988677a483ce7e7f394007212d53d7639e556af2c17e0039897846e898734232

Analysis

max time kernel
147s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
11/01/2024, 09:17

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General

Target

531f0e4429a5d549badb693227cd25fc.exe
Size

59KB
MD5

531f0e4429a5d549badb693227cd25fc
SHA1

8eff50a002b0a7a58439cc7942275f67805b004f
SHA256

988677a483ce7e7f394007212d53d7639e556af2c17e0039897846e898734232
SHA512

c3af364bec5f5bcc86b76c614593907667e7e07766de95788a45088492f51360f6ce51b6e0f85bcd09847ac0118a997ee426abeac463117c212eecc69a01ef91
SSDEEP

768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEFGocAX3LKew369lp2z37:SKcR4mjD9r823FHKcR4mjD9r823FkF

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1456	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/4460-0-0x0000000000CC0000-0x0000000000CD7000-memory.dmp	upx
behavioral2/files/0x000700000002304b-6.dat	upx
behavioral2/memory/1456-9-0x00000000001C0000-0x00000000001D7000-memory.dmp	upx
behavioral2/memory/4460-7-0x0000000000CC0000-0x0000000000CD7000-memory.dmp	upx
behavioral2/files/0x0003000000022764-12.dat	upx
behavioral2/files/0x000300000001f45f-30.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"	531f0e4429a5d549badb693227cd25fc.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	531f0e4429a5d549badb693227cd25fc.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4460	531f0e4429a5d549badb693227cd25fc.exe
Token: SeDebugPrivilege	1456	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4460 wrote to memory of 1456	4460	531f0e4429a5d549badb693227cd25fc.exe	89
PID 4460 wrote to memory of 1456	4460	531f0e4429a5d549badb693227cd25fc.exe	89
PID 4460 wrote to memory of 1456	4460	531f0e4429a5d549badb693227cd25fc.exe	89

C:\Users\Admin\AppData\Local\Temp\531f0e4429a5d549badb693227cd25fc.exe
"C:\Users\Admin\AppData\Local\Temp\531f0e4429a5d549badb693227cd25fc.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4460
- 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:1456

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
382KB

MD5
77b360cb67590f42876ed3afa75db5ba

SHA1
c6f9b0a072638d0e79fb324d404ac0a11a21024f

SHA256
e90c34e8d1d7859988b5aaf89683b2a1cc4449cbb7a63e01f2c394d35736af91

SHA512
1076df3bc8fa5b145c70b9bd9c2e20dd3da8674a5fe8a757bd2853bc5779277d90e52a0a469dd1f492b0e26496e8ab873a5f191fec2dd980b5aa18853b3fca8d

Download Submit
C:\Users\Admin\AppData\Local\Temp\WNr1FRhcxsFqzg4.exe

Filesize
59KB

MD5
255605acc1d5c6e32afa4a491d96a2fe

SHA1
5aa6557302ccac3b3d507b339531687a9e800b79

SHA256
8695b56fa52bd883e0c6f342f75093d58a87cc78d81474c3c7dc19b642caedc8

SHA512
4ab59b4277434d4b89649489d38d3b5b00529e3fbcb3eeef10060d64f77a25b0c6ca3ecff36fa304a11a6ae554a331bb9a56eee0e39687f16f4a61874eced557

Download Submit
C:\Windows\CTS.exe

Filesize
59KB

MD5
5efd390d5f95c8191f5ac33c4db4b143

SHA1
42d81b118815361daa3007f1a40f1576e9a9e0bc

SHA256
6028434636f349d801465f77af3a1e387a9c5032942ca6cadb6506d0800f2a74

SHA512
720fbe253483dc034307a57a2860c8629a760f883603198d1213f5290b7f236bf0f5f237728ebed50962be83dc7dc4abe61a1e9a55218778495fc6580eb20b3d

Download Submit
memory/1456-9-0x00000000001C0000-0x00000000001D7000-memory.dmp

Filesize
92KB

Download
memory/4460-0-0x0000000000CC0000-0x0000000000CD7000-memory.dmp

Filesize
92KB

Download
memory/4460-7-0x0000000000CC0000-0x0000000000CD7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads