05c602cf7bd2e8b19f40b891e08e16bfceb99fd3db3b6bb59506c2b366891ff2

Analysis

max time kernel
148s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
07/01/2024, 23:52

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General

Target

4a1a9518eccb04ac641890743df25d72.exe
Size

32KB
MD5

4a1a9518eccb04ac641890743df25d72
SHA1

88081b5fcd981aa581c2bb36229478582eabffd7
SHA256

05c602cf7bd2e8b19f40b891e08e16bfceb99fd3db3b6bb59506c2b366891ff2
SHA512

8ca7cf06d237f2510ba2d98385a884c5059ba26f6312f156b43235f2726bf622061619e7654e63b3a44a4f428235de0acedfc59f5bd596d78229cc7bacfa634a
SSDEEP

768:XkX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIoHq:6KcR4mjD9r827

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4956	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 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1248-0-0x0000000000310000-0x0000000000327000-memory.dmp	upx
behavioral2/memory/1248-1-0x0000000000310000-0x0000000000327000-memory.dmp	upx
behavioral2/memory/1248-6-0x0000000000310000-0x0000000000327000-memory.dmp	upx
behavioral2/memory/4956-9-0x00000000003E0000-0x00000000003F7000-memory.dmp	upx
behavioral2/files/0x000200000001e7e1-10.dat	upx
behavioral2/memory/1248-11-0x0000000000310000-0x0000000000327000-memory.dmp	upx
behavioral2/files/0x00020000000227c9-15.dat	upx
behavioral2/memory/4956-32-0x00000000003E0000-0x00000000003F7000-memory.dmp	upx
behavioral2/files/0x000200000001e7dd-33.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"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	4a1a9518eccb04ac641890743df25d72.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	4a1a9518eccb04ac641890743df25d72.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1248	4a1a9518eccb04ac641890743df25d72.exe
Token: SeDebugPrivilege	4956	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1248 wrote to memory of 4956	1248	4a1a9518eccb04ac641890743df25d72.exe	92
PID 1248 wrote to memory of 4956	1248	4a1a9518eccb04ac641890743df25d72.exe	92
PID 1248 wrote to memory of 4956	1248	4a1a9518eccb04ac641890743df25d72.exe	92

C:\Users\Admin\AppData\Local\Temp\4a1a9518eccb04ac641890743df25d72.exe
"C:\Users\Admin\AppData\Local\Temp\4a1a9518eccb04ac641890743df25d72.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1248
- 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:4956

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
355KB

MD5
4689606c7f5befde2b71a0a2e82ade9f

SHA1
9008e1f5c7e519cba7fbe65d6d14fd3bc3b76765

SHA256
49a92c355bfac077ecd9caebabd44edde0ce07672d687b9957da755477467ecd

SHA512
4102dc6c73e1c2ca9c92c2a93174ab9f50735f1bcb7e65db57770ecdfab32047e8326c935a0d57f10e632cbf30481599177253696e8a8201df0804ac4afa7908

Download Submit
C:\Users\Admin\AppData\Local\Temp\0eIjEDzkZW87Uy3.exe

Filesize
32KB

MD5
a5c65e1d641964a986703b3c445ec061

SHA1
253325fef15f01cc9756428c8d0ede065fa02ed6

SHA256
4708b91c880138b706ca3900d6ae61f1df8ed9d6fc0bcb0fe74eab58ea2a2eff

SHA512
6cdbb7381c37567753aa39fa4228a73b3dcaa89255cc827d05259cc19d53e2b67141b94f49ff3552c8abd2d4265cfe0687a053721fedeb716db53f87c0e0a633

Download Submit
C:\Windows\CTS.exe

Filesize
32KB

MD5
70c2b7b30042b4ef55eb264151a77fe7

SHA1
d07aeeaa1a0fe8bb5d4f0bcd6832189716e1749a

SHA256
fc44d7a036bb45e7299b6ed991cb7f83ea56130975b35f623719f16b06876120

SHA512
5146de549de6af31299c716958d86c52657d138e95b05634745b1d80d992f3c265c4f97a771148a3aa2538029e4d704f47f484c15b1b3fc1def7bb06e07cfa71

Download Submit
memory/1248-0-0x0000000000310000-0x0000000000327000-memory.dmp

Filesize
92KB

Download
memory/1248-1-0x0000000000310000-0x0000000000327000-memory.dmp

Filesize
92KB

Download
memory/1248-6-0x0000000000310000-0x0000000000327000-memory.dmp

Filesize
92KB

Download
memory/1248-11-0x0000000000310000-0x0000000000327000-memory.dmp

Filesize
92KB

Download
memory/4956-9-0x00000000003E0000-0x00000000003F7000-memory.dmp

Filesize
92KB

Download
memory/4956-32-0x00000000003E0000-0x00000000003F7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads