xworm | 6af699d5b423e9a27be4422622b30d0d3e8ebdd259e192ed535c89183f266315

Analysis

max time kernel
125s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
07/06/2024, 00:13

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General

Target
Loader.exe
Size 60KB
Sample240607-ah2phafc55
SHA256 6af699d5b423e9a27be4422622b30d0d3e8ebdd259e192ed535c89183f266315
MD5 5aa0bf1d5dc1e0b454a0db99b6f5f854
SHA1 e0e693a23154ba031c06ddaa6927277d303ab6fc
SHA512 5d82a3606dcc7a03e92c9948333249b082a4e341342918db93113a13565bc08a447f943ceb60b1a2782ff026d784358bf5f2648ff09cfe41be4a5210747b2880
SSDEEP 1536:PQXTdHRSiY4TLufp7NkbTNr9QSxu6rOLlIKgy:PedHEiY8SRNkbTQSFOLlIKgy
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

parents-roy.gl.at.ply.gg:13511

Attributes

Install_directory
%Temp%
install_file
Update.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/2900-1-0x0000000000EE0000-0x0000000000EF6000-memory.dmp	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
2424	powershell.exe
3896	powershell.exe
3112	powershell.exe
1800	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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	Loader.exe

Drops startup file 2 IoCs

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

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
1800	powershell.exe
1800	powershell.exe
1800	powershell.exe
2424	powershell.exe
2424	powershell.exe
2424	powershell.exe
3896	powershell.exe
3896	powershell.exe
3896	powershell.exe
3112	powershell.exe
3112	powershell.exe
3112	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2900	Loader.exe
Token: SeDebugPrivilege	1800	powershell.exe
Token: SeDebugPrivilege	2424	powershell.exe
Token: SeDebugPrivilege	3896	powershell.exe
Token: SeDebugPrivilege	3112	powershell.exe
Token: SeDebugPrivilege	2900	Loader.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2900 wrote to memory of 1800	2900	Loader.exe	95
PID 2900 wrote to memory of 1800	2900	Loader.exe	95
PID 2900 wrote to memory of 2424	2900	Loader.exe	99
PID 2900 wrote to memory of 2424	2900	Loader.exe	99
PID 2900 wrote to memory of 3896	2900	Loader.exe	101
PID 2900 wrote to memory of 3896	2900	Loader.exe	101
PID 2900 wrote to memory of 3112	2900	Loader.exe	104
PID 2900 wrote to memory of 3112	2900	Loader.exe	104

C:\Users\Admin\AppData\Local\Temp\Loader.exe
"C:\Users\Admin\AppData\Local\Temp\Loader.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2900
- 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\Loader.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1800
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Loader.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2424
- 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\Update.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3896
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Update.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3112

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4744,i,15142778360084620907,1763097090506261076,262144 --variations-seed-version --mojo-platform-channel-handle=1040 /prefetch:8
1⤵
PID:2340

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb
MD5 77d622bb1a5b250869a3238b9bc1402b
SHA1 d47f4003c2554b9dfc4c16f22460b331886b191b
SHA512 d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98
MD5 eb1ad317bd25b55b2bbdce8a28a74a94
SHA1 98a3978be4d10d62e7411946474579ee5bdc5ea6
SHA512 d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 55b1d8021c4eb4c3c0d75e3ed7a4eb30cd0123e3d69f32eeb596fe4ffec05abf
MD5 22310ad6749d8cc38284aa616efcd100
SHA1 440ef4a0a53bfa7c83fe84326a1dff4326dcb515
SHA512 2ef08e2ee15bb86695fe0c10533014ffed76ececc6e579d299d3365fafb7627f53e32e600bb6d872b9f58aca94f8cb7e1e94cdfd14777527f7f0aa019d9c6def
MD5 SHA1 SHA512

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__PSScriptPolicyTest_lqsll2bc.qw2.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lqsll2bc.qw2.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/1800-13-0x00007FFAFC2D0000-0x00007FFAFCD91000-memory.dmp

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memory/1800-2-0x000001A23CB60000-0x000001A23CB82000-memory.dmp

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memory/1800-17-0x00007FFAFC2D0000-0x00007FFAFCD91000-memory.dmp

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memory/1800-18-0x00007FFAFC2D0000-0x00007FFAFCD91000-memory.dmp

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memory/1800-14-0x00007FFAFC2D0000-0x00007FFAFCD91000-memory.dmp

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memory/1800-12-0x00007FFAFC2D0000-0x00007FFAFCD91000-memory.dmp

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memory/2424-33-0x0000026C3A9E0000-0x0000026C3AA28000-memory.dmp

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memory/2424-32-0x0000026C3A9C0000-0x0000026C3A9DE000-memory.dmp

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memory/2424-31-0x0000026C22030000-0x0000026C22049000-memory.dmp

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memory/2900-0-0x00007FFAFC2D3000-0x00007FFAFC2D5000-memory.dmp

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memory/2900-1-0x0000000000EE0000-0x0000000000EF6000-memory.dmp

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memory/2900-63-0x00007FFAFC2D0000-0x00007FFAFCD91000-memory.dmp

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memory/2900-64-0x00007FFAFC2D0000-0x00007FFAFCD91000-memory.dmp

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memory/3896-46-0x000002AAFD570000-0x000002AAFD58E000-memory.dmp

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memory/3896-47-0x000002AAFD590000-0x000002AAFD5D8000-memory.dmp

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memory/3896-45-0x000002AAFD1D0000-0x000002AAFD1E9000-memory.dmp

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