xworm | 04ebe4c2a2397fd72ba719c24aae0a682f430dfcfd1487ef41d9a26d129323fd

General

Target

payment.exe
Size

478KB
MD5

1db8a24af26be22dfbdfa94f2557044b
SHA1

7f6f8a15fe47b5ba205e5f09c82c80296ac57e4e
SHA256

9ca715647dc7025d4ea21adc4a9eda922d8d8d17397d4751026397b4e44ec5b4
SHA512

e0fa830452b183b252de64cbaa39abd65c7b8c24517694a618abbf0ea56bbed00bd417f84b2c29b350126a6e3c29582787c3eb7296816bb62554e8b83fbefc38
SSDEEP

12288:T2PJbEeX/Se2Zu/ZAeJBcRMibOOASlCDkR:T2Px//SlWBcOibOOf

Score

10^/10

xworm discovery execution rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

C2

45.149.241.217:7000

Mutex

ir8qgmTYaaTz9RIP

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral1/memory/1276-30-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/1276-29-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/1276-28-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/1276-25-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/1276-23-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2600	powershell.exe
2692	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1804 set thread context of 1276	1804	payment.exe	37

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	payment.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	payment.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2576	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1804	payment.exe
1804	payment.exe
1804	payment.exe
1804	payment.exe
1804	payment.exe
1804	payment.exe
1804	payment.exe
2692	powershell.exe
2600	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1804	payment.exe
Token: SeDebugPrivilege	2692	powershell.exe
Token: SeDebugPrivilege	2600	powershell.exe
Token: SeDebugPrivilege	1276	payment.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1804 wrote to memory of 2600	1804	payment.exe	31
PID 1804 wrote to memory of 2600	1804	payment.exe	31
PID 1804 wrote to memory of 2600	1804	payment.exe	31
PID 1804 wrote to memory of 2600	1804	payment.exe	31
PID 1804 wrote to memory of 2692	1804	payment.exe	33
PID 1804 wrote to memory of 2692	1804	payment.exe	33
PID 1804 wrote to memory of 2692	1804	payment.exe	33
PID 1804 wrote to memory of 2692	1804	payment.exe	33
PID 1804 wrote to memory of 2576	1804	payment.exe	34
PID 1804 wrote to memory of 2576	1804	payment.exe	34
PID 1804 wrote to memory of 2576	1804	payment.exe	34
PID 1804 wrote to memory of 2576	1804	payment.exe	34
PID 1804 wrote to memory of 1276	1804	payment.exe	37
PID 1804 wrote to memory of 1276	1804	payment.exe	37
PID 1804 wrote to memory of 1276	1804	payment.exe	37
PID 1804 wrote to memory of 1276	1804	payment.exe	37
PID 1804 wrote to memory of 1276	1804	payment.exe	37
PID 1804 wrote to memory of 1276	1804	payment.exe	37
PID 1804 wrote to memory of 1276	1804	payment.exe	37
PID 1804 wrote to memory of 1276	1804	payment.exe	37
PID 1804 wrote to memory of 1276	1804	payment.exe	37

C:\Users\Admin\AppData\Local\Temp\payment.exe
"C:\Users\Admin\AppData\Local\Temp\payment.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1804
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\payment.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2600
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\oSFbzqGxN.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2692
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\oSFbzqGxN" /XML "C:\Users\Admin\AppData\Local\Temp\tmp536D.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2576
- C:\Users\Admin\AppData\Local\Temp\payment.exe
  "C:\Users\Admin\AppData\Local\Temp\payment.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1276

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp536D.tmp

Filesize
1KB

MD5
c7b27f846fa9db2437c1819acb6cd63a

SHA1
23ffb39baf6e86f2a7b89dbef58a42d64a7ebeee

SHA256
a6e17da1f74719c6eebb7ab192419b70a226fe04e5efd307d4f290a62abc4e9c

SHA512
333ee29236d6fcce937dda80327fcde83988ab77f4974eb5cd3fd935ddfc38d54c4ec2740365b10e8454c801aa714c940b8a17a57e2c161bcccfa6beea5b2776

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
7cb89cbd40d91de8048560497098d4d3

SHA1
769b48ecaf97e4c5ace2a6417f67382f0ba1782c

SHA256
03912f51617810c6ddf2b3c4dfae8919d7a91a7b5eda42afa890616b89531b31

SHA512
5e5c38810c56d23a200ee4c870035d5e4e2e675532371fda91e87fa40e150d59b40f2fc919a31e4dccaa6414ecf8a13f44ff6e31de9ddb66e79ba1206e353b51

Download Submit
memory/1276-29-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1276-21-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1276-23-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1276-25-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1276-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1276-28-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1276-30-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1276-19-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1804-6-0x0000000000AD0000-0x0000000000B20000-memory.dmp

Filesize
320KB

Download
memory/1804-1-0x0000000000B80000-0x0000000000BFA000-memory.dmp

Filesize
488KB

Download
memory/1804-0-0x0000000074C2E000-0x0000000074C2F000-memory.dmp

Filesize
4KB

Download
memory/1804-2-0x0000000074C20000-0x000000007530E000-memory.dmp

Filesize
6.9MB

Download
memory/1804-3-0x00000000003A0000-0x00000000003BC000-memory.dmp

Filesize
112KB

Download
memory/1804-5-0x0000000074C20000-0x000000007530E000-memory.dmp

Filesize
6.9MB

Download
memory/1804-4-0x0000000074C2E000-0x0000000074C2F000-memory.dmp

Filesize
4KB

Download
memory/1804-31-0x0000000074C20000-0x000000007530E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads