4c1a520ec9a61451cd8bcc0130050178872b34b500e6c310a2b3708a32a8f8ef

Analysis

max time kernel
141s
max time network
130s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05-03-2024 18:53

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General

Target

b56c6c6fcbd304a93fb6f0787467f930.exe
Size

29KB
MD5

b56c6c6fcbd304a93fb6f0787467f930
SHA1

a6bd314a3c483f98f9e26f12b0ce01d42f0bad31
SHA256

4c1a520ec9a61451cd8bcc0130050178872b34b500e6c310a2b3708a32a8f8ef
SHA512

61a9bc5ccaad02c5f2c316cddae9d94776bf90d3bdef09451ca58f220263b672710dcf32f1404043f0b62b397d4686fc3f0f8906663b613c234b77e3532899bb
SSDEEP

768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEF5y:SKcR4mjD9r823F5y

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3392	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 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/396-0-0x0000000000980000-0x0000000000997000-memory.dmp	upx
behavioral2/files/0x000700000002301d-6.dat	upx
behavioral2/memory/396-7-0x0000000000980000-0x0000000000997000-memory.dmp	upx
behavioral2/memory/3392-9-0x0000000000450000-0x0000000000467000-memory.dmp	upx
behavioral2/files/0x0003000000022744-12.dat	upx
behavioral2/files/0x000700000001ebc7-30.dat	upx
behavioral2/memory/3392-34-0x0000000000450000-0x0000000000467000-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"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	b56c6c6fcbd304a93fb6f0787467f930.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	b56c6c6fcbd304a93fb6f0787467f930.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	396	b56c6c6fcbd304a93fb6f0787467f930.exe
Token: SeDebugPrivilege	3392	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 396 wrote to memory of 3392	396	b56c6c6fcbd304a93fb6f0787467f930.exe	88
PID 396 wrote to memory of 3392	396	b56c6c6fcbd304a93fb6f0787467f930.exe	88
PID 396 wrote to memory of 3392	396	b56c6c6fcbd304a93fb6f0787467f930.exe	88

C:\Users\Admin\AppData\Local\Temp\b56c6c6fcbd304a93fb6f0787467f930.exe
"C:\Users\Admin\AppData\Local\Temp\b56c6c6fcbd304a93fb6f0787467f930.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:396
- 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:3392

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
351KB

MD5
e3bdbd7c741dacaf38c8809da0e5bce0

SHA1
3644f414b362668b0c601e5d352cca02f02ae303

SHA256
95a16eb831090af63eea6145d9f6879a6c70142cac532ce596ef7470397a59e8

SHA512
ee69f8eabf378c6d3c3c3ca82febae0ad8b52b9471ea83895630780d40b051ba683aaac7cb0fa35484da425ba29ad3e641e9a2020bc515c3f6e4c6402362e1b8

Download Submit
C:\Users\Admin\AppData\Local\Temp\dL5H93YhndNqDCx.exe

Filesize
29KB

MD5
e518c3afa04816642e43dbe63e42170f

SHA1
1bddbe36764a524b4e10260c9b428bf460ab58d3

SHA256
b03b71d09dfcd0a391e15281f753de73dc1e5502bc6a098e06bfa5e87888371e

SHA512
a13baf5dc2bed8eb9095b7ed5af7b1396e92ad2056a8340b897fbae8d32f89695e4531eac796e18b65a437bae83daae1949b25b89e703a22c160bb535323ccd4

Download Submit
C:\Windows\CTS.exe

Filesize
29KB

MD5
70aa23c9229741a9b52e5ce388a883ac

SHA1
b42683e21e13de3f71db26635954d992ebe7119e

SHA256
9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

SHA512
be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

Download Submit
memory/396-0-0x0000000000980000-0x0000000000997000-memory.dmp

Filesize
92KB

Download
memory/396-7-0x0000000000980000-0x0000000000997000-memory.dmp

Filesize
92KB

Download
memory/3392-9-0x0000000000450000-0x0000000000467000-memory.dmp

Filesize
92KB

Download
memory/3392-34-0x0000000000450000-0x0000000000467000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads