c3bbbb934219c7fc8e17f8f6f789d437d73d0c42a7603168d9f0da740554e1eb

Analysis

max time kernel
162s
max time network
172s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
06/01/2024, 16:05

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General

Target

46a412a3a5ab708b5eac42d51688e34a.exe
Size

30KB
MD5

46a412a3a5ab708b5eac42d51688e34a
SHA1

bd1f15955e73f1624ed6b6783c8a6ad230318b8b
SHA256

c3bbbb934219c7fc8e17f8f6f789d437d73d0c42a7603168d9f0da740554e1eb
SHA512

6c1bf004ab64b65992cf335b3d68d9089307ae44d3f4e4345f89268d608beaf80115b24dcebb7e4f4e5b33a6266f7eb586bdf5b520e5e3ef805a2fcf99f4d7cb
SSDEEP

768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEFCI:SKcR4mjD9r823Fz

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4908	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/4776-0-0x0000000000BC0000-0x0000000000BD7000-memory.dmp	upx
behavioral2/memory/4908-9-0x0000000000B60000-0x0000000000B77000-memory.dmp	upx
behavioral2/files/0x0007000000023209-8.dat	upx
behavioral2/memory/4776-7-0x0000000000BC0000-0x0000000000BD7000-memory.dmp	upx
behavioral2/files/0x000300000001e713-12.dat	upx
behavioral2/files/0x00050000000006e9-29.dat	upx
behavioral2/memory/4908-31-0x0000000000B60000-0x0000000000B77000-memory.dmp	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"	46a412a3a5ab708b5eac42d51688e34a.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	46a412a3a5ab708b5eac42d51688e34a.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4776	46a412a3a5ab708b5eac42d51688e34a.exe
Token: SeDebugPrivilege	4908	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4776 wrote to memory of 4908	4776	46a412a3a5ab708b5eac42d51688e34a.exe	89
PID 4776 wrote to memory of 4908	4776	46a412a3a5ab708b5eac42d51688e34a.exe	89
PID 4776 wrote to memory of 4908	4776	46a412a3a5ab708b5eac42d51688e34a.exe	89

C:\Users\Admin\AppData\Local\Temp\46a412a3a5ab708b5eac42d51688e34a.exe
"C:\Users\Admin\AppData\Local\Temp\46a412a3a5ab708b5eac42d51688e34a.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4776
- 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:4908

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
352KB

MD5
41cfa376d8f754552b973224d98c21e9

SHA1
855518aa6c56394750bbf7f4db233f6805621347

SHA256
3b5ff56f994cacb3abad8a9793572d119d1ed9fd8783f210c244b59bb48a61fb

SHA512
ee63d600ab89e04cfed91f668ef06730f862182698afb2d2816d41c90c6b46e7173fe215a03647df37091c6a7d7f59f3b56f010d7fcedd07a635c0c4298ee8a8

Download Submit
C:\Users\Admin\AppData\Local\Temp\E7DV3HdPsH0tkTr.exe

Filesize
30KB

MD5
a75103560872b1d11397c0435a3f9046

SHA1
1e9158d2cdfc0db0f84c1f89fb57938bc690872f

SHA256
66c4a5cc7fd4ddb9e262162ca09cea079025052b76bcbec048e125ae9fb3404d

SHA512
2476b520474311e25e726c2e61e9627c6e220efdcfca7c56ecd8ebf92777eb611d662f79a3a417d8afc807c6add5d867446c8e4685bb32cc250d023dd7db490a

Download Submit
C:\Windows\CTS.exe

Filesize
29KB

MD5
70aa23c9229741a9b52e5ce388a883ac

SHA1
b42683e21e13de3f71db26635954d992ebe7119e

SHA256
9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

SHA512
be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

Download Submit
memory/4776-0-0x0000000000BC0000-0x0000000000BD7000-memory.dmp

Filesize
92KB

Download
memory/4776-7-0x0000000000BC0000-0x0000000000BD7000-memory.dmp

Filesize
92KB

Download
memory/4908-9-0x0000000000B60000-0x0000000000B77000-memory.dmp

Filesize
92KB

Download
memory/4908-31-0x0000000000B60000-0x0000000000B77000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads