a406b3a2ef6709e23aa0c124935dac8c089d980f17d8b1fd83e4f4e9ccab7950

Analysis

max time kernel
141s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25/01/2024, 20:27

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General

Target

75706464b91635ce44a02c121de61c3d.exe
Size

46KB
MD5

75706464b91635ce44a02c121de61c3d
SHA1

23d5fdfe8f0ccbcbc37654b5677ae12d409bfd5e
SHA256

a406b3a2ef6709e23aa0c124935dac8c089d980f17d8b1fd83e4f4e9ccab7950
SHA512

891397de1d697f2f4aa6f04de330b07f1e8ef836040d6b707ad9d6a6954db4b9163ba59dc559b2312ecb9becafe84f89768662d0ba8dfa3d2717057e98467e0c
SSDEEP

768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEFjFPEmpoCl0ziyHcDq2L:SKcR4mjD9r823FemKCmiy8Dq2gZhs

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3428	xYZO9Hmb2EMiKCK.exe
4812	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 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1660-0-0x0000000000590000-0x00000000005A7000-memory.dmp	upx
behavioral2/files/0x0007000000023205-6.dat	upx
behavioral2/memory/1660-7-0x0000000000590000-0x00000000005A7000-memory.dmp	upx
behavioral2/memory/4812-9-0x0000000000560000-0x0000000000577000-memory.dmp	upx
behavioral2/files/0x000a00000002304d-13.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"	75706464b91635ce44a02c121de61c3d.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	75706464b91635ce44a02c121de61c3d.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1660	75706464b91635ce44a02c121de61c3d.exe
Token: SeDebugPrivilege	4812	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1660 wrote to memory of 3428	1660	75706464b91635ce44a02c121de61c3d.exe	86
PID 1660 wrote to memory of 3428	1660	75706464b91635ce44a02c121de61c3d.exe	86
PID 1660 wrote to memory of 4812	1660	75706464b91635ce44a02c121de61c3d.exe	88
PID 1660 wrote to memory of 4812	1660	75706464b91635ce44a02c121de61c3d.exe	88
PID 1660 wrote to memory of 4812	1660	75706464b91635ce44a02c121de61c3d.exe	88

C:\Users\Admin\AppData\Local\Temp\75706464b91635ce44a02c121de61c3d.exe
"C:\Users\Admin\AppData\Local\Temp\75706464b91635ce44a02c121de61c3d.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1660
- C:\Users\Admin\AppData\Local\Temp\xYZO9Hmb2EMiKCK.exe
  C:\Users\Admin\AppData\Local\Temp\xYZO9Hmb2EMiKCK.exe
  2⤵
  - Executes dropped EXE
  PID:3428
- 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:4812

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
352KB

MD5
2fa3999ac1b0154e2fd68a12721b5172

SHA1
a907c170efd1dff8efa7e1394b35b75b686f9680

SHA256
285bdf3971521310abd38e4c7ae75802ff94c3da7137f3ee02c24a6623c8641d

SHA512
c2f5ac490d146d39130a1e0a3802d28fd58ec2aadb8badcbed464d7cf444c11acc559bfc2629ec2528ce04cfe05071957fb635fd7be8e5b8d4bb7d8ee0338400

Download Submit
C:\Users\Admin\AppData\Local\Temp\xYZO9Hmb2EMiKCK.exe

Filesize
16KB

MD5
95c9a037d3b01a21275aa6cc73b122a2

SHA1
c19ed8afc95b91d0cc6bc075047de30eae015386

SHA256
1d5edcbae3258efb07cc57ba8d7cd1ebe2eb5106ef1a894b787ed2857952c523

SHA512
761bb76261712a597f610e3162fa1514d2f56d69d03d1b76b51c6b2a7b0c88bbd385b7dc849c6913f7d861fb3aed8551f26f640d90b621e8629abe2e4bfb6160

Download Submit
C:\Windows\CTS.exe

Filesize
29KB

MD5
70aa23c9229741a9b52e5ce388a883ac

SHA1
b42683e21e13de3f71db26635954d992ebe7119e

SHA256
9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

SHA512
be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

Download Submit
memory/1660-0-0x0000000000590000-0x00000000005A7000-memory.dmp

Filesize
92KB

Download
memory/1660-7-0x0000000000590000-0x00000000005A7000-memory.dmp

Filesize
92KB

Download
memory/4812-9-0x0000000000560000-0x0000000000577000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads