xworm | bea75b57f940b13d5bfcb05a0c3ae1def9d2d25f6c3115fc7b2bf85232175672

General

Target

msedge.exe
Size

165KB
MD5

8c92b315d88907a31ad9eaa934a60660
SHA1

89c26c8a1f5b2db85e628a6526c9431e7febe5f8
SHA256

bea75b57f940b13d5bfcb05a0c3ae1def9d2d25f6c3115fc7b2bf85232175672
SHA512

b294fd15ac63bbd7cfd444c9df5a03c7bce8bc98d2b2d2011e5290638fba689ff083260ed60688cc4b0a0a59299dda0b1cc09ba8f63daf92efbeeaed604ebfc2
SSDEEP

3072:DJFv9ssOwjRUGKXs+S++7KFSbxeY+qDDrMm:jv9cGqStKEbxI

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

Mutex

fSptE7osVO19YSsZ

Attributes

Install_directory
%AppData%
install_file
msedge.exe
pastebin_url
https://pastebin.com/raw/eZa6J63T

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/2532-1-0x0000000000BC0000-0x0000000000BEE000-memory.dmp	family_xworm
behavioral1/files/0x002100000002aab1-57.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
2632	powershell.exe
3520	powershell.exe
1420	powershell.exe
2184	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
3792	msedge.exe
1468	msedge.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 45 IoCs

Web Service

T1102

flow	ioc
12	pastebin.com
44	pastebin.com
5	pastebin.com
7	pastebin.com
19	pastebin.com
26	pastebin.com
32	pastebin.com
33	pastebin.com
45	pastebin.com
4	pastebin.com
17	pastebin.com
24	pastebin.com
31	pastebin.com
40	pastebin.com
1	pastebin.com
14	pastebin.com
21	pastebin.com
25	pastebin.com
42	pastebin.com
43	pastebin.com
9	pastebin.com
15	pastebin.com
16	pastebin.com
28	pastebin.com
34	pastebin.com
36	pastebin.com
41	pastebin.com
46	pastebin.com
6	pastebin.com
10	pastebin.com
13	pastebin.com
18	pastebin.com
27	pastebin.com
35	pastebin.com
37	pastebin.com
11	pastebin.com
30	pastebin.com
47	pastebin.com
2	pastebin.com
8	pastebin.com
20	pastebin.com
22	pastebin.com
23	pastebin.com
38	pastebin.com
39	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
4736	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3520	powershell.exe
3520	powershell.exe
1420	powershell.exe
1420	powershell.exe
2184	powershell.exe
2184	powershell.exe
2632	powershell.exe
2632	powershell.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2532	msedge.exe
Token: SeDebugPrivilege	3520	powershell.exe
Token: SeDebugPrivilege	1420	powershell.exe
Token: SeDebugPrivilege	2184	powershell.exe
Token: SeDebugPrivilege	2632	powershell.exe
Token: SeDebugPrivilege	3792	msedge.exe
Token: SeDebugPrivilege	1468	msedge.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 3520	2532	msedge.exe	77
PID 2532 wrote to memory of 3520	2532	msedge.exe	77
PID 2532 wrote to memory of 1420	2532	msedge.exe	79
PID 2532 wrote to memory of 1420	2532	msedge.exe	79
PID 2532 wrote to memory of 2184	2532	msedge.exe	81
PID 2532 wrote to memory of 2184	2532	msedge.exe	81
PID 2532 wrote to memory of 2632	2532	msedge.exe	83
PID 2532 wrote to memory of 2632	2532	msedge.exe	83
PID 2532 wrote to memory of 4736	2532	msedge.exe	85
PID 2532 wrote to memory of 4736	2532	msedge.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\msedge.exe
"C:\Users\Admin\AppData\Local\Temp\msedge.exe"
1⤵
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
- 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\Local\Temp\msedge.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3520
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'msedge.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1420
- 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\msedge.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2184
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'msedge.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2632
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "msedge" /tr "C:\Users\Admin\AppData\Roaming\msedge.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4736

C:\Users\Admin\AppData\Roaming\msedge.exe
C:\Users\Admin\AppData\Roaming\msedge.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3792

C:\Users\Admin\AppData\Roaming\msedge.exe
C:\Users\Admin\AppData\Roaming\msedge.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1468

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

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

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\Local\Microsoft\CLR_v4.0\UsageLogs\msedge.exe.log

Filesize
654B

MD5
2cbbb74b7da1f720b48ed31085cbd5b8

SHA1
79caa9a3ea8abe1b9c4326c3633da64a5f724964

SHA256
e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

SHA512
ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

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

Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
2e8eb51096d6f6781456fef7df731d97

SHA1
ec2aaf851a618fb43c3d040a13a71997c25bda43

SHA256
96bfd9dd5883329927fe8c08b8956355a1a6ceb30ceeb5d4252b346df32bc864

SHA512
0a73dc9a49f92d9dd556c2ca2e36761890b3538f355ee1f013e7cf648d8c4d065f28046cd4a167db3dea304d1fbcbcea68d11ce6e12a3f20f8b6c018a60422d2

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

Filesize
944B

MD5
80b42fe4c6cf64624e6c31e5d7f2d3b3

SHA1
1f93e7dd83b86cb900810b7e3e43797868bf7d93

SHA256
ee20a5b38a6674366efda276dbbf0b43eb54efd282acfc1033042f6b53a80d4d

SHA512
83c1c744c15a8b427a1d3af677ec3bfd0353875a60fe886c41570981e17467ebbb59619b960ca8c5c3ab1430946b0633ea200b7e7d84ab6dca88b60c50055573

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

Filesize
944B

MD5
c24caab1947646fcc49d6158d78a56f5

SHA1
aa2cd00401eb273991f2d6fdc739d473ff6e8319

SHA256
0696315ad3df3edd5426276c265bd13d8bd2a0d101548bcaedd82e2aebde655a

SHA512
35e1d214dfb4c7f078496e3e303aea152aa48f9db5b9aa188aeb82b541582ed77f60bfe8712836232b5aa31d3645edfc79b42c8f90e92e06778f21aa44971bff

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lwavtbch.0z1.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
165KB

MD5
8c92b315d88907a31ad9eaa934a60660

SHA1
89c26c8a1f5b2db85e628a6526c9431e7febe5f8

SHA256
bea75b57f940b13d5bfcb05a0c3ae1def9d2d25f6c3115fc7b2bf85232175672

SHA512
b294fd15ac63bbd7cfd444c9df5a03c7bce8bc98d2b2d2011e5290638fba689ff083260ed60688cc4b0a0a59299dda0b1cc09ba8f63daf92efbeeaed604ebfc2

Download Submit
memory/2532-1-0x0000000000BC0000-0x0000000000BEE000-memory.dmp

Filesize
184KB

Download
memory/2532-0-0x00007FFF1FA13000-0x00007FFF1FA15000-memory.dmp

Filesize
8KB

Download
memory/2532-56-0x00007FFF1FA10000-0x00007FFF204D2000-memory.dmp

Filesize
10.8MB

Download
memory/2532-55-0x00007FFF1FA13000-0x00007FFF1FA15000-memory.dmp

Filesize
8KB

Download
memory/2532-54-0x00007FFF1FA10000-0x00007FFF204D2000-memory.dmp

Filesize
10.8MB

Download
memory/3520-10-0x0000029D9C3D0000-0x0000029D9C3F2000-memory.dmp

Filesize
136KB

Download
memory/3520-18-0x00007FFF1FA10000-0x00007FFF204D2000-memory.dmp

Filesize
10.8MB

Download
memory/3520-15-0x00007FFF1FA10000-0x00007FFF204D2000-memory.dmp

Filesize
10.8MB

Download
memory/3520-14-0x00007FFF1FA10000-0x00007FFF204D2000-memory.dmp

Filesize
10.8MB

Download
memory/3520-13-0x00007FFF1FA10000-0x00007FFF204D2000-memory.dmp

Filesize
10.8MB

Download
memory/3520-12-0x00007FFF1FA10000-0x00007FFF204D2000-memory.dmp

Filesize
10.8MB

Download
memory/3520-11-0x00007FFF1FA10000-0x00007FFF204D2000-memory.dmp

Filesize
10.8MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads