4644b7b0a4b3f77c3dd4424710893d8edf31190a84fbe1fb8975b79e991edfc0

Analysis

max time kernel
141s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30/12/2023, 08:21

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General

Target

134b7415d74437221fe3d271d09a5278.exe
Size

71KB
MD5

134b7415d74437221fe3d271d09a5278
SHA1

f37904493690e49e3ea5d76a9af2ee38367c03eb
SHA256

4644b7b0a4b3f77c3dd4424710893d8edf31190a84fbe1fb8975b79e991edfc0
SHA512

f30da29cea3fb709bf5b0565ef79f4bd41786a77deaf27fda772eaf9704d2765c644d4865a64b166db97238862042de9d92f63d09a8841b557bf7e803761c260
SSDEEP

1536:s9Z3KcR4mjD9r8226+v9Z3KcR4mjD9r8226+W:sr3KcWmjRrzSvr3KcWmjRrzSW

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1528	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/2800-0-0x00000000009B0000-0x00000000009C7000-memory.dmp	upx
behavioral2/files/0x00090000000231fb-6.dat	upx
behavioral2/memory/1528-7-0x0000000000730000-0x0000000000747000-memory.dmp	upx
behavioral2/memory/2800-8-0x00000000009B0000-0x00000000009C7000-memory.dmp	upx
behavioral2/files/0x000300000002276d-12.dat	upx
behavioral2/files/0x000200000001fafe-29.dat	upx
behavioral2/memory/1528-32-0x0000000000730000-0x0000000000747000-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"	134b7415d74437221fe3d271d09a5278.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	134b7415d74437221fe3d271d09a5278.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2800	134b7415d74437221fe3d271d09a5278.exe
Token: SeDebugPrivilege	1528	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2800 wrote to memory of 1528	2800	134b7415d74437221fe3d271d09a5278.exe	91
PID 2800 wrote to memory of 1528	2800	134b7415d74437221fe3d271d09a5278.exe	91
PID 2800 wrote to memory of 1528	2800	134b7415d74437221fe3d271d09a5278.exe	91

C:\Users\Admin\AppData\Local\Temp\134b7415d74437221fe3d271d09a5278.exe
"C:\Users\Admin\AppData\Local\Temp\134b7415d74437221fe3d271d09a5278.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2800
- 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:1528

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
394KB

MD5
60b7503ec95a70dafad2325111a95745

SHA1
6c65b52b44ee8c05216ac113ad1fe7c1f14ff2ae

SHA256
9a00413bcb26adc40679b3d12451f98df804d7652478a49ffb363c69feb9cf3a

SHA512
1d1600fdbd5d42fca057758040e269b157d7d9f00f6acf96b10ab7e20ae79e3199e96a99d0fe7e59b1dc7074d733dcc95bfbc713f2cb712cce78397fb49f748b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tGLqsQ5dxn1ZTIi.exe

Filesize
71KB

MD5
ba7d89409dfba26203f360733962a7a4

SHA1
50fe1142b904a71a583e2ca2b7dae87c2563be97

SHA256
78f936912648a31bc749a83d928353092d3cd29a4a7e0ea57c24371b6945ad2f

SHA512
1ddd200b6b783d20d71ceeeda3d3185fbdfd306dc3033e629a9bd7f5e3c7c6c28cf98bda28c6d032569bc99c498cb49cd10705dfea0e05d4754792eed3fef61b

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
22069d1278ebf7d1758e20c4b118c39a

SHA1
cfd6c00953bc91dfa91a809e99a230b0ad222eec

SHA256
c4875ef691c5e0dbcdc5dd700f610042ec63e251f184150eeb3e7ab1dde3c9ba

SHA512
7ffbb4fce2779e7dc7ea19773a843eb174eb9e8dfc136a45ce8606c6c1657887f73409bfc780c391fe38dacc56c8a6ca4f84d3656236d631b42ec2946346b61d

Download Submit
memory/1528-7-0x0000000000730000-0x0000000000747000-memory.dmp

Filesize
92KB

Download
memory/1528-32-0x0000000000730000-0x0000000000747000-memory.dmp

Filesize
92KB

Download
memory/2800-0-0x00000000009B0000-0x00000000009C7000-memory.dmp

Filesize
92KB

Download
memory/2800-8-0x00000000009B0000-0x00000000009C7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads