Malware Analysis Report

2024-11-30 04:13

Sample ID 240408-bcylbsbh6t
Target tmp
SHA256 6fc36b8c227db7dd12779478f486f6e73bc4c66333a66bc8ece2053a3d0574db
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

6fc36b8c227db7dd12779478f486f6e73bc4c66333a66bc8ece2053a3d0574db

Threat Level: Known bad

The file tmp was found to be: Known bad.

Malicious Activity Summary

stealc discovery spyware stealer

Stealc

Downloads MZ/PE file

Reads data files stored by FTP clients

Executes dropped EXE

Checks computer location settings

Reads user/profile data of web browsers

Loads dropped DLL

Checks installed software on the system

Accesses cryptocurrency files/wallets, possible credential harvesting

Enumerates physical storage devices

Unsigned PE

Program crash

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Runs ping.exe

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-08 01:00

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-08 01:00

Reported

2024-04-08 01:03

Platform

win7-20240220-en

Max time kernel

122s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\tmp.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\HDHCFIJEGC.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmd.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\tmp.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\tmp.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\tmp.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2088 wrote to memory of 2344 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\SysWOW64\cmd.exe
PID 2088 wrote to memory of 2344 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\SysWOW64\cmd.exe
PID 2088 wrote to memory of 2344 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\SysWOW64\cmd.exe
PID 2088 wrote to memory of 2344 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\SysWOW64\cmd.exe
PID 2088 wrote to memory of 1620 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\SysWOW64\cmd.exe
PID 2088 wrote to memory of 1620 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\SysWOW64\cmd.exe
PID 2088 wrote to memory of 1620 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\SysWOW64\cmd.exe
PID 2088 wrote to memory of 1620 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\SysWOW64\cmd.exe
PID 2344 wrote to memory of 1732 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\HDHCFIJEGC.exe
PID 2344 wrote to memory of 1732 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\HDHCFIJEGC.exe
PID 2344 wrote to memory of 1732 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\HDHCFIJEGC.exe
PID 2344 wrote to memory of 1732 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\HDHCFIJEGC.exe
PID 1732 wrote to memory of 2328 N/A C:\Users\Admin\AppData\Local\Temp\HDHCFIJEGC.exe C:\Windows\SysWOW64\cmd.exe
PID 1732 wrote to memory of 2328 N/A C:\Users\Admin\AppData\Local\Temp\HDHCFIJEGC.exe C:\Windows\SysWOW64\cmd.exe
PID 1732 wrote to memory of 2328 N/A C:\Users\Admin\AppData\Local\Temp\HDHCFIJEGC.exe C:\Windows\SysWOW64\cmd.exe
PID 1732 wrote to memory of 2328 N/A C:\Users\Admin\AppData\Local\Temp\HDHCFIJEGC.exe C:\Windows\SysWOW64\cmd.exe
PID 2328 wrote to memory of 688 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2328 wrote to memory of 688 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2328 wrote to memory of 688 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2328 wrote to memory of 688 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

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

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

C:\Windows\SysWOW64\cmd.exe

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

C:\Windows\SysWOW64\cmd.exe

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

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

"C:\Users\Admin\AppData\Local\Temp\HDHCFIJEGC.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\Admin\AppData\Local\Temp\HDHCFIJEGC.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
DE 185.172.128.228:80 185.172.128.228 tcp

Files

memory/2088-2-0x0000000000220000-0x0000000000247000-memory.dmp

memory/2088-1-0x0000000000810000-0x0000000000910000-memory.dmp

memory/2088-3-0x0000000000400000-0x000000000063B000-memory.dmp

memory/2088-4-0x0000000000400000-0x000000000063B000-memory.dmp

memory/2088-6-0x0000000000810000-0x0000000000910000-memory.dmp

memory/2088-7-0x0000000061E00000-0x0000000061EF3000-memory.dmp

memory/2088-36-0x0000000000400000-0x000000000063B000-memory.dmp

memory/2088-40-0x0000000000400000-0x000000000063B000-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/2088-72-0x0000000000400000-0x000000000063B000-memory.dmp

memory/2088-73-0x0000000000810000-0x0000000000910000-memory.dmp

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

MD5 fe380780b5c35bd6d54541791151c2be
SHA1 7fe3a583cf91474c733f85cebf3c857682e269e1
SHA256 b64a84d1f88e4e78464a1901c1cb5bbd5f00bb73203d719e64e072157a087b53
SHA512 ba05ba8aa13c4bc1cf98fbf6c08b021e8b19354098e0397fc8e1e5d3dcce367c1063203f24e50d0973193f6535681d0a43486e5dade5d112853b7a2fe8739b6c

memory/1732-110-0x00000000736D0000-0x0000000073DBE000-memory.dmp

memory/1732-108-0x0000000000A80000-0x0000000000AA0000-memory.dmp

memory/1620-112-0x00000000002E0000-0x00000000002E1000-memory.dmp

memory/1732-115-0x0000000004CF0000-0x0000000004D30000-memory.dmp

memory/1732-117-0x00000000736D0000-0x0000000073DBE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-08 01:00

Reported

2024-04-08 01:03

Platform

win10v2004-20240226-en

Max time kernel

92s

Max time network

103s

Command Line

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

Signatures

Stealc

stealer stealc

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\tmp.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\CAKKKFBFID.exe N/A

Executes dropped EXE

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

Loads dropped DLL

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

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\tmp.exe

Checks processor information in registry

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

Processes

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

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

C:\Windows\SysWOW64\cmd.exe

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3440 -ip 3440

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

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3440 -s 2416

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\CAKKKFBFID.exe

C:\Windows\SysWOW64\PING.EXE

ping 2.2.2.2 -n 1 -w 3000

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
DE 185.172.128.209:80 185.172.128.209 tcp
US 8.8.8.8:53 81.171.91.138.in-addr.arpa udp
US 8.8.8.8:53 209.128.172.185.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.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 91.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

memory/3440-1-0x0000000000820000-0x0000000000920000-memory.dmp

memory/3440-2-0x00000000007D0000-0x00000000007F7000-memory.dmp

memory/3440-3-0x0000000000400000-0x000000000063B000-memory.dmp

memory/3440-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

memory/3440-43-0x0000000000400000-0x000000000063B000-memory.dmp

memory/3440-47-0x0000000000400000-0x000000000063B000-memory.dmp

memory/3440-48-0x0000000000820000-0x0000000000920000-memory.dmp

memory/3440-55-0x0000000000400000-0x000000000063B000-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/3440-88-0x0000000000400000-0x000000000063B000-memory.dmp

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

MD5 fe380780b5c35bd6d54541791151c2be
SHA1 7fe3a583cf91474c733f85cebf3c857682e269e1
SHA256 b64a84d1f88e4e78464a1901c1cb5bbd5f00bb73203d719e64e072157a087b53
SHA512 ba05ba8aa13c4bc1cf98fbf6c08b021e8b19354098e0397fc8e1e5d3dcce367c1063203f24e50d0973193f6535681d0a43486e5dade5d112853b7a2fe8739b6c

memory/2460-95-0x00000000001A0000-0x00000000001C0000-memory.dmp

memory/2460-96-0x0000000072A70000-0x0000000073220000-memory.dmp

memory/2460-97-0x0000000004B30000-0x0000000004B40000-memory.dmp

memory/2460-100-0x0000000072A70000-0x0000000073220000-memory.dmp

memory/3440-101-0x0000000000400000-0x000000000063B000-memory.dmp