Malware Analysis Report

2024-11-30 02:42

Sample ID 240407-t9dljahd43
Target fd91ac27792d0f75969dbba3bfa91ec6aa025bdf4b3f2e5e35bc7b22551e14d7
SHA256 fd91ac27792d0f75969dbba3bfa91ec6aa025bdf4b3f2e5e35bc7b22551e14d7
Tags
stealc 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

fd91ac27792d0f75969dbba3bfa91ec6aa025bdf4b3f2e5e35bc7b22551e14d7

Threat Level: Known bad

The file fd91ac27792d0f75969dbba3bfa91ec6aa025bdf4b3f2e5e35bc7b22551e14d7 was found to be: Known bad.

Malicious Activity Summary

stealc discovery spyware stealer

Stealc

Downloads MZ/PE file

Executes dropped EXE

Reads data files stored by FTP clients

Reads user/profile data of web browsers

Loads dropped DLL

Checks computer location settings

Checks installed software on the system

Accesses cryptocurrency files/wallets, possible credential harvesting

Enumerates physical storage devices

Program crash

Unsigned PE

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Runs ping.exe

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-07 16:45

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-07 16:45

Reported

2024-04-07 16:48

Platform

win10v2004-20240226-en

Max time kernel

148s

Max time network

185s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fd91ac27792d0f75969dbba3bfa91ec6aa025bdf4b3f2e5e35bc7b22551e14d7.exe"

Signatures

Stealc

stealer stealc

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\fd91ac27792d0f75969dbba3bfa91ec6aa025bdf4b3f2e5e35bc7b22551e14d7.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\KECFIDGCBF.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\KECFIDGCBF.exe N/A

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks installed software on the system

discovery

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\fd91ac27792d0f75969dbba3bfa91ec6aa025bdf4b3f2e5e35bc7b22551e14d7.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\fd91ac27792d0f75969dbba3bfa91ec6aa025bdf4b3f2e5e35bc7b22551e14d7.exe N/A

Runs ping.exe

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4092 wrote to memory of 2928 N/A C:\Users\Admin\AppData\Local\Temp\fd91ac27792d0f75969dbba3bfa91ec6aa025bdf4b3f2e5e35bc7b22551e14d7.exe C:\Windows\SysWOW64\cmd.exe
PID 4092 wrote to memory of 2928 N/A C:\Users\Admin\AppData\Local\Temp\fd91ac27792d0f75969dbba3bfa91ec6aa025bdf4b3f2e5e35bc7b22551e14d7.exe C:\Windows\SysWOW64\cmd.exe
PID 4092 wrote to memory of 2928 N/A C:\Users\Admin\AppData\Local\Temp\fd91ac27792d0f75969dbba3bfa91ec6aa025bdf4b3f2e5e35bc7b22551e14d7.exe C:\Windows\SysWOW64\cmd.exe
PID 2928 wrote to memory of 5096 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\KECFIDGCBF.exe
PID 2928 wrote to memory of 5096 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\KECFIDGCBF.exe
PID 2928 wrote to memory of 5096 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\KECFIDGCBF.exe
PID 5096 wrote to memory of 552 N/A C:\Users\Admin\AppData\Local\Temp\KECFIDGCBF.exe C:\Windows\SysWOW64\cmd.exe
PID 5096 wrote to memory of 552 N/A C:\Users\Admin\AppData\Local\Temp\KECFIDGCBF.exe C:\Windows\SysWOW64\cmd.exe
PID 5096 wrote to memory of 552 N/A C:\Users\Admin\AppData\Local\Temp\KECFIDGCBF.exe C:\Windows\SysWOW64\cmd.exe
PID 552 wrote to memory of 444 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 552 wrote to memory of 444 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 552 wrote to memory of 444 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

C:\Users\Admin\AppData\Local\Temp\fd91ac27792d0f75969dbba3bfa91ec6aa025bdf4b3f2e5e35bc7b22551e14d7.exe

"C:\Users\Admin\AppData\Local\Temp\fd91ac27792d0f75969dbba3bfa91ec6aa025bdf4b3f2e5e35bc7b22551e14d7.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\KECFIDGCBF.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4092 -ip 4092

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

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4092 -s 2408

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /C ping 2.2.2.2 -n 1 -w 3000 > Nul & Del C:\Users\Admin\AppData\Local\Temp\KECFIDGCBF.exe

C:\Windows\SysWOW64\PING.EXE

ping 2.2.2.2 -n 1 -w 3000

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
DE 185.172.128.209:80 185.172.128.209 tcp
US 8.8.8.8:53 209.128.172.185.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 17.143.109.104.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
DE 185.172.128.228:80 185.172.128.228 tcp
US 8.8.8.8:53 228.128.172.185.in-addr.arpa udp
US 8.8.8.8:53 15.173.189.20.in-addr.arpa udp

Files

memory/4092-1-0x0000000002E10000-0x0000000002F10000-memory.dmp

memory/4092-2-0x0000000002DE0000-0x0000000002E07000-memory.dmp

memory/4092-3-0x0000000000400000-0x0000000002B79000-memory.dmp

memory/4092-4-0x0000000000400000-0x0000000002B79000-memory.dmp

memory/4092-5-0x0000000061E00000-0x0000000061EF3000-memory.dmp

memory/4092-53-0x0000000000400000-0x0000000002B79000-memory.dmp

memory/4092-55-0x0000000002E10000-0x0000000002F10000-memory.dmp

memory/4092-56-0x0000000002DE0000-0x0000000002E07000-memory.dmp

C:\ProgramData\nss3.dll

MD5 1cc453cdf74f31e4d913ff9c10acdde2
SHA1 6e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
SHA512 dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

C:\ProgramData\mozglue.dll

MD5 c8fd9be83bc728cc04beffafc2907fe9
SHA1 95ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
SHA512 fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

memory/4092-77-0x0000000000400000-0x0000000002B79000-memory.dmp

memory/4092-81-0x0000000000400000-0x0000000002B79000-memory.dmp

memory/4092-91-0x0000000000400000-0x0000000002B79000-memory.dmp

C:\ProgramData\Are.docx

MD5 a33e5b189842c5867f46566bdbf7a095
SHA1 e1c06359f6a76da90d19e8fd95e79c832edb3196
SHA256 5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454
SHA512 f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

memory/4092-96-0x0000000000400000-0x0000000002B79000-memory.dmp

memory/4092-100-0x0000000000400000-0x0000000002B79000-memory.dmp

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

MD5 fe380780b5c35bd6d54541791151c2be
SHA1 7fe3a583cf91474c733f85cebf3c857682e269e1
SHA256 b64a84d1f88e4e78464a1901c1cb5bbd5f00bb73203d719e64e072157a087b53
SHA512 ba05ba8aa13c4bc1cf98fbf6c08b021e8b19354098e0397fc8e1e5d3dcce367c1063203f24e50d0973193f6535681d0a43486e5dade5d112853b7a2fe8739b6c

memory/4092-108-0x0000000000400000-0x0000000002B79000-memory.dmp

memory/5096-109-0x00000000727C0000-0x0000000072F70000-memory.dmp

memory/5096-110-0x0000000000CD0000-0x0000000000CF0000-memory.dmp

memory/5096-114-0x00000000056A0000-0x00000000056B0000-memory.dmp

memory/5096-116-0x00000000727C0000-0x0000000072F70000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-07 16:45

Reported

2024-04-07 16:47

Platform

win11-20240221-en

Max time kernel

146s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fd91ac27792d0f75969dbba3bfa91ec6aa025bdf4b3f2e5e35bc7b22551e14d7.exe"

Signatures

Stealc

stealer stealc

Downloads MZ/PE file

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\IDHCGDAFBK.exe N/A

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks installed software on the system

discovery

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\fd91ac27792d0f75969dbba3bfa91ec6aa025bdf4b3f2e5e35bc7b22551e14d7.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\fd91ac27792d0f75969dbba3bfa91ec6aa025bdf4b3f2e5e35bc7b22551e14d7.exe N/A

Runs ping.exe

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3672 wrote to memory of 4368 N/A C:\Users\Admin\AppData\Local\Temp\fd91ac27792d0f75969dbba3bfa91ec6aa025bdf4b3f2e5e35bc7b22551e14d7.exe C:\Windows\SysWOW64\cmd.exe
PID 3672 wrote to memory of 4368 N/A C:\Users\Admin\AppData\Local\Temp\fd91ac27792d0f75969dbba3bfa91ec6aa025bdf4b3f2e5e35bc7b22551e14d7.exe C:\Windows\SysWOW64\cmd.exe
PID 3672 wrote to memory of 4368 N/A C:\Users\Admin\AppData\Local\Temp\fd91ac27792d0f75969dbba3bfa91ec6aa025bdf4b3f2e5e35bc7b22551e14d7.exe C:\Windows\SysWOW64\cmd.exe
PID 4368 wrote to memory of 2016 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\IDHCGDAFBK.exe
PID 4368 wrote to memory of 2016 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\IDHCGDAFBK.exe
PID 4368 wrote to memory of 2016 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\IDHCGDAFBK.exe
PID 2016 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\IDHCGDAFBK.exe C:\Windows\SysWOW64\cmd.exe
PID 2016 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\IDHCGDAFBK.exe C:\Windows\SysWOW64\cmd.exe
PID 2016 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\IDHCGDAFBK.exe C:\Windows\SysWOW64\cmd.exe
PID 2632 wrote to memory of 1948 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2632 wrote to memory of 1948 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2632 wrote to memory of 1948 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

C:\Users\Admin\AppData\Local\Temp\fd91ac27792d0f75969dbba3bfa91ec6aa025bdf4b3f2e5e35bc7b22551e14d7.exe

"C:\Users\Admin\AppData\Local\Temp\fd91ac27792d0f75969dbba3bfa91ec6aa025bdf4b3f2e5e35bc7b22551e14d7.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\IDHCGDAFBK.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3672 -ip 3672

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

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3672 -s 2560

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /C ping 2.2.2.2 -n 1 -w 3000 > Nul & Del C:\Users\Admin\AppData\Local\Temp\IDHCGDAFBK.exe

C:\Windows\SysWOW64\PING.EXE

ping 2.2.2.2 -n 1 -w 3000

Network

Country Destination Domain Proto
DE 185.172.128.209:80 185.172.128.209 tcp
US 8.8.8.8:53 209.128.172.185.in-addr.arpa udp
DE 185.172.128.228:80 185.172.128.228 tcp
US 8.8.8.8:53 228.128.172.185.in-addr.arpa udp

Files

memory/3672-1-0x0000000002C60000-0x0000000002D60000-memory.dmp

memory/3672-2-0x00000000049D0000-0x00000000049F7000-memory.dmp

memory/3672-3-0x0000000000400000-0x0000000002B79000-memory.dmp

memory/3672-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

C:\ProgramData\nss3.dll

MD5 1cc453cdf74f31e4d913ff9c10acdde2
SHA1 6e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
SHA512 dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

C:\ProgramData\mozglue.dll

MD5 c8fd9be83bc728cc04beffafc2907fe9
SHA1 95ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
SHA512 fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

C:\ProgramData\Are.docx

MD5 a33e5b189842c5867f46566bdbf7a095
SHA1 e1c06359f6a76da90d19e8fd95e79c832edb3196
SHA256 5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454
SHA512 f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

memory/3672-84-0x0000000000400000-0x0000000002B79000-memory.dmp

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

MD5 fe380780b5c35bd6d54541791151c2be
SHA1 7fe3a583cf91474c733f85cebf3c857682e269e1
SHA256 b64a84d1f88e4e78464a1901c1cb5bbd5f00bb73203d719e64e072157a087b53
SHA512 ba05ba8aa13c4bc1cf98fbf6c08b021e8b19354098e0397fc8e1e5d3dcce367c1063203f24e50d0973193f6535681d0a43486e5dade5d112853b7a2fe8739b6c

memory/2016-91-0x0000000071A30000-0x00000000721E1000-memory.dmp

memory/2016-92-0x00000000003F0000-0x0000000000410000-memory.dmp

memory/2016-93-0x0000000004F20000-0x0000000004F30000-memory.dmp

memory/3672-95-0x0000000000400000-0x0000000002B79000-memory.dmp

memory/2016-97-0x0000000071A30000-0x00000000721E1000-memory.dmp