xworm | af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807

General

Target

af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe
Size

238KB
MD5

a3f033788623e354934c5bd0d2e532ab
SHA1

0356845c39af18ffbc03b1262278badcd8875437
SHA256

af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807
SHA512

bfb042dcdc18e9af463140f134de3e349561f8f70c31864686a759683838cef0011337394ee19d0f0cdfd62cacb40bbc165afc8232213f64a11f3b15cf17d4d5
SSDEEP

6144:VJW3bxeS3krUhcX7elbKTua9bfF/H9d9n:4eSUr3X3u+

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

45.141.27.242:7777

Attributes

Install_directory
%Temp%
install_file
conhost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1524-1-0x0000000000F00000-0x0000000000F40000-memory.dmp	family_xworm
behavioral2/files/0x000e000000023b87-58.dat	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
2444	powershell.exe
3336	powershell.exe
4792	powershell.exe
4440	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\conhost.lnk	af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\conhost.lnk	af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe

Executes dropped EXE 3 IoCs

pid	Process
928	conhost.exe
4940	conhost.exe
2288	conhost.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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\conhost = "C:\\Users\\Admin\\AppData\\Local\\Temp\\conhost.exe"	af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe

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
15	ip-api.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
4836	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2444	powershell.exe
2444	powershell.exe
3336	powershell.exe
3336	powershell.exe
4792	powershell.exe
4792	powershell.exe
4440	powershell.exe
4440	powershell.exe
1524	af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	1524	af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe
Token: SeDebugPrivilege	2444	powershell.exe
Token: SeDebugPrivilege	3336	powershell.exe
Token: SeDebugPrivilege	4792	powershell.exe
Token: SeDebugPrivilege	4440	powershell.exe
Token: SeDebugPrivilege	1524	af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe
Token: SeDebugPrivilege	928	conhost.exe
Token: SeDebugPrivilege	4940	conhost.exe
Token: SeDebugPrivilege	2288	conhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1524	af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1524 wrote to memory of 2444	1524	af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe	83
PID 1524 wrote to memory of 2444	1524	af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe	83
PID 1524 wrote to memory of 3336	1524	af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe	85
PID 1524 wrote to memory of 3336	1524	af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe	85
PID 1524 wrote to memory of 4792	1524	af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe	87
PID 1524 wrote to memory of 4792	1524	af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe	87
PID 1524 wrote to memory of 4440	1524	af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe	89
PID 1524 wrote to memory of 4440	1524	af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe	89
PID 1524 wrote to memory of 4836	1524	af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe	91
PID 1524 wrote to memory of 4836	1524	af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe	91

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\af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe
"C:\Users\Admin\AppData\Local\Temp\af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe"
1⤵
- Checks computer location settings
- 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:1524
- 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\af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2444
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3336
- 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\conhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4792
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'conhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4440
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "conhost" /tr "C:\Users\Admin\AppData\Local\Temp\conhost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4836

C:\Users\Admin\AppData\Local\Temp\conhost.exe
C:\Users\Admin\AppData\Local\Temp\conhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:928

C:\Users\Admin\AppData\Local\Temp\conhost.exe
C:\Users\Admin\AppData\Local\Temp\conhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4940

C:\Users\Admin\AppData\Local\Temp\conhost.exe
C:\Users\Admin\AppData\Local\Temp\conhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2288

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\conhost.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
6a5650126660a2760e93e48a63a9f626

SHA1
35710b657094c22ed66a37854173ce2090f02caa

SHA256
e981ba57e2617381d8d75f0c7ffb6e836afbeb475434a06b56b9a5a988761e92

SHA512
4e4cc9dc507cd95d5f9ddc181f68e97e5351aa7748c574717ac4cf0ff882f7fb1c6d6460b63560db382697c44118b8c2a288e2c94c9c8457b15ca6a9b1a66ba9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
10890cda4b6eab618e926c4118ab0647

SHA1
1e1d63b73a0e6c7575f458b3c7917a9ce5ba776d

SHA256
00f8a035324d39bd62e6dee5e1b480069015471c487ebee4479e6990ea9ddb14

SHA512
a2ee84006c24a36f25e0bca0772430d64e3791f233da916aecdeae6712763e77d55bbbd00dc8f6b2b3887f3c26ab3980b96c5f46cc823e81e28abbbc5fc78221

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_re2dgzf4.rcq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\conhost.exe

Filesize
238KB

MD5
a3f033788623e354934c5bd0d2e532ab

SHA1
0356845c39af18ffbc03b1262278badcd8875437

SHA256
af6abc818434e7e0fb9205d31918243b17d843c38e3148ec78172fb6a9d2d807

SHA512
bfb042dcdc18e9af463140f134de3e349561f8f70c31864686a759683838cef0011337394ee19d0f0cdfd62cacb40bbc165afc8232213f64a11f3b15cf17d4d5

Download Submit
memory/1524-1-0x0000000000F00000-0x0000000000F40000-memory.dmp

Filesize
256KB

Download
memory/1524-2-0x00007FF802EA0000-0x00007FF803961000-memory.dmp

Filesize
10.8MB

Download
memory/1524-65-0x00000000030B0000-0x00000000030BC000-memory.dmp

Filesize
48KB

Download
memory/1524-0-0x00007FF802EA3000-0x00007FF802EA5000-memory.dmp

Filesize
8KB

Download
memory/1524-57-0x00007FF802EA0000-0x00007FF803961000-memory.dmp

Filesize
10.8MB

Download
memory/2444-4-0x00007FF802EA0000-0x00007FF803961000-memory.dmp

Filesize
10.8MB

Download
memory/2444-18-0x00007FF802EA0000-0x00007FF803961000-memory.dmp

Filesize
10.8MB

Download
memory/2444-15-0x00007FF802EA0000-0x00007FF803961000-memory.dmp

Filesize
10.8MB

Download
memory/2444-10-0x000001709C820000-0x000001709C842000-memory.dmp

Filesize
136KB

Download
memory/2444-3-0x00007FF802EA0000-0x00007FF803961000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads