85274e5b50ffe230329affd50b99eb2b52c80d49772b98f9cc7a2dfea977091b

Analysis

max time kernel
141s
max time network
151s
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, 10:55

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General

Target

8c274507f1a92c56231482f8e6e0cb03.exe
Size

36KB
MD5

8c274507f1a92c56231482f8e6e0cb03
SHA1

9f186d87a0bbece1552dfb179057a5a12790efa2
SHA256

85274e5b50ffe230329affd50b99eb2b52c80d49772b98f9cc7a2dfea977091b
SHA512

e15903cc18b27aff27bc845386810b527881b2d64136afa5ce5db94eec129cf456d57bfa2d7e0671ccd40761bd4fb9433acf7d5192b411fa5f47d6cf5079385c
SSDEEP

768:X8Q2ZDX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIom46+IN3:s9Z3KcR4mjD9r8226+g

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1160	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/5172-0-0x00000000008E0000-0x00000000008F7000-memory.dmp	upx
behavioral2/files/0x0008000000023222-6.dat	upx
behavioral2/memory/1160-9-0x00000000002C0000-0x00000000002D7000-memory.dmp	upx
behavioral2/memory/5172-7-0x00000000008E0000-0x00000000008F7000-memory.dmp	upx
behavioral2/files/0x000300000002276d-12.dat	upx
behavioral2/files/0x000f00000002315a-30.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"	8c274507f1a92c56231482f8e6e0cb03.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	8c274507f1a92c56231482f8e6e0cb03.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5172	8c274507f1a92c56231482f8e6e0cb03.exe
Token: SeDebugPrivilege	1160	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5172 wrote to memory of 1160	5172	8c274507f1a92c56231482f8e6e0cb03.exe	85
PID 5172 wrote to memory of 1160	5172	8c274507f1a92c56231482f8e6e0cb03.exe	85
PID 5172 wrote to memory of 1160	5172	8c274507f1a92c56231482f8e6e0cb03.exe	85

C:\Users\Admin\AppData\Local\Temp\8c274507f1a92c56231482f8e6e0cb03.exe
"C:\Users\Admin\AppData\Local\Temp\8c274507f1a92c56231482f8e6e0cb03.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5172
- 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:1160

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
289e4ecbeb12fb9ff77d24a25b31f51b

SHA1
47094be208bacc3c27b84383ce826fdf9755c10e

SHA256
c84638e5b4801f2b241b770de4537773e76acee61bd00c8b2e3d47d568726f11

SHA512
6d098bc0152dbf06b3fa4a53fbc7a9dad3b21d500edc6cab6c2b43740135082e33ff189b88a2fc2193fa7ac26f120f195ed2ad53f872da25d4ea94ace291b50a

Download Submit
C:\Users\Admin\AppData\Local\Temp\XbCGEDju3mxhXB9.exe

Filesize
36KB

MD5
847a1e82cab7607310876b4dabbea983

SHA1
af012fab7d1fb912a4069615f86c0a917e0924fc

SHA256
e6dbfc880fdacd6b3c6922a4903fd98160b9a959ad974d897b3f3d566ccdb00c

SHA512
8e653e9a45f33836145a9bbd772072377ee6986358e9f2836484280e0d2baa1cac7c3284bfcd05a38aab6dbd840da073e2b12526dbd3fd739e1de06397596bd3

Download Submit
C:\Windows\CTS.exe

Filesize
35KB

MD5
93e5f18caebd8d4a2c893e40e5f38232

SHA1
fd55c4e6bcd108bce60ea719c06dc9c4d0adafa6

SHA256
a66c4b98becac2f69cb107cd087d7a2ca9ef511bc3b83367b1f440f11dd159a8

SHA512
986583610d27caae2080834301d072557c5d2c85e33f0d19ab1245d7eae8db146397461572ddb3d491be16f3af210720d54267dac838fdad8fe34afa3d6b7f54

Download Submit
memory/1160-9-0x00000000002C0000-0x00000000002D7000-memory.dmp

Filesize
92KB

Download
memory/5172-0-0x00000000008E0000-0x00000000008F7000-memory.dmp

Filesize
92KB

Download
memory/5172-7-0x00000000008E0000-0x00000000008F7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads