xworm | dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1

Analysis

max time kernel
148s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
05/06/2024, 02:23

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General

Target
dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe
Size 68KB
Sample240605-ct9klacc34
SHA256 dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1
MD5 36aebfdc0729ce02890456ab1752580e
SHA1 032d342de07d92433be9271502e1237bea42f4b3
SHA512 723c78a93f4d7fbc0184c03ffa27ef8b9ad15dfb70f616fdba50d9effd859395d80b48e081e232d098af0db6b47e30f3e73be815225eae788e72819872358408
SSDEEP 1536:M7mKqGs6+TCSxWadbnj560hDA2c6/0rzYqMOUIslV:oK6Onpbnj42q5MOUIMV
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

5.tcp.eu.ngrok.io:15287

Attributes

Install_directory
%AppData%
install_file
.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/2140-1-0x0000000000DC0000-0x0000000000DD8000-memory.dmp	family_xworm
behavioral2/files/0x0006000000022a46-57.dat	family_xworm

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

Detects Windows executables referencing non-Windows User-Agents 2 IoCs

resource	yara_rule
behavioral2/memory/2140-1-0x0000000000DC0000-0x0000000000DD8000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x0006000000022a46-57.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

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
4176	powershell.exe
2040	powershell.exe
2704	powershell.exe
3404	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	dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.lnk	dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.lnk	dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe

Executes dropped EXE 3 IoCs

pid	Process
1276	.exe
2996	.exe
1760	.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-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Users\\Admin\\AppData\\Roaming\\.exe"	dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs

Web Service

T1102

flow	ioc
62	5.tcp.eu.ngrok.io
86	5.tcp.eu.ngrok.io
32	5.tcp.eu.ngrok.io
35	5.tcp.eu.ngrok.io

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
20	ip-api.com

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
4928	schtasks.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
4176	powershell.exe
4176	powershell.exe
4176	powershell.exe
2040	powershell.exe
2040	powershell.exe
2040	powershell.exe
2704	powershell.exe
2704	powershell.exe
2704	powershell.exe
3404	powershell.exe
3404	powershell.exe
3404	powershell.exe
2140	dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe
2140	dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	2140	dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe
Token: SeDebugPrivilege	4176	powershell.exe
Token: SeDebugPrivilege	2040	powershell.exe
Token: SeDebugPrivilege	2704	powershell.exe
Token: SeDebugPrivilege	3404	powershell.exe
Token: SeDebugPrivilege	2140	dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe
Token: SeDebugPrivilege	1276	.exe
Token: SeDebugPrivilege	2996	.exe
Token: SeDebugPrivilege	1760	.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2140	dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2140 wrote to memory of 4176	2140	dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe	95
PID 2140 wrote to memory of 4176	2140	dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe	95
PID 2140 wrote to memory of 2040	2140	dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe	99
PID 2140 wrote to memory of 2040	2140	dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe	99
PID 2140 wrote to memory of 2704	2140	dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe	103
PID 2140 wrote to memory of 2704	2140	dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe	103
PID 2140 wrote to memory of 3404	2140	dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe	105
PID 2140 wrote to memory of 3404	2140	dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe	105
PID 2140 wrote to memory of 4928	2140	dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe	108
PID 2140 wrote to memory of 4928	2140	dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe	108

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\dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe
"C:\Users\Admin\AppData\Local\Temp\dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2140
- 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\dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4176
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2040
- 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\.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2704
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3404
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "" /tr "C:\Users\Admin\AppData\Roaming\.exe"
  2⤵
  - Creates scheduled task(s)
  PID:4928

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=3920,i,1067197275908310731,12785105794523264014,262144 --variations-seed-version --mojo-platform-channel-handle=3528 /prefetch:8
1⤵
PID:860

C:\Users\Admin\AppData\Roaming\.exe
C:\Users\Admin\AppData\Roaming\.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1276

C:\Users\Admin\AppData\Roaming\.exe
C:\Users\Admin\AppData\Roaming\.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2996

C:\Users\Admin\AppData\Roaming\.exe
C:\Users\Admin\AppData\Roaming\.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1760

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\.exe.log
Size 654B
SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
MD5 2ff39f6c7249774be85fd60a8f9a245e
SHA1 684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA512 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1
MD5 SHA1 SHA512

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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 2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d
MD5 6d3e9c29fe44e90aae6ed30ccf799ca8
SHA1 c7974ef72264bbdf13a2793ccf1aed11bc565dce
SHA512 60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 0c557845aab1da497bbff0e8fbe65cabf4cb2804b97ba8ae8c695a528af70870
MD5 83685d101174171875b4a603a6c2a35c
SHA1 37be24f7c4525e17fa18dbd004186be3a9209017
SHA512 005a97a8e07b1840abdcef86a7881fd9bdc8acbfdf3eafe1dceb6374060626d81d789e57d87ca4096a39e28d5cca00f8945edff0a747591691ae75873d2b3fb5
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 77a94ef8c4258445d538a6006ffadb05afdf888f6f044e1e5466b981a07f16c5
MD5 da5c82b0e070047f7377042d08093ff4
SHA1 89d05987cd60828cca516c5c40c18935c35e8bd3
SHA512 7360311a3c97b73dd3f6d7179cd979e0e20d69f380d38292447e17e369087d9dd5acb66cd0cbdd95ac4bfb16e5a1b86825f835a8d45b14ea9812102cff59704b
MD5 SHA1 SHA512

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__PSScriptPolicyTest_dywjjp02.a1m.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dywjjp02.a1m.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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.exe

Path C:\Users\Admin\AppData\Roaming\.exe
Size 68KB
SHA256 dc8d4016e553d83b1505f3d172d41b4044bb6ebe8f11b79261c53a8313d2bfb1
MD5 36aebfdc0729ce02890456ab1752580e
SHA1 032d342de07d92433be9271502e1237bea42f4b3
SHA512 723c78a93f4d7fbc0184c03ffa27ef8b9ad15dfb70f616fdba50d9effd859395d80b48e081e232d098af0db6b47e30f3e73be815225eae788e72819872358408
SSDEEP 1536:M7mKqGs6+TCSxWadbnj560hDA2c6/0rzYqMOUIslV:oK6Onpbnj42q5MOUIMV
MD5 SHA1 SHA512 SSDEEP

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memory/2140-0-0x00007FFBF90F3000-0x00007FFBF90F5000-memory.dmp

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memory/2140-2-0x00007FFBF90F0000-0x00007FFBF9BB1000-memory.dmp

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memory/2140-60-0x00007FFBF90F3000-0x00007FFBF90F5000-memory.dmp

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memory/2140-61-0x00007FFBF90F0000-0x00007FFBF9BB1000-memory.dmp

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memory/2140-1-0x0000000000DC0000-0x0000000000DD8000-memory.dmp

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memory/4176-14-0x00007FFBF90F0000-0x00007FFBF9BB1000-memory.dmp

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memory/4176-15-0x00007FFBF90F0000-0x00007FFBF9BB1000-memory.dmp

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memory/4176-18-0x00007FFBF90F0000-0x00007FFBF9BB1000-memory.dmp

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memory/4176-13-0x00007FFBF90F0000-0x00007FFBF9BB1000-memory.dmp

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memory/4176-3-0x00000237BA860000-0x00000237BA882000-memory.dmp

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