xworm | 01d2705a45a1217a55c4dfd27c91d8ffe69b74088e450ac20a162fc61169fd7a

General

Target

Crypter Jynx.exe
Size

1.5MB
MD5

d370fed0475e39de8843e54c3dfbd9d4
SHA1

294f2be4a06061b11ed53946e23ae70d305eb77a
SHA256

01d2705a45a1217a55c4dfd27c91d8ffe69b74088e450ac20a162fc61169fd7a
SHA512

d8041e531975a0ec554446a4a918e49d9d5e502d71ae5208012f9c5b26ae2c3fb749f49a9389580d5bf549e276a3f319229cbe1bc6a8c251e73fc52387a953a2
SSDEEP

24576:favnKiLNkwxE2olHKy4vUHuwN+4xeGPF17oiUFUKE+1YpW2J6BZDMdogJ6FS8:faiIXRiHj4cHi4h3U+KBWW28DMOo

Score

10^/10

xworm discovery execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

jynx.uncofig.com:1111

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x0008000000012117-5.dat	family_xworm
behavioral1/memory/2532-12-0x0000000000300000-0x000000000031A000-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
3032	powershell.exe
1924	powershell.exe
1720	powershell.exe
2608	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	helper.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	helper.exe

Executes dropped EXE 2 IoCs

pid	Process
2532	helper.exe
2088	Phantom.exe

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.exe"	helper.exe

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

Web Service

T1102

flow	ioc
5	raw.githubusercontent.com
6	raw.githubusercontent.com

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
7	ip-api.com

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 1 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	Phantom.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2532	helper.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2608	powershell.exe
3032	powershell.exe
1924	powershell.exe
1720	powershell.exe
2532	helper.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2532	helper.exe
Token: SeDebugPrivilege	2088	Phantom.exe
Token: SeDebugPrivilege	2608	powershell.exe
Token: SeDebugPrivilege	3032	powershell.exe
Token: SeDebugPrivilege	1924	powershell.exe
Token: SeDebugPrivilege	1720	powershell.exe
Token: SeDebugPrivilege	2532	helper.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2532	helper.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 3012 wrote to memory of 2532	3012	Crypter Jynx.exe	30
PID 3012 wrote to memory of 2532	3012	Crypter Jynx.exe	30
PID 3012 wrote to memory of 2532	3012	Crypter Jynx.exe	30
PID 3012 wrote to memory of 2088	3012	Crypter Jynx.exe	31
PID 3012 wrote to memory of 2088	3012	Crypter Jynx.exe	31
PID 3012 wrote to memory of 2088	3012	Crypter Jynx.exe	31
PID 3012 wrote to memory of 2088	3012	Crypter Jynx.exe	31
PID 2532 wrote to memory of 2608	2532	helper.exe	34
PID 2532 wrote to memory of 2608	2532	helper.exe	34
PID 2532 wrote to memory of 2608	2532	helper.exe	34
PID 2532 wrote to memory of 3032	2532	helper.exe	36
PID 2532 wrote to memory of 3032	2532	helper.exe	36
PID 2532 wrote to memory of 3032	2532	helper.exe	36
PID 2532 wrote to memory of 1924	2532	helper.exe	38
PID 2532 wrote to memory of 1924	2532	helper.exe	38
PID 2532 wrote to memory of 1924	2532	helper.exe	38
PID 2532 wrote to memory of 1720	2532	helper.exe	40
PID 2532 wrote to memory of 1720	2532	helper.exe	40
PID 2532 wrote to memory of 1720	2532	helper.exe	40

C:\Users\Admin\AppData\Local\Temp\Crypter Jynx.exe
"C:\Users\Admin\AppData\Local\Temp\Crypter Jynx.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3012
- C:\Users\Admin\AppData\Roaming\helper.exe
  "C:\Users\Admin\AppData\Roaming\helper.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2532
- - 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\helper.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2608
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'helper.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3032
- - 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.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1924
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1720
- C:\Users\Admin\AppData\Roaming\Phantom.exe
  "C:\Users\Admin\AppData\Roaming\Phantom.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2088

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

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

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
7KB

MD5
82d9233cf59ea9db4aac80dc3bbd0f3e

SHA1
4982f20ab4f3e77c513d28f75a5000df73979746

SHA256
6dab3a94be2e472ddf02ed29904bf1a0624aa80eb7baaec3fb79ae4f37a7e7f9

SHA512
adb1821aaec4197a9661b8485b8ad74f7e98b367c213a42c37bc85b9270e4cdebeba8182fdd0d3fc6cb829702cbd2e5fb58e70a676b37517a52cc954d11ff7aa

Download Submit
C:\Users\Admin\AppData\Roaming\Phantom.exe

Filesize
1.5MB

MD5
77447f97bedafe2dc903866ad18e25d6

SHA1
aef3c31376a39c2fff32a5c0ee7807257e9f6108

SHA256
2d32e99c12044e303025702f893ff65cf9a1a3cbc4991129f8188ee055d943f4

SHA512
8cd0760429bc259fe3ac7712af143e60e432e27be958f9ff0a1d73ad1d8298dd45137ba06bdda506f3fba930dff905a2c7b814045a25ca081cf930f565976475

Download Submit
C:\Users\Admin\AppData\Roaming\helper.exe

Filesize
81KB

MD5
bac22f7b34e1324af3401020d4831867

SHA1
6240c0d1ab52a65738a958ca3c5e360f7f0a2b6f

SHA256
9541d84a204d6271f0ba7bdfa7513d7f555e7f73fbf0142acdb347b61a9f821d

SHA512
2f8d100c90b8a816504f64b594f1a6f7e300bd4f080d4926581f279dca594b7c8342ec941f175782b599cfdb823b60582097d045ba8b57a1826521dd1d283ab5

Download Submit
memory/2088-14-0x0000000000DB0000-0x0000000000F2A000-memory.dmp

Filesize
1.5MB

Download
memory/2088-16-0x0000000005100000-0x00000000051B0000-memory.dmp

Filesize
704KB

Download
memory/2532-47-0x000000001AAB0000-0x000000001AABC000-memory.dmp

Filesize
48KB

Download
memory/2532-12-0x0000000000300000-0x000000000031A000-memory.dmp

Filesize
104KB

Download
memory/2532-15-0x000007FEF5B80000-0x000007FEF656C000-memory.dmp

Filesize
9.9MB

Download
memory/2532-45-0x000007FEF5B80000-0x000007FEF656C000-memory.dmp

Filesize
9.9MB

Download
memory/2608-21-0x000000001B4F0000-0x000000001B7D2000-memory.dmp

Filesize
2.9MB

Download
memory/2608-22-0x0000000001FF0000-0x0000000001FF8000-memory.dmp

Filesize
32KB

Download
memory/3012-0-0x000007FEF5B83000-0x000007FEF5B84000-memory.dmp

Filesize
4KB

Download
memory/3012-1-0x0000000000E60000-0x0000000000FF2000-memory.dmp

Filesize
1.6MB

Download
memory/3032-28-0x000000001B4E0000-0x000000001B7C2000-memory.dmp

Filesize
2.9MB

Download
memory/3032-29-0x0000000002890000-0x0000000002898000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads