08e5bc6344f4e5876cb829aac4c431c062fb50e3ffd439e116738e8f11db6474

Analysis

max time kernel
140s
max time network
121s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
22/12/2023, 12:57

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General

Target

937cec6ba28d84bab591c410379e993a.exe
Size

36KB
MD5

937cec6ba28d84bab591c410379e993a
SHA1

b021453c6667b9b02326112852d2afe84952cbb7
SHA256

08e5bc6344f4e5876cb829aac4c431c062fb50e3ffd439e116738e8f11db6474
SHA512

66f77c4ab0e65daedc64b0a179bc0cee005706f65192bfb9eb164442c396c07b679414a2746a94a3ffdf4639f1c9038ee345ad75ddc13d209d4c59d1ae28bced
SSDEEP

768:X8Q2ZDX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIom46+It:s9Z3KcR4mjD9r8226+o

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2476	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 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2444-3-0x0000000000F10000-0x0000000000F27000-memory.dmp	upx
behavioral1/memory/2444-8-0x0000000000F10000-0x0000000000F27000-memory.dmp	upx
behavioral1/files/0x000b000000014313-7.dat	upx
behavioral1/memory/2476-13-0x0000000000A70000-0x0000000000A87000-memory.dmp	upx
behavioral1/files/0x000b000000014227-15.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"	937cec6ba28d84bab591c410379e993a.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	937cec6ba28d84bab591c410379e993a.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2444	937cec6ba28d84bab591c410379e993a.exe
Token: SeDebugPrivilege	2476	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2444 wrote to memory of 2476	2444	937cec6ba28d84bab591c410379e993a.exe	28
PID 2444 wrote to memory of 2476	2444	937cec6ba28d84bab591c410379e993a.exe	28
PID 2444 wrote to memory of 2476	2444	937cec6ba28d84bab591c410379e993a.exe	28
PID 2444 wrote to memory of 2476	2444	937cec6ba28d84bab591c410379e993a.exe	28

C:\Users\Admin\AppData\Local\Temp\937cec6ba28d84bab591c410379e993a.exe
"C:\Users\Admin\AppData\Local\Temp\937cec6ba28d84bab591c410379e993a.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2444
- 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:2476

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\Temp\YGb29DFESi7TKdx.exe

Filesize
36KB

MD5
9fe1e83b993c1fb4efda04dbc2eed8b0

SHA1
4495d6e838d72db0d6ec4aa476461ed63da7047e

SHA256
dfb1186cab9790b9a1574a816afc3f6a811ddc80297ecf6d155dbc39aa98992a

SHA512
4e79eeb82624ec2636abd688f081115923c92e3e7b64df0fc932526456d61f01f47dc50d1d0dfbb74c21b15008c15ce02fe873c8e9b59be1c3a853141f0da36c

Download Submit
C:\Windows\CTS.exe

Filesize
36KB

MD5
d23b958b292229b9c4449af4799e5199

SHA1
4edca4f5650a46b49f38cdc3da76df63be05d00a

SHA256
590c7a8236b0a29ae55e001361e3365bcaaeefe732d6061da12175343026e50a

SHA512
1e758b59e2b89c8313027d609949eeadc4a40ebe9c27de72bf16be4f0a5e8dafceb787d92e1324f217059bd83363368718d4bbf88841fbb50cd11d3113177c56

Download Submit
memory/2444-3-0x0000000000F10000-0x0000000000F27000-memory.dmp

Filesize
92KB

Download
memory/2444-9-0x0000000000070000-0x0000000000087000-memory.dmp

Filesize
92KB

Download
memory/2444-8-0x0000000000F10000-0x0000000000F27000-memory.dmp

Filesize
92KB

Download
memory/2444-12-0x0000000000070000-0x0000000000087000-memory.dmp

Filesize
92KB

Download
memory/2444-19-0x0000000000070000-0x0000000000087000-memory.dmp

Filesize
92KB

Download
memory/2476-13-0x0000000000A70000-0x0000000000A87000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads