Malware Analysis Report

2024-12-06 03:04

Sample ID 241119-2fzkxayqaq
Target 376ba06feee16467464fb8a765830c17b65e49f38d07369db1a0eb586fa6ae20.zip
SHA256 ceb4c98e16542d62830e3cfc3267522c208bd92c9a0ee0c8b715ecf1f63c2a26
Tags
guloader discovery downloader execution
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

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: behavioral5

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

ceb4c98e16542d62830e3cfc3267522c208bd92c9a0ee0c8b715ecf1f63c2a26

Threat Level: Known bad

The file 376ba06feee16467464fb8a765830c17b65e49f38d07369db1a0eb586fa6ae20.zip was found to be: Known bad.

Malicious Activity Summary

guloader discovery downloader execution

Guloader family

Guloader,Cloudeye

Loads dropped DLL

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

Drops file in Program Files directory

Command and Scripting Interpreter: PowerShell

System Location Discovery: System Language Discovery

Program crash

Unsigned PE

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-19 22:32

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-19 22:32

Reported

2024-11-19 22:35

Platform

win10v2004-20241007-en

Max time kernel

147s

Max time network

157s

Command Line

"C:\Users\Admin\AppData\Local\Temp\PO 00009876660887666000.exe"

Signatures

Guloader family

guloader

Guloader,Cloudeye

downloader guloader

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\PO 00009876660887666000.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Program Files (x86)\windows mail\wabmig.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2508 set thread context of 428 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Program Files (x86)\windows mail\wabmig.exe

Drops file in Program Files directory

Description Indicator Process Target
File opened for modification C:\Program Files (x86)\Triolein\uropfrelsen.tir C:\Users\Admin\AppData\Local\Temp\PO 00009876660887666000.exe N/A

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

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:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\windows mail\wabmig.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\PO 00009876660887666000.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\PO 00009876660887666000.exe

"C:\Users\Admin\AppData\Local\Temp\PO 00009876660887666000.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" -windowstyle minimized "$Oem=Get-Content 'C:\Users\Admin\AppData\Roaming\djellabaer\Champagnizing183.Ret86';$Skydeklar93=$Oem.SubString(53372,3);.$Skydeklar93($Oem)"

C:\Program Files (x86)\windows mail\wabmig.exe

"C:\Program Files (x86)\windows mail\wabmig.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
NL 84.38.133.121:80 tcp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
NL 84.38.133.121:80 tcp
NL 84.38.133.121:80 tcp
NL 84.38.133.121:80 tcp
NL 84.38.133.121:80 tcp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
NL 84.38.133.121:80 tcp
NL 84.38.133.121:80 tcp
NL 84.38.133.121:80 tcp
NL 84.38.133.121:80 tcp

Files

C:\Users\Admin\AppData\Local\Temp\nss72EF.tmp\nsExec.dll

MD5 3d366250fcf8b755fce575c75f8c79e4
SHA1 2ebac7df78154738d41aac8e27d7a0e482845c57
SHA256 8bdd996ae4778c6f829e2bcb651c55efc9ec37eeea17d259e013b39528dddbb6
SHA512 67d2d88de625227ccd2cb406b4ac3a215d1770d385c985a44e2285490f49b45f23ce64745b24444e2a0f581335fda02e913b92781043e8dfd287844435ba9094

memory/2508-13-0x0000000072F7E000-0x0000000072F7F000-memory.dmp

memory/2508-14-0x0000000004960000-0x0000000004996000-memory.dmp

memory/2508-16-0x0000000004FD0000-0x00000000055F8000-memory.dmp

memory/2508-15-0x0000000072F70000-0x0000000073720000-memory.dmp

memory/2508-17-0x0000000072F70000-0x0000000073720000-memory.dmp

memory/2508-18-0x0000000004F30000-0x0000000004F52000-memory.dmp

memory/2508-19-0x0000000005830000-0x0000000005896000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zhy0yc1k.pcu.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2508-20-0x00000000058A0000-0x0000000005906000-memory.dmp

memory/2508-30-0x0000000005A10000-0x0000000005D64000-memory.dmp

memory/2508-31-0x0000000005F00000-0x0000000005F1E000-memory.dmp

memory/2508-32-0x0000000005F50000-0x0000000005F9C000-memory.dmp

memory/2508-33-0x00000000070E0000-0x0000000007176000-memory.dmp

memory/2508-34-0x0000000006410000-0x000000000642A000-memory.dmp

memory/2508-35-0x0000000006470000-0x0000000006492000-memory.dmp

memory/2508-36-0x0000000007760000-0x0000000007D04000-memory.dmp

C:\Users\Admin\AppData\Roaming\djellabaer\Champagnizing183.Ret86

MD5 e7c25fcd57bcd42038143a6928274367
SHA1 ccfab30faef7de037ae6bcfdd144a2e6b10b1455
SHA256 187adbae17615b37ae386ebadb4347a41f2a3e994939e832e96f342d91f9d916
SHA512 1ead97118d2c03e5ddf13412dfa2477c3f11ecbda54ba7439d24206c0f5cffb80581b47ef0ab32cf8b35e8a089f78fb84792b8e154b1e10a3a7e29f914c77969

memory/2508-38-0x0000000008390000-0x0000000008A0A000-memory.dmp

memory/2508-40-0x0000000072F70000-0x0000000073720000-memory.dmp

memory/2508-41-0x0000000072F70000-0x0000000073720000-memory.dmp

memory/2508-42-0x0000000072F7E000-0x0000000072F7F000-memory.dmp

memory/2508-43-0x0000000072F70000-0x0000000073720000-memory.dmp

memory/2508-44-0x0000000072F70000-0x0000000073720000-memory.dmp

memory/2508-45-0x0000000072F70000-0x0000000073720000-memory.dmp

memory/2508-46-0x0000000072F70000-0x0000000073720000-memory.dmp

C:\Users\Admin\AppData\Roaming\djellabaer\Uruguayererne.Dec

MD5 c63b35457e3f441b055e33bf5fefe527
SHA1 a667f3c9aab680e32649c448a82acfc6248547ee
SHA256 5fb4c0b14e27e026650eac4da2101b83d70c3a39f8cc008ab5e5c4fcd7837b00
SHA512 3532bbc907ca4a2633550d9eff54325108d8592413138b3397014ae50e13c03cf7f96595dfa42350ee966c1b1e329c7a4e810a019d77c08a7045c4f28d70ba34

memory/2508-48-0x0000000072F70000-0x0000000073720000-memory.dmp

memory/2508-50-0x0000000072F70000-0x0000000073720000-memory.dmp

memory/2508-49-0x0000000008A10000-0x000000000B13D000-memory.dmp

memory/2508-51-0x0000000072F70000-0x0000000073720000-memory.dmp

memory/2508-52-0x0000000072F70000-0x0000000073720000-memory.dmp

memory/2508-53-0x0000000072F70000-0x0000000073720000-memory.dmp

memory/2508-55-0x0000000072F70000-0x0000000073720000-memory.dmp

memory/2508-56-0x0000000072F70000-0x0000000073720000-memory.dmp

memory/428-57-0x0000000002230000-0x000000000495D000-memory.dmp

memory/428-58-0x0000000000FD0000-0x0000000002224000-memory.dmp

memory/2508-64-0x0000000072F70000-0x0000000073720000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-11-19 22:32

Reported

2024-11-19 22:34

Platform

win7-20240903-en

Max time kernel

120s

Max time network

125s

Command Line

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

Signatures

Program crash

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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Processes

C:\Windows\system32\rundll32.exe

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

C:\Windows\SysWOW64\rundll32.exe

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2172 -s 220

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-11-19 22:32

Reported

2024-11-19 22:34

Platform

win10v2004-20241007-en

Max time kernel

135s

Max time network

139s

Command Line

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

Signatures

Program crash

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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 904 wrote to memory of 1060 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 904 wrote to memory of 1060 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 904 wrote to memory of 1060 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\nsExec.dll,#1

C:\Windows\SysWOW64\rundll32.exe

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1060 -ip 1060

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1060 -s 612

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 89.65.42.20.in-addr.arpa udp

Files

N/A

Analysis: behavioral5

Detonation Overview

Submitted

2024-11-19 22:32

Reported

2024-11-19 22:34

Platform

macos-20241106-en

Max time kernel

67s

Max time network

102s

Command Line

[sh -c sudo /bin/zsh -c "open /Users/run/Ergmeter/Lakkendes.app"]

Signatures

N/A

Processes

/bin/sh

[sh -c sudo /bin/zsh -c "open /Users/run/Ergmeter/Lakkendes.app"]

/bin/bash

[sh -c sudo /bin/zsh -c "open /Users/run/Ergmeter/Lakkendes.app"]

/usr/bin/sudo

[sudo /bin/zsh -c open /Users/run/Ergmeter/Lakkendes.app]

/bin/zsh

[/bin/zsh -c open /Users/run/Ergmeter/Lakkendes.app]

/usr/bin/open

[open /Users/run/Ergmeter/Lakkendes.app]

Network

Country Destination Domain Proto
US 8.8.8.8:53 lb._dns-sd._udp.0.0.127.10.in-addr.arpa udp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-19 22:32

Reported

2024-11-19 22:34

Platform

win7-20240729-en

Max time kernel

90s

Max time network

19s

Command Line

"C:\Users\Admin\AppData\Local\Temp\PO 00009876660887666000.exe"

Signatures

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\PO 00009876660887666000.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File opened for modification C:\Program Files (x86)\Triolein\uropfrelsen.tir C:\Users\Admin\AppData\Local\Temp\PO 00009876660887666000.exe N/A

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

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\PO 00009876660887666000.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\PO 00009876660887666000.exe

"C:\Users\Admin\AppData\Local\Temp\PO 00009876660887666000.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" -windowstyle minimized "$Oem=Get-Content 'C:\Users\Admin\AppData\Roaming\djellabaer\Champagnizing183.Ret86';$Skydeklar93=$Oem.SubString(53372,3);.$Skydeklar93($Oem)"

Network

N/A

Files

\Users\Admin\AppData\Local\Temp\nsz7D4C.tmp\nsExec.dll

MD5 3d366250fcf8b755fce575c75f8c79e4
SHA1 2ebac7df78154738d41aac8e27d7a0e482845c57
SHA256 8bdd996ae4778c6f829e2bcb651c55efc9ec37eeea17d259e013b39528dddbb6
SHA512 67d2d88de625227ccd2cb406b4ac3a215d1770d385c985a44e2285490f49b45f23ce64745b24444e2a0f581335fda02e913b92781043e8dfd287844435ba9094

memory/2820-16-0x0000000002AD0000-0x0000000002B10000-memory.dmp