xworm | dabc8d69b304a27576205cc1054f7ea71ba89cc2ac9026f9863829c7622ba5b3

Analysis

max time kernel
117s
max time network
143s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-12-2024 17:12

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General

Target

BQ_PO#385995.exe
Size

398KB
MD5

7e3e88fad78dff83ea421084315bfd78
SHA1

2e185874ff61f0097b34ae66cdc09bbbf1951f62
SHA256

26c434592adaffa102b1cc61983fd9355dfa4fe0e06ad3acb50732892f67d466
SHA512

432da571335f6eb1b827eceb1bf0b0cc62b2a1a7734fce3374620769487e908916a39b0e4c94ef6e764f65f3ce7066040055e52d14a7b84bb1e1650ec355460f
SSDEEP

6144:OzzpHNxvSI3xlkVxOwDWcvPRavLhOPxersLWd3JyQdETiOhhe3DU705AN8u1tdQM:INxvSec3RMY+sLSZyyETvzck05AGuvr

Score

10^/10

xworm discovery execution rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

69.174.100.131:7000

Mutex

I1KOVoZcD6Qqbmm9

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral1/memory/2528-7-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/2528-6-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/2528-9-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/2528-11-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/2528-13-0x0000000000400000-0x000000000040E000-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
2908	powershell.exe
2880	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2532 set thread context of 2528	2532	BQ_PO#385995.exe	33

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	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2908	powershell.exe
2880	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2528	AddInProcess32.exe
Token: SeDebugPrivilege	2908	powershell.exe
Token: SeDebugPrivilege	2880	powershell.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 2348	2532	BQ_PO#385995.exe	32
PID 2532 wrote to memory of 2348	2532	BQ_PO#385995.exe	32
PID 2532 wrote to memory of 2348	2532	BQ_PO#385995.exe	32
PID 2532 wrote to memory of 2348	2532	BQ_PO#385995.exe	32
PID 2532 wrote to memory of 2348	2532	BQ_PO#385995.exe	32
PID 2532 wrote to memory of 2348	2532	BQ_PO#385995.exe	32
PID 2532 wrote to memory of 2348	2532	BQ_PO#385995.exe	32
PID 2532 wrote to memory of 2528	2532	BQ_PO#385995.exe	33
PID 2532 wrote to memory of 2528	2532	BQ_PO#385995.exe	33
PID 2532 wrote to memory of 2528	2532	BQ_PO#385995.exe	33
PID 2532 wrote to memory of 2528	2532	BQ_PO#385995.exe	33
PID 2532 wrote to memory of 2528	2532	BQ_PO#385995.exe	33
PID 2532 wrote to memory of 2528	2532	BQ_PO#385995.exe	33
PID 2532 wrote to memory of 2528	2532	BQ_PO#385995.exe	33
PID 2532 wrote to memory of 2528	2532	BQ_PO#385995.exe	33
PID 2532 wrote to memory of 2528	2532	BQ_PO#385995.exe	33
PID 2532 wrote to memory of 2064	2532	BQ_PO#385995.exe	34
PID 2532 wrote to memory of 2064	2532	BQ_PO#385995.exe	34
PID 2532 wrote to memory of 2064	2532	BQ_PO#385995.exe	34
PID 2528 wrote to memory of 2908	2528	AddInProcess32.exe	35
PID 2528 wrote to memory of 2908	2528	AddInProcess32.exe	35
PID 2528 wrote to memory of 2908	2528	AddInProcess32.exe	35
PID 2528 wrote to memory of 2908	2528	AddInProcess32.exe	35
PID 2528 wrote to memory of 2880	2528	AddInProcess32.exe	37
PID 2528 wrote to memory of 2880	2528	AddInProcess32.exe	37
PID 2528 wrote to memory of 2880	2528	AddInProcess32.exe	37
PID 2528 wrote to memory of 2880	2528	AddInProcess32.exe	37

C:\Users\Admin\AppData\Local\Temp\BQ_PO#385995.exe
"C:\Users\Admin\AppData\Local\Temp\BQ_PO#385995.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
  2⤵
  PID:2348
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2528
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2908
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'AddInProcess32.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2880
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2532 -s 636
  2⤵
  PID:2064

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
e941dde9470317c63c7dc3bd5afd0fdb

SHA1
7d2ea4c5ad542636cd94517a34e9f7374b61d0a7

SHA256
2ce1a538b5a4b3de2868aecdfd759600c9415d8e414c33f845f64c4e116007cd

SHA512
f6df3fb888d9e7dc25acc8cae5022b0afb183032d97632a1082d23b05370e0a6d98db6da25f5f2a03b664f783cae3c7cc6cf9dd180b2319bf6b5fee2b85b8b28

Download Submit
memory/2528-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2528-7-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2528-9-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2528-4-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2528-11-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2528-6-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2528-5-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2528-13-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2528-25-0x0000000074120000-0x000000007480E000-memory.dmp

Filesize
6.9MB

Download
memory/2528-24-0x000000007412E000-0x000000007412F000-memory.dmp

Filesize
4KB

Download
memory/2528-22-0x0000000074120000-0x000000007480E000-memory.dmp

Filesize
6.9MB

Download
memory/2528-14-0x000000007412E000-0x000000007412F000-memory.dmp

Filesize
4KB

Download
memory/2532-1-0x0000000000220000-0x0000000000288000-memory.dmp

Filesize
416KB

Download
memory/2532-0-0x000007FEF52D3000-0x000007FEF52D4000-memory.dmp

Filesize
4KB

Download
memory/2532-23-0x000007FEF52D0000-0x000007FEF5CBC000-memory.dmp

Filesize
9.9MB

Download
memory/2532-2-0x0000000000530000-0x0000000000590000-memory.dmp

Filesize
384KB

Download
memory/2532-3-0x000007FEF52D0000-0x000007FEF5CBC000-memory.dmp

Filesize
9.9MB

Download