0d05b8d0b82db8b0e41e0079945c9a9b7c8b353b7159f4760b3962375b06decb

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
30/12/2023, 13:38

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General

Target

1a423760a4f22b69739afa5be31f5fba.exe
Size

36KB
MD5

1a423760a4f22b69739afa5be31f5fba
SHA1

5b19bcdae6589e08fe5cca56fe5a392717b7f92b
SHA256

0d05b8d0b82db8b0e41e0079945c9a9b7c8b353b7159f4760b3962375b06decb
SHA512

630c527388e9740274b36375e307ee8724089210d2171ffc3e3d92f12467a943da37039bd68f58003bc7e05eb6a1a5cc088d6f0cd77efc1a028461547b8ce412
SSDEEP

768:X8Q2ZDX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIom46+Iy:s9Z3KcR4mjD9r8226+R

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1748	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/2008-0-0x0000000000CC0000-0x0000000000CD7000-memory.dmp	upx
behavioral2/files/0x0007000000023207-8.dat	upx
behavioral2/memory/2008-7-0x0000000000CC0000-0x0000000000CD7000-memory.dmp	upx
behavioral2/memory/1748-9-0x0000000000620000-0x0000000000637000-memory.dmp	upx
behavioral2/files/0x000600000001e68a-12.dat	upx
behavioral2/files/0x0007000000023204-29.dat	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"	1a423760a4f22b69739afa5be31f5fba.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	1a423760a4f22b69739afa5be31f5fba.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2008	1a423760a4f22b69739afa5be31f5fba.exe
Token: SeDebugPrivilege	1748	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2008 wrote to memory of 1748	2008	1a423760a4f22b69739afa5be31f5fba.exe	88
PID 2008 wrote to memory of 1748	2008	1a423760a4f22b69739afa5be31f5fba.exe	88
PID 2008 wrote to memory of 1748	2008	1a423760a4f22b69739afa5be31f5fba.exe	88

C:\Users\Admin\AppData\Local\Temp\1a423760a4f22b69739afa5be31f5fba.exe
"C:\Users\Admin\AppData\Local\Temp\1a423760a4f22b69739afa5be31f5fba.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2008
- 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:1748

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
6158d292e5800d73b06e1bf4496199d0

SHA1
25fcc48c480d4037b0aee6aa4f85bb61149ace77

SHA256
d186a893be7b8c952f217caede03f0500a35053cdbc15073e799517a264807d6

SHA512
242a824d9390cd6dc8d31b225cfc31def0016e36405ccfdbbdf306f23cf6622c1bcc1c261c272513631c01014206e224ac2cdcfeb7d4a9036c87cf50c06ccc91

Download Submit
C:\Users\Admin\AppData\Local\Temp\4FywGKsvFacCuL8.exe

Filesize
36KB

MD5
c17d01a462f563b8ad716c322488c1d3

SHA1
fd864bfb9facc854936833264cdb357b1a19218c

SHA256
498f988aa202430ce880d2c821dcf649849737214c94a7e98308b6a632e00e11

SHA512
4961108dac3750be89924333c6c40af881cecb71802f8f3ed9ed1654820f347f79b9d940e5f808b527892ddb30c8db12cee4d075c208ab77425349a22df4a9b4

Download Submit
C:\Windows\CTS.exe

Filesize
35KB

MD5
93e5f18caebd8d4a2c893e40e5f38232

SHA1
fd55c4e6bcd108bce60ea719c06dc9c4d0adafa6

SHA256
a66c4b98becac2f69cb107cd087d7a2ca9ef511bc3b83367b1f440f11dd159a8

SHA512
986583610d27caae2080834301d072557c5d2c85e33f0d19ab1245d7eae8db146397461572ddb3d491be16f3af210720d54267dac838fdad8fe34afa3d6b7f54

Download Submit
memory/1748-9-0x0000000000620000-0x0000000000637000-memory.dmp

Filesize
92KB

Download
memory/2008-0-0x0000000000CC0000-0x0000000000CD7000-memory.dmp

Filesize
92KB

Download
memory/2008-7-0x0000000000CC0000-0x0000000000CD7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads