Malware Analysis Report

2025-01-22 08:33

Sample ID 241027-qctdyavrak
Target a529caa8563618b1cbdbb3e561cd105f674bb35c0490c3fc8be20b109edd7b07
SHA256 a529caa8563618b1cbdbb3e561cd105f674bb35c0490c3fc8be20b109edd7b07
Tags
stealc default9_pal credential_access discovery spyware stealer
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

a529caa8563618b1cbdbb3e561cd105f674bb35c0490c3fc8be20b109edd7b07

Threat Level: Known bad

The file a529caa8563618b1cbdbb3e561cd105f674bb35c0490c3fc8be20b109edd7b07 was found to be: Known bad.

Malicious Activity Summary

stealc default9_pal credential_access discovery spyware stealer

Stealc

Stealc family

Downloads MZ/PE file

Reads data files stored by FTP clients

Executes dropped EXE

Reads user/profile data of web browsers

Unsecured Credentials: Credentials In Files

Loads dropped DLL

Checks installed software on the system

Accesses cryptocurrency files/wallets, possible credential harvesting

System Location Discovery: System Language Discovery

System Network Configuration Discovery: Internet Connection Discovery

Program crash

Unsigned PE

Enumerates physical storage devices

Checks processor information in registry

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Runs ping.exe

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-27 13:07

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-27 13:07

Reported

2024-10-27 13:09

Platform

win7-20240903-en

Max time kernel

140s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a529caa8563618b1cbdbb3e561cd105f674bb35c0490c3fc8be20b109edd7b07.exe"

Signatures

Stealc

stealer stealc

Stealc family

stealc

Downloads MZ/PE file

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\AdminAECFCAAECB.exe N/A

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Unsecured Credentials: Credentials In Files

credential_access stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks installed software on the system

discovery

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\a529caa8563618b1cbdbb3e561cd105f674bb35c0490c3fc8be20b109edd7b07.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\AdminAECFCAAECB.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\PING.EXE N/A

System Network Configuration Discovery: Internet Connection Discovery

discovery
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\a529caa8563618b1cbdbb3e561cd105f674bb35c0490c3fc8be20b109edd7b07.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\a529caa8563618b1cbdbb3e561cd105f674bb35c0490c3fc8be20b109edd7b07.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:\Users\Admin\AppData\Local\Temp\a529caa8563618b1cbdbb3e561cd105f674bb35c0490c3fc8be20b109edd7b07.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2212 wrote to memory of 1700 N/A C:\Users\Admin\AppData\Local\Temp\a529caa8563618b1cbdbb3e561cd105f674bb35c0490c3fc8be20b109edd7b07.exe C:\Windows\SysWOW64\cmd.exe
PID 2212 wrote to memory of 1700 N/A C:\Users\Admin\AppData\Local\Temp\a529caa8563618b1cbdbb3e561cd105f674bb35c0490c3fc8be20b109edd7b07.exe C:\Windows\SysWOW64\cmd.exe
PID 2212 wrote to memory of 1700 N/A C:\Users\Admin\AppData\Local\Temp\a529caa8563618b1cbdbb3e561cd105f674bb35c0490c3fc8be20b109edd7b07.exe C:\Windows\SysWOW64\cmd.exe
PID 2212 wrote to memory of 1700 N/A C:\Users\Admin\AppData\Local\Temp\a529caa8563618b1cbdbb3e561cd105f674bb35c0490c3fc8be20b109edd7b07.exe C:\Windows\SysWOW64\cmd.exe
PID 1700 wrote to memory of 1424 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\AdminAECFCAAECB.exe
PID 1700 wrote to memory of 1424 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\AdminAECFCAAECB.exe
PID 1700 wrote to memory of 1424 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\AdminAECFCAAECB.exe
PID 1700 wrote to memory of 1424 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\AdminAECFCAAECB.exe
PID 1424 wrote to memory of 2760 N/A C:\Users\AdminAECFCAAECB.exe C:\Windows\SysWOW64\cmd.exe
PID 1424 wrote to memory of 2760 N/A C:\Users\AdminAECFCAAECB.exe C:\Windows\SysWOW64\cmd.exe
PID 1424 wrote to memory of 2760 N/A C:\Users\AdminAECFCAAECB.exe C:\Windows\SysWOW64\cmd.exe
PID 1424 wrote to memory of 2760 N/A C:\Users\AdminAECFCAAECB.exe C:\Windows\SysWOW64\cmd.exe
PID 2760 wrote to memory of 1760 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2760 wrote to memory of 1760 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2760 wrote to memory of 1760 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2760 wrote to memory of 1760 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

C:\Users\Admin\AppData\Local\Temp\a529caa8563618b1cbdbb3e561cd105f674bb35c0490c3fc8be20b109edd7b07.exe

"C:\Users\Admin\AppData\Local\Temp\a529caa8563618b1cbdbb3e561cd105f674bb35c0490c3fc8be20b109edd7b07.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c start "" "C:\Users\AdminAECFCAAECB.exe"

C:\Users\AdminAECFCAAECB.exe

"C:\Users\AdminAECFCAAECB.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /C ping 2.2.2.2 -n 1 -w 3000 > Nul & Del C:\Users\AdminAECFCAAECB.exe

C:\Windows\SysWOW64\PING.EXE

ping 2.2.2.2 -n 1 -w 3000

Network

Country Destination Domain Proto
RU 62.122.184.144:80 62.122.184.144 tcp
RU 176.113.115.215:80 176.113.115.215 tcp

Files

memory/2212-1-0x0000000002C90000-0x0000000002D90000-memory.dmp

memory/2212-2-0x0000000000400000-0x0000000000661000-memory.dmp

memory/2212-3-0x0000000000400000-0x0000000002B67000-memory.dmp

memory/2212-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

memory/2212-48-0x0000000002C90000-0x0000000002D90000-memory.dmp

\ProgramData\nss3.dll

MD5 1cc453cdf74f31e4d913ff9c10acdde2
SHA1 6e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
SHA512 dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

\ProgramData\mozglue.dll

MD5 c8fd9be83bc728cc04beffafc2907fe9
SHA1 95ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
SHA512 fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

memory/2212-61-0x0000000000400000-0x0000000000661000-memory.dmp

memory/2212-60-0x0000000000400000-0x0000000002B67000-memory.dmp

C:\ProgramData\DebugExit.xlsx

MD5 ef0ca6c52f5521acb8ff5c809a6a1fe4
SHA1 f749c778cd74e088dfc84e349d69f0bdfd9c63aa
SHA256 8fcc5a5e14bfa0b9c0b16b2bc89ab1b863248a9550fb7129ada7d7d9be90cc00
SHA512 526c1ebef62fa05a5ac1c1e7ebfef32302e5dbdf380b588ac0c2776efbb9a9cdf53a74dcb067fc5058f39631a6ed9ebd37d3b1c6f56d4ebd5e32930670bded69

C:\ProgramData\StepCompress.docx

MD5 26df9819edbf867893d52a4062e5daf7
SHA1 7a12353b12a839a9f5253100a329e90bb0a1cfe3
SHA256 710cf4544731542517f6b7dae73fdbb4016bbcef4b79e7714b0f97a5d5d6c1d3
SHA512 df4f067e33b548e4a39762ac6869c3837e5b251ee3f52dbc75e56fb2dbc1c8c1dd16e6f8451cafa7cc454fa315c2462fa5319c2925717399e63053fcb4c4a321

memory/2212-94-0x0000000000400000-0x0000000002B67000-memory.dmp

C:\Users\AdminAECFCAAECB.exe

MD5 6e83d578bf8f98adabc45eed176deb4e
SHA1 67fc4cc09614d12efadbba79de47fc47649ba31b
SHA256 2c8cd6f46dd4284d3e00addb5718dc444cc4c3001e0005a3e0d12c7aaff8d4f6
SHA512 799b8f4c87133e2aa2bc0bbe1bdb972e927e9d59060acee487622332b8528ab58ec1f0764c5b30200a32530264a6a280cf519ed90090c1b704d397679d6bfdbb

memory/1424-105-0x00000000012E0000-0x0000000001302000-memory.dmp

memory/2212-107-0x0000000000400000-0x0000000002B67000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-27 13:07

Reported

2024-10-27 13:09

Platform

win10v2004-20241007-en

Max time kernel

139s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a529caa8563618b1cbdbb3e561cd105f674bb35c0490c3fc8be20b109edd7b07.exe"

Signatures

Stealc

stealer stealc

Stealc family

stealc

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\a529caa8563618b1cbdbb3e561cd105f674bb35c0490c3fc8be20b109edd7b07.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a529caa8563618b1cbdbb3e561cd105f674bb35c0490c3fc8be20b109edd7b07.exe

"C:\Users\Admin\AppData\Local\Temp\a529caa8563618b1cbdbb3e561cd105f674bb35c0490c3fc8be20b109edd7b07.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2796 -ip 2796

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 1296

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
RU 62.122.184.144:80 62.122.184.144 tcp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 144.184.122.62.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 73.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp

Files

memory/2796-2-0x0000000002CE0000-0x0000000002D2E000-memory.dmp

memory/2796-1-0x0000000002D40000-0x0000000002E40000-memory.dmp

memory/2796-3-0x0000000000400000-0x0000000000661000-memory.dmp

memory/2796-5-0x0000000002CE0000-0x0000000002D2E000-memory.dmp

memory/2796-6-0x0000000000400000-0x0000000000661000-memory.dmp

memory/2796-4-0x0000000000400000-0x0000000002B67000-memory.dmp