b8142f884604f1bc9fcb4e57c73852e68104d237cf86870077c0f67ab98c16a7

Analysis

max time kernel
144s
max time network
82s
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 07:09

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General

Target

11c74b911510fb248c406f77542db7e8.exe
Size

59KB
MD5

11c74b911510fb248c406f77542db7e8
SHA1

1ea2f82d672e8e39f3662946b2cca0cbbbd06a08
SHA256

b8142f884604f1bc9fcb4e57c73852e68104d237cf86870077c0f67ab98c16a7
SHA512

9fa0f68c2a3254401bf6f7dbba54d0bfa72da21accbbdf17182594494f7b985ce213d202a67ef796327dbdb820901ec1d675474b9cf6553ef621f3b6ebd7db02
SSDEEP

768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEFGocAX3LKew369lp2z3Q:SKcR4mjD9r823FHKcR4mjD9r823Ff

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2308	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/2848-0-0x0000000000740000-0x0000000000757000-memory.dmp	upx
behavioral2/memory/2308-9-0x0000000000F30000-0x0000000000F47000-memory.dmp	upx
behavioral2/files/0x00060000000231b6-8.dat	upx
behavioral2/memory/2848-7-0x0000000000740000-0x0000000000757000-memory.dmp	upx
behavioral2/files/0x000300000001e713-12.dat	upx
behavioral2/files/0x00060000000231b5-29.dat	upx
behavioral2/memory/2308-31-0x0000000000F30000-0x0000000000F47000-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"	11c74b911510fb248c406f77542db7e8.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	11c74b911510fb248c406f77542db7e8.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2848	11c74b911510fb248c406f77542db7e8.exe
Token: SeDebugPrivilege	2308	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2848 wrote to memory of 2308	2848	11c74b911510fb248c406f77542db7e8.exe	31
PID 2848 wrote to memory of 2308	2848	11c74b911510fb248c406f77542db7e8.exe	31
PID 2848 wrote to memory of 2308	2848	11c74b911510fb248c406f77542db7e8.exe	31

C:\Users\Admin\AppData\Local\Temp\11c74b911510fb248c406f77542db7e8.exe
"C:\Users\Admin\AppData\Local\Temp\11c74b911510fb248c406f77542db7e8.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2848
- 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:2308

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
355KB

MD5
a009eb2b51161af665cbafd5c2ffbd1a

SHA1
28c099c9ab2047f89230ce0a0f29a76c0b314dad

SHA256
4ab91279b13387956656b1f9d7162af5737d2273fbfeab55b15c4326b81e73bf

SHA512
1ce8c59aa08cbeeb3e8af1f7f3798d58709fd887f420a69aad4a915630d55489c4ad36568944b162e90206ababe29de4de8b40ef8f5d13b7cb142fd3ac602b96

Download Submit
C:\Users\Admin\AppData\Local\Temp\S8YvFZdr7QT43tj.exe

Filesize
59KB

MD5
374ec77f3b0fd3c1879d75aa0efc9996

SHA1
a514a2699b15ed63ca972e8a3b64c526e650b371

SHA256
9c2d7112412dfef40fc1534bc918a9e2a1e47418d1490978d57c4dd78fc5f5af

SHA512
8b674f7519f8eaaf12d4a7b486d8a74ce07657cbb369e53346613827ef1e81ca06fac7afb304a3efa5a11774484363710db824a5fde083df507a2d65460f6dee

Download Submit
C:\Windows\CTS.exe

Filesize
59KB

MD5
5efd390d5f95c8191f5ac33c4db4b143

SHA1
42d81b118815361daa3007f1a40f1576e9a9e0bc

SHA256
6028434636f349d801465f77af3a1e387a9c5032942ca6cadb6506d0800f2a74

SHA512
720fbe253483dc034307a57a2860c8629a760f883603198d1213f5290b7f236bf0f5f237728ebed50962be83dc7dc4abe61a1e9a55218778495fc6580eb20b3d

Download Submit
memory/2308-9-0x0000000000F30000-0x0000000000F47000-memory.dmp

Filesize
92KB

Download
memory/2308-31-0x0000000000F30000-0x0000000000F47000-memory.dmp

Filesize
92KB

Download
memory/2848-0-0x0000000000740000-0x0000000000757000-memory.dmp

Filesize
92KB

Download
memory/2848-7-0x0000000000740000-0x0000000000757000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads