xworm | 52853393ccfb323ec997ed2484f89aeccb790d30473447290d94214484920f6f

General

Target

52853393ccfb323ec997ed2484f89aeccb790d30473447290d94214484920f6fN.exe
Size

69KB
MD5

f9abc48b0f85f12ea5b7e89fecdd9840
SHA1

5990c39a8a55085e2a4135370dea95b94dfb7ded
SHA256

52853393ccfb323ec997ed2484f89aeccb790d30473447290d94214484920f6f
SHA512

e4ec7e40b573dbd6972cf473a595ac8f41e9541ef2fd21a956b3f6ca07b4e264b1b90b34c5dda1650c83c5b7b2df4ca4929727ae47c27be5573ff7c7199a3c80
SSDEEP

1536:PS5NzElzEF7D3EbZvzAlEM+bl7upO6bWO0Lxv:PS5dElAp3Elbez+bloWO09v

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

office.mscdn.org:7009

Attributes

install_file
USB.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/3992-1-0x0000000000A20000-0x0000000000A38000-memory.dmp	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2964	powershell.exe
1616	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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	52853393ccfb323ec997ed2484f89aeccb790d30473447290d94214484920f6fN.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1616	powershell.exe
1616	powershell.exe
2964	powershell.exe
2964	powershell.exe
2964	powershell.exe
3992	52853393ccfb323ec997ed2484f89aeccb790d30473447290d94214484920f6fN.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3992	52853393ccfb323ec997ed2484f89aeccb790d30473447290d94214484920f6fN.exe
Token: SeDebugPrivilege	1616	powershell.exe
Token: SeDebugPrivilege	2964	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3992	52853393ccfb323ec997ed2484f89aeccb790d30473447290d94214484920f6fN.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3992 wrote to memory of 1616	3992	52853393ccfb323ec997ed2484f89aeccb790d30473447290d94214484920f6fN.exe	89
PID 3992 wrote to memory of 1616	3992	52853393ccfb323ec997ed2484f89aeccb790d30473447290d94214484920f6fN.exe	89
PID 3992 wrote to memory of 2964	3992	52853393ccfb323ec997ed2484f89aeccb790d30473447290d94214484920f6fN.exe	95
PID 3992 wrote to memory of 2964	3992	52853393ccfb323ec997ed2484f89aeccb790d30473447290d94214484920f6fN.exe	95

C:\Users\Admin\AppData\Local\Temp\52853393ccfb323ec997ed2484f89aeccb790d30473447290d94214484920f6fN.exe
"C:\Users\Admin\AppData\Local\Temp\52853393ccfb323ec997ed2484f89aeccb790d30473447290d94214484920f6fN.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3992
- 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\52853393ccfb323ec997ed2484f89aeccb790d30473447290d94214484920f6fN.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1616
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '52853393ccfb323ec997ed2484f89aeccb790d30473447290d94214484920f6fN.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2964

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

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ms4334x5.052.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1616-12-0x00007FFC53830000-0x00007FFC542F1000-memory.dmp

Filesize
10.8MB

Download
memory/1616-13-0x00007FFC53830000-0x00007FFC542F1000-memory.dmp

Filesize
10.8MB

Download
memory/1616-14-0x00007FFC53830000-0x00007FFC542F1000-memory.dmp

Filesize
10.8MB

Download
memory/1616-15-0x00007FFC53830000-0x00007FFC542F1000-memory.dmp

Filesize
10.8MB

Download
memory/1616-18-0x00007FFC53830000-0x00007FFC542F1000-memory.dmp

Filesize
10.8MB

Download
memory/1616-2-0x0000023C0B130000-0x0000023C0B152000-memory.dmp

Filesize
136KB

Download
memory/3992-0-0x00007FFC53833000-0x00007FFC53835000-memory.dmp

Filesize
8KB

Download
memory/3992-1-0x0000000000A20000-0x0000000000A38000-memory.dmp

Filesize
96KB

Download
memory/3992-31-0x00007FFC53830000-0x00007FFC542F1000-memory.dmp

Filesize
10.8MB

Download
memory/3992-32-0x00007FFC53830000-0x00007FFC542F1000-memory.dmp

Filesize
10.8MB

Download

Analysis

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