39813573816a5a6c8cdf4abad8d18d7d852b905f0271b3d7fbc67c04a20e2359

Analysis

max time kernel
141s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
07/03/2024, 14:26

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General

Target

b8f344433c52c889eb6c015ab43edf19.exe
Size

71KB
MD5

b8f344433c52c889eb6c015ab43edf19
SHA1

4354c5982917e3cd540e33019594c3e1bf646057
SHA256

39813573816a5a6c8cdf4abad8d18d7d852b905f0271b3d7fbc67c04a20e2359
SHA512

54522d06b3b2a2c4be113a825a76de12e131d5a98f8b1f670d287809f64ac6a9ee5496c7484ac87912f0b67ff0953aef6fa696ab683a6cc73d77327052003544
SSDEEP

1536:s9Z3KcR4mjD9r8226+v9Z3KcR4mjD9r8226+3:sr3KcWmjRrzSvr3KcWmjRrzS3

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1940	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
behavioral1/memory/2164-0-0x0000000000FE0000-0x0000000000FF7000-memory.dmp	upx
behavioral1/memory/2164-5-0x0000000000350000-0x0000000000367000-memory.dmp	upx
behavioral1/memory/2164-9-0x0000000000FE0000-0x0000000000FF7000-memory.dmp	upx
behavioral1/files/0x000d0000000122a3-11.dat	upx
behavioral1/files/0x000c00000001223a-13.dat	upx
behavioral1/memory/1940-15-0x0000000000350000-0x0000000000367000-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"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	b8f344433c52c889eb6c015ab43edf19.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	b8f344433c52c889eb6c015ab43edf19.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2164	b8f344433c52c889eb6c015ab43edf19.exe
Token: SeDebugPrivilege	1940	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2164 wrote to memory of 1940	2164	b8f344433c52c889eb6c015ab43edf19.exe	28
PID 2164 wrote to memory of 1940	2164	b8f344433c52c889eb6c015ab43edf19.exe	28
PID 2164 wrote to memory of 1940	2164	b8f344433c52c889eb6c015ab43edf19.exe	28
PID 2164 wrote to memory of 1940	2164	b8f344433c52c889eb6c015ab43edf19.exe	28

C:\Users\Admin\AppData\Local\Temp\b8f344433c52c889eb6c015ab43edf19.exe
"C:\Users\Admin\AppData\Local\Temp\b8f344433c52c889eb6c015ab43edf19.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2164
- 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:1940

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\Temp\vrd3pZhJWHQMttf.exe

Filesize
71KB

MD5
10e9715dd50f420a5c933dad927daa3a

SHA1
9e78f6d1c14700e31494eb8958f8fe5794dc8714

SHA256
4cfd0b042b92a7b93882c7294d42a00cbb57bb90ae843fd55ffd9b5b342964a2

SHA512
e4c450ba1077be2fde6be49069bc820911b520c8fe21d90059c4d25fd0aa27eefb454f5fa274992ff1323a79d0d25592250fe92e60244ce5230fbb4d79a17a21

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
22069d1278ebf7d1758e20c4b118c39a

SHA1
cfd6c00953bc91dfa91a809e99a230b0ad222eec

SHA256
c4875ef691c5e0dbcdc5dd700f610042ec63e251f184150eeb3e7ab1dde3c9ba

SHA512
7ffbb4fce2779e7dc7ea19773a843eb174eb9e8dfc136a45ce8606c6c1657887f73409bfc780c391fe38dacc56c8a6ca4f84d3656236d631b42ec2946346b61d

Download Submit
memory/1940-15-0x0000000000350000-0x0000000000367000-memory.dmp

Filesize
92KB

Download
memory/2164-0-0x0000000000FE0000-0x0000000000FF7000-memory.dmp

Filesize
92KB

Download
memory/2164-5-0x0000000000350000-0x0000000000367000-memory.dmp

Filesize
92KB

Download
memory/2164-9-0x0000000000FE0000-0x0000000000FF7000-memory.dmp

Filesize
92KB

Download

Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads