xworm | fdc5bfbfef816556a6538fc3a59163a2ff77aedc3fc146285612067ce5cacdca

General

Target

Test7000.exe
Size

39KB
MD5

ec823d617d239ce10f01656b18c5d0e4
SHA1

8f17296536c4096ec178aeea963d620210e6d3d2
SHA256

fdc5bfbfef816556a6538fc3a59163a2ff77aedc3fc146285612067ce5cacdca
SHA512

635a8f2ae11899e91a7a46b5ec87ee5efab98878fe8b3fc22e9d8d20e7a3d88e0cd75ce190f1503ad1ac1c331944086b639e2657aabd55055e6fe3dc7eed2bf1
SSDEEP

768:yftYec/H/fCfTvQ5hxx3CAFWPG9EW6OOwhWQmO6i:yftYecXKf2RFv9EW6OOwY5Od

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

Mutex

BFonurWjZ07Ruqo3

Attributes

Install_directory
%AppData%
install_file
svchost.exe
pastebin_url
https://pastebin.com/raw/F9G6bgDh

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/4956-1-0x0000000000870000-0x0000000000880000-memory.dmp	family_xworm
behavioral1/files/0x001f00000002ab91-57.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
5532	powershell.exe
2716	powershell.exe
2188	powershell.exe
5980	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	Test7000.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	Test7000.exe

Executes dropped EXE 2 IoCs

pid	Process
224	svchost.exe
4760	svchost.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-1-5-21-2584844841-1405471295-1760131749-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	Test7000.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 47 IoCs

Web Service

T1102

flow	ioc
44	pastebin.com
2	pastebin.com
4	pastebin.com
7	pastebin.com
14	pastebin.com
32	pastebin.com
40	pastebin.com
43	pastebin.com
47	pastebin.com
29	pastebin.com
1	pastebin.com
12	pastebin.com
15	pastebin.com
16	pastebin.com
20	pastebin.com
23	pastebin.com
25	pastebin.com
33	pastebin.com
42	pastebin.com
17	pastebin.com
30	pastebin.com
34	pastebin.com
41	pastebin.com
48	pastebin.com
10	pastebin.com
11	pastebin.com
21	pastebin.com
38	pastebin.com
5	pastebin.com
19	pastebin.com
35	pastebin.com
46	pastebin.com
6	pastebin.com
24	pastebin.com
36	pastebin.com
37	pastebin.com
39	pastebin.com
45	pastebin.com
13	pastebin.com
18	pastebin.com
22	pastebin.com
26	pastebin.com
27	pastebin.com
49	pastebin.com
8	pastebin.com
9	pastebin.com
28	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
1140	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
5532	powershell.exe
5532	powershell.exe
2716	powershell.exe
2716	powershell.exe
2188	powershell.exe
2188	powershell.exe
5980	powershell.exe
5980	powershell.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	4956	Test7000.exe
Token: SeDebugPrivilege	5532	powershell.exe
Token: SeDebugPrivilege	2716	powershell.exe
Token: SeDebugPrivilege	2188	powershell.exe
Token: SeDebugPrivilege	5980	powershell.exe
Token: SeDebugPrivilege	224	svchost.exe
Token: SeDebugPrivilege	4760	svchost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4956 wrote to memory of 5532	4956	Test7000.exe	77
PID 4956 wrote to memory of 5532	4956	Test7000.exe	77
PID 4956 wrote to memory of 2716	4956	Test7000.exe	79
PID 4956 wrote to memory of 2716	4956	Test7000.exe	79
PID 4956 wrote to memory of 2188	4956	Test7000.exe	81
PID 4956 wrote to memory of 2188	4956	Test7000.exe	81
PID 4956 wrote to memory of 5980	4956	Test7000.exe	83
PID 4956 wrote to memory of 5980	4956	Test7000.exe	83
PID 4956 wrote to memory of 1140	4956	Test7000.exe	85
PID 4956 wrote to memory of 1140	4956	Test7000.exe	85

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\Test7000.exe
"C:\Users\Admin\AppData\Local\Temp\Test7000.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4956
- 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\Test7000.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5532
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Test7000.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2716
- 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'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2188
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5980
- 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.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1140

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:224

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4760

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
2KB

MD5
98792f2d1b3d638630fa601df6823aed

SHA1
ee50e507b28f67314752754cce5b2fd3fe739241

SHA256
3f63c900813de99733f162952bb27d374ba2e07d7751965b4de4a557cb4478ce

SHA512
b06c3057f15b00d4d04ac35943e9c2fd44031a72043b79131b0c6a7617ad9c4f2480633bd78ba8d3be61899b5182d2cab6889c0a82e17e9b8a363efed4b69f4b

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

Filesize
654B

MD5
2cbbb74b7da1f720b48ed31085cbd5b8

SHA1
79caa9a3ea8abe1b9c4326c3633da64a5f724964

SHA256
e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

SHA512
ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

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

Filesize
944B

MD5
e22ccc3888dd5c8395c8003fc994aedb

SHA1
5e78c4996fc69129221d12e8463753cf7d126466

SHA256
1c09381c9028e4c5f270a81130f7bc8d7428e5014cb13670c89af290f7ba4904

SHA512
6adf7abdb4ae1b8f37ee8cdc1beee9ef41aa3de37838e32ca03bcb58b8ee7000d9c05fc909db6c32dc139b092f9c820cfa1f2199323e5a2acdbc4514115fc8cb

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

Filesize
944B

MD5
80707036df540b6657f9d443b449e3c3

SHA1
b3e7d5d97274942164bf93c8c4b8a9b68713f46f

SHA256
6651e5f976619cef991deef61776cf43d4c4b3d7c551dd2192b647df71586ab0

SHA512
65e41e9e730fed4f7a7d3f6f35875a16948b897f87c8c70b371fd0ac7f0951814f6a75e7698665194bbc65a3665a684e7be229e7e24193b50483ae7e55eebf4f

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

Filesize
944B

MD5
f7cd1e9d728534ab4e1fe33867ea02aa

SHA1
44dbc679f1845534117197a9117ca88bdff53e76

SHA256
e53f523200dea7a11dee36c71f2e4855819ed9de705423143879c70a99fcb4a0

SHA512
7ea29ce7df6177f75a55520710d79fe3dcfe47cc6eba3b1c3ac20f8e6372621670b68e836210b56a8bf8e0a0fd48915870dcbd536aa62560970d863083d150a8

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cdkomupw.s1r.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
39KB

MD5
ec823d617d239ce10f01656b18c5d0e4

SHA1
8f17296536c4096ec178aeea963d620210e6d3d2

SHA256
fdc5bfbfef816556a6538fc3a59163a2ff77aedc3fc146285612067ce5cacdca

SHA512
635a8f2ae11899e91a7a46b5ec87ee5efab98878fe8b3fc22e9d8d20e7a3d88e0cd75ce190f1503ad1ac1c331944086b639e2657aabd55055e6fe3dc7eed2bf1

Download Submit
memory/4956-1-0x0000000000870000-0x0000000000880000-memory.dmp

Filesize
64KB

Download
memory/4956-0-0x00007FF912A73000-0x00007FF912A75000-memory.dmp

Filesize
8KB

Download
memory/4956-56-0x00007FF912A70000-0x00007FF913532000-memory.dmp

Filesize
10.8MB

Download
memory/4956-55-0x00007FF912A70000-0x00007FF913532000-memory.dmp

Filesize
10.8MB

Download
memory/4956-54-0x00007FF912A73000-0x00007FF912A75000-memory.dmp

Filesize
8KB

Download
memory/5532-11-0x00007FF912A70000-0x00007FF913532000-memory.dmp

Filesize
10.8MB

Download
memory/5532-18-0x00007FF912A70000-0x00007FF913532000-memory.dmp

Filesize
10.8MB

Download
memory/5532-17-0x00007FF912A70000-0x00007FF913532000-memory.dmp

Filesize
10.8MB

Download
memory/5532-14-0x00007FF912A70000-0x00007FF913532000-memory.dmp

Filesize
10.8MB

Download
memory/5532-13-0x00007FF912A70000-0x00007FF913532000-memory.dmp

Filesize
10.8MB

Download
memory/5532-12-0x00007FF912A70000-0x00007FF913532000-memory.dmp

Filesize
10.8MB

Download
memory/5532-10-0x000001C330B10000-0x000001C330B32000-memory.dmp

Filesize
136KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads