Malware Analysis Report

2024-09-11 16:55

Sample ID 240613-2pr77atdne
Target 3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651
SHA256 3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651
Tags
stealc default12 discovery spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651

Threat Level: Known bad

The file 3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651 was found to be: Known bad.

Malicious Activity Summary

stealc default12 discovery spyware stealer

Stealc

Downloads MZ/PE file

Reads data files stored by FTP clients

Executes dropped EXE

Reads user/profile data of web browsers

Loads dropped DLL

Checks installed software on the system

Accesses cryptocurrency files/wallets, possible credential harvesting

Unsigned PE

Enumerates physical storage devices

Checks processor information in registry

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Unsecured Credentials
T1552
Credentials In Files
T1552.001
Discovery
TA0007
Query Registry
T1012
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Data from Local System
T1005
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-13 22:45

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-13 22:45

Reported

2024-06-13 22:50

Platform

win7-20240220-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.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\IEHDAFHDHC.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.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\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1684 wrote to memory of 2452 N/A C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.exe C:\Windows\SysWOW64\cmd.exe
PID 1684 wrote to memory of 2452 N/A C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.exe C:\Windows\SysWOW64\cmd.exe
PID 1684 wrote to memory of 2452 N/A C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.exe C:\Windows\SysWOW64\cmd.exe
PID 1684 wrote to memory of 2452 N/A C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.exe C:\Windows\SysWOW64\cmd.exe
PID 2452 wrote to memory of 824 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\IEHDAFHDHC.exe
PID 2452 wrote to memory of 824 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\IEHDAFHDHC.exe
PID 2452 wrote to memory of 824 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\IEHDAFHDHC.exe
PID 2452 wrote to memory of 824 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\IEHDAFHDHC.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.exe

"C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.exe"

C:\Windows\SysWOW64\cmd.exe

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

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

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

Network

Country Destination Domain Proto
DE 185.172.128.170:80 185.172.128.170 tcp
DE 185.172.128.159:80 185.172.128.159 tcp

Files

memory/1684-1-0x0000000001CE0000-0x0000000001DE0000-memory.dmp

memory/1684-3-0x0000000000400000-0x000000000063B000-memory.dmp

memory/1684-2-0x0000000000220000-0x0000000000247000-memory.dmp

memory/1684-4-0x0000000061E00000-0x0000000061EF3000-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/1684-71-0x0000000000400000-0x000000000063B000-memory.dmp

memory/1684-72-0x0000000001CE0000-0x0000000001DE0000-memory.dmp

memory/1684-70-0x0000000000400000-0x0000000001BBF000-memory.dmp

\Users\Admin\AppData\Local\Temp\IEHDAFHDHC.exe

MD5 6c93fc68e2f01c20fb81af24470b790c
SHA1 d5927b38a32e30afcf5a658612a8266476fc4ad8
SHA256 64a71b664d76641b35dac312161cb356b3b3b5f0b45c9d88c8afa547b4902580
SHA512 355e9677121ef17cf8c398f0c17399776d206c62014080a2c62682e1152ea0729dcc6e233358dcd6bae009b07e3db936d4b18eb37d6e7ebc2fe9cf8d827c4ade

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 22:45

Reported

2024-06-13 22:50

Platform

win10-20240611-en

Max time kernel

231s

Max time network

308s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.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\ECAEGHIJEH.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.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\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2840 wrote to memory of 3808 N/A C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.exe C:\Windows\SysWOW64\cmd.exe
PID 2840 wrote to memory of 3808 N/A C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.exe C:\Windows\SysWOW64\cmd.exe
PID 2840 wrote to memory of 3808 N/A C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.exe C:\Windows\SysWOW64\cmd.exe
PID 3808 wrote to memory of 5064 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\ECAEGHIJEH.exe
PID 3808 wrote to memory of 5064 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\ECAEGHIJEH.exe
PID 3808 wrote to memory of 5064 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\Temp\ECAEGHIJEH.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.exe

"C:\Users\Admin\AppData\Local\Temp\3f87671166107008ce7b37877b6f85da7d594d9b4f042a533cbb5a96a689f651.exe"

C:\Windows\SysWOW64\cmd.exe

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

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

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

Network

Country Destination Domain Proto
DE 185.172.128.170:80 185.172.128.170 tcp
US 8.8.8.8:53 170.128.172.185.in-addr.arpa udp
DE 185.172.128.159:80 185.172.128.159 tcp
US 8.8.8.8:53 159.128.172.185.in-addr.arpa udp
US 8.8.8.8:53 201.201.50.20.in-addr.arpa udp

Files

memory/2840-3-0x0000000000400000-0x000000000063B000-memory.dmp

memory/2840-2-0x0000000001E00000-0x0000000001E27000-memory.dmp

memory/2840-1-0x0000000001E90000-0x0000000001F90000-memory.dmp

memory/2840-4-0x0000000061E00000-0x0000000061EF3000-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/2840-65-0x0000000000400000-0x0000000001BBF000-memory.dmp

C:\ProgramData\Are.docx

MD5 a33e5b189842c5867f46566bdbf7a095
SHA1 e1c06359f6a76da90d19e8fd95e79c832edb3196
SHA256 5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454
SHA512 f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

memory/2840-82-0x0000000000400000-0x000000000063B000-memory.dmp

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

MD5 6c93fc68e2f01c20fb81af24470b790c
SHA1 d5927b38a32e30afcf5a658612a8266476fc4ad8
SHA256 64a71b664d76641b35dac312161cb356b3b3b5f0b45c9d88c8afa547b4902580
SHA512 355e9677121ef17cf8c398f0c17399776d206c62014080a2c62682e1152ea0729dcc6e233358dcd6bae009b07e3db936d4b18eb37d6e7ebc2fe9cf8d827c4ade

memory/2840-81-0x0000000000400000-0x0000000001BBF000-memory.dmp