3af1544252bedc67aeabb577ab53659589f68ed47b800e896893b8fdfef6dccd

Analysis

max time kernel
143s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30/12/2023, 02:13

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General

Target

0b4313f2fbc9cc2d9a942e6bfc1a6622.exe
Size

75KB
MD5

0b4313f2fbc9cc2d9a942e6bfc1a6622
SHA1

b81b0ab3f237e515b22050d2a0aafe44ef2d4dd4
SHA256

3af1544252bedc67aeabb577ab53659589f68ed47b800e896893b8fdfef6dccd
SHA512

b7da1f66c806ef8ef8cd42cecd7167f766f5a12737dc1f6e89f5ec51ac9a22f94f5132716b472d4a12e3b997108b7fdcd2cbe88f95204f868eeb6678d3177d3d
SSDEEP

1536:SKcR4mjD9r823FHKcR4mjD9r823Fcl/D/qu7IjNcQd:SKcWmjRrz3ZKcWmjRrz36/DzIjuQd

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1240	aWwmxhh1YG2zuii.exe
2988	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/4912-0-0x0000000000AF0000-0x0000000000B07000-memory.dmp	upx
behavioral2/files/0x00070000000231fa-6.dat	upx
behavioral2/memory/4912-7-0x0000000000AF0000-0x0000000000B07000-memory.dmp	upx
behavioral2/memory/2988-8-0x0000000000470000-0x0000000000487000-memory.dmp	upx
behavioral2/files/0x000400000001e6ff-13.dat	upx
behavioral2/memory/2988-19-0x0000000000470000-0x0000000000487000-memory.dmp	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"	0b4313f2fbc9cc2d9a942e6bfc1a6622.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	0b4313f2fbc9cc2d9a942e6bfc1a6622.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4912	0b4313f2fbc9cc2d9a942e6bfc1a6622.exe
Token: SeDebugPrivilege	2988	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4912 wrote to memory of 1240	4912	0b4313f2fbc9cc2d9a942e6bfc1a6622.exe	90
PID 4912 wrote to memory of 1240	4912	0b4313f2fbc9cc2d9a942e6bfc1a6622.exe	90
PID 4912 wrote to memory of 2988	4912	0b4313f2fbc9cc2d9a942e6bfc1a6622.exe	92
PID 4912 wrote to memory of 2988	4912	0b4313f2fbc9cc2d9a942e6bfc1a6622.exe	92
PID 4912 wrote to memory of 2988	4912	0b4313f2fbc9cc2d9a942e6bfc1a6622.exe	92

C:\Users\Admin\AppData\Local\Temp\0b4313f2fbc9cc2d9a942e6bfc1a6622.exe
"C:\Users\Admin\AppData\Local\Temp\0b4313f2fbc9cc2d9a942e6bfc1a6622.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4912
- C:\Users\Admin\AppData\Local\Temp\aWwmxhh1YG2zuii.exe
  C:\Users\Admin\AppData\Local\Temp\aWwmxhh1YG2zuii.exe
  2⤵
  - Executes dropped EXE
  PID:1240
- 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:2988

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
382KB

MD5
23c519940c8c6a635d4c613a0b63e7fe

SHA1
7ea2f594928e8da3af1f21a60e49472f5913b342

SHA256
9cc8779a9007d7e1e471699f48ed6185a90f3a516128ff4799f758adf21a207d

SHA512
a5d2adfb15bb4a00851cd39941249a9928960c32fdbaa9f3e16745d8a4a79c4c55eb4e72affd129478acfeaf8305d220790ad44f48877bb260f0623d02118eb2

Download Submit
C:\Users\Admin\AppData\Local\Temp\aWwmxhh1YG2zuii.exe

Filesize
16KB

MD5
95c9a037d3b01a21275aa6cc73b122a2

SHA1
c19ed8afc95b91d0cc6bc075047de30eae015386

SHA256
1d5edcbae3258efb07cc57ba8d7cd1ebe2eb5106ef1a894b787ed2857952c523

SHA512
761bb76261712a597f610e3162fa1514d2f56d69d03d1b76b51c6b2a7b0c88bbd385b7dc849c6913f7d861fb3aed8551f26f640d90b621e8629abe2e4bfb6160

Download Submit
C:\Windows\CTS.exe

Filesize
59KB

MD5
5efd390d5f95c8191f5ac33c4db4b143

SHA1
42d81b118815361daa3007f1a40f1576e9a9e0bc

SHA256
6028434636f349d801465f77af3a1e387a9c5032942ca6cadb6506d0800f2a74

SHA512
720fbe253483dc034307a57a2860c8629a760f883603198d1213f5290b7f236bf0f5f237728ebed50962be83dc7dc4abe61a1e9a55218778495fc6580eb20b3d

Download Submit
memory/2988-8-0x0000000000470000-0x0000000000487000-memory.dmp

Filesize
92KB

Download
memory/2988-19-0x0000000000470000-0x0000000000487000-memory.dmp

Filesize
92KB

Download
memory/4912-0-0x0000000000AF0000-0x0000000000B07000-memory.dmp

Filesize
92KB

Download
memory/4912-7-0x0000000000AF0000-0x0000000000B07000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads