xworm | 78451006e30d3190099436f57a67c8ee6d0b4616c18d3a5e275ab2c4005bde5a

General

Target

Discord.exe
Size

70KB
MD5

7d5571fa55eb147bf59fc05350af2884
SHA1

d767a71b009cbd74147728584fbdf8688256898f
SHA256

78451006e30d3190099436f57a67c8ee6d0b4616c18d3a5e275ab2c4005bde5a
SHA512

f3257680c8646b069c6364ffb7256d89db3e86e03ef6ededdd226617aa6ffb404eef73a6cfa86766ce40183ae1668f526f28bf662bc54aa82e0568e08639c209
SSDEEP

1536:aofUVNYd+cUSlfkKablyGNC6Rdv5c6sl9OyYe+mdza:xMzYLUSiTblP8g5w9OyYwa

Score

10^/10

Malware Config

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/1748-1-0x0000000000660000-0x0000000000678000-memory.dmp	family_xworm
behavioral1/files/0x000a000000016985-58.dat	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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
1140	powershell.exe
1028	powershell.exe
3236	powershell.exe
2236	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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	Discord.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
4900	Runtime Broker.exe
456	Runtime Broker.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-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Runtime Broker = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Runtime Broker.exe"	Discord.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 27 IoCs

Web Service

T1102

flow	ioc
25	pastebin.com
27	pastebin.com
33	pastebin.com
47	pastebin.com
85	pastebin.com
89	pastebin.com
94	pastebin.com
24	pastebin.com
86	pastebin.com
87	pastebin.com
93	pastebin.com
64	pastebin.com
101	pastebin.com
51	pastebin.com
68	pastebin.com
38	pastebin.com
67	pastebin.com
75	pastebin.com
69	pastebin.com
82	pastebin.com
109	pastebin.com
41	pastebin.com
59	pastebin.com
78	pastebin.com
83	pastebin.com
88	pastebin.com
108	pastebin.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
21	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
2536	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1140	powershell.exe
1140	powershell.exe
1028	powershell.exe
1028	powershell.exe
3236	powershell.exe
3236	powershell.exe
2236	powershell.exe
2236	powershell.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	1748	Discord.exe
Token: SeDebugPrivilege	1140	powershell.exe
Token: SeDebugPrivilege	1028	powershell.exe
Token: SeDebugPrivilege	3236	powershell.exe
Token: SeDebugPrivilege	2236	powershell.exe
Token: SeDebugPrivilege	4900	Runtime Broker.exe
Token: SeDebugPrivilege	456	Runtime Broker.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1748 wrote to memory of 1140	1748	Discord.exe	88
PID 1748 wrote to memory of 1140	1748	Discord.exe	88
PID 1748 wrote to memory of 1028	1748	Discord.exe	90
PID 1748 wrote to memory of 1028	1748	Discord.exe	90
PID 1748 wrote to memory of 3236	1748	Discord.exe	92
PID 1748 wrote to memory of 3236	1748	Discord.exe	92
PID 1748 wrote to memory of 2236	1748	Discord.exe	94
PID 1748 wrote to memory of 2236	1748	Discord.exe	94
PID 1748 wrote to memory of 2536	1748	Discord.exe	96
PID 1748 wrote to memory of 2536	1748	Discord.exe	96

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\Discord.exe
"C:\Users\Admin\AppData\Local\Temp\Discord.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1748
- 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\Discord.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1140
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Discord.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1028
- 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\Runtime Broker.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3236
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Runtime Broker.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2236
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Runtime Broker" /tr "C:\Users\Admin\AppData\Local\Temp\Runtime Broker.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2536

C:\Users\Admin\AppData\Local\Temp\Runtime Broker.exe
"C:\Users\Admin\AppData\Local\Temp\Runtime Broker.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4900

C:\Users\Admin\AppData\Local\Temp\Runtime Broker.exe
"C:\Users\Admin\AppData\Local\Temp\Runtime Broker.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:456

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

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Runtime Broker.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
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
944B

MD5
34f595487e6bfd1d11c7de88ee50356a

SHA1
4caad088c15766cc0fa1f42009260e9a02f953bb

SHA256
0f9a4b52e01cb051052228a55d0515911b7ef5a8db3cf925528c746df511424d

SHA512
10976c5deaf9fac449e703e852c3b08d099f430de2d7c7b8e2525c35d63e28b890e5aab63feff9b20bca0aaf9f35a3ba411aee3fbeee9ea59f90ed25bd617a0b

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

Filesize
944B

MD5
2a38775ac6fc76abecd518bc1a47e86d

SHA1
29920d9706284fe155d94f8c6de060691d8ade4e

SHA256
e5691e264e0cbc066f27032b19d1fbbf8147bf40d81fa31fb7116716100a1e1e

SHA512
91b93f43a82944af7a265b7c7e206dc10d147bd88a131f30a14bdd793735a4be1ba0b427709f152fbb6b93ee26bc157533404bee94888dfe46c58497d2da41f3

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

Filesize
70KB

MD5
7d5571fa55eb147bf59fc05350af2884

SHA1
d767a71b009cbd74147728584fbdf8688256898f

SHA256
78451006e30d3190099436f57a67c8ee6d0b4616c18d3a5e275ab2c4005bde5a

SHA512
f3257680c8646b069c6364ffb7256d89db3e86e03ef6ededdd226617aa6ffb404eef73a6cfa86766ce40183ae1668f526f28bf662bc54aa82e0568e08639c209

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jlaxkb1h.wwy.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1140-15-0x00007FF901A00000-0x00007FF9024C1000-memory.dmp

Filesize
10.8MB

Download
memory/1140-18-0x00007FF901A00000-0x00007FF9024C1000-memory.dmp

Filesize
10.8MB

Download
memory/1140-14-0x00007FF901A00000-0x00007FF9024C1000-memory.dmp

Filesize
10.8MB

Download
memory/1140-10-0x000001CE730B0000-0x000001CE730D2000-memory.dmp

Filesize
136KB

Download
memory/1140-3-0x00007FF901A00000-0x00007FF9024C1000-memory.dmp

Filesize
10.8MB

Download
memory/1748-0-0x00007FF901A03000-0x00007FF901A05000-memory.dmp

Filesize
8KB

Download
memory/1748-57-0x00007FF901A00000-0x00007FF9024C1000-memory.dmp

Filesize
10.8MB

Download
memory/1748-2-0x00007FF901A00000-0x00007FF9024C1000-memory.dmp

Filesize
10.8MB

Download
memory/1748-1-0x0000000000660000-0x0000000000678000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads