30dfe76f996ac5c9d72ea37590a45ff6fe44ca41756efba116fd744e99dadb35

Analysis

max time kernel
147s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
07/03/2024, 23:28

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General

Target

b9eea739f932294647908d7df42f9847.exe
Size

35KB
MD5

b9eea739f932294647908d7df42f9847
SHA1

a0fd2e55b635809eed3f8747916ec0003ce14dad
SHA256

30dfe76f996ac5c9d72ea37590a45ff6fe44ca41756efba116fd744e99dadb35
SHA512

943d81d71058a8efc4e086d694cd034f10a83711daf601f9de56c8a0bd82430bd059f91e73cd3425a5a20399c8a328bae585fbd2709251da9fa9a2d4473fbf42
SSDEEP

768:X8Q2ZDX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIom46+Iyf:s9Z3KcR4mjD9r8226+1f

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2960	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/224-0-0x0000000000F00000-0x0000000000F17000-memory.dmp	upx
behavioral2/memory/2960-7-0x0000000000B40000-0x0000000000B57000-memory.dmp	upx
behavioral2/memory/224-9-0x0000000000F00000-0x0000000000F17000-memory.dmp	upx
behavioral2/files/0x000700000002320f-8.dat	upx
behavioral2/files/0x0005000000022705-12.dat	upx
behavioral2/files/0x000700000002320d-29.dat	upx
behavioral2/memory/2960-32-0x0000000000B40000-0x0000000000B57000-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"	b9eea739f932294647908d7df42f9847.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	b9eea739f932294647908d7df42f9847.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	224	b9eea739f932294647908d7df42f9847.exe
Token: SeDebugPrivilege	2960	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 224 wrote to memory of 2960	224	b9eea739f932294647908d7df42f9847.exe	86
PID 224 wrote to memory of 2960	224	b9eea739f932294647908d7df42f9847.exe	86
PID 224 wrote to memory of 2960	224	b9eea739f932294647908d7df42f9847.exe	86

C:\Users\Admin\AppData\Local\Temp\b9eea739f932294647908d7df42f9847.exe
"C:\Users\Admin\AppData\Local\Temp\b9eea739f932294647908d7df42f9847.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:224
- 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:2960

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
358KB

MD5
3f775a586febc164e340a096d6d3efef

SHA1
917cdf5efa77b5889b0f6d59ded6cd495610063e

SHA256
96c9b36c952fd4f92c64f6594c8a1a8c4ee773fa37fb387cd5254e65ff5441c9

SHA512
79b071652ef19ec206e6be00dcf2871b5102253f801a34ffe8afc09e1477ed3832284ff18e2cc2ad6e84809dfe568deecc6713178f33c6580127d9992275fd8c

Download Submit
C:\Users\Admin\AppData\Local\Temp\A0Xl1sSSe0utSgC.exe

Filesize
35KB

MD5
e5950ce3379cda00d0453c3aca6e81d9

SHA1
6b1fd648a1a2b8efe88ca98cd1e2415e2895d42e

SHA256
6deeaa424ebb81a51376fd96475c440063753598ec536bc348e71cc6627150bf

SHA512
596deadcdf51e94b3fd76f5866f894d11f26ed8f3249e807ccce8da4a73bbff99d05a5a2b42a2de404dce9b9b39437893a0cfb3fc4d3e4a731be5f123588388a

Download Submit
C:\Windows\CTS.exe

Filesize
35KB

MD5
93e5f18caebd8d4a2c893e40e5f38232

SHA1
fd55c4e6bcd108bce60ea719c06dc9c4d0adafa6

SHA256
a66c4b98becac2f69cb107cd087d7a2ca9ef511bc3b83367b1f440f11dd159a8

SHA512
986583610d27caae2080834301d072557c5d2c85e33f0d19ab1245d7eae8db146397461572ddb3d491be16f3af210720d54267dac838fdad8fe34afa3d6b7f54

Download Submit
memory/224-0-0x0000000000F00000-0x0000000000F17000-memory.dmp

Filesize
92KB

Download
memory/224-9-0x0000000000F00000-0x0000000000F17000-memory.dmp

Filesize
92KB

Download
memory/2960-7-0x0000000000B40000-0x0000000000B57000-memory.dmp

Filesize
92KB

Download
memory/2960-32-0x0000000000B40000-0x0000000000B57000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads