Malware Analysis Report

2024-09-11 14:09

Sample ID 240614-rrvqzsyank
Target async.exe
SHA256 a8602f61da135d8dd308b6acb0338f9b9da4024f9ff302490800af85b242eeed
Tags
xworm rat trojan
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

a8602f61da135d8dd308b6acb0338f9b9da4024f9ff302490800af85b242eeed

Threat Level: Known bad

The file async.exe was found to be: Known bad.

Malicious Activity Summary

xworm rat trojan

Detect Xworm Payload

Xworm

Executes dropped EXE

Loads dropped DLL

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-14 14:26

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-14 14:26

Reported

2024-06-14 14:28

Platform

win7-20231129-en

Max time kernel

121s

Max time network

138s

Command Line

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

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

Executes dropped EXE

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

Loads dropped DLL

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2784 set thread context of 3000 N/A C:\Users\Admin\AppData\Local\Temp\async.exe C:\Users\Admin\AppData\Local\Temp\async.exe

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2784 wrote to memory of 3000 N/A C:\Users\Admin\AppData\Local\Temp\async.exe C:\Users\Admin\AppData\Local\Temp\async.exe
PID 2784 wrote to memory of 3000 N/A C:\Users\Admin\AppData\Local\Temp\async.exe C:\Users\Admin\AppData\Local\Temp\async.exe
PID 2784 wrote to memory of 3000 N/A C:\Users\Admin\AppData\Local\Temp\async.exe C:\Users\Admin\AppData\Local\Temp\async.exe
PID 2784 wrote to memory of 3000 N/A C:\Users\Admin\AppData\Local\Temp\async.exe C:\Users\Admin\AppData\Local\Temp\async.exe
PID 2784 wrote to memory of 3000 N/A C:\Users\Admin\AppData\Local\Temp\async.exe C:\Users\Admin\AppData\Local\Temp\async.exe
PID 2784 wrote to memory of 3000 N/A C:\Users\Admin\AppData\Local\Temp\async.exe C:\Users\Admin\AppData\Local\Temp\async.exe
PID 2784 wrote to memory of 3000 N/A C:\Users\Admin\AppData\Local\Temp\async.exe C:\Users\Admin\AppData\Local\Temp\async.exe
PID 2784 wrote to memory of 3000 N/A C:\Users\Admin\AppData\Local\Temp\async.exe C:\Users\Admin\AppData\Local\Temp\async.exe
PID 2784 wrote to memory of 3000 N/A C:\Users\Admin\AppData\Local\Temp\async.exe C:\Users\Admin\AppData\Local\Temp\async.exe

Processes

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

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

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

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

Network

Country Destination Domain Proto
DE 64.226.123.178:6098 tcp

Files

memory/2784-0-0x0000000074DCE000-0x0000000074DCF000-memory.dmp

memory/2784-1-0x0000000000C50000-0x0000000000CFC000-memory.dmp

memory/2784-2-0x0000000000270000-0x00000000002D6000-memory.dmp

memory/2784-3-0x0000000074DC0000-0x00000000754AE000-memory.dmp

memory/2784-4-0x0000000000310000-0x0000000000318000-memory.dmp

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

MD5 14ab397c433b92d64015617db5065e44
SHA1 8bf6233d6689ef9bce781b7999e482906a288143
SHA256 a8602f61da135d8dd308b6acb0338f9b9da4024f9ff302490800af85b242eeed
SHA512 d9f36d85907e77316298a0b5db54c09285fba4de780b130c1a7a9d36f309c428a99ec294e6df2a71402ba2e1dc4b424c1810d1f403a45b8bd2b8799aa9cd121c

memory/3000-6-0x0000000000400000-0x0000000000436000-memory.dmp

memory/3000-7-0x0000000000400000-0x0000000000436000-memory.dmp

memory/3000-17-0x0000000000400000-0x0000000000436000-memory.dmp

memory/3000-15-0x0000000000400000-0x0000000000436000-memory.dmp

memory/3000-12-0x0000000000400000-0x0000000000436000-memory.dmp

memory/3000-10-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

memory/3000-9-0x0000000000400000-0x0000000000436000-memory.dmp

memory/3000-8-0x0000000000400000-0x0000000000436000-memory.dmp

memory/3000-18-0x0000000074DC0000-0x00000000754AE000-memory.dmp

memory/2784-19-0x0000000074DC0000-0x00000000754AE000-memory.dmp

memory/3000-20-0x0000000074DC0000-0x00000000754AE000-memory.dmp

memory/3000-21-0x0000000074DC0000-0x00000000754AE000-memory.dmp

memory/3000-22-0x0000000074DC0000-0x00000000754AE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-14 14:26

Reported

2024-06-14 14:28

Platform

win10v2004-20240508-en

Max time kernel

147s

Max time network

150s

Command Line

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

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

Executes dropped EXE

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4828 set thread context of 3220 N/A C:\Users\Admin\AppData\Local\Temp\async.exe C:\Users\Admin\AppData\Local\Temp\async.exe

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4828 wrote to memory of 3220 N/A C:\Users\Admin\AppData\Local\Temp\async.exe C:\Users\Admin\AppData\Local\Temp\async.exe
PID 4828 wrote to memory of 3220 N/A C:\Users\Admin\AppData\Local\Temp\async.exe C:\Users\Admin\AppData\Local\Temp\async.exe
PID 4828 wrote to memory of 3220 N/A C:\Users\Admin\AppData\Local\Temp\async.exe C:\Users\Admin\AppData\Local\Temp\async.exe
PID 4828 wrote to memory of 3220 N/A C:\Users\Admin\AppData\Local\Temp\async.exe C:\Users\Admin\AppData\Local\Temp\async.exe
PID 4828 wrote to memory of 3220 N/A C:\Users\Admin\AppData\Local\Temp\async.exe C:\Users\Admin\AppData\Local\Temp\async.exe
PID 4828 wrote to memory of 3220 N/A C:\Users\Admin\AppData\Local\Temp\async.exe C:\Users\Admin\AppData\Local\Temp\async.exe
PID 4828 wrote to memory of 3220 N/A C:\Users\Admin\AppData\Local\Temp\async.exe C:\Users\Admin\AppData\Local\Temp\async.exe
PID 4828 wrote to memory of 3220 N/A C:\Users\Admin\AppData\Local\Temp\async.exe C:\Users\Admin\AppData\Local\Temp\async.exe

Processes

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

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

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

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

Network

Country Destination Domain Proto
DE 64.226.123.178:6098 tcp
DE 64.226.123.178:6098 tcp
DE 64.226.123.178:6098 tcp
DE 64.226.123.178:6098 tcp
DE 64.226.123.178:6098 tcp
DE 64.226.123.178:6098 tcp

Files

memory/4828-0-0x000000007512E000-0x000000007512F000-memory.dmp

memory/4828-1-0x00000000006D0000-0x000000000077C000-memory.dmp

memory/4828-2-0x0000000005710000-0x0000000005CB4000-memory.dmp

memory/4828-3-0x0000000005200000-0x0000000005292000-memory.dmp

memory/4828-6-0x0000000075120000-0x00000000758D0000-memory.dmp

memory/4828-5-0x00000000052A0000-0x0000000005306000-memory.dmp

memory/4828-4-0x00000000051F0000-0x00000000051FA000-memory.dmp

memory/4828-7-0x0000000005540000-0x00000000055DC000-memory.dmp

memory/4828-8-0x0000000005330000-0x0000000005338000-memory.dmp

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

MD5 14ab397c433b92d64015617db5065e44
SHA1 8bf6233d6689ef9bce781b7999e482906a288143
SHA256 a8602f61da135d8dd308b6acb0338f9b9da4024f9ff302490800af85b242eeed
SHA512 d9f36d85907e77316298a0b5db54c09285fba4de780b130c1a7a9d36f309c428a99ec294e6df2a71402ba2e1dc4b424c1810d1f403a45b8bd2b8799aa9cd121c

memory/3220-10-0x0000000075120000-0x00000000758D0000-memory.dmp

memory/3220-11-0x0000000000800000-0x0000000000836000-memory.dmp

memory/4828-13-0x0000000075120000-0x00000000758D0000-memory.dmp

memory/3220-14-0x0000000075120000-0x00000000758D0000-memory.dmp

memory/3220-15-0x0000000075120000-0x00000000758D0000-memory.dmp