xworm | 1b72e6203b4d26cbe44b55e7df27b3477badd3270cf900bb13c2af47bed80516

Resubmissions

05/03/2025, 07:17

250305-h4vr3sstav 10

05/03/2025, 07:14

250305-h248qssmx7 10

Analysis

max time kernel
138s
max time network
290s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
05/03/2025, 07:17

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General

Target

pictures and specifications.exe
Size

177KB
MD5

ce901f91244366477cd0b769d92f9034
SHA1

6f49860e768725f78bf3855d18efe329b3553355
SHA256

1b72e6203b4d26cbe44b55e7df27b3477badd3270cf900bb13c2af47bed80516
SHA512

2f94fbd0d733db31c5ad56be18ee53ec6a531a7d7f5bc08f59c1c7f3dd0f5827b9e4dd586b084ac031fd06599510332d21ebbb7515a1441332d1fc11b143bdfb
SSDEEP

3072:5rsawEN2scoJ7FWN3WfHC5kan0r0i4tyAyptWKye6vx2PvLn3:5H7FLf4kan0rBP

Score

10^/10

xworm discovery rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

Mutex

56TvElZMbqDoRvU7

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/536-1349-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm

Suspicious use of NtCreateUserProcessOtherParentProcess 2 IoCs

description	pid	Process	procid_target
PID 4580 created 3440	4580	pictures and specifications.exe	56
PID 672 created 3440	672	ocbvbt.exe	56

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

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-1-5-21-925314154-1797147466-1467878628-1000\Control Panel\International\Geo\Nation	pictures and specifications.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IsPrimitive.vbs	pictures and specifications.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IsPrimitive.vbs	ocbvbt.exe

Executes dropped EXE 2 IoCs

pid	Process
672	ocbvbt.exe
4948	ocbvbt.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4580 set thread context of 536	4580	pictures and specifications.exe	95
PID 672 set thread context of 4948	672	ocbvbt.exe	99

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pictures and specifications.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pictures and specifications.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ocbvbt.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
4580	pictures and specifications.exe
4580	pictures and specifications.exe
4580	pictures and specifications.exe
672	ocbvbt.exe
672	ocbvbt.exe
672	ocbvbt.exe
4948	ocbvbt.exe
4948	ocbvbt.exe
4948	ocbvbt.exe
4948	ocbvbt.exe
4948	ocbvbt.exe
4948	ocbvbt.exe
4948	ocbvbt.exe
4948	ocbvbt.exe
4948	ocbvbt.exe
4948	ocbvbt.exe
4948	ocbvbt.exe
4948	ocbvbt.exe
4948	ocbvbt.exe
4948	ocbvbt.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	4580	pictures and specifications.exe
Token: SeDebugPrivilege	4580	pictures and specifications.exe
Token: SeDebugPrivilege	536	pictures and specifications.exe
Token: SeDebugPrivilege	672	ocbvbt.exe
Token: SeDebugPrivilege	672	ocbvbt.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 4580 wrote to memory of 536	4580	pictures and specifications.exe	95
PID 4580 wrote to memory of 536	4580	pictures and specifications.exe	95
PID 4580 wrote to memory of 536	4580	pictures and specifications.exe	95
PID 4580 wrote to memory of 536	4580	pictures and specifications.exe	95
PID 4580 wrote to memory of 536	4580	pictures and specifications.exe	95
PID 4580 wrote to memory of 536	4580	pictures and specifications.exe	95
PID 4580 wrote to memory of 536	4580	pictures and specifications.exe	95
PID 4580 wrote to memory of 536	4580	pictures and specifications.exe	95
PID 536 wrote to memory of 672	536	pictures and specifications.exe	97
PID 536 wrote to memory of 672	536	pictures and specifications.exe	97
PID 536 wrote to memory of 672	536	pictures and specifications.exe	97
PID 672 wrote to memory of 4948	672	ocbvbt.exe	99
PID 672 wrote to memory of 4948	672	ocbvbt.exe	99
PID 672 wrote to memory of 4948	672	ocbvbt.exe	99
PID 672 wrote to memory of 4948	672	ocbvbt.exe	99
PID 672 wrote to memory of 4948	672	ocbvbt.exe	99
PID 672 wrote to memory of 4948	672	ocbvbt.exe	99

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3440
- C:\Users\Admin\AppData\Local\Temp\pictures and specifications.exe
  "C:\Users\Admin\AppData\Local\Temp\pictures and specifications.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Drops startup file
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4580
- C:\Users\Admin\AppData\Local\Temp\pictures and specifications.exe
  "C:\Users\Admin\AppData\Local\Temp\pictures and specifications.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:536
- - C:\Users\Admin\AppData\Local\Temp\ocbvbt.exe
    "C:\Users\Admin\AppData\Local\Temp\ocbvbt.exe"
    3⤵
    - Suspicious use of NtCreateUserProcessOtherParentProcess
    - Drops startup file
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:672
- C:\Users\Admin\AppData\Local\Temp\ocbvbt.exe
  "C:\Users\Admin\AppData\Local\Temp\ocbvbt.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:4948

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\ocbvbt.exe

Filesize
177KB

MD5
2a92df410ae147573fb1ffa5e1431251

SHA1
2d49c7eb4fb33484a320c2b8ce63cebc3e8222b1

SHA256
f39606c32ff9914d13d32a9b69b2142a09491f9e421e1d53cddb7d1f82fef4e3

SHA512
5abb6222118a9611955b365dfa722f1156713db8d344cf47dfffbf4a66eac7e83fbcb9548970185dfaece8c22f3b3833c5369a755845b6ad3bf7ee7aaf1c6d17

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IsPrimitive.vbs

Filesize
86B

MD5
6c762d94ee2fdac893f6223f532d73d5

SHA1
8f7aa36c5215433d12e9bab97a393f7767b9258e

SHA256
bc13fe6ffecd43e59d593e6e33adf9a2d32fb667c19c7c9680a8b7e6ec3fec3a

SHA512
679f857976501def1222e3ff9dce3f52054d7f6368562802919401e8bd23ebe35a96b17949c7f788a75d285356b7770363ef20ddbd62baa6015ea09647269f8c

Download Submit
\??\c:\users\admin\appdata\roaming\isprimitive.exe

Filesize
128KB

MD5
c278371f813a64c690cd277c663a6f1d

SHA1
cfdd2eccffbb24468cea2a60a80608e9136ba68d

SHA256
5a829a83f4743fc835b06ccf02c166be0a9f8c651018919cf838290b1ac469bc

SHA512
ab43d1b3d8d314092b4ad7022dfc6d3288032c72df854c36daeb26d4eea7143865579df7ed34f1be5db175ab547d667bb7b5f75262af7c7e44dd067874bff985

Download Submit
memory/536-1349-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/536-1348-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/536-1350-0x00000000050F0000-0x000000000518C000-memory.dmp

Filesize
624KB

Download
memory/536-1351-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/536-1352-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/536-1353-0x0000000005800000-0x0000000005866000-memory.dmp

Filesize
408KB

Download
memory/536-1354-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/672-2693-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/672-1366-0x0000000000680000-0x00000000006B2000-memory.dmp

Filesize
200KB

Download
memory/672-1367-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/672-1368-0x0000000005780000-0x00000000058C2000-memory.dmp

Filesize
1.3MB

Download
memory/672-2691-0x0000000005A60000-0x0000000005AFC000-memory.dmp

Filesize
624KB

Download
memory/672-2692-0x0000000005B90000-0x0000000005C28000-memory.dmp

Filesize
608KB

Download
memory/672-2704-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/4580-51-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-1331-0x0000000006600000-0x000000000664C000-memory.dmp

Filesize
304KB

Download
memory/4580-45-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-41-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-39-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-37-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-35-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-33-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-49-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-43-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-31-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-29-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-27-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-23-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-19-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-17-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-15-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-13-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-11-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-9-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-7-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-25-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-1328-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/4580-1329-0x00000000062E0000-0x000000000633C000-memory.dmp

Filesize
368KB

Download
memory/4580-1330-0x0000000006350000-0x00000000063A8000-memory.dmp

Filesize
352KB

Download
memory/4580-47-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-1332-0x0000000074F1E000-0x0000000074F1F000-memory.dmp

Filesize
4KB

Download
memory/4580-1333-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/4580-1334-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/4580-1335-0x0000000006650000-0x00000000066A4000-memory.dmp

Filesize
336KB

Download
memory/4580-1341-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/4580-1343-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/4580-1344-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/4580-0-0x0000000074F1E000-0x0000000074F1F000-memory.dmp

Filesize
4KB

Download
memory/4580-1347-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/4580-53-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-1346-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/4580-55-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-57-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-59-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-61-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-63-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-67-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-69-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-65-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-21-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-6-0x0000000006020000-0x000000000611B000-memory.dmp

Filesize
1004KB

Download
memory/4580-5-0x0000000006240000-0x00000000062D2000-memory.dmp

Filesize
584KB

Download
memory/4580-4-0x00000000066F0000-0x0000000006C94000-memory.dmp

Filesize
5.6MB

Download
memory/4580-3-0x0000000006020000-0x0000000006120000-memory.dmp

Filesize
1024KB

Download
memory/4580-2-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/4580-1-0x0000000000E00000-0x0000000000E32000-memory.dmp

Filesize
200KB

Download