xworm | 68a3a8d3147a285c2b76e64cbb0a3bb4803aa35a35ff9fb964512ba0cec68743

General

Target

6JATJ_Solara.exe
Size

44KB
MD5

122fbe0d84957e8e5fa9385c12da3d0f
SHA1

ff9729798bca408c4cdbf4f44a2a25b95a7fc163
SHA256

68a3a8d3147a285c2b76e64cbb0a3bb4803aa35a35ff9fb964512ba0cec68743
SHA512

9ef2f06d78d5722e61ef55ceea2e19c4b12b7c0c0e95097b90ff6d98e5d2208921742fb4c31af816d20366de087775d0eb67de7b9c532f29eff54e43690672a5
SSDEEP

768:GNTRmetisWt2tKdouL3ZE9R9yFRPG9Xb6OOChLsGO6Mi5:GNTketz8npE92Fw9Xb6OOCVVO9i5

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

Mutex

6vmX68wzVkGMx0vS

Attributes

Install_directory
%AppData%
install_file
USB.exe
pastebin_url
https://pastebin.com/raw/FgmKAhUD

aes.plain

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2380-1-0x00000000008C0000-0x00000000008D2000-memory.dmp	family_xworm
behavioral1/files/0x000c000000012280-34.dat	family_xworm
behavioral1/memory/1700-36-0x00000000011B0000-0x00000000011C2000-memory.dmp	family_xworm
behavioral1/memory/1984-39-0x00000000001A0000-0x00000000001B2000-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 4 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2752	powershell.exe
2672	powershell.exe
2556	powershell.exe
2196	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	6JATJ_Solara.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	6JATJ_Solara.exe

Executes dropped EXE 2 IoCs

pid	Process
1700	svchost
1984	svchost

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost"	6JATJ_Solara.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
4	pastebin.com
5	pastebin.com

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

System Information Discovery
T1082

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
2924	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2752	powershell.exe
2672	powershell.exe
2556	powershell.exe
2196	powershell.exe
2380	6JATJ_Solara.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2380	6JATJ_Solara.exe
Token: SeDebugPrivilege	2752	powershell.exe
Token: SeDebugPrivilege	2672	powershell.exe
Token: SeDebugPrivilege	2556	powershell.exe
Token: SeDebugPrivilege	2196	powershell.exe
Token: SeDebugPrivilege	2380	6JATJ_Solara.exe
Token: SeDebugPrivilege	1700	svchost
Token: SeDebugPrivilege	1984	svchost

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2380	6JATJ_Solara.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 2752	2380	6JATJ_Solara.exe	30
PID 2380 wrote to memory of 2752	2380	6JATJ_Solara.exe	30
PID 2380 wrote to memory of 2752	2380	6JATJ_Solara.exe	30
PID 2380 wrote to memory of 2672	2380	6JATJ_Solara.exe	32
PID 2380 wrote to memory of 2672	2380	6JATJ_Solara.exe	32
PID 2380 wrote to memory of 2672	2380	6JATJ_Solara.exe	32
PID 2380 wrote to memory of 2556	2380	6JATJ_Solara.exe	34
PID 2380 wrote to memory of 2556	2380	6JATJ_Solara.exe	34
PID 2380 wrote to memory of 2556	2380	6JATJ_Solara.exe	34
PID 2380 wrote to memory of 2196	2380	6JATJ_Solara.exe	36
PID 2380 wrote to memory of 2196	2380	6JATJ_Solara.exe	36
PID 2380 wrote to memory of 2196	2380	6JATJ_Solara.exe	36
PID 2380 wrote to memory of 2924	2380	6JATJ_Solara.exe	38
PID 2380 wrote to memory of 2924	2380	6JATJ_Solara.exe	38
PID 2380 wrote to memory of 2924	2380	6JATJ_Solara.exe	38
PID 1516 wrote to memory of 1700	1516	taskeng.exe	41
PID 1516 wrote to memory of 1700	1516	taskeng.exe	41
PID 1516 wrote to memory of 1700	1516	taskeng.exe	41
PID 1516 wrote to memory of 1984	1516	taskeng.exe	43
PID 1516 wrote to memory of 1984	1516	taskeng.exe	43
PID 1516 wrote to memory of 1984	1516	taskeng.exe	43

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\6JATJ_Solara.exe
"C:\Users\Admin\AppData\Local\Temp\6JATJ_Solara.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\6JATJ_Solara.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2752
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '6JATJ_Solara.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2672
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\svchost'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2556
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2196
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2924

C:\Windows\system32\taskeng.exe
taskeng.exe {D8DF3396-9954-4AA6-8BE2-6A30FE2E6009} S-1-5-21-3063565911-2056067323-3330884624-1000:KHBTHJFA\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1516
- C:\Users\Admin\AppData\Roaming\svchost
  C:\Users\Admin\AppData\Roaming\svchost
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1700
- C:\Users\Admin\AppData\Roaming\svchost
  C:\Users\Admin\AppData\Roaming\svchost
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1984

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

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
fa1cea12d1b35671f4aabb752052b5ec

SHA1
b85b005cc7ffed6a0967a6db6b76435a4c96de83

SHA256
a5d0c6aa1bdca030aa96b5b8226091a6c9b5f6bb5bbaa6f1eab700e56d53f5d8

SHA512
8cb618d7a7355ad6e33afe5490c28707802df5a2d1772a0948c1ba7d5931a2480acb53c73f77a6d2108bd8426caf95737387d938030d93a3018aac7db788782e

Download Submit
C:\Users\Admin\AppData\Roaming\svchost

Filesize
44KB

MD5
122fbe0d84957e8e5fa9385c12da3d0f

SHA1
ff9729798bca408c4cdbf4f44a2a25b95a7fc163

SHA256
68a3a8d3147a285c2b76e64cbb0a3bb4803aa35a35ff9fb964512ba0cec68743

SHA512
9ef2f06d78d5722e61ef55ceea2e19c4b12b7c0c0e95097b90ff6d98e5d2208921742fb4c31af816d20366de087775d0eb67de7b9c532f29eff54e43690672a5

Download Submit
memory/1700-36-0x00000000011B0000-0x00000000011C2000-memory.dmp

Filesize
72KB

Download
memory/1984-39-0x00000000001A0000-0x00000000001B2000-memory.dmp

Filesize
72KB

Download
memory/2380-31-0x000000001B280000-0x000000001B300000-memory.dmp

Filesize
512KB

Download
memory/2380-1-0x00000000008C0000-0x00000000008D2000-memory.dmp

Filesize
72KB

Download
memory/2380-0-0x000007FEF5173000-0x000007FEF5174000-memory.dmp

Filesize
4KB

Download
memory/2380-32-0x000000001B280000-0x000000001B300000-memory.dmp

Filesize
512KB

Download
memory/2672-14-0x000000001B6B0000-0x000000001B992000-memory.dmp

Filesize
2.9MB

Download
memory/2672-15-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download
memory/2752-8-0x0000000001E00000-0x0000000001E08000-memory.dmp

Filesize
32KB

Download
memory/2752-7-0x000000001B660000-0x000000001B942000-memory.dmp

Filesize
2.9MB

Download
memory/2752-6-0x0000000002A90000-0x0000000002B10000-memory.dmp

Filesize
512KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads