b665685bb30cd45dcea7d79486df6c0966361f56afe313920dd7ea1bbf4756a1

Analysis

max time kernel
163s
max time network
121s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
30/12/2023, 01:04

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General

Target

097661bf06ba8e3dddec7474a61ed839.exe
Size

38KB
MD5

097661bf06ba8e3dddec7474a61ed839
SHA1

3181693e70a100eaf7235957b24dbe0405fe8e7e
SHA256

b665685bb30cd45dcea7d79486df6c0966361f56afe313920dd7ea1bbf4756a1
SHA512

df2af5bc1f44626c5aede69f88617d64c92b9229d40eea1c53441033dd5ea4153f69885b11ee24efec63df1ff740f21df96c11134d8a72983b444d053a1a81c8
SSDEEP

768:X8Q2ZDX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIom46+IA+oI:s9Z3KcR4mjD9r8226+QoI

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1860	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/2412-0-0x0000000000AD0000-0x0000000000AE7000-memory.dmp	upx
behavioral1/files/0x0008000000016d46-6.dat	upx
behavioral1/memory/2412-9-0x0000000000AD0000-0x0000000000AE7000-memory.dmp	upx
behavioral1/memory/1860-11-0x0000000000AF0000-0x0000000000B07000-memory.dmp	upx
behavioral1/files/0x0009000000012270-12.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"	097661bf06ba8e3dddec7474a61ed839.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	097661bf06ba8e3dddec7474a61ed839.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2412	097661bf06ba8e3dddec7474a61ed839.exe
Token: SeDebugPrivilege	1860	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2412 wrote to memory of 1860	2412	097661bf06ba8e3dddec7474a61ed839.exe	27
PID 2412 wrote to memory of 1860	2412	097661bf06ba8e3dddec7474a61ed839.exe	27
PID 2412 wrote to memory of 1860	2412	097661bf06ba8e3dddec7474a61ed839.exe	27
PID 2412 wrote to memory of 1860	2412	097661bf06ba8e3dddec7474a61ed839.exe	27

C:\Users\Admin\AppData\Local\Temp\097661bf06ba8e3dddec7474a61ed839.exe
"C:\Users\Admin\AppData\Local\Temp\097661bf06ba8e3dddec7474a61ed839.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2412
- 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:1860

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\1dIEeZEVAgFEOBu.exe

Filesize
38KB

MD5
c02e4a52991d3e90d92511b205218cbe

SHA1
d4974b733b69dc0de10ae3960c87451e34e80b06

SHA256
b2fa0fcb5ceb13ffc02788466801701020a6d88f0a9ab12ad9283dce75032d32

SHA512
4dbabe7721aabc2c7a16f0fd249089a7ed8969cfdfd4c5b35af4269eb5a2c1730141a106f97d60ec2a87852908f530e5ac27627e4171001070355f8ba1024e65

Download Submit
C:\Windows\CTS.exe

Filesize
35KB

MD5
93e5f18caebd8d4a2c893e40e5f38232

SHA1
fd55c4e6bcd108bce60ea719c06dc9c4d0adafa6

SHA256
a66c4b98becac2f69cb107cd087d7a2ca9ef511bc3b83367b1f440f11dd159a8

SHA512
986583610d27caae2080834301d072557c5d2c85e33f0d19ab1245d7eae8db146397461572ddb3d491be16f3af210720d54267dac838fdad8fe34afa3d6b7f54

Download Submit
memory/1860-11-0x0000000000AF0000-0x0000000000B07000-memory.dmp

Filesize
92KB

Download
memory/2412-0-0x0000000000AD0000-0x0000000000AE7000-memory.dmp

Filesize
92KB

Download
memory/2412-9-0x0000000000AD0000-0x0000000000AE7000-memory.dmp

Filesize
92KB

Download
memory/2412-16-0x0000000000070000-0x0000000000087000-memory.dmp

Filesize
92KB

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads