b3c02856b12d3a7aa48e4a53879f34290ec282da57cd81fff62825c86ff8e11a

Analysis

max time kernel
144s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04/01/2024, 05:26

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General

Target

4002a100f2d5c79432818ddf0bbc2c5d.exe
Size

46KB
MD5

4002a100f2d5c79432818ddf0bbc2c5d
SHA1

64a3e2c5343cd9c5a6067a79e6997edcd4851c68
SHA256

b3c02856b12d3a7aa48e4a53879f34290ec282da57cd81fff62825c86ff8e11a
SHA512

4c99e8a570a4ae782b43d50b7bbd46dd0e911b429dee60025ffc43353c05c84a7fffad947aa80c1928b2173bf0e502c4eac0cfd9be6a9cff34ef9d54b00f4a16
SSDEEP

768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEFlzdNskHBloawqrY+0FZ:SKcR4mjD9r823FlJfloajuu+5BZ

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1848	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/1688-0-0x0000000000210000-0x0000000000227000-memory.dmp	upx
behavioral2/files/0x000600000002320c-6.dat	upx
behavioral2/memory/1688-7-0x0000000000210000-0x0000000000227000-memory.dmp	upx
behavioral2/memory/1848-9-0x0000000000AF0000-0x0000000000B07000-memory.dmp	upx
behavioral2/files/0x000400000001e6ff-12.dat	upx
behavioral2/files/0x000600000002320b-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"	4002a100f2d5c79432818ddf0bbc2c5d.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	4002a100f2d5c79432818ddf0bbc2c5d.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1688	4002a100f2d5c79432818ddf0bbc2c5d.exe
Token: SeDebugPrivilege	1848	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1688 wrote to memory of 1848	1688	4002a100f2d5c79432818ddf0bbc2c5d.exe	90
PID 1688 wrote to memory of 1848	1688	4002a100f2d5c79432818ddf0bbc2c5d.exe	90
PID 1688 wrote to memory of 1848	1688	4002a100f2d5c79432818ddf0bbc2c5d.exe	90

C:\Users\Admin\AppData\Local\Temp\4002a100f2d5c79432818ddf0bbc2c5d.exe
"C:\Users\Admin\AppData\Local\Temp\4002a100f2d5c79432818ddf0bbc2c5d.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1688
- 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:1848

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
c84691274cb88d35286631d086fa43d9

SHA1
39c099871ce446b1a8fca92df5c104b74522b5f7

SHA256
e26ba590c887e61df94afb650ec312b6fd462a6ab0e948f85f21461684a86137

SHA512
3494553865d216ce2ec62e2090c48384e980c3dc8d289eaa0213d12f96747837320df7ca369f873bb88cb9a37157a0e3daf76848c423304be18dcfbb0e78acb0

Download Submit
C:\Users\Admin\AppData\Local\Temp\CeDL5xZ7QdcdVlu.exe

Filesize
46KB

MD5
dc35ff240c402ff6b3c0294a0f9d35de

SHA1
0d8f74fe844e6300e9cbe137815245db272dcdd0

SHA256
d1b97ff3da5c23346ab0beb90bb7be753cc6845b20fb4fe4c678d1023dbb2030

SHA512
c89073f0a51fcf26f602d2e822402a26bd2041a5e36a7c839d487521bc82e67f8f2afe803421a9d78b743fbd2127cfca0236a81fcf51ab8e87f6a6345b5d13f0

Download Submit
C:\Windows\CTS.exe

Filesize
29KB

MD5
70aa23c9229741a9b52e5ce388a883ac

SHA1
b42683e21e13de3f71db26635954d992ebe7119e

SHA256
9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

SHA512
be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

Download Submit
memory/1688-0-0x0000000000210000-0x0000000000227000-memory.dmp

Filesize
92KB

Download
memory/1688-7-0x0000000000210000-0x0000000000227000-memory.dmp

Filesize
92KB

Download
memory/1848-9-0x0000000000AF0000-0x0000000000B07000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads