92eb249cc1c6a4a1b4fd45903964fdcd7e6e1278b42c98464983a9c762eaa33b

Analysis

max time kernel
125s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
11-10-2023 13:32

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General

Target

3f8da70716aa7b06c4f7721ca6ffee80_JC.exe
Size

88KB
MD5

3f8da70716aa7b06c4f7721ca6ffee80
SHA1

a11ade24382c376ad717223412285df2d2b813cd
SHA256

92eb249cc1c6a4a1b4fd45903964fdcd7e6e1278b42c98464983a9c762eaa33b
SHA512

2db620d26c99cb0a4936214a368f2199b81e0098b29c39e825bf7849a465f5c949372c5f15d40661ae9eefa6671314de648ec026634377f3af7d8e014065b004
SSDEEP

1536:GFcNjQlsWjcd+xzl7SM+Gn8255NeoqbiO9qZ6:GQjr87S7Gnz55Eo3O9L

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1868	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 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2960-0-0x0000000000290000-0x00000000002A9000-memory.dmp	upx
behavioral2/memory/2960-9-0x0000000000290000-0x00000000002A9000-memory.dmp	upx
behavioral2/files/0x000700000002324b-7.dat	upx
behavioral2/memory/1868-8-0x0000000000160000-0x0000000000179000-memory.dmp	upx
behavioral2/files/0x000700000002324b-6.dat	upx
behavioral2/files/0x0009000000023166-12.dat	upx
behavioral2/files/0x0008000000023243-30.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"	3f8da70716aa7b06c4f7721ca6ffee80_JC.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	3f8da70716aa7b06c4f7721ca6ffee80_JC.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2960	3f8da70716aa7b06c4f7721ca6ffee80_JC.exe
Token: SeDebugPrivilege	1868	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2960 wrote to memory of 1868	2960	3f8da70716aa7b06c4f7721ca6ffee80_JC.exe	66
PID 2960 wrote to memory of 1868	2960	3f8da70716aa7b06c4f7721ca6ffee80_JC.exe	66
PID 2960 wrote to memory of 1868	2960	3f8da70716aa7b06c4f7721ca6ffee80_JC.exe	66

C:\Users\Admin\AppData\Local\Temp\3f8da70716aa7b06c4f7721ca6ffee80_JC.exe
"C:\Users\Admin\AppData\Local\Temp\3f8da70716aa7b06c4f7721ca6ffee80_JC.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2960
- 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:1868

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
406KB

MD5
509ec699cd64732b072abebdbe7c82cd

SHA1
8b7a66787a4a605d317a6820e9f0c6628ba5c331

SHA256
40b8ceb46a5057243071e70b992a6af99b0d3bf2f6f54959c26a220d2065aad5

SHA512
bb924c6d44bc648ca6df7cc9ffe2908ddc716e1e00f9819477bebf2d0a7f656a5413e0c2e9417622793b035891aeaebcb252a8a4f5707f29182248a6953a55c9

Download Submit
C:\Users\Admin\AppData\Local\Temp\pIEYnvmb091GvRx.exe

Filesize
88KB

MD5
f909ba7c016c669e76623700d7e5eaa5

SHA1
da84487f0d13ed7a291b8e8d50b8ddaff81f0621

SHA256
3874d407aa13a06fed3b51e70cf2dfed82c8e4a74eafd905796c37b899c592d3

SHA512
52a4f1e8dd521979db52aa0b5f5d968e5e6715678c0d1f08319cee9c68680a4455d50ddd389cab762f14392121032c195248c2ab968d80cb263fcc33649af33d

Download Submit
C:\Windows\CTS.exe

Filesize
82KB

MD5
cd39642d7d003745232e502aec819883

SHA1
f5e58701c508520e03168fec73eb5845f75ae4ac

SHA256
23daf89105d8fe57d7aea82c8d6fb9ba2454e95aabcc2ba7bdef02351c56e157

SHA512
a8c056482c221f246aa839816bd91fb38f2ea7d639ed2929935b51da6f2747c31d0f2aed084e50ddbae8dbf74b967eaad7c3c16670e74ccd9c433f69de558c90

Download Submit
C:\Windows\CTS.exe

Filesize
82KB

MD5
cd39642d7d003745232e502aec819883

SHA1
f5e58701c508520e03168fec73eb5845f75ae4ac

SHA256
23daf89105d8fe57d7aea82c8d6fb9ba2454e95aabcc2ba7bdef02351c56e157

SHA512
a8c056482c221f246aa839816bd91fb38f2ea7d639ed2929935b51da6f2747c31d0f2aed084e50ddbae8dbf74b967eaad7c3c16670e74ccd9c433f69de558c90

Download Submit
memory/1868-8-0x0000000000160000-0x0000000000179000-memory.dmp

Filesize
100KB

Download
memory/2960-0-0x0000000000290000-0x00000000002A9000-memory.dmp

Filesize
100KB

Download
memory/2960-9-0x0000000000290000-0x00000000002A9000-memory.dmp

Filesize
100KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads