xworm | 0cea3395a719813d0a1bab5a21ded480f70b6da0cff2b8ff632a0d42bee303fe

General

Target

X64v1.4.exe
Size

76KB
MD5

1a6ce13e6ca5801d773725074d8127a6
SHA1

abc2d87c256950524ea6bc06466b7ad63dec042f
SHA256

0cea3395a719813d0a1bab5a21ded480f70b6da0cff2b8ff632a0d42bee303fe
SHA512

461708a2a62701c4af06d54e0c86fa5380c12a464a1e208c539f7835f4c5b0f3d4064377674759e0f9b237971b9414f9c39acf9da455aabacdb8ca2ea1018d10
SSDEEP

1536:F01NQngfiQr1jx9/9EBeJKYamex+3tDUUGcDl3nIAd7CK8byIMn:y1KgF/9+FYajk3tDUUGCBIa7CK8by1

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

80.76.49.15:1111

Attributes

Install_directory
%AppData%
install_file
Xclient.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000a000000023d19-6.dat	family_xworm
behavioral2/memory/2832-15-0x0000000000640000-0x0000000000656000-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 4 IoCs

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

execution

PowerShell

T1059.001

pid	Process
1380	powershell.exe
3556	powershell.exe
4880	powershell.exe
2136	powershell.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-1170604239-850860757-3112005715-1000\Control Panel\International\Geo\Nation	X64v1.4.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000\Control Panel\International\Geo\Nation	x64 Loader1.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Xclient.lnk	x64 Loader1.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Xclient.lnk	x64 Loader1.exe

Executes dropped EXE 1 IoCs

pid	Process
2832	x64 Loader1.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000_Classes\Local Settings	X64v1.4.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2824	NOTEPAD.EXE

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1380	powershell.exe
1380	powershell.exe
3556	powershell.exe
3556	powershell.exe
4880	powershell.exe
4880	powershell.exe
2136	powershell.exe
2136	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2832	x64 Loader1.exe
Token: SeDebugPrivilege	1380	powershell.exe
Token: SeDebugPrivilege	3556	powershell.exe
Token: SeDebugPrivilege	4880	powershell.exe
Token: SeDebugPrivilege	2136	powershell.exe
Token: SeDebugPrivilege	2832	x64 Loader1.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3288 wrote to memory of 2832	3288	X64v1.4.exe	84
PID 3288 wrote to memory of 2832	3288	X64v1.4.exe	84
PID 3288 wrote to memory of 2824	3288	X64v1.4.exe	85
PID 3288 wrote to memory of 2824	3288	X64v1.4.exe	85
PID 2832 wrote to memory of 1380	2832	x64 Loader1.exe	89
PID 2832 wrote to memory of 1380	2832	x64 Loader1.exe	89
PID 2832 wrote to memory of 3556	2832	x64 Loader1.exe	93
PID 2832 wrote to memory of 3556	2832	x64 Loader1.exe	93
PID 2832 wrote to memory of 4880	2832	x64 Loader1.exe	95
PID 2832 wrote to memory of 4880	2832	x64 Loader1.exe	95
PID 2832 wrote to memory of 2136	2832	x64 Loader1.exe	99
PID 2832 wrote to memory of 2136	2832	x64 Loader1.exe	99

C:\Users\Admin\AppData\Local\Temp\X64v1.4.exe
"C:\Users\Admin\AppData\Local\Temp\X64v1.4.exe"
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3288
- C:\Users\Admin\AppData\Roaming\x64 Loader1.exe
  "C:\Users\Admin\AppData\Roaming\x64 Loader1.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2832
- - 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\x64 Loader1.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1380
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'x64 Loader1.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3556
- - 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\Xclient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4880
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Xclient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2136
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\thankyou.txt
  2⤵
  - Opens file in notepad (likely ransom note)
  PID:2824

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
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
944B

MD5
b1a1d8b05525b7b0c5babfd80488c1f2

SHA1
c85bbd6b7d0143676916c20fd52720499c2bb5c6

SHA256
adad192fc86c2f939fd3f70cb9ad323139a4e100f7c90b4454e2c53bdbc9b705

SHA512
346c6513c1373bab58439e37d3f75de1c5c587d7eb27076cf696e885a027b3b38d70b585839d1a2e7f2270cdcf0dac8c1fdff799f3b1158242ae9e3364c2a06e

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

Filesize
944B

MD5
a7cc007980e419d553568a106210549a

SHA1
c03099706b75071f36c3962fcc60a22f197711e0

SHA256
a5735921fc72189c8bf577f3911486cf031708dc8d6bc764fe3e593c0a053165

SHA512
b9aaf29403c467daef80a1ae87478afc33b78f4e1ca16189557011bb83cf9b3e29a0f85c69fa209c45201fb28baca47d31756eee07b79c6312c506e8370f7666

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jnv2foxa.p0g.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\thankyou.txt

Filesize
96B

MD5
56dda8c046c5eb736b67cf2c14ce4c0a

SHA1
15e0bd23b36d009de50aad2960845a4fcc7eb6bc

SHA256
b1bd21a766847c9fc97f742a485db33d204b3af8b836735fdb0e2a3131889b95

SHA512
7615c3b639b879489f66e5251a21a02a9bb3fb4bf270e770857959e881abad26697c954ce06c83f76911fe8e9303fd4cd2e795f0036b6e73da6e2e4b356c66b4

Download Submit
C:\Users\Admin\AppData\Roaming\x64 Loader1.exe

Filesize
62KB

MD5
e23391d72658e5472a976b0e98b18722

SHA1
58a608aa7e854d6e68217b7e8a1b7e03685caf11

SHA256
e744dd225012b9e99b02f3495a3d78810e67ca0fb1b0a327ff522594051d6fea

SHA512
c3fbd633a59674ea46175290cf8a8e676c2854af510c1978be88a747a2b2ac1a8f3a9599bffa50f80edf2d636bf9d01384fbbb99cd971c511acc755f2f820cb7

Download Submit
memory/1380-20-0x000001C9E28B0000-0x000001C9E28D2000-memory.dmp

Filesize
136KB

Download
memory/2136-65-0x0000028A56F50000-0x0000028A5716C000-memory.dmp

Filesize
2.1MB

Download
memory/2832-17-0x00007FF811810000-0x00007FF8122D1000-memory.dmp

Filesize
10.8MB

Download
memory/2832-15-0x0000000000640000-0x0000000000656000-memory.dmp

Filesize
88KB

Download
memory/2832-70-0x00007FF811810000-0x00007FF8122D1000-memory.dmp

Filesize
10.8MB

Download
memory/3288-0-0x00007FF811813000-0x00007FF811815000-memory.dmp

Filesize
8KB

Download
memory/3288-1-0x0000000000C00000-0x0000000000C1A000-memory.dmp

Filesize
104KB

Download

Resubmissions

Analysis

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