chaos | b98ba4f48ad58a55a79732eea1f80838bc26dc0ab3ba0403d04a3c25df9c3d08

Analysis

max time kernel
55s
max time network
57s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06-04-2024 09:09

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General

Target

b98ba4f48ad58a55a79732eea1f80838bc26dc0ab3ba0403d04a3c25df9c3d08.exe
Size

2.3MB
MD5

8392650851d29f54e051d8a6499889a5
SHA1

d5814cff46164e3011bfce0d3bd7f6692ec63c64
SHA256

b98ba4f48ad58a55a79732eea1f80838bc26dc0ab3ba0403d04a3c25df9c3d08
SHA512

f518039b485bc675383c11b435f2b6eab2dd8d1ffac3e0aed29d972effedeb69aa039191b0986a05c275a9ccb2d65d0efc98a21db96c9cde2c54a8fa3f0f1cd8
SSDEEP

49152:4EWDvY84YWarHKnuQDuZu/RJJlB8xsDDckz8YKBg1i1IIMoq:OxkDumRJJlQuDcXMDJ

Score

10^/10

chaos xworm zgrat persistence ransomware rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

gamemodz.duckdns.org:4678

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2564-4909-0x00000000074F0000-0x000000000750C000-memory.dmp	family_chaos

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2564-4895-0x0000000000400000-0x0000000000418000-memory.dmp	family_xworm

Detect ZGRat V1 34 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3596-2-0x0000000006120000-0x0000000006346000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-5-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-6-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-8-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-10-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-12-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-14-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-16-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-18-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-20-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-24-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-22-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-26-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-28-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-30-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-32-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-36-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-38-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-34-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-40-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-42-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-44-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-46-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-48-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-50-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-52-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-54-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-56-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-58-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-60-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-62-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-64-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-68-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1
behavioral1/memory/3596-66-0x0000000006120000-0x000000000633F000-memory.dmp	family_zgrat_v1

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

Drops startup file 2 IoCs

Processes:

cvtres.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cvtres.lnk	cvtres.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cvtres.lnk	cvtres.exe

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

1340 svchost.exe

pid	process
1340	svchost.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

cvtres.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cvtres = "C:\\Users\\Admin\\AppData\\Roaming\\cvtres.exe"	cvtres.exe

Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

26 ip-api.com

flow	ioc
26	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

Processes:

b98ba4f48ad58a55a79732eea1f80838bc26dc0ab3ba0403d04a3c25df9c3d08.exe

description	pid	process	target process
PID 3596 set thread context of 2564	3596	b98ba4f48ad58a55a79732eea1f80838bc26dc0ab3ba0403d04a3c25df9c3d08.exe	cvtres.exe

Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

4896 schtasks.exe

pid	process
4896	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

cvtres.exe

pid	process
2564	cvtres.exe
2564	cvtres.exe
2564	cvtres.exe
2564	cvtres.exe
2564	cvtres.exe
2564	cvtres.exe
2564	cvtres.exe
2564	cvtres.exe
2564	cvtres.exe
2564	cvtres.exe
2564	cvtres.exe
2564	cvtres.exe
2564	cvtres.exe
2564	cvtres.exe
2564	cvtres.exe
2564	cvtres.exe
2564	cvtres.exe
2564	cvtres.exe
2564	cvtres.exe
2564	cvtres.exe
2564	cvtres.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

b98ba4f48ad58a55a79732eea1f80838bc26dc0ab3ba0403d04a3c25df9c3d08.execvtres.exe

description	pid	process
Token: SeDebugPrivilege	3596	b98ba4f48ad58a55a79732eea1f80838bc26dc0ab3ba0403d04a3c25df9c3d08.exe
Token: SeDebugPrivilege	3596	b98ba4f48ad58a55a79732eea1f80838bc26dc0ab3ba0403d04a3c25df9c3d08.exe
Token: SeDebugPrivilege	2564	cvtres.exe
Token: SeDebugPrivilege	2564	cvtres.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

b98ba4f48ad58a55a79732eea1f80838bc26dc0ab3ba0403d04a3c25df9c3d08.execvtres.exe

description	pid	process	target process
PID 3596 wrote to memory of 2564	3596	b98ba4f48ad58a55a79732eea1f80838bc26dc0ab3ba0403d04a3c25df9c3d08.exe	cvtres.exe
PID 3596 wrote to memory of 2564	3596	b98ba4f48ad58a55a79732eea1f80838bc26dc0ab3ba0403d04a3c25df9c3d08.exe	cvtres.exe
PID 3596 wrote to memory of 2564	3596	b98ba4f48ad58a55a79732eea1f80838bc26dc0ab3ba0403d04a3c25df9c3d08.exe	cvtres.exe
PID 3596 wrote to memory of 2564	3596	b98ba4f48ad58a55a79732eea1f80838bc26dc0ab3ba0403d04a3c25df9c3d08.exe	cvtres.exe
PID 3596 wrote to memory of 2564	3596	b98ba4f48ad58a55a79732eea1f80838bc26dc0ab3ba0403d04a3c25df9c3d08.exe	cvtres.exe
PID 3596 wrote to memory of 2564	3596	b98ba4f48ad58a55a79732eea1f80838bc26dc0ab3ba0403d04a3c25df9c3d08.exe	cvtres.exe
PID 3596 wrote to memory of 2564	3596	b98ba4f48ad58a55a79732eea1f80838bc26dc0ab3ba0403d04a3c25df9c3d08.exe	cvtres.exe
PID 3596 wrote to memory of 2564	3596	b98ba4f48ad58a55a79732eea1f80838bc26dc0ab3ba0403d04a3c25df9c3d08.exe	cvtres.exe
PID 2564 wrote to memory of 4896	2564	cvtres.exe	schtasks.exe
PID 2564 wrote to memory of 4896	2564	cvtres.exe	schtasks.exe
PID 2564 wrote to memory of 4896	2564	cvtres.exe	schtasks.exe
PID 2564 wrote to memory of 1340	2564	cvtres.exe	svchost.exe
PID 2564 wrote to memory of 1340	2564	cvtres.exe	svchost.exe
PID 2564 wrote to memory of 1340	2564	cvtres.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\b98ba4f48ad58a55a79732eea1f80838bc26dc0ab3ba0403d04a3c25df9c3d08.exe
"C:\Users\Admin\AppData\Local\Temp\b98ba4f48ad58a55a79732eea1f80838bc26dc0ab3ba0403d04a3c25df9c3d08.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3596
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2564
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "cvtres" /tr "C:\Users\Admin\AppData\Roaming\cvtres.exe"
    3⤵
    - Creates scheduled task(s)
    PID:4896
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Executes dropped EXE
    PID:1340

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\cvtres.exe

Filesize
45KB

MD5
70d838a7dc5b359c3f938a71fad77db0

SHA1
66b83eb16481c334719eed406bc58a3c2b910923

SHA256
e4dbdbf7888ea96f3f8aa5c4c7f2bcf6e57d724dd8194fe5f35b673c6ef724ea

SHA512
9c9a945db5b5e7ff8105bfe74578e6f00b5f707f7c3d8f1f1fb41553a6d0eab29cef026e77877a1ad6435fa7bc369141921442e1485f2b0894c6bbcbd7791034

Download Submit
memory/2564-4894-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/2564-4895-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2564-4896-0x00000000055E0000-0x000000000567C000-memory.dmp

Filesize
624KB

Download
memory/2564-4897-0x0000000005680000-0x00000000056E6000-memory.dmp

Filesize
408KB

Download
memory/2564-4898-0x00000000055D0000-0x00000000055E0000-memory.dmp

Filesize
64KB

Download
memory/2564-4909-0x00000000074F0000-0x000000000750C000-memory.dmp

Filesize
112KB

Download
memory/2564-4908-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/2564-4907-0x0000000007390000-0x000000000739A000-memory.dmp

Filesize
40KB

Download
memory/3596-38-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-48-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-6-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-8-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-10-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-12-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-14-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-16-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-18-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-20-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-24-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-22-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-26-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-28-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-30-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-32-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-36-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-4-0x00000000063E0000-0x0000000006472000-memory.dmp

Filesize
584KB

Download
memory/3596-34-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-40-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-42-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-44-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-46-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-5-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-50-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-52-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-54-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-56-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-58-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-60-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-62-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-64-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-68-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-66-0x0000000006120000-0x000000000633F000-memory.dmp

Filesize
2.1MB

Download
memory/3596-3769-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/3596-4887-0x00000000063B0000-0x00000000063B1000-memory.dmp

Filesize
4KB

Download
memory/3596-3-0x00000000068F0000-0x0000000006E94000-memory.dmp

Filesize
5.6MB

Download
memory/3596-2-0x0000000006120000-0x0000000006346000-memory.dmp

Filesize
2.1MB

Download
memory/3596-1-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/3596-0-0x00000000002D0000-0x000000000051A000-memory.dmp

Filesize
2.3MB

Download
memory/3596-4886-0x0000000004FE0000-0x0000000004FF0000-memory.dmp

Filesize
64KB

Download
memory/3596-4888-0x0000000006690000-0x00000000066F2000-memory.dmp

Filesize
392KB

Download
memory/3596-4889-0x0000000006630000-0x000000000667C000-memory.dmp

Filesize
304KB

Download
memory/3596-4890-0x0000000006830000-0x0000000006884000-memory.dmp

Filesize
336KB

Download
memory/3596-4893-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download