8d6f3c6ba6daa46ca65a19d91ac95fb0929aeed94954fc9cc99e4abecc256904

Analysis

max time kernel
160s
max time network
163s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04/01/2024, 14:16

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General

Target

4115123d26089f2ce09fffb8aa7e45ed.exe
Size

93KB
MD5

4115123d26089f2ce09fffb8aa7e45ed
SHA1

ff430b58bf30a551e088fcf23670643449adcc5d
SHA256

8d6f3c6ba6daa46ca65a19d91ac95fb0929aeed94954fc9cc99e4abecc256904
SHA512

07c435c4270b7f4266d832bacec231a1b15dc104502e28c175622e8a5a5538142d04240d53280d97d8c26c2a8ee912455aceac42c9f7e5cf44220bc0a0b4f446
SSDEEP

1536:SKcR4mjD9r823FIKNqlkQ8z2iVBrSKSwe8xwwkZs3IXEP:SKcWmjRrz3m2qz0lXkZs3ic

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2184	Ua4IafxT0msL34x.exe
4680	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/2656-0-0x0000000000F00000-0x0000000000F17000-memory.dmp	upx
behavioral2/memory/2656-1-0x0000000000F00000-0x0000000000F17000-memory.dmp	upx
behavioral2/files/0x000200000001e7e0-7.dat	upx
behavioral2/memory/4680-8-0x0000000000C50000-0x0000000000C67000-memory.dmp	upx
behavioral2/memory/2656-10-0x0000000000F00000-0x0000000000F17000-memory.dmp	upx
behavioral2/files/0x0007000000022556-14.dat	upx
behavioral2/memory/4680-26-0x0000000000C50000-0x0000000000C67000-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"	4115123d26089f2ce09fffb8aa7e45ed.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	4115123d26089f2ce09fffb8aa7e45ed.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2656	4115123d26089f2ce09fffb8aa7e45ed.exe
Token: SeDebugPrivilege	4680	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2656 wrote to memory of 2184	2656	4115123d26089f2ce09fffb8aa7e45ed.exe	91
PID 2656 wrote to memory of 2184	2656	4115123d26089f2ce09fffb8aa7e45ed.exe	91
PID 2656 wrote to memory of 2184	2656	4115123d26089f2ce09fffb8aa7e45ed.exe	91
PID 2656 wrote to memory of 4680	2656	4115123d26089f2ce09fffb8aa7e45ed.exe	92
PID 2656 wrote to memory of 4680	2656	4115123d26089f2ce09fffb8aa7e45ed.exe	92
PID 2656 wrote to memory of 4680	2656	4115123d26089f2ce09fffb8aa7e45ed.exe	92

C:\Users\Admin\AppData\Local\Temp\4115123d26089f2ce09fffb8aa7e45ed.exe
"C:\Users\Admin\AppData\Local\Temp\4115123d26089f2ce09fffb8aa7e45ed.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2656
- C:\Users\Admin\AppData\Local\Temp\Ua4IafxT0msL34x.exe
  C:\Users\Admin\AppData\Local\Temp\Ua4IafxT0msL34x.exe
  2⤵
  - Executes dropped EXE
  PID:2184
- 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:4680

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
352KB

MD5
8a67804a955fb33ccc98aa764a792606

SHA1
464f93f26764b8d4bc1376b34c364eb33db8c5c9

SHA256
c3da4df4b58f3a8bb80b720c9f7a0a5a00dc9591424da05d1eb027660469b9d2

SHA512
ff686b0c57c3b571dd22e22c8064a115d1c3f05b8de509bca2abb2cbb745dd3b4c0d5d4d3eda44a41b51677e7a1bd3a12e476c09355bc622860f532b0ef39cc0

Download Submit
C:\Users\Admin\AppData\Local\Temp\Ua4IafxT0msL34x.exe

Filesize
64KB

MD5
a32a382b8a5a906e03a83b4f3e5b7a9b

SHA1
11e2bdd0798761f93cce363329996af6c17ed796

SHA256
75f12ea2f30d9c0d872dade345f30f562e6d93847b6a509ba53beec6d0b2c346

SHA512
ec87dd957be21b135212454646dcabdd7ef9442cf714e2c1f6b42b81f0c3fa3b1875bde9a8b538e8a0aa2190225649c29e9ed0f25176e7659e55e422dd4efe4c

Download Submit
C:\Windows\CTS.exe

Filesize
29KB

MD5
70aa23c9229741a9b52e5ce388a883ac

SHA1
b42683e21e13de3f71db26635954d992ebe7119e

SHA256
9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

SHA512
be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

Download Submit
memory/2656-0-0x0000000000F00000-0x0000000000F17000-memory.dmp

Filesize
92KB

Download
memory/2656-1-0x0000000000F00000-0x0000000000F17000-memory.dmp

Filesize
92KB

Download
memory/2656-10-0x0000000000F00000-0x0000000000F17000-memory.dmp

Filesize
92KB

Download
memory/4680-8-0x0000000000C50000-0x0000000000C67000-memory.dmp

Filesize
92KB

Download
memory/4680-26-0x0000000000C50000-0x0000000000C67000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads