80349de34de818495a5eadf4bab5c76dadac47447060b817e3b3a94737e5fa93

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08-03-2024 02:37

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General

Target

b841b4f44614bc42302046edb5f9a865.exe
Size

36KB
MD5

b841b4f44614bc42302046edb5f9a865
SHA1

bb76a653b4bb958befc061017b5321200d25a353
SHA256

80349de34de818495a5eadf4bab5c76dadac47447060b817e3b3a94737e5fa93
SHA512

d01266b587cbb2c54360491dd88717dc4c291430c419eab28e7ddf13318c71ebcd52a720cf859b254c565016dbe394eb50586a217a230c90d5b7eaad9c2f98d0
SSDEEP

768:X8Q2ZDX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIom46+IdxS:s9Z3KcR4mjD9r8226+eI

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4744	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/3644-0-0x0000000000660000-0x0000000000677000-memory.dmp	upx
behavioral2/files/0x0011000000023134-6.dat	upx
behavioral2/memory/3644-7-0x0000000000660000-0x0000000000677000-memory.dmp	upx
behavioral2/memory/4744-9-0x00000000002B0000-0x00000000002C7000-memory.dmp	upx
behavioral2/files/0x0003000000022744-12.dat	upx
behavioral2/files/0x000700000001ebc7-30.dat	upx
behavioral2/memory/4744-35-0x00000000002B0000-0x00000000002C7000-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"	b841b4f44614bc42302046edb5f9a865.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	CTS.exe
File created	C:\Windows\CTS.exe	b841b4f44614bc42302046edb5f9a865.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3644	b841b4f44614bc42302046edb5f9a865.exe
Token: SeDebugPrivilege	4744	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3644 wrote to memory of 4744	3644	b841b4f44614bc42302046edb5f9a865.exe	88
PID 3644 wrote to memory of 4744	3644	b841b4f44614bc42302046edb5f9a865.exe	88
PID 3644 wrote to memory of 4744	3644	b841b4f44614bc42302046edb5f9a865.exe	88

C:\Users\Admin\AppData\Local\Temp\b841b4f44614bc42302046edb5f9a865.exe
"C:\Users\Admin\AppData\Local\Temp\b841b4f44614bc42302046edb5f9a865.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3644
- 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:4744

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
09b623defc30f245d66ecb8469e1860b

SHA1
0366f962502b08b246bb80dfc5e9ec6be31b3dac

SHA256
d558ccac739b75f48b099b2d97d0a0ba92fc7858e9a6e16db3bc238b468510b1

SHA512
e6e90e1b4d1161a976c28da12f41b6f09eb71fbf94d79a39124240a4c3fa60a5927415274c16cb6882182194b6a66988076dc5208a94bea4ad17c5800bc47a4c

Download Submit
C:\Users\Admin\AppData\Local\Temp\2d9RHzbPjmLYtBh.exe

Filesize
36KB

MD5
a9803bf5109c45770cf25279681b3154

SHA1
97476c078d01dd99c80d31cc81b892f634a5cbe6

SHA256
aee7ad852c567f90435d5aa7ee8d547d276fd7a5b142ccf3d22327a9edc647ee

SHA512
fe410ad05140c580df542fc68122dc369f9abdfe3b4574d0ba506a204d3cc24fee2da6fd2df3c1bcc085707baac25229f74a9b5c0f9b93decf82ae3cc50831fd

Download Submit
C:\Windows\CTS.exe

Filesize
35KB

MD5
93e5f18caebd8d4a2c893e40e5f38232

SHA1
fd55c4e6bcd108bce60ea719c06dc9c4d0adafa6

SHA256
a66c4b98becac2f69cb107cd087d7a2ca9ef511bc3b83367b1f440f11dd159a8

SHA512
986583610d27caae2080834301d072557c5d2c85e33f0d19ab1245d7eae8db146397461572ddb3d491be16f3af210720d54267dac838fdad8fe34afa3d6b7f54

Download Submit
memory/3644-0-0x0000000000660000-0x0000000000677000-memory.dmp

Filesize
92KB

Download
memory/3644-7-0x0000000000660000-0x0000000000677000-memory.dmp

Filesize
92KB

Download
memory/4744-9-0x00000000002B0000-0x00000000002C7000-memory.dmp

Filesize
92KB

Download
memory/4744-35-0x00000000002B0000-0x00000000002C7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads