xworm | dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78

General

Target

dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe
Size

86KB
MD5

de16a00b42e978595cbd917d10ceb984
SHA1

fccc091d3ab6b4c26449e3a4ad0bc5eda73b6a7c
SHA256

dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78
SHA512

aea3e18957bb3edbcf6a08fc43ed0e7792cfcd5a3c1a4b8a017b92e0467129a3879d3282ef73b505e49440fb34f294fc7c50712f6c8bd11b55d710004fed3122
SSDEEP

1536:EW8TIhv1Cz1WeVB/afL8IT+DQX9Ea+bnJEsmTtjD0H6JVapKVX5OwoKxA35:ER0Z1VhLTFr+bn2z1D0OVacJOXKK

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

80.133.88.87:8848

Attributes

Install_directory
%AppData%
install_file
BrowserUpdater.exe
telegram
https://api.telegram.org/bot7409084272:AAGfvawizs5psSM16en9CLFzI0ZQnCNB3SA

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1872-1-0x00000000000B0000-0x00000000000CC000-memory.dmp	family_xworm
behavioral2/files/0x000e000000023c5f-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
3012	powershell.exe
3604	powershell.exe
4208	powershell.exe
2360	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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe

Executes dropped EXE 2 IoCs

pid	Process
3280	BrowserUpdater.exe
4688	BrowserUpdater.exe

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
4136	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2360	powershell.exe
2360	powershell.exe
3012	powershell.exe
3012	powershell.exe
3604	powershell.exe
3604	powershell.exe
4208	powershell.exe
4208	powershell.exe
1872	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	1872	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe
Token: SeDebugPrivilege	2360	powershell.exe
Token: SeDebugPrivilege	3012	powershell.exe
Token: SeDebugPrivilege	3604	powershell.exe
Token: SeDebugPrivilege	4208	powershell.exe
Token: SeDebugPrivilege	1872	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe
Token: SeDebugPrivilege	3280	BrowserUpdater.exe
Token: SeDebugPrivilege	4688	BrowserUpdater.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1872	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1872 wrote to memory of 2360	1872	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	86
PID 1872 wrote to memory of 2360	1872	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	86
PID 1872 wrote to memory of 3012	1872	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	88
PID 1872 wrote to memory of 3012	1872	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	88
PID 1872 wrote to memory of 3604	1872	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	90
PID 1872 wrote to memory of 3604	1872	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	90
PID 1872 wrote to memory of 4208	1872	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	92
PID 1872 wrote to memory of 4208	1872	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	92
PID 1872 wrote to memory of 4136	1872	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	94
PID 1872 wrote to memory of 4136	1872	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	94

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\dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe
"C:\Users\Admin\AppData\Local\Temp\dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1872
- 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\dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2360
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3012
- 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\BrowserUpdater.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3604
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'BrowserUpdater.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4208
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "BrowserUpdater" /tr "C:\Users\Admin\AppData\Roaming\BrowserUpdater.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4136

C:\Users\Admin\AppData\Roaming\BrowserUpdater.exe
C:\Users\Admin\AppData\Roaming\BrowserUpdater.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3280

C:\Users\Admin\AppData\Roaming\BrowserUpdater.exe
C:\Users\Admin\AppData\Roaming\BrowserUpdater.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4688

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

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\BrowserUpdater.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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
944B

MD5
aeceee3981c528bdc5e1c635b65d223d

SHA1
de9939ed37edca6772f5cdd29f6a973b36b7d31b

SHA256
b99f3c778a047e0348c92c16e0419fa29418d10d0fec61ad8283e92a094a2b32

SHA512
df48285f38e9284efdbd9f8d99e2e94a46fb5465953421ab88497b73ae06895b98ea5c98796560810a6f342c31a9112ea87e03cd3e267fd8518d7585f492a8fb

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

Filesize
944B

MD5
6d14ccefeb263594e60b1765e131f7a3

SHA1
4a9ebdc0dff58645406c40b7b140e1b174756721

SHA256
57cd435c8b2bf10a2c77698301789c032e1b6b623ff1420c72e8bca0b10f1e5c

SHA512
2013a26123f72a4106524fd9d7389ac4654f97033d22707efc084fb2a3ad01c298eb64f01bb64861ab603615022dbe7cfc97475346edb16b3ba72e905127f101

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_h2ejqk31.shz.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
86KB

MD5
de16a00b42e978595cbd917d10ceb984

SHA1
fccc091d3ab6b4c26449e3a4ad0bc5eda73b6a7c

SHA256
dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78

SHA512
aea3e18957bb3edbcf6a08fc43ed0e7792cfcd5a3c1a4b8a017b92e0467129a3879d3282ef73b505e49440fb34f294fc7c50712f6c8bd11b55d710004fed3122

Download Submit
memory/1872-1-0x00000000000B0000-0x00000000000CC000-memory.dmp

Filesize
112KB

Download
memory/1872-0-0x00007FFD8D673000-0x00007FFD8D675000-memory.dmp

Filesize
8KB

Download
memory/1872-56-0x00007FFD8D670000-0x00007FFD8E131000-memory.dmp

Filesize
10.8MB

Download
memory/1872-55-0x00007FFD8D673000-0x00007FFD8D675000-memory.dmp

Filesize
8KB

Download
memory/1872-54-0x00007FFD8D670000-0x00007FFD8E131000-memory.dmp

Filesize
10.8MB

Download
memory/2360-12-0x00007FFD8D670000-0x00007FFD8E131000-memory.dmp

Filesize
10.8MB

Download
memory/2360-18-0x00007FFD8D670000-0x00007FFD8E131000-memory.dmp

Filesize
10.8MB

Download
memory/2360-15-0x00007FFD8D670000-0x00007FFD8E131000-memory.dmp

Filesize
10.8MB

Download
memory/2360-14-0x00007FFD8D670000-0x00007FFD8E131000-memory.dmp

Filesize
10.8MB

Download
memory/2360-13-0x00007FFD8D670000-0x00007FFD8E131000-memory.dmp

Filesize
10.8MB

Download
memory/2360-7-0x00000194338E0000-0x0000019433902000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads