08e5bc6344f4e5876cb829aac4c431c062fb50e3ffd439e116738e8f11db6474

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
22/12/2023, 12:57

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General

Target

937cec6ba28d84bab591c410379e993a.exe
Size

36KB
MD5

937cec6ba28d84bab591c410379e993a
SHA1

b021453c6667b9b02326112852d2afe84952cbb7
SHA256

08e5bc6344f4e5876cb829aac4c431c062fb50e3ffd439e116738e8f11db6474
SHA512

66f77c4ab0e65daedc64b0a179bc0cee005706f65192bfb9eb164442c396c07b679414a2746a94a3ffdf4639f1c9038ee345ad75ddc13d209d4c59d1ae28bced
SSDEEP

768:X8Q2ZDX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIom46+It:s9Z3KcR4mjD9r8226+o

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1616	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/2356-0-0x00000000009B0000-0x00000000009C7000-memory.dmp	upx
behavioral2/files/0x000900000002321f-6.dat	upx
behavioral2/memory/1616-8-0x00000000008F0000-0x0000000000907000-memory.dmp	upx
behavioral2/memory/2356-7-0x00000000009B0000-0x00000000009C7000-memory.dmp	upx
behavioral2/files/0x0003000000022764-12.dat	upx
behavioral2/files/0x000300000001f45f-30.dat	upx
behavioral2/memory/1616-33-0x00000000008F0000-0x0000000000907000-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"	937cec6ba28d84bab591c410379e993a.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	937cec6ba28d84bab591c410379e993a.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2356	937cec6ba28d84bab591c410379e993a.exe
Token: SeDebugPrivilege	1616	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2356 wrote to memory of 1616	2356	937cec6ba28d84bab591c410379e993a.exe	90
PID 2356 wrote to memory of 1616	2356	937cec6ba28d84bab591c410379e993a.exe	90
PID 2356 wrote to memory of 1616	2356	937cec6ba28d84bab591c410379e993a.exe	90

C:\Users\Admin\AppData\Local\Temp\937cec6ba28d84bab591c410379e993a.exe
"C:\Users\Admin\AppData\Local\Temp\937cec6ba28d84bab591c410379e993a.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2356
- 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:1616

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
359KB

MD5
f9273f26b99df8201e72b31c25e0d08e

SHA1
0c9331dd2210158d032db6d1015f1c14e0c5f7cf

SHA256
a889d1c19eff4e06802ba412ed85b4b18c3ff6fc4b6426baf2002853bd5f6faf

SHA512
b9ec6609a397c6d5e292cf3388e173b0a962cd52b3003f6a44cabc130111dd24174695011a2c4006be8391df4db2e68deeb48627fd3a1a719a732b134f73e4dc

Download Submit
C:\Users\Admin\AppData\Local\Temp\aMilDmJXvrYYw9W.exe

Filesize
36KB

MD5
e2dc75169d3b18dc988ee4fead2b5580

SHA1
5b73900783d4ceebf1c286c4581a4d0330744159

SHA256
afd15c305541e2223a2391e94bfcb3dc5cd558c301e1d3ba1484697b631c9fad

SHA512
fa1e363f89234122167bbf4b124d9dd6861df3be450da731b4a43783675d4a9c9f72092fb5d02cfac5d06bb434dd187761b6545783b2185a71dd212aec4c1b59

Download Submit
C:\Windows\CTS.exe

Filesize
36KB

MD5
d23b958b292229b9c4449af4799e5199

SHA1
4edca4f5650a46b49f38cdc3da76df63be05d00a

SHA256
590c7a8236b0a29ae55e001361e3365bcaaeefe732d6061da12175343026e50a

SHA512
1e758b59e2b89c8313027d609949eeadc4a40ebe9c27de72bf16be4f0a5e8dafceb787d92e1324f217059bd83363368718d4bbf88841fbb50cd11d3113177c56

Download Submit
memory/1616-8-0x00000000008F0000-0x0000000000907000-memory.dmp

Filesize
92KB

Download
memory/1616-33-0x00000000008F0000-0x0000000000907000-memory.dmp

Filesize
92KB

Download
memory/2356-0-0x00000000009B0000-0x00000000009C7000-memory.dmp

Filesize
92KB

Download
memory/2356-7-0x00000000009B0000-0x00000000009C7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads