4d2fc1d58c8c18a81e431d55449e4b00d0975b3ef9247691c989056e581764de

Analysis

max time kernel
147s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18-01-2024 16:30

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General

Target

657f6a8b561acbadab61a6e48f586026.exe
Size

103KB
MD5

657f6a8b561acbadab61a6e48f586026
SHA1

e968a5491c318c7fa102f5dfd36de910be83be3d
SHA256

4d2fc1d58c8c18a81e431d55449e4b00d0975b3ef9247691c989056e581764de
SHA512

2b3e03b7227a70333b0f5164f0a6aa4ff7c42aa269a672720d1c6fc75f51590f3dcbc3708e21511227b2b2b85c1e81f43c6ad15678875dedc4fe21a2fcf40d8b
SSDEEP

3072:sr3KcWmjRrzSvDunJqo3kHvZ9s2fWZkV49x7Pro:/fgJqdrs2+C49Jzo

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
4768	xMsK8pXczlMha7T.exe
4772	CTS.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3712-0-0x0000000000AF0000-0x0000000000B07000-memory.dmp	upx
behavioral2/memory/3712-6-0x0000000000AF0000-0x0000000000B07000-memory.dmp	upx
behavioral2/memory/4772-8-0x0000000000FC0000-0x0000000000FD7000-memory.dmp	upx
behavioral2/files/0x00070000000231ff-9.dat	upx
behavioral2/files/0x0003000000022707-13.dat	upx
behavioral2/memory/4772-31-0x0000000000FC0000-0x0000000000FD7000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	657f6a8b561acbadab61a6e48f586026.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	657f6a8b561acbadab61a6e48f586026.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3712	657f6a8b561acbadab61a6e48f586026.exe
Token: SeDebugPrivilege	4772	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3712 wrote to memory of 4768	3712	657f6a8b561acbadab61a6e48f586026.exe	85
PID 3712 wrote to memory of 4768	3712	657f6a8b561acbadab61a6e48f586026.exe	85
PID 3712 wrote to memory of 4768	3712	657f6a8b561acbadab61a6e48f586026.exe	85
PID 3712 wrote to memory of 4772	3712	657f6a8b561acbadab61a6e48f586026.exe	86
PID 3712 wrote to memory of 4772	3712	657f6a8b561acbadab61a6e48f586026.exe	86
PID 3712 wrote to memory of 4772	3712	657f6a8b561acbadab61a6e48f586026.exe	86

C:\Users\Admin\AppData\Local\Temp\657f6a8b561acbadab61a6e48f586026.exe
"C:\Users\Admin\AppData\Local\Temp\657f6a8b561acbadab61a6e48f586026.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3712
- C:\Users\Admin\AppData\Local\Temp\xMsK8pXczlMha7T.exe
  C:\Users\Admin\AppData\Local\Temp\xMsK8pXczlMha7T.exe
  2⤵
  - Executes dropped EXE
  PID:4768
- C:\Windows\CTS.exe
  "C:\Windows\CTS.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious use of AdjustPrivilegeToken
  PID:4772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
358KB

MD5
8524e2a21f42fd068e5946104a2745c2

SHA1
b14845186b3d34c43f856cd4a9ef4924f39d2692

SHA256
b6bbc20ff949331d31e74f4c80bd559ddd0297f3a50c6bf137161c6b51f93514

SHA512
a8752f88ea6a5d8f87947874851093e7ed62725c637c43606f3f51b12c646f04d0940b0665861d4c18ae4011e977fbee0836e6fd559052416b3bbf30cf15459e

Download Submit
C:\Users\Admin\AppData\Local\Temp\xMsK8pXczlMha7T.exe

Filesize
67KB

MD5
50e9d1438f14e3e345db6b9f15473be0

SHA1
20b511d23f4df169b10d6cd022e90b3441af038a

SHA256
6852f4faa2d0ae8be06c198c40875c9ecc466c2da9f6899b6d1f80e7df80b5e9

SHA512
65dcd5c3ee197727beef8c5bfef4073d9ed93c6662827721310dcbc0ea02c8334dbe42a47a2aee1cbe35a2943d6518c93a1d77325e58ad74cb93828b6c691ea9

Download Submit
C:\Windows\CTS.exe

Filesize
35KB

MD5
93e5f18caebd8d4a2c893e40e5f38232

SHA1
fd55c4e6bcd108bce60ea719c06dc9c4d0adafa6

SHA256
a66c4b98becac2f69cb107cd087d7a2ca9ef511bc3b83367b1f440f11dd159a8

SHA512
986583610d27caae2080834301d072557c5d2c85e33f0d19ab1245d7eae8db146397461572ddb3d491be16f3af210720d54267dac838fdad8fe34afa3d6b7f54

Download Submit
memory/3712-0-0x0000000000AF0000-0x0000000000B07000-memory.dmp

Filesize
92KB

Download
memory/3712-6-0x0000000000AF0000-0x0000000000B07000-memory.dmp

Filesize
92KB

Download
memory/4772-8-0x0000000000FC0000-0x0000000000FD7000-memory.dmp

Filesize
92KB

Download
memory/4772-31-0x0000000000FC0000-0x0000000000FD7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads