Malware Analysis Report

2024-10-18 23:09

Sample ID 240522-sdwlssfc3v
Target Signatureformrequest#54526.com.exe
SHA256 86acf99a01780d400bcf8429879d515401ec2dfb15554ce91dc95ee5494508d6
Tags
guloader collection downloader 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: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

86acf99a01780d400bcf8429879d515401ec2dfb15554ce91dc95ee5494508d6

Threat Level: Known bad

The file Signatureformrequest#54526.com.exe was found to be: Known bad.

Malicious Activity Summary

guloader collection downloader spyware stealer

Guloader,Cloudeye

NirSoft WebBrowserPassView

NirSoft MailPassView

Nirsoft

Reads user/profile data of web browsers

Loads dropped DLL

Accesses Microsoft Outlook accounts

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of NtCreateThreadExHideFromDebugger

Suspicious use of SetThreadContext

Unsigned PE

Program crash

Enumerates physical storage devices

NSIS installer

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-22 15:01

Signatures

Unsigned PE

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

NSIS installer

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-22 15:01

Reported

2024-05-22 15:03

Platform

win7-20240220-en

Max time kernel

150s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe"

Signatures

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe

"C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe"

Network

N/A

Files

\Users\Admin\AppData\Local\Temp\nsi1788.tmp\System.dll

MD5 e23600029d1b09bdb1d422fb4e46f5a6
SHA1 5d64a2f6a257a98a689a3db9a087a0fd5f180096
SHA256 7342b73593b3aa1b15e3731bfb1afd1961802a5c66343bac9a2c737ee94f4e38
SHA512 c971f513142633ce0e6ec6a04c754a286da8016563dab368c3fac83aef81fa3e9df1003c4b63d00a46351a9d18eaa7ae7645caef172e5e1d6e29123ab864e7ac

C:\Users\Admin\Tubaistens.ini

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

memory/1780-26216-0x0000000013D40000-0x0000000016D75000-memory.dmp

memory/1780-26217-0x0000000013D40000-0x0000000016D75000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-22 15:01

Reported

2024-05-22 15:03

Platform

win10v2004-20240426-en

Max time kernel

149s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe"

Signatures

Guloader,Cloudeye

downloader guloader

NirSoft MailPassView

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

NirSoft WebBrowserPassView

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

Nirsoft

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

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe N/A

Suspicious use of NtCreateThreadExHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 772 wrote to memory of 5104 N/A C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe
PID 772 wrote to memory of 5104 N/A C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe
PID 772 wrote to memory of 5104 N/A C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe
PID 772 wrote to memory of 5104 N/A C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe
PID 772 wrote to memory of 5104 N/A C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe
PID 5104 wrote to memory of 4800 N/A C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe
PID 5104 wrote to memory of 4800 N/A C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe
PID 5104 wrote to memory of 4800 N/A C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe
PID 5104 wrote to memory of 2032 N/A C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe
PID 5104 wrote to memory of 2032 N/A C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe
PID 5104 wrote to memory of 2032 N/A C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe
PID 5104 wrote to memory of 804 N/A C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe
PID 5104 wrote to memory of 804 N/A C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe
PID 5104 wrote to memory of 804 N/A C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe

"C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe"

C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe

"C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe"

C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe

C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe /stext "C:\Users\Admin\AppData\Local\Temp\efiidgsid"

C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe

C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe /stext "C:\Users\Admin\AppData\Local\Temp\oinsezdkqmeph"

C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe

C:\Users\Admin\AppData\Local\Temp\Signatureformrequest#54526.com.exe /stext "C:\Users\Admin\AppData\Local\Temp\rcslerneeuwuseri"

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 25.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
NL 23.62.61.129:443 www.bing.com tcp
US 8.8.8.8:53 129.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
TH 38.15.131.137:80 38.15.131.137 tcp
US 8.8.8.8:53 137.131.15.38.in-addr.arpa udp
TH 38.15.131.137:24554 tcp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
TH 38.15.131.137:24554 tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp
US 8.8.8.8:53 50.33.237.178.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nsp3887.tmp\System.dll

MD5 e23600029d1b09bdb1d422fb4e46f5a6
SHA1 5d64a2f6a257a98a689a3db9a087a0fd5f180096
SHA256 7342b73593b3aa1b15e3731bfb1afd1961802a5c66343bac9a2c737ee94f4e38
SHA512 c971f513142633ce0e6ec6a04c754a286da8016563dab368c3fac83aef81fa3e9df1003c4b63d00a46351a9d18eaa7ae7645caef172e5e1d6e29123ab864e7ac

C:\Users\Admin\Tubaistens.ini

MD5 1ed15cc277af7562eb72f4e48be3fe10
SHA1 57c78bd7ec913f83e871c110be655ad827832669
SHA256 f2a5a5e3109ab9577eb752819265b7f3552765356922bdd17f44a4781a104a1f
SHA512 39ca25427cc43851029ada4d1986e5d0de4670436e9f311ca145cea67c47461b2ed35137ae188a1af9d5d70a26c91f721d2f33daac8654c46f48777780f33b97

memory/772-26214-0x0000000014C20000-0x0000000017C55000-memory.dmp

memory/772-26215-0x0000000077381000-0x00000000774A1000-memory.dmp

memory/772-26216-0x00000000741E5000-0x00000000741E6000-memory.dmp

memory/5104-26217-0x00000000017A0000-0x00000000047D5000-memory.dmp

memory/772-26218-0x0000000014C20000-0x0000000017C55000-memory.dmp

memory/5104-26219-0x0000000000540000-0x0000000001794000-memory.dmp

memory/5104-26220-0x00000000017A0000-0x00000000047D5000-memory.dmp

memory/772-26221-0x0000000014C20000-0x0000000017C55000-memory.dmp

memory/2032-26224-0x0000000000400000-0x0000000000462000-memory.dmp

memory/4800-26225-0x0000000000400000-0x0000000000478000-memory.dmp

memory/804-26235-0x0000000000400000-0x0000000000424000-memory.dmp

memory/804-26238-0x0000000000400000-0x0000000000424000-memory.dmp

memory/804-26241-0x0000000000400000-0x0000000000424000-memory.dmp

memory/804-26237-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2032-26236-0x0000000000400000-0x0000000000462000-memory.dmp

memory/804-26231-0x0000000000400000-0x0000000000424000-memory.dmp

memory/4800-26230-0x0000000000400000-0x0000000000478000-memory.dmp

memory/4800-26228-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2032-26227-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2032-26226-0x0000000000400000-0x0000000000462000-memory.dmp

memory/4800-26223-0x0000000000400000-0x0000000000478000-memory.dmp

memory/4800-26244-0x0000000000400000-0x0000000000478000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\efiidgsid

MD5 788d7419b32411807cc6753cbbccecbe
SHA1 761b99a1e5bc168f525181d78cff3f6ed82daa14
SHA256 76150e857b36f1f070422d2ad4df17f87454466348e4bfc158b028977378140b
SHA512 3003f104b0b07870015ff4e9e0d254c2e537d4c68ef664a772d7018827b0ccbeb5481a2ce587b88e6ab1d71d6ce523a620c11c00c676857d5fd5ab949fa617b4

memory/5104-26247-0x0000000035530000-0x0000000035549000-memory.dmp

memory/5104-26251-0x0000000035530000-0x0000000035549000-memory.dmp

memory/5104-26250-0x0000000035530000-0x0000000035549000-memory.dmp

memory/5104-26253-0x00000000017A0000-0x00000000047D5000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-05-22 15:01

Reported

2024-05-22 15:03

Platform

win7-20240215-en

Max time kernel

121s

Max time network

123s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

Signatures

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2936 -s 220

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-05-22 15:01

Reported

2024-05-22 15:03

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

152s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4644 wrote to memory of 4076 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4644 wrote to memory of 4076 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4644 wrote to memory of 4076 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4076 -ip 4076

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 612

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 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 138.136.73.23.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 193.98.74.40.in-addr.arpa udp

Files

N/A