30bcefa95f5c27bc3493f765c703ade5ec9bd5f6dbe67fd498c5c69ee8a431f4

Analysis

max time kernel
141s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
01/02/2024, 16:21

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General

Target

8756ffdb0965e104d4d1e4f88f2c0c9f.exe
Size

29KB
MD5

8756ffdb0965e104d4d1e4f88f2c0c9f
SHA1

761e2a9f9d5e0748cc02d3f745b4bcb7185be651
SHA256

30bcefa95f5c27bc3493f765c703ade5ec9bd5f6dbe67fd498c5c69ee8a431f4
SHA512

dc6e0d5d3c2d687a6321657d8b7f28b4c857cd568f773a7e3622aa7118062a6d1479e5820e875bb7b57dee955445d2967453642e5e4276f7a98fee75b65209e5
SSDEEP

768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEFj:SKcR4mjD9r823Fj

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4392	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/2264-0-0x0000000000E00000-0x0000000000E17000-memory.dmp	upx
behavioral2/files/0x00080000000231cf-6.dat	upx
behavioral2/memory/2264-7-0x0000000000E00000-0x0000000000E17000-memory.dmp	upx
behavioral2/memory/4392-8-0x0000000000310000-0x0000000000327000-memory.dmp	upx
behavioral2/files/0x0006000000022765-12.dat	upx
behavioral2/files/0x00080000000231cc-30.dat	upx
behavioral2/memory/4392-32-0x0000000000310000-0x0000000000327000-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"	8756ffdb0965e104d4d1e4f88f2c0c9f.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	8756ffdb0965e104d4d1e4f88f2c0c9f.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2264	8756ffdb0965e104d4d1e4f88f2c0c9f.exe
Token: SeDebugPrivilege	4392	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2264 wrote to memory of 4392	2264	8756ffdb0965e104d4d1e4f88f2c0c9f.exe	86
PID 2264 wrote to memory of 4392	2264	8756ffdb0965e104d4d1e4f88f2c0c9f.exe	86
PID 2264 wrote to memory of 4392	2264	8756ffdb0965e104d4d1e4f88f2c0c9f.exe	86

C:\Users\Admin\AppData\Local\Temp\8756ffdb0965e104d4d1e4f88f2c0c9f.exe
"C:\Users\Admin\AppData\Local\Temp\8756ffdb0965e104d4d1e4f88f2c0c9f.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2264
- 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:4392

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
457ba0b9ebfbf383623c86e298a9e59d

SHA1
8fb930c9bd3e377cfd0007f0747d50b5e749a3ab

SHA256
766c78a202d2f4ee1c2c9a90201692d0cc75fd864451b19bbd51d76a226372be

SHA512
6a8f643c33f44efae78d4b551a8a1cc6d12a34d07a7b059f11fbc9f90ba21f0d68782cd31c4bc52d3ebbcf2a9ab77d5f523e0b7ccf4c4f980c0a9a80717ea7c1

Download Submit
C:\Users\Admin\AppData\Local\Temp\JXp1ejXosrY9Dfp.exe

Filesize
29KB

MD5
9b564bddc57341511897cc140df2003c

SHA1
a7b70d670b6298554545cf4cb34f5fbbef78da98

SHA256
f374b803ee1cb6b74806d37cf47519861bdea22a8d839e1277c800cc62247e83

SHA512
efc4b4a21a783ca3c21856e21d172e0b9f8c79fcfc3e44c8f55aae8222fc5171d6d0645c9ea236d2cf6964f443b9da1217ec1f6d8c506c12743f89fcd4c87ed8

Download Submit
C:\Windows\CTS.exe

Filesize
29KB

MD5
70aa23c9229741a9b52e5ce388a883ac

SHA1
b42683e21e13de3f71db26635954d992ebe7119e

SHA256
9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

SHA512
be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

Download Submit
memory/2264-0-0x0000000000E00000-0x0000000000E17000-memory.dmp

Filesize
92KB

Download
memory/2264-7-0x0000000000E00000-0x0000000000E17000-memory.dmp

Filesize
92KB

Download
memory/4392-8-0x0000000000310000-0x0000000000327000-memory.dmp

Filesize
92KB

Download
memory/4392-32-0x0000000000310000-0x0000000000327000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads