5fee81dfef40377bfabd433073e4f615c06e7371c5a1e70ccc9aa427372932fa

Analysis

max time kernel
140s
max time network
119s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
22/12/2023, 14:04

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General

Target

b5a96780868cbef8b85cbfc651061f1d.exe
Size

61KB
MD5

b5a96780868cbef8b85cbfc651061f1d
SHA1

46c1e864ed1499327ea197af4ea7a9999298541d
SHA256

5fee81dfef40377bfabd433073e4f615c06e7371c5a1e70ccc9aa427372932fa
SHA512

0ec4771086162dfc8708b2ff28182414b6a6404289687c675cecbedd9d2c4d6a095f5da44a96d330ed60c4a7d166d7c509d4a3c89bf0ac92c64d7dc01f79da1d
SSDEEP

768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEFt8JaCLtvpDpvL7Rt/hG:SKcR4mjD9r823FuFL7Dl7RtN/QyNq/Bb

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1748	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/2192-0-0x00000000000E0000-0x00000000000F7000-memory.dmp	upx
behavioral1/memory/2192-8-0x00000000000E0000-0x00000000000F7000-memory.dmp	upx
behavioral1/files/0x0009000000015d23-7.dat	upx
behavioral1/memory/1748-11-0x0000000000DD0000-0x0000000000DE7000-memory.dmp	upx
behavioral1/files/0x000b000000015cfa-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"	b5a96780868cbef8b85cbfc651061f1d.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	b5a96780868cbef8b85cbfc651061f1d.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2192	b5a96780868cbef8b85cbfc651061f1d.exe
Token: SeDebugPrivilege	1748	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2192 wrote to memory of 1748	2192	b5a96780868cbef8b85cbfc651061f1d.exe	28
PID 2192 wrote to memory of 1748	2192	b5a96780868cbef8b85cbfc651061f1d.exe	28
PID 2192 wrote to memory of 1748	2192	b5a96780868cbef8b85cbfc651061f1d.exe	28
PID 2192 wrote to memory of 1748	2192	b5a96780868cbef8b85cbfc651061f1d.exe	28

C:\Users\Admin\AppData\Local\Temp\b5a96780868cbef8b85cbfc651061f1d.exe
"C:\Users\Admin\AppData\Local\Temp\b5a96780868cbef8b85cbfc651061f1d.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2192
- 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:1748

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\f03hfuUYcZZfMS2.exe

Filesize
61KB

MD5
072a64105dc0b05c932963db1ed7875e

SHA1
969cd61952e6d1315650beb63ad9dec5a419e5be

SHA256
44d46cffcba23e25651e7ff4ec0b3c4e7c72e7c8aa7cae3e5f5632cd6ae54d2a

SHA512
7ca89ed07b2d1fc66eaf08ce3de80405e80cc2eedcd9eb07fd9693409609eea4339f3d9cc2a021eb989ef0960d815c93fecf01cb030019a48b99d699e9e78c77

Download Submit
C:\Windows\CTS.exe

Filesize
29KB

MD5
70aa23c9229741a9b52e5ce388a883ac

SHA1
b42683e21e13de3f71db26635954d992ebe7119e

SHA256
9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

SHA512
be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

Download Submit
memory/1748-11-0x0000000000DD0000-0x0000000000DE7000-memory.dmp

Filesize
92KB

Download
memory/2192-0-0x00000000000E0000-0x00000000000F7000-memory.dmp

Filesize
92KB

Download
memory/2192-8-0x00000000000E0000-0x00000000000F7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads