645d3303de9dd7389ae29d0581cdabfa8dd09ef593c234471bb85ea58f28ba35

Analysis

max time kernel
140s
max time network
123s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
26/12/2023, 01:53

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General

Target

4ab4dc72b166871fe940cefb4ef2c8d6.exe
Size

30KB
MD5

4ab4dc72b166871fe940cefb4ef2c8d6
SHA1

04a591ad29cdf25c57e42402ebaf75670c10a800
SHA256

645d3303de9dd7389ae29d0581cdabfa8dd09ef593c234471bb85ea58f28ba35
SHA512

53ceea4f553557fb0da27b27090f7076ad15af43243892cbaf362a34efbc840d753da4a29bac3fd587835a108508e6899a597f36b35fa200cdd5f3e4925aa233
SSDEEP

768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEFQI:SKcR4mjD9r823FX

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1996	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
behavioral1/memory/2940-1-0x00000000001A0000-0x00000000001B7000-memory.dmp	upx
behavioral1/memory/2940-9-0x00000000001A0000-0x00000000001B7000-memory.dmp	upx
behavioral1/files/0x000a000000012704-10.dat	upx
behavioral1/memory/1996-12-0x00000000008C0000-0x00000000008D7000-memory.dmp	upx
behavioral1/files/0x000a0000000126af-14.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"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	4ab4dc72b166871fe940cefb4ef2c8d6.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	4ab4dc72b166871fe940cefb4ef2c8d6.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2940	4ab4dc72b166871fe940cefb4ef2c8d6.exe
Token: SeDebugPrivilege	1996	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2940 wrote to memory of 1996	2940	4ab4dc72b166871fe940cefb4ef2c8d6.exe	28
PID 2940 wrote to memory of 1996	2940	4ab4dc72b166871fe940cefb4ef2c8d6.exe	28
PID 2940 wrote to memory of 1996	2940	4ab4dc72b166871fe940cefb4ef2c8d6.exe	28
PID 2940 wrote to memory of 1996	2940	4ab4dc72b166871fe940cefb4ef2c8d6.exe	28

C:\Users\Admin\AppData\Local\Temp\4ab4dc72b166871fe940cefb4ef2c8d6.exe
"C:\Users\Admin\AppData\Local\Temp\4ab4dc72b166871fe940cefb4ef2c8d6.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2940
- 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:1996

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\5o7AblvIFdN3g0T.exe

Filesize
30KB

MD5
b442fe87007b577f36ce84aeee0f0161

SHA1
546c7fbcf86c57c9fa77bd048462f77fc413f210

SHA256
303af35a1274f22b35d04c5a624eea8a3798b6c4f1412510548ace17eede3321

SHA512
17e87cd7b8266d9d7e881c7db35e3190ca413b49bfc7eec02774fffe8d31619059bea91e38629670e973cb15d1db2ec661795ccbd515ab5c21cbe2499a47ca7a

Download Submit
C:\Windows\CTS.exe

Filesize
29KB

MD5
70aa23c9229741a9b52e5ce388a883ac

SHA1
b42683e21e13de3f71db26635954d992ebe7119e

SHA256
9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

SHA512
be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

Download Submit
memory/1996-12-0x00000000008C0000-0x00000000008D7000-memory.dmp

Filesize
92KB

Download
memory/2940-1-0x00000000001A0000-0x00000000001B7000-memory.dmp

Filesize
92KB

Download
memory/2940-9-0x00000000001A0000-0x00000000001B7000-memory.dmp

Filesize
92KB

Download
memory/2940-11-0x00000000000E0000-0x00000000000F7000-memory.dmp

Filesize
92KB

Download
memory/2940-18-0x00000000000E0000-0x00000000000F7000-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