\COsuv\Wegerb\szvMhegn.exe"

C:\COsuv\Wegerb\szvMhegn.exe

C:\COsuv\Wegerb\szvMhegn.exe /C

C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe

C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\system32\schtasks.exe" /Create /RU "NT AUTHORITY\SYSTEM" /tn ystrjdzb /tr "\"C:\COsuv\Wegerb\szvMhegn.exe\" /I ystrjdzb" /SC ONCE /Z /ST 01:09 /ET 01:21

C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe

C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe /C

C:\Windows\SysWOW64\explorer.exe

C:\Windows\SysWOW64\explorer.exe

C:\Windows\system32\taskeng.exe

taskeng.exe {9CE38167-CB34-407E-9ED3-9FFFF8016B91} S-1-5-18:NT AUTHORITY\System:Service:

C:\COsuv\Wegerb\szvMhegn.exe

C:\COsuv\Wegerb\szvMhegn.exe /I ystrjdzb

Network

Country Destination Domain Proto
N/A 8.8.8.8:53 blog.vokasidev.com udp
N/A 68.65.123.245:80 blog.vokasidev.com tcp

Files

memory/1808-2-0x000007FEF7860000-0x000007FEF7ADA000-memory.dmp

memory/1920-3-0x0000000000000000-mapping.dmp

C:\COsuv\Wegerb\szvMhegn.exe

MD5 cd1d9f1f22120d080cb52057a7d9fb96
SHA1 d428fda3e1be91a246628fca76f5d0fe8d53e04d
SHA256 76ca0f3d7cc3c4231e242c4a90ecfd5da244d4df64cfc3c95da1ce321e1c3852
SHA512 4613044a3671f11652c338bd1474826c3614152aa04c9118cb2bd643519679948a0eff22d4b33fe732144a24618174d729f099b4b964aa9d505b6a72552c533f

memory/1240-5-0x0000000006ED0000-0x0000000006ED4000-memory.dmp

memory/1240-6-0x0000000005ED0000-0x0000000005ED4000-memory.dmp

memory/1240-9-0x0000000004CD0000-0x0000000004CD4000-memory.dmp

C:\COsuv\Wegerb\szvMhegn.exe

MD5 cd1d9f1f22120d080cb52057a7d9fb96
SHA1 d428fda3e1be91a246628fca76f5d0fe8d53e04d
SHA256 76ca0f3d7cc3c4231e242c4a90ecfd5da244d4df64cfc3c95da1ce321e1c3852
SHA512 4613044a3671f11652c338bd1474826c3614152aa04c9118cb2bd643519679948a0eff22d4b33fe732144a24618174d729f099b4b964aa9d505b6a72552c533f

C:\COsuv\Wegerb\szvMhegn.exe

MD5 cd1d9f1f22120d080cb52057a7d9fb96
SHA1 d428fda3e1be91a246628fca76f5d0fe8d53e04d
SHA256 76ca0f3d7cc3c4231e242c4a90ecfd5da244d4df64cfc3c95da1ce321e1c3852
SHA512 4613044a3671f11652c338bd1474826c3614152aa04c9118cb2bd643519679948a0eff22d4b33fe732144a24618174d729f099b4b964aa9d505b6a72552c533f

memory/1948-11-0x0000000000000000-mapping.dmp

memory/1948-13-0x0000000002550000-0x0000000002561000-memory.dmp

\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe

MD5 cd1d9f1f22120d080cb52057a7d9fb96
SHA1 d428fda3e1be91a246628fca76f5d0fe8d53e04d
SHA256 76ca0f3d7cc3c4231e242c4a90ecfd5da244d4df64cfc3c95da1ce321e1c3852
SHA512 4613044a3671f11652c338bd1474826c3614152aa04c9118cb2bd643519679948a0eff22d4b33fe732144a24618174d729f099b4b964aa9d505b6a72552c533f

memory/1148-16-0x0000000000000000-mapping.dmp

\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe

MD5 cd1d9f1f22120d080cb52057a7d9fb96
SHA1 d428fda3e1be91a246628fca76f5d0fe8d53e04d
SHA256 76ca0f3d7cc3c4231e242c4a90ecfd5da244d4df64cfc3c95da1ce321e1c3852
SHA512 4613044a3671f11652c338bd1474826c3614152aa04c9118cb2bd643519679948a0eff22d4b33fe732144a24618174d729f099b4b964aa9d505b6a72552c533f

C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe

MD5 cd1d9f1f22120d080cb52057a7d9fb96
SHA1 d428fda3e1be91a246628fca76f5d0fe8d53e04d
SHA256 76ca0f3d7cc3c4231e242c4a90ecfd5da244d4df64cfc3c95da1ce321e1c3852
SHA512 4613044a3671f11652c338bd1474826c3614152aa04c9118cb2bd643519679948a0eff22d4b33fe732144a24618174d729f099b4b964aa9d505b6a72552c533f

memory/852-18-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe

MD5 cd1d9f1f22120d080cb52057a7d9fb96
SHA1 d428fda3e1be91a246628fca76f5d0fe8d53e04d
SHA256 76ca0f3d7cc3c4231e242c4a90ecfd5da244d4df64cfc3c95da1ce321e1c3852
SHA512 4613044a3671f11652c338bd1474826c3614152aa04c9118cb2bd643519679948a0eff22d4b33fe732144a24618174d729f099b4b964aa9d505b6a72552c533f

C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.exe

MD5 cd1d9f1f22120d080cb52057a7d9fb96
SHA1 d428fda3e1be91a246628fca76f5d0fe8d53e04d
SHA256 76ca0f3d7cc3c4231e242c4a90ecfd5da244d4df64cfc3c95da1ce321e1c3852
SHA512 4613044a3671f11652c338bd1474826c3614152aa04c9118cb2bd643519679948a0eff22d4b33fe732144a24618174d729f099b4b964aa9d505b6a72552c533f

memory/1004-20-0x0000000000000000-mapping.dmp

memory/1004-22-0x0000000002460000-0x0000000002471000-memory.dmp

memory/1148-23-0x00000000003C0000-0x00000000003F7000-memory.dmp

memory/1848-24-0x0000000000000000-mapping.dmp

\??\PIPE\wkssvc

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

C:\Users\Admin\AppData\Roaming\Microsoft\Fqeelr\pymudt.dat

MD5 44cf3d2efeaf0bd6f5a2b8e2ee4ff3b9
SHA1 48237068deb9d624b0313155d71ad618a9ecba02
SHA256 61bc0db9410474c3a0d69c9804e7398afb1c85bc038b1c2ea4d8837b31ff0dd0
SHA512 b95f5232a0f98e77f72b195ccf0f5d952fc08ee39aa6f9865419e8be724289f6b52b46811c49269ef9449359ab2ffa5a6949506d9cc9c87f2177b23a566ae8cd

C:\COsuv\Wegerb\szvMhegn.exe

MD5 cd1d9f1f22120d080cb52057a7d9fb96
SHA1 d428fda3e1be91a246628fca76f5d0fe8d53e04d
SHA256 76ca0f3d7cc3c4231e242c4a90ecfd5da244d4df64cfc3c95da1ce321e1c3852
SHA512 4613044a3671f11652c338bd1474826c3614152aa04c9118cb2bd643519679948a0eff22d4b33fe732144a24618174d729f099b4b964aa9d505b6a72552c533f

memory/1840-27-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2020-10-20 23:06

Reported

2020-10-20 23:13

Platform

win10v200722

Max time kernel

134s

Max time network

156s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\doc_pack-679286334.xls"

Signatures

Process spawned suspicious child process

Description Indicator Process Target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process N/A C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Enumerates system info in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
N/A N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
N/A N/A C:\Windows\system32\dwwin.exe N/A
N/A N/A C:\Windows\system32\dwwin.exe N/A

Processes

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\doc_pack-679286334.xls"

C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE

"C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE" -x -s 4668

C:\Windows\system32\dwwin.exe

C:\Windows\system32\dwwin.exe -x -s 4668

Network

N/A

Files

memory/2164-0-0x00007FF96C920000-0x00007FF96CFE6000-memory.dmp

memory/2164-1-0x000002704BA2E000-0x000002704BA33000-memory.dmp

memory/2164-2-0x000002704BA2E000-0x000002704BA33000-memory.dmp

memory/3828-3-0x0000000000000000-mapping.dmp

memory/200-4-0x0000000000000000-mapping.dmp

memory/200-5-0x000001BD69B10000-0x000001BD69B11000-memory.dmp

memory/200-6-0x000001BD69B10000-0x000001BD69B11000-memory.dmp

memory/200-8-0x000001BD6A300000-0x000001BD6A301000-memory.dmp

memory/200-11-0x000001BD6A580000-0x000001BD6A581000-memory.dmp

memory/200-12-0x000001BD6A580000-0x000001BD6A581000-memory.dmp

memory/200-13-0x000001BD6A580000-0x000001BD6A581000-memory.dmp