4644b7b0a4b3f77c3dd4424710893d8edf31190a84fbe1fb8975b79e991edfc0

Analysis

max time kernel
141s
max time network
135s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
30/12/2023, 08:21

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General

Target

134b7415d74437221fe3d271d09a5278.exe
Size

71KB
MD5

134b7415d74437221fe3d271d09a5278
SHA1

f37904493690e49e3ea5d76a9af2ee38367c03eb
SHA256

4644b7b0a4b3f77c3dd4424710893d8edf31190a84fbe1fb8975b79e991edfc0
SHA512

f30da29cea3fb709bf5b0565ef79f4bd41786a77deaf27fda772eaf9704d2765c644d4865a64b166db97238862042de9d92f63d09a8841b557bf7e803761c260
SSDEEP

1536:s9Z3KcR4mjD9r8226+v9Z3KcR4mjD9r8226+W:sr3KcWmjRrzSvr3KcWmjRrzSW

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2244	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
behavioral1/memory/1640-0-0x0000000000F70000-0x0000000000F87000-memory.dmp	upx
behavioral1/memory/1640-5-0x00000000000E0000-0x00000000000F7000-memory.dmp	upx
behavioral1/memory/1640-9-0x0000000000F70000-0x0000000000F87000-memory.dmp	upx
behavioral1/memory/2244-12-0x00000000009F0000-0x0000000000A07000-memory.dmp	upx
behavioral1/files/0x000800000001227a-11.dat	upx
behavioral1/files/0x000c00000001225f-14.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"	134b7415d74437221fe3d271d09a5278.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	134b7415d74437221fe3d271d09a5278.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1640	134b7415d74437221fe3d271d09a5278.exe
Token: SeDebugPrivilege	2244	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1640 wrote to memory of 2244	1640	134b7415d74437221fe3d271d09a5278.exe	28
PID 1640 wrote to memory of 2244	1640	134b7415d74437221fe3d271d09a5278.exe	28
PID 1640 wrote to memory of 2244	1640	134b7415d74437221fe3d271d09a5278.exe	28
PID 1640 wrote to memory of 2244	1640	134b7415d74437221fe3d271d09a5278.exe	28

C:\Users\Admin\AppData\Local\Temp\134b7415d74437221fe3d271d09a5278.exe
"C:\Users\Admin\AppData\Local\Temp\134b7415d74437221fe3d271d09a5278.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1640
- 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:2244

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\oMeFSX43SgZsfqH.exe

Filesize
71KB

MD5
b26240738fbb88d4b4ef4cd7d7b3e885

SHA1
8bf76a3dcea2c21dac3f0246ae08a2d6152113b5

SHA256
3e6b163905f3aa5c72c2a5a44efd6c4cae38e0962fc6158c40ef1970d3a77c7a

SHA512
21ef43a336e3d60def711a3bcfac07c4f4cbc1f433700f906a38f27108ad88cd1a22b440a0fcdc09d60c67d35b1c14d08b4c65d71d3715fef9d31480187ace27

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
22069d1278ebf7d1758e20c4b118c39a

SHA1
cfd6c00953bc91dfa91a809e99a230b0ad222eec

SHA256
c4875ef691c5e0dbcdc5dd700f610042ec63e251f184150eeb3e7ab1dde3c9ba

SHA512
7ffbb4fce2779e7dc7ea19773a843eb174eb9e8dfc136a45ce8606c6c1657887f73409bfc780c391fe38dacc56c8a6ca4f84d3656236d631b42ec2946346b61d

Download Submit
memory/1640-0-0x0000000000F70000-0x0000000000F87000-memory.dmp

Filesize
92KB

Download
memory/1640-5-0x00000000000E0000-0x00000000000F7000-memory.dmp

Filesize
92KB

Download
memory/1640-9-0x0000000000F70000-0x0000000000F87000-memory.dmp

Filesize
92KB

Download
memory/2244-12-0x00000000009F0000-0x0000000000A07000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads