c43b93d8d1211736a16c46e657353bea880ba05e305436aff327594ea902631e

Analysis

max time kernel
143s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2024, 00:55

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General

Target

c43b93d8d1211736a16c46e657353bea880ba05e305436aff327594ea902631e.exe
Size

135KB
MD5

d59eb1d2e0e3ff69b9fda29eb1505e80
SHA1

23ef392803e84cec96efde038664eaa279f81bd5
SHA256

c43b93d8d1211736a16c46e657353bea880ba05e305436aff327594ea902631e
SHA512

e9db97a91e857dd802e5d2c8617efa8d33b7025fd39c1e4fafd4be07bd669deed88a611bbe21d15e55cc66544d758491749e15eef4b3fd79521ca3be7733da21
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT56aPNU/lKs006vWufDOmmkJIR8wkga:ZRpAyazIliazT56WNRs006vZxDCGtga

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
4788	IStBB4y7Cf5a82W.exe
1008	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

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"	c43b93d8d1211736a16c46e657353bea880ba05e305436aff327594ea902631e.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	c43b93d8d1211736a16c46e657353bea880ba05e305436aff327594ea902631e.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4256	c43b93d8d1211736a16c46e657353bea880ba05e305436aff327594ea902631e.exe
Token: SeDebugPrivilege	1008	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4256 wrote to memory of 4788	4256	c43b93d8d1211736a16c46e657353bea880ba05e305436aff327594ea902631e.exe	96
PID 4256 wrote to memory of 4788	4256	c43b93d8d1211736a16c46e657353bea880ba05e305436aff327594ea902631e.exe	96
PID 4256 wrote to memory of 4788	4256	c43b93d8d1211736a16c46e657353bea880ba05e305436aff327594ea902631e.exe	96
PID 4256 wrote to memory of 1008	4256	c43b93d8d1211736a16c46e657353bea880ba05e305436aff327594ea902631e.exe	97
PID 4256 wrote to memory of 1008	4256	c43b93d8d1211736a16c46e657353bea880ba05e305436aff327594ea902631e.exe	97
PID 4256 wrote to memory of 1008	4256	c43b93d8d1211736a16c46e657353bea880ba05e305436aff327594ea902631e.exe	97

C:\Users\Admin\AppData\Local\Temp\c43b93d8d1211736a16c46e657353bea880ba05e305436aff327594ea902631e.exe
"C:\Users\Admin\AppData\Local\Temp\c43b93d8d1211736a16c46e657353bea880ba05e305436aff327594ea902631e.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4256
- C:\Users\Admin\AppData\Local\Temp\IStBB4y7Cf5a82W.exe
  C:\Users\Admin\AppData\Local\Temp\IStBB4y7Cf5a82W.exe
  2⤵
  - Executes dropped EXE
  PID:4788
- 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:1008

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4192 --field-trial-handle=2276,i,5697607538120380977,9987005253899555344,262144 --variations-seed-version /prefetch:8
1⤵
PID:2248

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
789KB

MD5
ecb810d3e340f431c65e8852dc6c8f9d

SHA1
60f0c09d1703dd875366982f12dc9697b29594c8

SHA256
cd3eb68f7aaa29d77f61546f63c3ab894974b59b63749e4b4b947df62dda28ae

SHA512
4eba9fbf07eea660e89cd64639d9ac72d9e8d4534ac7baa258da67ec36afcfd7fefea1d05e9782b87053d7699a0b36a488b56ae0304040bf47021ea8a74baad5

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C:\Users\Admin\AppData\Local\Temp\IStBB4y7Cf5a82W.exe

Filesize
64KB

MD5
e97c622b03fb2a2598bf019fbbe29f2c

SHA1
32698bd1d3a0ff6cf441770d1b2b816285068d19

SHA256
5c1af46c7300e87a73dacf6cf41ce397e3f05df6bd9c7e227b4ac59f85769160

SHA512
db70c62fb35a8e5b005f13b57c1ebbf6c465f6ff0524422294c43e27fb4aa79379dc1e300ad11dc2354405c43b192ae06b91c0f525a1f2617e4d14673651a87d

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C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads