fa49f95682f85aaa071784a6371cefcee766b1798e2c3fa251f390b7e6722e52

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30/12/2023, 08:25

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General

Target

135b0186558c2bf30e87c63f058b4b5f.exe
Size

30KB
MD5

135b0186558c2bf30e87c63f058b4b5f
SHA1

ca890f844cd490ed6fea2714e22dce14a345975d
SHA256

fa49f95682f85aaa071784a6371cefcee766b1798e2c3fa251f390b7e6722e52
SHA512

198e1ffd1884f478c19537a6c518a43bba89bb71e06d1d67e97de8f7c49b04907622e1f1fd604f0dda221318bbb987aff54c72f895e289d99b8d56b42aad29d6
SSDEEP

768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEF4:SKcR4mjD9r823F4

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2896	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/3724-0-0x0000000000650000-0x0000000000667000-memory.dmp	upx
behavioral2/files/0x00070000000231f9-6.dat	upx
behavioral2/memory/2896-9-0x00000000001E0000-0x00000000001F7000-memory.dmp	upx
behavioral2/memory/3724-7-0x0000000000650000-0x0000000000667000-memory.dmp	upx
behavioral2/files/0x00020000000227a5-12.dat	upx
behavioral2/files/0x00070000000231f6-29.dat	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"	135b0186558c2bf30e87c63f058b4b5f.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	135b0186558c2bf30e87c63f058b4b5f.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3724	135b0186558c2bf30e87c63f058b4b5f.exe
Token: SeDebugPrivilege	2896	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3724 wrote to memory of 2896	3724	135b0186558c2bf30e87c63f058b4b5f.exe	87
PID 3724 wrote to memory of 2896	3724	135b0186558c2bf30e87c63f058b4b5f.exe	87
PID 3724 wrote to memory of 2896	3724	135b0186558c2bf30e87c63f058b4b5f.exe	87

C:\Users\Admin\AppData\Local\Temp\135b0186558c2bf30e87c63f058b4b5f.exe
"C:\Users\Admin\AppData\Local\Temp\135b0186558c2bf30e87c63f058b4b5f.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3724
- 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:2896

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
352KB

MD5
9b856ccab91d0f3c9100ba97bd026cb5

SHA1
13cf2eb447457d356d8a23c776fcb8ac9610facc

SHA256
d4b4d0b9d72c4bf61fb7e75d8b90c479fc0adf18564e881b8fd87cd5d9fc62a5

SHA512
8a704c006138a69a3003fb27bb9921a8d7dcb0396ae5b860e9a701c938c5e4f4ea6773d48194fe798d4f5329ccc26a7d3a15bd81465f11ee0ee23d445de9302c

Download Submit
C:\Users\Admin\AppData\Local\Temp\wvAhvWYDUOxH4M4.exe

Filesize
30KB

MD5
40f1dadc1bb69b0ce135950b392221c0

SHA1
943889de39aeb29f3c568575c138d5b756751267

SHA256
c55ebe911f85c0938d8187c83c3fbad32e2c4388145e0923ba6e7ee7d9efa567

SHA512
3db15811ddeb3276710695f2ceb8507cd6fc0b528950a36d6f95dbfa166df0a3ae9effc03769e587eb8e9f798df7d0bc9e31a24e042b1e12481dd9fe798c09d4

Download Submit
C:\Windows\CTS.exe

Filesize
29KB

MD5
70aa23c9229741a9b52e5ce388a883ac

SHA1
b42683e21e13de3f71db26635954d992ebe7119e

SHA256
9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

SHA512
be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

Download Submit
memory/2896-9-0x00000000001E0000-0x00000000001F7000-memory.dmp

Filesize
92KB

Download
memory/3724-0-0x0000000000650000-0x0000000000667000-memory.dmp

Filesize
92KB

Download
memory/3724-7-0x0000000000650000-0x0000000000667000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads