f2e3357bad4efb514afbc9fbd4255a515dad8b60a8794d0791a7a4ae2d1a8731

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 14:50

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General

Target

ac25b8115c36f73e5e8817856133ae52.exe
Size

30KB
MD5

ac25b8115c36f73e5e8817856133ae52
SHA1

e20246b60c2e8d0dd309f55c79818c3ba2a532b5
SHA256

f2e3357bad4efb514afbc9fbd4255a515dad8b60a8794d0791a7a4ae2d1a8731
SHA512

2546239e85aa8bb834d55c567764c5c4a3b0d5562948665eeb9f24e76084fbf8fcddf1f7684fa883a4a3b9ef74889d9e0df65bfdf85ea7a0969a4077a67f59e8
SSDEEP

768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEFt:SKcR4mjD9r823Ft

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3640	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/4624-0-0x0000000000120000-0x0000000000137000-memory.dmp	upx
behavioral2/files/0x000800000002320b-6.dat	upx
behavioral2/memory/3640-9-0x0000000000710000-0x0000000000727000-memory.dmp	upx
behavioral2/memory/4624-7-0x0000000000120000-0x0000000000137000-memory.dmp	upx
behavioral2/files/0x000600000002275d-12.dat	upx
behavioral2/files/0x000a000000023204-29.dat	upx
behavioral2/memory/3640-31-0x0000000000710000-0x0000000000727000-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"	ac25b8115c36f73e5e8817856133ae52.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	CTS.exe
File created	C:\Windows\CTS.exe	ac25b8115c36f73e5e8817856133ae52.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4624	ac25b8115c36f73e5e8817856133ae52.exe
Token: SeDebugPrivilege	3640	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4624 wrote to memory of 3640	4624	ac25b8115c36f73e5e8817856133ae52.exe	87
PID 4624 wrote to memory of 3640	4624	ac25b8115c36f73e5e8817856133ae52.exe	87
PID 4624 wrote to memory of 3640	4624	ac25b8115c36f73e5e8817856133ae52.exe	87

C:\Users\Admin\AppData\Local\Temp\ac25b8115c36f73e5e8817856133ae52.exe
"C:\Users\Admin\AppData\Local\Temp\ac25b8115c36f73e5e8817856133ae52.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4624
- 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:3640

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
e24a79b3bb948219ca115988f6ced362

SHA1
8a5d19fb5dd51ae7e1ce99f8699aa48d3079554e

SHA256
47ae87a8e3e81e8ac5b72b3173d3a7ea5799c522c50c6cfdb0790d137b4c2307

SHA512
b02bc3d30b0e5bf609be4ad77910dd265d38a111d823231a0f86c621726ae23034997e16f3102467632d2ecfd09fcf178f8acf6b321c4765ac4ac503cf958686

Download Submit
C:\Users\Admin\AppData\Local\Temp\XylwjJxks8E46jJ.exe

Filesize
30KB

MD5
c7bfa7f2ed6b0a219db20a2e47fe2bb7

SHA1
57b93c20107148e98effa2e542a15163c8b2ec84

SHA256
1d702ae971b1e1154a80de1e4951a6ccff8e481ab3ea1916a3b50305dac58d1c

SHA512
42fecaedda835da0cbb8174b4a6c87baa78315ace6d8ec046a331553d982cd19b958e0b3a4f1a19d8aa6971b1e80b759d8cdef2eb5cc849e5db85eb15f04a142

Download Submit
C:\Windows\CTS.exe

Filesize
29KB

MD5
70aa23c9229741a9b52e5ce388a883ac

SHA1
b42683e21e13de3f71db26635954d992ebe7119e

SHA256
9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

SHA512
be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

Download Submit
memory/3640-9-0x0000000000710000-0x0000000000727000-memory.dmp

Filesize
92KB

Download
memory/3640-31-0x0000000000710000-0x0000000000727000-memory.dmp

Filesize
92KB

Download
memory/4624-0-0x0000000000120000-0x0000000000137000-memory.dmp

Filesize
92KB

Download
memory/4624-7-0x0000000000120000-0x0000000000137000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads