73a477f56d83bb5d473f0a360b9b2e1843b1c06987615dc396394226dc927722

Analysis

max time kernel
152s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
03/02/2024, 02:02

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General

Target

8b1a9104229be166347f96c53d81c8b9.exe
Size

483KB
MD5

8b1a9104229be166347f96c53d81c8b9
SHA1

f19e03a55a8580e006046ed6129159dfa80072c3
SHA256

73a477f56d83bb5d473f0a360b9b2e1843b1c06987615dc396394226dc927722
SHA512

136652c1b47edefab3d695702de10a0a9fa5426ae587243131e2ca1f4c478b016ffbf285e441d4ff6307a01340dd23a865f2145c1f052d7dd1134a3aee980872
SSDEEP

12288:/Q5BU3LHRFSs6o/rsao1Ogj7phS5CzrPw5IwvkkQj:/4M3rd/YmgmUrGIw8kk

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3288	Ej5J4jfrz2zWQz5.exe
3332	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 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4900-0-0x00000000005F0000-0x0000000000607000-memory.dmp	upx
behavioral2/files/0x0006000000023111-7.dat	upx
behavioral2/memory/3332-8-0x0000000000E90000-0x0000000000EA7000-memory.dmp	upx
behavioral2/memory/4900-10-0x00000000005F0000-0x0000000000607000-memory.dmp	upx
behavioral2/files/0x0007000000022556-13.dat	upx
behavioral2/memory/3332-31-0x0000000000E90000-0x0000000000EA7000-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"	8b1a9104229be166347f96c53d81c8b9.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	8b1a9104229be166347f96c53d81c8b9.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4900	8b1a9104229be166347f96c53d81c8b9.exe
Token: SeDebugPrivilege	3332	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4900 wrote to memory of 3288	4900	8b1a9104229be166347f96c53d81c8b9.exe	83
PID 4900 wrote to memory of 3288	4900	8b1a9104229be166347f96c53d81c8b9.exe	83
PID 4900 wrote to memory of 3288	4900	8b1a9104229be166347f96c53d81c8b9.exe	83
PID 4900 wrote to memory of 3332	4900	8b1a9104229be166347f96c53d81c8b9.exe	84
PID 4900 wrote to memory of 3332	4900	8b1a9104229be166347f96c53d81c8b9.exe	84
PID 4900 wrote to memory of 3332	4900	8b1a9104229be166347f96c53d81c8b9.exe	84

C:\Users\Admin\AppData\Local\Temp\8b1a9104229be166347f96c53d81c8b9.exe
"C:\Users\Admin\AppData\Local\Temp\8b1a9104229be166347f96c53d81c8b9.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4900
- C:\Users\Admin\AppData\Local\Temp\Ej5J4jfrz2zWQz5.exe
  C:\Users\Admin\AppData\Local\Temp\Ej5J4jfrz2zWQz5.exe
  2⤵
  - Executes dropped EXE
  PID:3288
- 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:3332

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
7aa3f4f6f04a5040c20e8b7778251101

SHA1
b7890d16ad08255a0c468ec37834962c95785828

SHA256
e5b944b51f877b6268da502c1c9db1dcc7a07e838673e526f7a7600caf57e02b

SHA512
c50095703ee9712948f480c0873c61deb6d6ceb1821aa495dd09f48812429e431b8848a0982e81bcce4278432b8a3e708f8978a39e1cf6ece43cad73efc1c845

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C:\Users\Admin\AppData\Local\Temp\Ej5J4jfrz2zWQz5.exe

Filesize
447KB

MD5
3f461ca3e3d9da036cf1a4a06ddf4fb4

SHA1
15395e4b656cee3a708bc50c1094e3fa0c46802e

SHA256
cd8e84c1f8d1ee3a7014343e3fb236329d2b67c1ec233ea4b208d99e3f95105b

SHA512
d0cb3f56db648c9ee151990260a864cdcd0d508a1dafcd741d8b2ccd8f73ba29607f384a4e2752502419cfd4a41d2288d7c3ffec93925be85fc39dad9c01e7f5

Download Submit
C:\Windows\CTS.exe

Filesize
35KB

MD5
93e5f18caebd8d4a2c893e40e5f38232

SHA1
fd55c4e6bcd108bce60ea719c06dc9c4d0adafa6

SHA256
a66c4b98becac2f69cb107cd087d7a2ca9ef511bc3b83367b1f440f11dd159a8

SHA512
986583610d27caae2080834301d072557c5d2c85e33f0d19ab1245d7eae8db146397461572ddb3d491be16f3af210720d54267dac838fdad8fe34afa3d6b7f54

Download Submit
memory/3332-8-0x0000000000E90000-0x0000000000EA7000-memory.dmp

Filesize
92KB

Download
memory/3332-31-0x0000000000E90000-0x0000000000EA7000-memory.dmp

Filesize
92KB

Download
memory/4900-0-0x00000000005F0000-0x0000000000607000-memory.dmp

Filesize
92KB

Download
memory/4900-10-0x00000000005F0000-0x0000000000607000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads