15d2f35f57ac49761ecbeacff526bca044cf90d4ac64cdfcc4907e2ccfb69a66

Analysis

max time kernel
163s
max time network
181s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
31/12/2023, 13:31

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General

Target

381e20e0aa57b975f06e729ee8283441.exe
Size

59KB
MD5

381e20e0aa57b975f06e729ee8283441
SHA1

a6dc3104b190757b9108030f9dc278393e7c81fa
SHA256

15d2f35f57ac49761ecbeacff526bca044cf90d4ac64cdfcc4907e2ccfb69a66
SHA512

c429c3c64a260bef9f0c37500232b5b105788436b3489a256a7a38224e71da47c2c0dae5ac6f947b3e5c448e8708ad672153e76ca05dc7ea48b472f27675aae3
SSDEEP

768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEFGocAX3LKew369lp2z3K:SKcR4mjD9r823FHKcR4mjD9r823FP

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4168	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 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3576-0-0x00000000003E0000-0x00000000003F7000-memory.dmp	upx
behavioral2/memory/3576-3-0x00000000003E0000-0x00000000003F7000-memory.dmp	upx
behavioral2/files/0x000200000001e7e2-7.dat	upx
behavioral2/memory/4168-8-0x0000000000E70000-0x0000000000E87000-memory.dmp	upx
behavioral2/memory/3576-10-0x00000000003E0000-0x00000000003F7000-memory.dmp	upx
behavioral2/files/0x0007000000022556-13.dat	upx
behavioral2/memory/4168-17-0x0000000000E70000-0x0000000000E87000-memory.dmp	upx
behavioral2/files/0x000800000001e0ce-33.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"	381e20e0aa57b975f06e729ee8283441.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	381e20e0aa57b975f06e729ee8283441.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3576	381e20e0aa57b975f06e729ee8283441.exe
Token: SeDebugPrivilege	4168	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3576 wrote to memory of 4168	3576	381e20e0aa57b975f06e729ee8283441.exe	91
PID 3576 wrote to memory of 4168	3576	381e20e0aa57b975f06e729ee8283441.exe	91
PID 3576 wrote to memory of 4168	3576	381e20e0aa57b975f06e729ee8283441.exe	91

C:\Users\Admin\AppData\Local\Temp\381e20e0aa57b975f06e729ee8283441.exe
"C:\Users\Admin\AppData\Local\Temp\381e20e0aa57b975f06e729ee8283441.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3576
- 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:4168

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
382KB

MD5
2cce3c462c7da0663f5bf9c6b5f1860b

SHA1
75ea33ef381c895f40e718e9326be04f4444f69e

SHA256
6fa7bf3590c049c2394d9e3720466a5a910bdbab1ed6c4a2e851ecaf5aa01a5c

SHA512
4a725317c9f9a89b4c47c8fb1d1acce0d3821984c47f8235bc1531fe70756856d36d87b6461f6ee746ce9ee56e9fcd901c29d5ff9e02dbe9dda913ea80228cff

Download Submit
C:\Users\Admin\AppData\Local\Temp\LniwV6iZsg8YqWy.exe

Filesize
59KB

MD5
e1c30edab6d31454fb41c72e68768e4e

SHA1
54c9bd46bb60bcd6ed50180960e321dda1908d39

SHA256
48e5d708386f9cfe0a535041b2613f6b341c9a905e04e645a5741d0b4b84a04a

SHA512
09bdad6f23593bfae8fff3ee3d468b1567aa015854ab22956e23a8edcbcd2bb92d2ebbb105f2fa9f7edb0f5e076ee71049a52ae16bbc0f65ab50ce55a610987b

Download Submit
C:\Windows\CTS.exe

Filesize
59KB

MD5
5efd390d5f95c8191f5ac33c4db4b143

SHA1
42d81b118815361daa3007f1a40f1576e9a9e0bc

SHA256
6028434636f349d801465f77af3a1e387a9c5032942ca6cadb6506d0800f2a74

SHA512
720fbe253483dc034307a57a2860c8629a760f883603198d1213f5290b7f236bf0f5f237728ebed50962be83dc7dc4abe61a1e9a55218778495fc6580eb20b3d

Download Submit
memory/3576-0-0x00000000003E0000-0x00000000003F7000-memory.dmp

Filesize
92KB

Download
memory/3576-3-0x00000000003E0000-0x00000000003F7000-memory.dmp

Filesize
92KB

Download
memory/3576-10-0x00000000003E0000-0x00000000003F7000-memory.dmp

Filesize
92KB

Download
memory/4168-8-0x0000000000E70000-0x0000000000E87000-memory.dmp

Filesize
92KB

Download
memory/4168-17-0x0000000000E70000-0x0000000000E87000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads