icexloader | 0911819d0e050ddc5884ea40b4b39a716a7ef8de0179d0dfded9f043546cede9

General

Target

Opus.exe
Size

348KB
MD5

96bdd68cfa84ba3d7390b4e172837370
SHA1

f3f5908c8138881e04db463a78172ca510073788
SHA256

0911819d0e050ddc5884ea40b4b39a716a7ef8de0179d0dfded9f043546cede9
SHA512

17775d7dbf6776620f59a0a2f4ea2753a4ddf39a9b05e7f2d28dae2e48a809c8aa30382d5fdddff70c76d948f6a1991a1585271e3b820576feb18825b178f4b0
SSDEEP

6144:cbslI7IBoZ1jMYORbxV9b+WvHfyVQhAyPl//2:cbvII1MtD+WffyVQhAyPl//2

Score

10^/10

icexloader loader persistence

Malware Config

Extracted

Family

icexloader

C2

http://stealthelite.one/magnumopus/Script.php

Signatures

Detects IceXLoader v3.0 4 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\Opus.exe	family_icexloader_v3
\Users\Admin\AppData\Roaming\Opus.exe	family_icexloader_v3
\Users\Admin\AppData\Roaming\Opus.exe	family_icexloader_v3
C:\Users\Admin\AppData\Roaming\Opus.exe	family_icexloader_v3

icexloader
IceXLoader is a downloader used to deliver other malware families.
loader icexloader
Executes dropped EXE 1 IoCs

Processes:

Opus.exe

pid process

1244 Opus.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1116 cmd.exe
Drops startup file 1 IoCs

Processes:

Opus.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Opus.exe Opus.exe
Loads dropped DLL 2 IoCs

Processes:

cmd.exe

pid process

816 cmd.exe
816 cmd.exe

pid	process
1244	Opus.exe

pid	process
1116	cmd.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Opus.exe	Opus.exe

pid	process
816	cmd.exe
816	cmd.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Opus.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	Opus.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Opus = "\"C:\\Users\\Admin\\AppData\\Roaming\\Opus.exe\""	Opus.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run	Opus.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\Opus = "\"C:\\Users\\Admin\\AppData\\Roaming\\Opus.exe\""	Opus.exe

Delays execution with timeout.exe 2 IoCs
evasion

Processes:

timeout.exetimeout.exe

pid process

532 timeout.exe
1532 timeout.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

powershell.exe

pid process

584 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 584 powershell.exe

pid	process
532	timeout.exe
1532	timeout.exe

pid	process
584	powershell.exe

description	pid	process
Token: SeDebugPrivilege	584	powershell.exe

Suspicious use of WriteProcessMemory 28 IoCs

Processes:

Opus.execmd.execmd.exeOpus.execmd.exe

description	pid	process	target process
PID 1448 wrote to memory of 816	1448	Opus.exe	cmd.exe
PID 1448 wrote to memory of 816	1448	Opus.exe	cmd.exe
PID 1448 wrote to memory of 816	1448	Opus.exe	cmd.exe
PID 1448 wrote to memory of 816	1448	Opus.exe	cmd.exe
PID 1448 wrote to memory of 1116	1448	Opus.exe	cmd.exe
PID 1448 wrote to memory of 1116	1448	Opus.exe	cmd.exe
PID 1448 wrote to memory of 1116	1448	Opus.exe	cmd.exe
PID 1448 wrote to memory of 1116	1448	Opus.exe	cmd.exe
PID 816 wrote to memory of 532	816	cmd.exe	timeout.exe
PID 816 wrote to memory of 532	816	cmd.exe	timeout.exe
PID 816 wrote to memory of 532	816	cmd.exe	timeout.exe
PID 816 wrote to memory of 532	816	cmd.exe	timeout.exe
PID 1116 wrote to memory of 1532	1116	cmd.exe	timeout.exe
PID 1116 wrote to memory of 1532	1116	cmd.exe	timeout.exe
PID 1116 wrote to memory of 1532	1116	cmd.exe	timeout.exe
PID 1116 wrote to memory of 1532	1116	cmd.exe	timeout.exe
PID 816 wrote to memory of 1244	816	cmd.exe	Opus.exe
PID 816 wrote to memory of 1244	816	cmd.exe	Opus.exe
PID 816 wrote to memory of 1244	816	cmd.exe	Opus.exe
PID 816 wrote to memory of 1244	816	cmd.exe	Opus.exe
PID 1244 wrote to memory of 1420	1244	Opus.exe	cmd.exe
PID 1244 wrote to memory of 1420	1244	Opus.exe	cmd.exe
PID 1244 wrote to memory of 1420	1244	Opus.exe	cmd.exe
PID 1244 wrote to memory of 1420	1244	Opus.exe	cmd.exe
PID 1420 wrote to memory of 584	1420	cmd.exe	powershell.exe
PID 1420 wrote to memory of 584	1420	cmd.exe	powershell.exe
PID 1420 wrote to memory of 584	1420	cmd.exe	powershell.exe
PID 1420 wrote to memory of 584	1420	cmd.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\Opus.exe
"C:\Users\Admin\AppData\Local\Temp\Opus.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1448

C:\Windows\SysWOW64\cmd.exe
cmd /c timeout 2 & "C:\Users\Admin\AppData\Roaming\Opus.exe"
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:816

C:\Windows\SysWOW64\timeout.exe
timeout 2
3⤵
- Delays execution with timeout.exe
PID:532

C:\Users\Admin\AppData\Roaming\Opus.exe
"C:\Users\Admin\AppData\Roaming\Opus.exe"
3⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1244

C:\Windows\SysWOW64\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\file.bat"
4⤵
- Suspicious use of WriteProcessMemory
PID:1420

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell -Command Set-MpPreference -DisableRealtimeMonitoring $true
5⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:584

C:\Windows\SysWOW64\cmd.exe
cmd /c timeout 1 & del /F "C:\Users\Admin\AppData\Local\Temp\Opus.exe"
2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1116

C:\Windows\SysWOW64\timeout.exe
timeout 1
3⤵
- Delays execution with timeout.exe
PID:1532

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\file.bat
Filesize
238B

MD5
fdb5554346e7388c6bc358c16c448995

SHA1
17957bbe381d434574e1fc15ed5c74084fda26fe

SHA256
898bc3e85e09e353a36612b5911aa2636c06a94443dbec4e62c6b8cf2412640c

SHA512
3eec1e0dab21861bcb73cbfe3ea7234768443dd02c62a55919ad7e693501ff886946d74a8f75b7f580fa5251472a13ff55d187396c8d65fe9c2220f2f6da0674

Download Submit
C:\Users\Admin\AppData\Roaming\Opus.exe
Filesize
348KB

MD5
96bdd68cfa84ba3d7390b4e172837370

SHA1
f3f5908c8138881e04db463a78172ca510073788

SHA256
0911819d0e050ddc5884ea40b4b39a716a7ef8de0179d0dfded9f043546cede9

SHA512
17775d7dbf6776620f59a0a2f4ea2753a4ddf39a9b05e7f2d28dae2e48a809c8aa30382d5fdddff70c76d948f6a1991a1585271e3b820576feb18825b178f4b0

Download Submit
C:\Users\Admin\AppData\Roaming\Opus.exe
Filesize
348KB

MD5
96bdd68cfa84ba3d7390b4e172837370

SHA1
f3f5908c8138881e04db463a78172ca510073788

SHA256
0911819d0e050ddc5884ea40b4b39a716a7ef8de0179d0dfded9f043546cede9

SHA512
17775d7dbf6776620f59a0a2f4ea2753a4ddf39a9b05e7f2d28dae2e48a809c8aa30382d5fdddff70c76d948f6a1991a1585271e3b820576feb18825b178f4b0

Download Submit
\Users\Admin\AppData\Roaming\Opus.exe
Filesize
348KB

MD5
96bdd68cfa84ba3d7390b4e172837370

SHA1
f3f5908c8138881e04db463a78172ca510073788

SHA256
0911819d0e050ddc5884ea40b4b39a716a7ef8de0179d0dfded9f043546cede9

SHA512
17775d7dbf6776620f59a0a2f4ea2753a4ddf39a9b05e7f2d28dae2e48a809c8aa30382d5fdddff70c76d948f6a1991a1585271e3b820576feb18825b178f4b0

Download Submit
\Users\Admin\AppData\Roaming\Opus.exe
Filesize
348KB

MD5
96bdd68cfa84ba3d7390b4e172837370

SHA1
f3f5908c8138881e04db463a78172ca510073788

SHA256
0911819d0e050ddc5884ea40b4b39a716a7ef8de0179d0dfded9f043546cede9

SHA512
17775d7dbf6776620f59a0a2f4ea2753a4ddf39a9b05e7f2d28dae2e48a809c8aa30382d5fdddff70c76d948f6a1991a1585271e3b820576feb18825b178f4b0

Download Submit
memory/532-57-0x0000000000000000-mapping.dmp

Download
memory/584-67-0x0000000000000000-mapping.dmp

Download
memory/584-69-0x0000000073B40000-0x00000000740EB000-memory.dmp

Filesize
5.7MB

Download
memory/584-70-0x0000000073B40000-0x00000000740EB000-memory.dmp

Filesize
5.7MB

Download
memory/816-55-0x0000000000000000-mapping.dmp

Download
memory/1116-56-0x0000000000000000-mapping.dmp

Download
memory/1244-62-0x0000000000000000-mapping.dmp

Download
memory/1420-65-0x0000000000000000-mapping.dmp

Download
memory/1448-54-0x00000000758B1000-0x00000000758B3000-memory.dmp

Filesize
8KB

Download
memory/1532-58-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads