5fee81dfef40377bfabd433073e4f615c06e7371c5a1e70ccc9aa427372932fa

Analysis

max time kernel
153s
max time network
166s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-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
4656	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/2500-0-0x0000000000D70000-0x0000000000D87000-memory.dmp	upx
behavioral2/files/0x0007000000023215-8.dat	upx
behavioral2/memory/4656-9-0x0000000000FA0000-0x0000000000FB7000-memory.dmp	upx
behavioral2/memory/2500-7-0x0000000000D70000-0x0000000000D87000-memory.dmp	upx
behavioral2/files/0x000500000002270a-12.dat	upx
behavioral2/files/0x000600000001e71b-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"	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	2500	b5a96780868cbef8b85cbfc651061f1d.exe
Token: SeDebugPrivilege	4656	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2500 wrote to memory of 4656	2500	b5a96780868cbef8b85cbfc651061f1d.exe	57
PID 2500 wrote to memory of 4656	2500	b5a96780868cbef8b85cbfc651061f1d.exe	57
PID 2500 wrote to memory of 4656	2500	b5a96780868cbef8b85cbfc651061f1d.exe	57

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:2500
- 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:4656

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
6KB

MD5
2e4fbb16c8876d464ebf04495ad3b678

SHA1
ff1d26a8ee2e5131e284c336a48f6b8683ab181a

SHA256
311e71db06d6e82b5e3605984b7263b151f0d882b984d0964a7e415c22deb376

SHA512
f2941d1da01eb75f4323ed491f1dc50d55e3095a2d98e50c9071ad331ec0f0793a27c77a2fdc0f6d195ecaf160129e3232e9751ca8f4bf5bd14ddbe257ad5336

Download Submit
C:\Users\Admin\AppData\Local\Temp\D1O4pP6uUC5LN8C.exe

Filesize
61KB

MD5
581ad15e5ac8b3fb6cc6cc968c6a6ba9

SHA1
34f531dba9de07d28dbc9cf7f081659201638737

SHA256
20b631bc17eec8e1b7cdb216da858cbc80cb71c9cb56ef369236ee7511aea643

SHA512
bfce89f1d26055f83566a1ac4243be969f4da80b9a389730ee8e1d66ead7911a1cd52a953cfa468d48f54ea49d6b1682fc819d97161036965e58bea95f53eb22

Download Submit
C:\Windows\CTS.exe

Filesize
29KB

MD5
70aa23c9229741a9b52e5ce388a883ac

SHA1
b42683e21e13de3f71db26635954d992ebe7119e

SHA256
9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

SHA512
be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

Download Submit
memory/2500-0-0x0000000000D70000-0x0000000000D87000-memory.dmp

Filesize
92KB

Download
memory/2500-7-0x0000000000D70000-0x0000000000D87000-memory.dmp

Filesize
92KB

Download
memory/4656-9-0x0000000000FA0000-0x0000000000FB7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads