33649fb760f20bc5993fa63edc3115cfb480a27c8a7fe517b88df6a45aa3cbd0

Analysis

max time kernel
151s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
29-12-2023 21:49

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General

Target

04d53af001da12475ae9d13054778ffb.exe
Size

74KB
MD5

04d53af001da12475ae9d13054778ffb
SHA1

df0883af36c37c4f478f71f017fb6dc75974a53f
SHA256

33649fb760f20bc5993fa63edc3115cfb480a27c8a7fe517b88df6a45aa3cbd0
SHA512

9d82d88b570c86e53960123c23af2933e886218ebd0ca0f7cd9b885b659f1a636bf856e86b69993c182f1f894f71201b44c1657f6acb19beb61828fd4d8e2165
SSDEEP

1536:s9Z3KcR4mjD9r8226+p9Z3KcR4mjD9r8226+ABEP:sr3KcWmjRrzSpr3KcWmjRrzSkO

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4688	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/2288-0-0x0000000000FC0000-0x0000000000FD7000-memory.dmp	upx
behavioral2/memory/2288-7-0x0000000000FC0000-0x0000000000FD7000-memory.dmp	upx
behavioral2/memory/4688-9-0x0000000000710000-0x0000000000727000-memory.dmp	upx
behavioral2/files/0x0007000000023243-8.dat	upx
behavioral2/files/0x0005000000022705-12.dat	upx
behavioral2/memory/4688-23-0x0000000000710000-0x0000000000727000-memory.dmp	upx
behavioral2/files/0x000400000001e716-30.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"	04d53af001da12475ae9d13054778ffb.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	04d53af001da12475ae9d13054778ffb.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2288	04d53af001da12475ae9d13054778ffb.exe
Token: SeDebugPrivilege	4688	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2288 wrote to memory of 4688	2288	04d53af001da12475ae9d13054778ffb.exe	87
PID 2288 wrote to memory of 4688	2288	04d53af001da12475ae9d13054778ffb.exe	87
PID 2288 wrote to memory of 4688	2288	04d53af001da12475ae9d13054778ffb.exe	87

C:\Users\Admin\AppData\Local\Temp\04d53af001da12475ae9d13054778ffb.exe
"C:\Users\Admin\AppData\Local\Temp\04d53af001da12475ae9d13054778ffb.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2288
- 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:4688

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
394KB

MD5
795042a01314fb64120bc557d7f87c94

SHA1
aaf4f22fe5ba611219aa764d8034a986cd7b2237

SHA256
69f94536e5ffe3e341324089ae373304f3c47c81e445c04c53180ce9f89e3182

SHA512
21e9ca4fb29ae998e67478c05abe0aa4cc4477865902477d96a8aebd346b81fdf6de5e3ce4a3897b534f21584c270cf3ebd262a93dbf27875bd3f02ae19a3b45

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

Filesize
74KB

MD5
398a6394fba10537aa1bc252ed4c2e73

SHA1
e9630c45e6e2b489f538de2bf8506b41fb679c96

SHA256
8f9b4deb14a06ef662218715ad21188168b14ab93bd88727980b53da2437b189

SHA512
5c6e69e39c45749eacdfbdff870f8521d483413da8ecb4942bd813828c0044bc813ae4f4b113615c75dffa8e648f17ae69d58ccd4a84f17be61686889fd19513

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
c0ff8a1444606fa3a0248c00d217f900

SHA1
8d5bfa8d786e0a9e4297bd93f59fa78d9ffc6fa3

SHA256
b81861fee582c55b0b239a9a6ab7fd583fc6d5f9ef9069b97bc0c53dad0d7c89

SHA512
03f39a146408ea82aea100299a15b0a1f5f9dff5919fe22300c81da4fd75aa3dedaaaadb616ba43e1729439be15dae32934ed3996cc8f5ad6154290280fe001a

Download Submit
memory/2288-0-0x0000000000FC0000-0x0000000000FD7000-memory.dmp

Filesize
92KB

Download
memory/2288-7-0x0000000000FC0000-0x0000000000FD7000-memory.dmp

Filesize
92KB

Download
memory/4688-9-0x0000000000710000-0x0000000000727000-memory.dmp

Filesize
92KB

Download
memory/4688-23-0x0000000000710000-0x0000000000727000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads